Journal articles: 'Rolling oil'

1

DRAHL, CARMEN. "ROLLING OUT THE OIL." Chemical & Engineering News 85, no. 50 (December 10, 2007): 7. http://dx.doi.org/10.1021/cen-v085n050.p007.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

TANIKAWA, Keiichi. "Surface chemistry of cold rolling oil." Hyomen Kagaku 10, no. 7 (1989): 448–55. http://dx.doi.org/10.1380/jsssj.10.448.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Latifi, Seyedmorteza. "Effect of Shear Strength of Oil on Lubrication of Cold Strip Rolling in Full-Fil Regime." Logic : Jurnal Rancang Bangun dan Teknologi 20, no. 3 (November 30, 2020): 135–40. http://dx.doi.org/10.31940/logic.v20i3.1811.

Full text

Abstract:

Cold strip rolling is a major deformation process in industry. The need for high quality products and increased production speed, makes the application of the lubricant important. In the present study, oil property effect is investigated in cold rolling using oil lubricant in full-film lubrication regime. The model predicts decisive role of oil property in rolling parameters.

APA, Harvard, Vancouver, ISO, and other styles

4

Peng, Liang Gui, Xian Lei Hu, Xu Li, Dian Hua Zhang, Gui Ling Yang, and Zhong Liang Wu. "Development and Application of Hot Rolling Lubrication Control System Based on Expert System." Advanced Materials Research 442 (January 2012): 366–69. http://dx.doi.org/10.4028/www.scientific.net/amr.442.366.

Full text

Abstract:

To integrate a new roll gap lubrication system into an existing hot strip mill is a challenge problem. A lubrication expert system was developed and embedded into finish rolling setup system. The reference value setup by expert system is downloaded to roll bite lubrication PLC via finish mill PLC to open oil spraying valve and regulate the oil concentration. Oil spraying time sequence is an important factor to make good lubrication effect and to keep the rolling process stable. Since online application of the hot rolling lubrication system, rolling force and work roll wear has been reduced dramatically, especially rolling thin strip.

APA, Harvard, Vancouver, ISO, and other styles

5

OKAMOTO, Takahiko. "Simulation of Rolling Slip and Rolling Oil Conditions in Cold Rolling of High-Strength Steel." Journal of the Japan Society for Technology of Plasticity 61, no. 710 (2020): 81–85. http://dx.doi.org/10.9773/sosei.61.81.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Qian, Cheng, Zhenhua Bai, Jiasheng Zhang, Yaya Cui, and Changchun Hua. "Formation Mechanism and Influence Factors of Roll Surface Oil Film Thickness in the Double Cold Reduction Mill." Mathematical Problems in Engineering 2020 (May 21, 2020): 1–10. http://dx.doi.org/10.1155/2020/6746828.

Full text

Abstract:

In the double cold rolling process, the emulsion entering the roll gap during the double cold rolling process has the characteristics of high concentration and small flow rate so that the roll surface oil film thickness will affect roll gap oil film thickness, which in turn affects the rolling friction coefficient. This paper analyzes the formation mechanism and evolution process of the roll surface oil film thickness by considering the equipment and process characteristics of the emulsion direct injection application lubrication system. Then, based on the principle of fluid dynamics, the roll surface oil film thickness model in the double cold rolling process is established, and the prediction of the roll surface oil film thickness during the double cold rolling process is realized. Subsequently, the effects of five factors, such as rolling speed, work roll roughness, maximum contact stress between rolls, emulsion initial dynamic viscosity, and emulsion pressure viscosity coefficient, on the roll surface oil film thickness are quantitatively analyzed, and the corresponding influence laws are given. Finally, the relevant model and software that are applied to the 1220 double cold reduction mill have achieved good results.

APA, Harvard, Vancouver, ISO, and other styles

7

Wu, C. W., G. J. Ma, and H. S. Sun. "Viscoplastic Lubrication Analysis in a Metal-Rolling Inlet Zone Using Parametric Quadratic Programming." Journal of Tribology 127, no. 3 (March 16, 2005): 605–10. http://dx.doi.org/10.1115/1.1924576.

Full text

Abstract:

A mathematical programming solution based on finite element method is used to analyze wall slip of viscoplastic lubrication in a metal-rolling inlet zone. Slip velocity can be directly obtained by parametric quadratic programming without an iterative process between the oil film pressure and the slip velocity. It is found that wall slip causes the oil film thickness to decrease dramatically. The initial limiting shear strength and proportional constant of the viscoplastic lubricant have a larger effect on the oil film pressure than the rolling speed. The nonsensitivity of oil film thickness to the rolling speed is a great particular advantage to metal-rolling processing.

APA, Harvard, Vancouver, ISO, and other styles

8

Wang, S. H., A. Z. Szeri, and K. R. Rajagopal. "Lubrication With Emulsion in Cold Rolling." Journal of Tribology 115, no. 3 (July 1, 1993): 523–31. http://dx.doi.org/10.1115/1.2921669.

Full text

Abstract:

Petroleum oil-in-water emulsion, where water is the continuous phase, is often employed under circumstances where the high heat capacity of water is beneficial while the poor lubricating properties of an oil-in-water emulsion can be tolerated. Usage includes cold-rolling but also some hot rolling applications. However, emulsions do not exhibit Newtonian behavior even when their individual components themselves are Newtonian, thus classical lubrication theory is not valid for these applications. In this paper we employ the extended Reynolds equations of Al-Sharif et al., derived for binary mixture lubricants, to study strip-rolling lubricated with oil-in-water emulsion. We are able to predict several experimentally observed phenomena such as oil-pooling, enhancement of oil-pooling with increased strip yield stress and with increased roller speed.

APA, Harvard, Vancouver, ISO, and other styles

9

Huang, Fuchuan, Fukang Deng, Kang-Chun Li, and Ke Qin. "Development of special lubricant for the copper belt cold rolling." Industrial Lubrication and Tribology 68, no. 5 (August 8, 2016): 586–90. http://dx.doi.org/10.1108/ilt-09-2015-0126.

Full text

Abstract:

Purpose Aiming at the high temperature, high speed, high precision and high surface quality of the copper belt cold rolling, the purpose of this paper is to develop a new type of lubricant for cold rolled copper belt. Design/methodology/approach The component of the developed oil was determined based on the physical and chemical properties of the base oil and the tribological properties, the oxidation resistance properties, the rust resistance properties, the anti-foam properties, the demulsibility and the other properties of the additives. The orthogonal experiment method was used to determine the optimum adding amount of the additives; finally, the developed oil formulation was determined. Findings The physical and chemical experiment results show that the developed oil has a good performance of oil film bearing capacity and oxidation resistance. The simulation of rolling experiment found that the developed oil can significantly reduce rolling pressure and effectively reduce the friction in the process of rolling. Originality/value The experimental results show that the developed oil has excellent performance and can meet the requirement of lubrication in the process of cold rolling copper belt.

APA, Harvard, Vancouver, ISO, and other styles

10

Yan, Pengfei, Changfeng Yan, Kai Wang, Fengtao Wang, and Lixiao Wu. "5-DOF Dynamic Modeling of Rolling Bearing with Local Defect considering Comprehensive Stiffness under Isothermal Elastohydrodynamic Lubrication." Shock and Vibration 2020 (June 22, 2020): 1–15. http://dx.doi.org/10.1155/2020/9310278.

Full text

Abstract:

The sliding of the rolling element in the load zone would cause the bearing’s wear and failure at high speed under elastohydrodynamic lubrication (EHL) condition. Aiming at this phenomenon, considering lubrication oil film, time-varying displacement, radial clearance, and comprehensive stiffness, a five degree-of-freedom (DOF) dynamic model of rolling bearing with local defect is proposed based on isothermal EHL and which is validated by experimental data. The variation of oil film stiffness, comprehensive stiffness, and vibration characteristics of rolling bearing is studied under different speeds and loads. The results show that the lubricating oils with different viscosities have a certain influence on the bearing oil film thickness and comprehensive stiffness. As the load increases, the oil film stiffness and comprehensive stiffness would increase, and the oil film thickness would decrease. And as the tangential speed increases, the oil film stiffness would increase, and the oil film thickness and comprehensive stiffness would decrease. The vibration amplitude of the rolling bearing is enhanced with the increase of the rotation speed and the radial load. This model is helpful for the optimization, the correct use of lubricants, and life prediction of rolling bearing.

APA, Harvard, Vancouver, ISO, and other styles

11

Bian, Xinxiao, and Quan Wang. "A comprehensive mathematical model for an accurate calculation of the oil film thickness of strip cold rolling." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 3 (July 11, 2019): 350–61. http://dx.doi.org/10.1177/1350650119862930.

Full text

Abstract:

The surface quality of cold rolled strip is related to a greater extent on the rolling oil film thickness, and there are many factors that affect the oil film thickness. Considering the various factors comprehensively, an integrated mathematical model is established, such as roughness of rolls and strips, elastohydrodynamic lubrication, friction heat and plastic deformation heat in the rolling zone, viscosity varying with temperature and pressure, etc. A series of equations are developed, such as the Reynolds equation of partial membrane hydrodynamic lubrication based on average flow theory, equation of oil film thickness on rough elastic surface, the thermal interface equations between strip, oil film and roller surface, surface asperity contact pressure equation, lubricant viscosity and density equations, motion equation of the oil film, etc. This model is solved by finite difference method to get the film pressure, oil film thickness, and temperature distribution in the rolling zone. The average rolling pressure, the roll, and strip temperature calculated by the model are very close to the field test results. Comparing the minimum film thickness calculated by the model with the regression formula of other literature test, the error is less than 10%. The minimum oil film thickness is analyzed. It increases with the decrease of the rolling force and is approximately proportional to the rolling speed and lubricant viscosity.

APA, Harvard, Vancouver, ISO, and other styles

12

Wang, Yue Zhan, Qi Bo Yan, Jin Jing Huang, Bing Li, and Jin Lin Gao. "Recovery of Lubricating Oil for Cold Strip Rolling." Applied Mechanics and Materials 189 (July 2012): 44–47. http://dx.doi.org/10.4028/www.scientific.net/amm.189.44.

Full text

Abstract:

A lot of lubricating oil is consumed in the process of the cold rolling of stainless steel. The oil recovery is very important due to some reasons, such as the cost of production and environmental pollution. A set of lubricating oil recovery system is designed and constructed, which is equipped with a set of expanded size recovery oil pan for recycling splashed oil, a high efficiency two-level mist recovery system for recycling the oil mist, and an oil collection platform for recycling the oil rolled. The system is effectively to recovery more of lubricating oil through actual use and measurement.

APA, Harvard, Vancouver, ISO, and other styles

13

Inagaki, Satoshi, Tatsuaki Ishii, Qi Hu, Xiao Ping Ren, and Masachika Wakimoto. "Development of Rolling Oil with Cationic Emulsifier for Sheet Gauge Cold Rolling." Tetsu-to-Hagane 103, no. 3 (2017): 134–41. http://dx.doi.org/10.2355/tetsutohagane.tetsu-2016-055.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

IWADOH, Shuichi, Yoshiyuki MORITA, Fumio GAKUHARI, and Muneyasu TOKUNAGA. "Development of Synthetic Ester Based Rolling Oil for Tin Gauge Cold Rolling." Tetsu-to-Hagane 82, no. 3 (1996): 220–25. http://dx.doi.org/10.2355/tetsutohagane1955.82.3_220.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Wu, Hao, Sang Xiong, Wei Lin, and Fanxin Kong. "Study on tribological behavior, lubrication and anti-corrosion properties of W/O microemulsion for cold rolling of copper strip." Industrial Lubrication and Tribology 73, no. 4 (February 17, 2021): 554–62. http://dx.doi.org/10.1108/ilt-06-2020-0227.

Full text

Abstract:

Purpose The purpose of this paper is to improve lubrication and anti-corrosion properties of the water-in-oil (W/O) microemulsion for rolling of copper strip and sheet to replace the traditional rolling oil. Design/methodology/approach The W/O microemulsion is prepared by using hydrogenated base oil, a deionized aqueous solution of 0.03 mol/L of Na2SO4 and composite emulsifier such as Sp20, Tx-7 or sodium petroleum sulfonate. Tribological behavior of the microemulsions and traditional cold rolling oil was conducted by MR-10A four-ball tester. The lubrication performance of microemulsion for cold rolling of copper strip was performed by cold-rolling experiment. The morphology of worn surface and the rolled copper was characterized. Anti-corrosion properties of microemulsion for rolled copper was investigated, and the corroded surface was analyzed by X-ray photoelectron spectrometer (XPS). Findings The results show that the extreme pressure and antiwear properties of the microemulsions have been improved; the average friction coefficient of the improved microemulsion is 0.065, which is 30% lower than the commercial cold rolling oil. For cold rolling of copper strip, the microemulsion has a higher thinning effect than the commercial cold rolling oil, and a smooth surface is obtained and the surface roughness (Sa) is decreased by 6.8%. The XPS analysis indicated microemulsion adsorbed on the copper surface mitigate the corrosion of oils. Originality/value This paper used the prepared W/O microemulsion as a new lubricant in the process of rolling for copper strip and sheet in industry, demonstrating the microemulsion has broad application prospects in the future. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-06-2020-0227/

APA, Harvard, Vancouver, ISO, and other styles

16

Huang, C. B. "Determination of Dialkyldimethylammonium Salt in Rolling Oil." Journal of Liquid Chromatography 10, no. 6 (May 1987): 1103–25. http://dx.doi.org/10.1080/01483918708066757.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Ivankina, E. B., L. A. Shklovskaya, O. O. Shchekurin, E. E. Obmochaeva, V. M. Mitrofanov, and P. E. Rakhlin. "Universal oil for rolling-mill reduction gears." Metallurgist 33, no. 10 (October 1989): 203. http://dx.doi.org/10.1007/bf00748243.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Zhang, Xu, Shi Ting Wang, Jian Lin Sun, and Guo Hong Ding. "Research on Lubricating Properties of Alcohol and Ester in Stainless Steel Cold Rolling Process." Advanced Materials Research 557-559 (July 2012): 1427–31. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1427.

Full text

Abstract:

aliphatic ester, aliphatic alcohol, stainless steel, cold rolling oil Abstract: In this paper, the deeply hydrogenated mineral oil 60N was used as base oil. The additives such as mixture of dodecanol and tetradecyl alcohol, hexadecanol alcohol, octadecyl alcohol, ethyl hydride laurate, methyl palmitate and butyl stearate were separately added to the base oil by 10 percent. Evaluate its physical and chemical properties, and cold rolling experiments were carried out on both 202 and 304 stainless steel lubricated by different rolling oil. The results showed that the aliphatic alcohol have better performance in lubricating and volatilizing properties than fatty acid ester. Moreover, the octadecyl alcohol showed the best lubricating properties compared with selected aliphatic alcohol.

APA, Harvard, Vancouver, ISO, and other styles

19

Nakanishi, Hironobu, Kozo Saiki, Tomoko Hirayama, and Takashi Matsuoka. "Variation of Oil Introduction Behaviour during Oil-in-Water Emulsion Rolling." MATERIALS TRANSACTIONS 54, no. 8 (2013): 1408–15. http://dx.doi.org/10.2320/matertrans.p-m2013807.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Dong, Chang, Jianlin Sun, Zixuan Cheng, and Yuqing Hou. "Preparation and tribological properties of a microemulsion for magnesium alloy warm rolling." Industrial Lubrication and Tribology 71, no. 1 (January 14, 2019): 74–82. http://dx.doi.org/10.1108/ilt-06-2018-0222.

Full text

Abstract:

Purpose The purpose of this paper is to synthesize a microemulsion and investigate its tribological properties as lubricant. Magnesium alloy warm rolling experiments were conducted. Surface morphology was observed and wear form was summarized. The composition of surface residues was analyzed, which sheds light on the lubrication mechanism of microemulsion. Design/methodology/approach A microemulsion was prepared with a proper amount of oil, surfactant, cosurfactant, water and other additives for magnesium alloy strip warm rolling. Tribological properties, such as maximum non-seizure load (PB), friction coefficient (μ) and wear scar diameter (D) of the microemulsion were measured and compared with those of emulsion and rolling oil on an MR-10A four-ball tribotester. The extreme pressure anti-wear coefficients (O) were calculated and compared. Warm rolling experiments were carried out on a Ф 170/400 × 300 mm four-high rolling mill at 240°C to compare the finish rolling thickness and surface quality of rolled AZ31B magnesium alloy strip under four lubrication states, namely, no lubrication, rolling oil, microemulsion and emulsion. The surface morphology after warm rolling was observed with confocal laser scanning microscope and scanning electron microscope, respectively. The composition of surface residues was analyzed with energy dispersive spectrometry and X-Ray photoelectron spectroscopy. Findings Surface morphology indicated that pitting wear, adhesive wear and ploughing wear were three main forms of wear in magnesium alloy warm rolling. Microemulsion had excellent lubrication properties with less residual oil remaining. Two types of adsorption layers formed on magnesium alloy strip surface were responsible for lubrication properties. MgSO4 and magnesium stearate in the reaction layer played a key role in anti-wear and friction-reduction in warm rolling. Originality/value The study is original and gives valuable information on lubrication mechanism of microemulsion in warm rolling of magnesium alloy strips.

APA, Harvard, Vancouver, ISO, and other styles

21

Murtaza, Mobeen, Sulaiman A. Alarifi, Muhammad Shahzad Kamal, Sagheer A. Onaizi, Mohammed Al-Ajmi, and Mohamed Mahmoud. "Experimental Investigation of the Rheological Behavior of an Oil-Based Drilling Fluid with Rheology Modifier and Oil Wetter Additives." Molecules 26, no. 16 (August 12, 2021): 4877. http://dx.doi.org/10.3390/molecules26164877.

Full text

Abstract:

Drilling issues such as shale hydration, high-temperature tolerance, torque and drag are often resolved by applying an appropriate drilling fluid formulation. Oil-based drilling fluid (OBDF) formulations are usually composed of emulsifiers, lime, brine, viscosifier, fluid loss controller and weighting agent. These additives sometimes outperform in extended exposure to high pressure high temperature (HPHT) conditions encountered in deep wells, resulting in weighting material segregation, high fluid loss, poor rheology and poor emulsion stability. In this study, two additives, oil wetter and rheology modifier were incorporated into the OBDF and their performance was investigated by conducting rheology, fluid loss, zeta potential and emulsion stability tests before and after hot rolling at 16 h and 32 h. Extending the hot rolling period beyond what is commonly used in this type of experiment is necessary to ensure the fluid’s stability. It was found that HPHT hot rolling affected the properties of drilling fluids by decreasing the rheology parameters and emulsion stability with the increase in the hot rolling time to 32 h. Also, the fluid loss additive’s performance degraded as rolling temperature and time increased. Adding oil wetter and rheology modifier additives resulted in a slight loss of rheological profile after 32 h and maintained flat rheology profile. The emulsion stability was slightly decreased and stayed close to the recommended value (400 V). The fluid loss was controlled by optimizing the concentration of fluid loss additive and oil wetter. The presence of oil wetter improved the carrying capacity of drilling fluids and prevented the barite sag problem. The zeta potential test confirmed that the oil wetter converted the surface of barite from water to oil and improved its dispersion in the oil.

APA, Harvard, Vancouver, ISO, and other styles

22

Wang, Jian Mei, Qing Xue Huang, Tao Lei, Jian Feng Kang, and Yang Fan. "Optimal Design of the Relative Clearance of Mill Oil-Film Bearing." Advanced Materials Research 156-157 (October 2010): 257–61. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.257.

Full text

Abstract:

Under the given lubricating oil, rolling speed and rolling pressure, the finite element analysis software ANSYS Workbench and CFX were used to analyze the lubricating oil film and bearing by two-way fluid-to-solid coupling method, and the deformation and force of oil film and bushing with different relative clearances were calculated, as well as those with consideration of oil film temperature. Moreover, the fatigue limit theory was used to obtain the best relative clearance, which can provide theoretical data to the bearing structure optimization.

APA, Harvard, Vancouver, ISO, and other styles

23

Matsubara, Yukihiro, and Yukio Kimura. "Consideration of Oil Behavior in Hot Rolling Lubrication." Tetsu-to-Hagane 103, no. 9 (2017): 534–38. http://dx.doi.org/10.2355/tetsutohagane.tetsu-2017-017.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Zhou, Jiawei, Zhicheng Zhao, Yuan Xue, Wei Chang, Ping Liu, Sheng Han, and Hualin Lin. "Regeneration of used rolling oil for sustainable use." Petroleum Science and Technology 35, no. 16 (August 18, 2017): 1642–47. http://dx.doi.org/10.1080/10916466.2017.1349149.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Li, X. M., F. Guo, and P. L. Wong. "Movement of Entrapped Oil Under Pure Rolling Conditions." Tribology Letters 43, no. 2 (June 18, 2011): 129–37. http://dx.doi.org/10.1007/s11249-011-9811-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Zhou, Ya-jun, and Hong-hui Zhou. "Dynamic wetting of rolling oil on aluminum surfaces." Journal of Central South University of Technology 14, no. 2 (April 2007): 255–59. http://dx.doi.org/10.1007/s11771-007-0051-y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Morales-Espejel, Guillermo E., Hans H. Wallin, Rudolf Hauleitner, and Magnus Arvidsson. "Progress in rolling bearing technology for refrigerant compressors." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 16 (August 21, 2017): 2948–61. http://dx.doi.org/10.1177/0954406217725772.

Full text

Abstract:

The paper describes the latest technological solutions in rolling bearings (ball and roller) used in refrigerant compressors. First, the numerous tribological challenges faced by rolling contacts in a lubricant environment made of oil and refrigerant mixture are discussed. It is followed by a description of the even tougher conditions derived by the replacement of the more chemically stable pre-Montreal and pre-Kyoto Protocol refrigerants by the new generation of more environmental friendly refrigerants. In these conditions, rolling bearings are expected to suffer from surface distress and sometimes corrosion fatigue. Thus, attempts to model these conditions by using advanced tribological models are described. Finally, descriptions of different solutions in rolling bearings in refrigerant compressors facing challenges in lubrication and bearing life are described, all the way from traditional oil–refrigerant mixture lubrication up to the latest innovation related to oil-free lubrication, namely the pure refrigerant lubrication.

APA, Harvard, Vancouver, ISO, and other styles

28

Hwu, Yhu Jen, Jian Ting Lee, and Yeau Ren Jeng. "Development of Mixed Lubrication Cold Rolling Model." Key Engineering Materials 642 (April 2015): 190–95. http://dx.doi.org/10.4028/www.scientific.net/kem.642.190.

Full text

Abstract:

Within past 20 years, high surface qualities of cold strip were demanded by automotive industry and electrical engineering. Main purposes of cold rolling processed are to provide high quality surface and generate appropriate roughness for different customs. Emulsion is a common coolant used in cold rolling processes, Properties of base oil in emulsion, concentration, roughness of work roll, rolling speed and reduction are important parameters, which dominate the surface qualities of cold rolled strip. Hence, a powerful cold rolling model which can describe complicate tribological behavior in roll bite is required. In this article, a cold rolling model which integrates roll deformation and mixed lubrication in inlet zone and biting area was developed. The thickness of oil film, fraction of contact area and coefficient of friction in roll bite are calculated.

APA, Harvard, Vancouver, ISO, and other styles

29

Tille, Martin, Benoit Staes, Gaetano Sardo, Andreas Müller, Toralf Saffer, and Frank Fabian. "Industrialization of New Developments in the Lubrication System of the Coupled Tandem Mill AMEKO at ArcelorMittal Eisenhüttenstadt with Henkel AG." Materials Science Forum 854 (May 2016): 243–48. http://dx.doi.org/10.4028/www.scientific.net/msf.854.243.

Full text

Abstract:

In flat cold rolling of steels, emulsions of rolling oil and water are normally used to cool and lubricate, i.e. up to 2.5 % oil is emulsified in water and sprayed on work rolls and sheet. In this article it is shown how the Henkel AG and ArcelorMittal Eisenhüttenstadt GmbH developed and industrialized successfully the thin film lubrication (TFL) in front of stand one of the AMEKO. With this device, pure rolling oil is sprayed onto the work rolls. This resulted in a rolling force decrease of approx. 4.5 % in the stand and a higher operating life of the work rolls. Furthermore, the FlexMix system of the Henkel AG is presented. Therewith it shall be possible to react flexibly on the lubrication conditions in the roll gap. Using two spray bars emulsion with higher concentration is sprayed onto the strip. Trial runs were carried out in front of rolling stand number two of the AMEKO. A rolling force reduction in the stand of up to 9.7 % was seen. Moreover up to 7.9 % of less current could be observed on the motors of this stand. The article illustrates the theoretical and practical basics on both developments including effects on the production of the AMEKO. Further an outlook is given of how future lubrication techniques can optimize the production of flat steel cold rolling mills.

APA, Harvard, Vancouver, ISO, and other styles

30

Cui, Ya-ya, Xiao-lei Wang, Hang-zhe Dong, and Zhen-hua Bai. "Comprehensive Optimization Control Technology of Rolling Energy and Oil Consumption in Double Cold Rolling." ISIJ International 59, no. 6 (June 15, 2019): 1081–88. http://dx.doi.org/10.2355/isijinternational.isijint-2018-723.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Xia, Wen Zhen, Jing Wei Zhao, Hui Wu, Si Hai Jiao, and Zheng Yi Jiang. "Study on Tribological Property of Nano-TiO₂ Additive Oil-in-Water Lubricant during Hot Rolling." Materials Science Forum 874 (October 2016): 381–86. http://dx.doi.org/10.4028/www.scientific.net/msf.874.381.

Full text

Abstract:

Oxide scale formed on the steel surface during hot rolling affects the tribological property of nanoTiO2 additive oil-in-water (O/W) lubricant, resulting in changes of roll forces, torques and power consumption, as well as the wear and the surface quality of the work roll and workpiece in hot rolling. The nanoparticle additive O/W emulsion is a novel lubricant and has a great potential to be used in hot rolling process. However, little research has focused on the nanoparticle additive O/W emulsion. In this study, oxidation, tribological and hot rolling tests were conducted to investigate the tribological behaviour of nanoTiO2 additive O/W lubricant. The results indicate that the surface morphology of the oxide scale plays an important role in tribological behaviour of nanoTiO2 additive O/W lubricants. The coefficient of friction (COF) and rolling force are reduced with the addition of nanoTiO2 particles into the 1.0% (mass %, oil concentration) O/W lubricant. This study is helpful in applying the nanoTiO2 additive O/W lubricant during hot rolling to realise reduction of rolling force and power consumption.

APA, Harvard, Vancouver, ISO, and other styles

32

Han, Ka, Junning Li, Qian Wang, Wuge Chen, and Jiafan Xue. "Study on oil film pressure distribution and load capacity of textured rolling bearings." Industrial Lubrication and Tribology 72, no. 7 (April 13, 2020): 961–67. http://dx.doi.org/10.1108/ilt-02-2020-0055.

Full text

Abstract:

Purpose The purpose of this study is to reveal the tribological performance of the textured rolling bearing. Design/methodology/approach In the present study, the oil film pressure distribution and load capacity analysis method are established, which integrate the micro-texture model and Hydrodynamic lubrication (HL) methods. The tribological performances of the textured rolling bearing under the various working condition, texture dimension and texture type are investigated systematically. Findings The results show that the oil film load capacity increases with the increase in the texture size. As the texture depth increases, the oil film load capacity increases first and then decreases, and then the load capacity is the largest at the texture depth range of 3 to 5 µm. In addition, the oil film load capacity of the matching pairs, such as Si4N3-Si4N3, GCr15- Si4N3 and GCr15-GCr15 are compared; the results show that the cases of using ceramic material can improve oil film load capacity of textured rolling bearing. Originality/value The current manuscript can be useful for supporting the reliability and life research of textured rolling bearing. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2020-0055

APA, Harvard, Vancouver, ISO, and other styles

33

KOZDRACH, Rafał. "THE INFLUENCE OF DIFFERENT VEGETABLE DISPERSION PHASES ON THE ROLLING CONTACT FATIGUE OF BIODEGRADABLE LUBRICATING GREASES." Tribologia 270, no. 6 (December 31, 2016): 57–67. http://dx.doi.org/10.5604/01.3001.0010.6716.

Full text

Abstract:

The paper discusses the influence of the vegetable dispersion phase on the rolling contact fatigue of bearings lubricated with ecological lubricating compositions. Four vegetable oils were used for the production of lubricating greases: rapeseed, sunflower, soybean, and castor. For comparison purposes, the synthetic and mineral oils were used as well. The rolling contact fatigue (pitting) of bearings lubricated with particular compositions were investigated and evaluated for each base oil. The tribological tests were carried out using T-03 four-ball machine under high load conditions. Based on the obtained results, it may be concluded that vegetable oils, such as rapeseed, sunflower and castor, as the base of lubricating grease positively affected the rolling contact fatigue of tribosystems lubricated with the above-mentioned compositions in comparison to the control lubricated with greases based on mineral or synthetic oil. There is no favourable change in rolling contact fatigue of tribosystems lubricated with greases based on soybean oil.

APA, Harvard, Vancouver, ISO, and other styles

34

Fuentes, Eduardo, Wilson Rodríguez-Pérez, Luis Guzmán, Marcelo Alarcón, Simón Navarrete, Oscar Forero-Doria, and Iván Palomo. "Mauritia flexuosaPresentsIn VitroandIn VivoAntiplatelet and Antithrombotic Activities." Evidence-Based Complementary and Alternative Medicine 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/653257.

Full text

Abstract:

Fruit from the palmMauritia flexuosais one of the most important species in Peru, Venezuela, Brazil, Colombia, Bolivia, and Guyana. The present study aimed to investigate the antiplatelet and antithrombotic activities of oil extracted fromMauritia flexuosa. The fatty acid contents were determined by gas chromatography—mass spectrometry. Oil extract of peel ofMauritia flexuosawas extracted by soxhlet extraction. The oil extract inhibited platelet secretion and aggregation induced by ADP, collagen, and TRAP-6 by a concentration-dependent way (0.1 to 1 mg/mL) without the participation of the adenylyl cyclase pathway and diminished platelet rolling and firm adhesion under flow conditions. Furthermore, the oil extract induced a marked increase in the rolling speed of leukocytes retained on the platelet surface, reflecting a reduction of rolling and less adhesion. At the concentrations used, the oil extract significantly decreased platelet release of sP-selectin, an atherosclerotic-related inflammatory mediator. Oil extract inhibited thrombus growth at the same concentration as that of aspirin, a classical reference drug. Finally, the data presented herein also demonstrate for the first time to our knowledge the protective effect of oil extracted fromMauritia flexuosaon platelet activation and thrombosis formation.

APA, Harvard, Vancouver, ISO, and other styles

35

Wolff, R., T. Nonaka, A. Kubo, and K. Matsuo. "Thermal Elastohydrodynamic Lubrication of Rolling/Sliding Line Contacts." Journal of Tribology 114, no. 4 (October 1, 1992): 706–13. http://dx.doi.org/10.1115/1.2920939.

Full text

Abstract:

The solution of thermal elastohydrodynamic lubrication of rolling/sliding line contacts has been obtained. The Newton-Raphson technique was used to solve the simultaneous system of Reynolds and elasticity equations. The energy equation with boundary conditions was solved by the finite-difference method. Two models were developed: one with a constant viscosity across the oil film and another with a variable viscosity across the oil film. Different viscosity formulas such as modified WLF, Roelands, and Barus can be used in these models. Viscosity measurements were also performed over wide ranges of pressure and temperature. A very good fitting of experimentally measured viscosity by modified WLF formula was obtained. The oil film shape and minimum film thickness were calculated for pure rolling and high slip. For high slip and high rolling velocity, a tapered wedge shape of EHL film (in the longitudinal direction) was obtained. These results show a good correlation with measurements reported in other papers. They show that there is a significant influence of temperature on the oil film shape.

APA, Harvard, Vancouver, ISO, and other styles

36

Yu, Guojun, Sheng Jia, and Yanting Geng. "Numerical Investigation into the Two-Phase Convective Heat Transfer within the Hold of an Oil Tanker Subjected to a Rolling Motion." Journal of Marine Science and Engineering 7, no. 4 (April 3, 2019): 94. http://dx.doi.org/10.3390/jmse7040094.

Full text

Abstract:

A crude oil tanker usually encounters a rolling motion during sea transportation, which leads to rotational movement and sometimes a sloshing of the liquid hold. This rolling-induced body motion seriously affects the thermal and hydraulic behavior of the liquid hold, which then affects the heating process and heat preservation of the tanker. Clarification of the involved thermal and hydraulic characteristics is the basic requirement for establishment of a scientific heating scheme and heat preservation method. A two-phase 3D model considering the free liquid surface and non-Newtonian behavior of the fluid was established for the thermal calculation of the liquid holds in oil tankers. The thermal and hydraulic characteristics of the liquid hold were investigated under different combinations of dimensionless parameters, and the combined effect of rolling and fluid non-Newtonian behavior was investigated. It was found that rolling intensifies the heat transfer based on the combination of the Richardson number (Ri) and the rotation-strength number (ω*), and non-Newtonian behavior of the fluid effectively affects the heat transfer in a rolling motion. This research is expected to provide a reference for design and optimization of the heating and heat preservation method for oil tanker operation.

APA, Harvard, Vancouver, ISO, and other styles

37

Bai, Xiu Qin, Han Liang Xiao, and Lu Zhang. "The Condition Monitoring of Large Slewing Bearing Based on Oil Analysis Method." Key Engineering Materials 474-476 (April 2011): 716–19. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.716.

Full text

Abstract:

Large slewing bearing is a special kind of rolling bearing with heavy load and very low rotation speed. It is important to carry out faults monitoring on this kind of rolling bearing. However, it is difficult to carry out vibration monitoring on such large slewing bearing. The running conditions of slewing bearings of ship loader and stacking crane in Qinghuangdao Port were analyzed using ferrography and spectrometric analysis technology. Monitoring results showed that the slewing bearing of SL-Q1 ship loader was under abnormal wear condition. Further inspection indicated that the rolling elements of this bearing underwent severe wear and broke down. This suggested that it was feasible to evaluating the wear conditions of this type of large low-speed heavy-load rolling bearing using ferrography and spectrometric analysis.

APA, Harvard, Vancouver, ISO, and other styles

38

Sun, Jian Lin, Guo Hong Ding, Lei Xia, Bing Yun, and Ze Sheng Ji. "Research on the Color Difference on Surface of 3104 Aluminum Alloy Stripes during Cold Continuous Rolling Process." Advanced Materials Research 557-559 (July 2012): 1383–86. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1383.

Full text

Abstract:

Color difference on surface of aluminum alloy stripes when lubricated with oil-water mixtures in cold continuous rolling process was researched. The surface profile, 3D and micro morphology were observed by surface surface profiler, laser scanning confocal microscopeand scanning electron microscope. The chemical composition of aluminum surface was analyzed by X-ray energy dispersive spectrometer, and then the formation mechanism of color difference was studied. The results indicate that lubricated with oil-water mixture, oil and water can't mix sufficiently and lubrication failure was found in deformation zone because of lubrication oil shortage. Working roller and fresh surface of stripes contacted directly and leaded to adhesive, so lots of irregular shaped micro-cracks were found after rolling, the residual composition of oil-water mixture adsorbed in the micro-cracks and not easy to be cleaned up, so the organic matter of residue composition carbonized and manifested as color difference in the visible. The fringes of color difference are distributed approximately along the rolling direction and the average roughness was very nearly the same between different kinds of fringes.

APA, Harvard, Vancouver, ISO, and other styles

39

Kong, Ning, Kiet Tieu, Hong Tao Zhu, Qiang Zhu, and Peter Gandy. "Effects of Lubrication in Ferrite Rolling of Interstitial Free Steel." Materials Science Forum 773-774 (November 2013): 186–91. http://dx.doi.org/10.4028/www.scientific.net/msf.773-774.186.

Full text

Abstract:

Ferrite rolling of interstitial free steel strip in the temperature range 650-850°C can effectively reduce furnace costs and scale formation as a result of lower strip reheating temperatures. Different lubrication conditions of lubricating oil, solid lubricant and dry condition were used during ferrite rolling tests of thin interstitial free steel strip on a 2-high Hille 100 experimental rolling mill. Different rolling speed, rolling temperature and reductions were applied to the rolling process. The rolling force and roll roughness were affected by the lubrication conditions and rolling parameters. Solid lubricant indicated an improved performance in terms of the roll roughness, as well as the oxidation property of the strip surface during ferrite rolling.

APA, Harvard, Vancouver, ISO, and other styles

40

Tong, Bao Hong, Xiao Qian Sun, and Hong Su. "Numerical Simulation on Internal Flow Field of Rolling Bearing under Oil-Air Lubrication." Applied Mechanics and Materials 271-272 (December 2012): 1056–61. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.1056.

Full text

Abstract:

Heat dissipation and working efficiency of transport air in rolling bearing under oil-air lubrication are closely related to the flowing state of oil-air in bearing chamber. For cylindrical roller bearing NF211, numerical simulation model of oil-air flow field in bearing chamber was established combining with the practical structure features of rolling bearing and ignoring the effect caused by roller rotation. Combining with flow field numerical simulation functions of Fluent software, simulation analysis of the flow state in bearing chamber were carried out. Based on k-ε turbulent model, three-dimensional flow field in the bearing chamber and main feature parameters of inner flow were got analyzed carefully considering the effect of twirling. Comparing with the numerical simulation of simplified flow field, it showed that energy dissipation and axial velocity of the air were influenced by the effect of twirling distinctly. Simulation results were expected to give useful references for the optimization design of the oil-air lubrication system in rolling bearing.

APA, Harvard, Vancouver, ISO, and other styles

41

Ma, Song Jiang, Hai Wu Jia, Fang Wen Li, Mei Ling Fu, and Xiang Jiang Wu. "Treatment of Steel Rolling Oily Wastewater: Performance of a CTAB Modified Resin Fixed Column." Applied Mechanics and Materials 44-47 (December 2010): 2121–25. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2121.

Full text

Abstract:

The effect of operating conditions on the performance of a CTAB modified resin column used for the treatment of steel rolling oily wastewater was investigated. The influence of flow rate, influent oil concentration, fixed column height and influent pH was studied. Experimental results showed that several processes were involved in oil removal from rolling oily wastewater, i.e. emulsion breakdown, coalescence and adsorption. More than 95% of oil content in the influent stream was removed by the modified resin column and it increased by 15% compared with the unmodified resin column.

APA, Harvard, Vancouver, ISO, and other styles

42

Gao, Jing Zhong, Shu De Zhou, Guo Liang Zhang, and Xiang Hua Kong. "Study on the Formation Mechanism and Control of Untrimmed Aluminium Foil’s Surface Dirty Defect." Advanced Materials Research 485 (February 2012): 433–37. http://dx.doi.org/10.4028/www.scientific.net/amr.485.433.

Full text

Abstract:

The surface dirty defect of untrimmed aluminum foil was analyzed by SEM and EDS. The results show that the amount of the aluminum powders on the cold rolling sheet is too much, which caused the surface dirty defect. The quantitative analysis of dealumination demonstrated that the oil film strength of rolling process is the key factor to solving the dirty defect, the larger oil film strength, the smaller dealuminated quantity. When oil film strength is more than 290 N, dealuminated quantity will decrease. By increasing casting rate and improving oil film strength in sheet and strip process, the surface dirty defect on untrimmed surface is successfully eliminated.

APA, Harvard, Vancouver, ISO, and other styles

43

Shamim, A., and C. F. Kettleborough. "Tribological Performance Evaluation of Oil Mist Lubrication." Journal of Energy Resources Technology 116, no. 3 (September 1, 1994): 224–31. http://dx.doi.org/10.1115/1.2906447.

Full text

Abstract:

In this research work, the tribological performance of oil mist lubrication (pure mist), as applied to rolling element bearings, was investigated. In the first part of this research, tests were conducted to compare the performances of oil mist and conventional oil sump lubrication in terms of operating temperature and friction with variation of load and speed. In the second part, the two methods of lubrication were compared directly under endurance test conditions. The oil mist lubricated high-precision angular contact test bearings ran cooler by about 10°C. Also, the oil mist lubricated bearings had about 25 percent less friction. In the third part, endurance tests were conducted to investigate the influence of oil mist lubrication on the life of rolling element bearings. Weibull and maximum likelihood analysis of the endurance test data indicated that, in addition to savings in energy, oil mist lubrication provides better wear and fatigue protection to the test bearings compared to conventional sump lubrication.

APA, Harvard, Vancouver, ISO, and other styles

44

Malyutina, T. D. "Retrospective analysis of energy sanctions against Russia and their impact on operations of pipe-rolling plants." National Interests: Priorities and Security 16, no. 3 (March 16, 2020): 536–46. http://dx.doi.org/10.24891/ni.16.3.536.

Full text

Abstract:

Subject. The article focuses on sanctions against Russia’s energy sector. Objectives. The article represents my own comprehensive study into sanctions against Russia’s energy sector and their impact on operations of pipe-rolling plants. The study spotlights the most significant milestones of the oil and gas industry, analyzes the sectoral impact on the development of pipe-rolling plants and pressure of the war against pipelines on the Russian manufacturers. Methods. The study employs methods of comparison, research, monographs and logic. Results. What distinguishes the Russian pipe-rolling plants is their importance for operations of oil and gas producing sectors. Based on the retrospective analysis of energy sanctions against Russia, I conclude that tensions in economic relations of European countries, and the USA and Russia last too long. Energy sanctions definitely influence operations of pipe-rolling plants. Export barriers obstructed the influx of investment into the respective sector and affected the financial performance of enterprises. However, a drop in exports of pipe-rolling plants’ products fuels their domestic distribution plans, thus contributing to the positive economic situation nationwide. Conclusions and Relevance. Economic sanctions will influence the development of the Russian oil and gas companies in the distant future, since the Russian enterprises manufacture high-tech products insufficiently, while supplies from China are not yet reliable. Sanctions against Russia trigger the development of the Russian enterprises manufacturing high-tech products and large diameter pipes for the oil and gas industry.

APA, Harvard, Vancouver, ISO, and other styles

45

Fedorov, Yu N., and O. V. Aksenova. "Problems with oil-containing wastes in rolling mills, and methods of oil reclaiming." Chemistry and Technology of Fuels and Oils 23, no. 11 (November 1987): 543–45. http://dx.doi.org/10.1007/bf00725742.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Slavov, V. I., N. A. Popkova, and Sergei Ya Betsofen. "Recrystallisation, Structure, Texture and Properties of Pipe Steel Rolled at Wide Temperature Range." Materials Science Forum 558-559 (October 2007): 581–87. http://dx.doi.org/10.4028/www.scientific.net/msf.558-559.581.

Full text

Abstract:

Methods of complex X-ray and metallographic analyses have been used to investigate the influence of texture, thin structure and grain boundaries of coiled low-alloyed steel for gas-and-oil pipeline tubes after hot rolling on its mechanical properties. Finish rolling temperature changes in a wide range (ТFR = 8900С-5300С). Specifics of steel structure formation under conditions of dynamic (controlled rolling) and static (high-and-low temperature rolling) recrystallization have been found.

APA, Harvard, Vancouver, ISO, and other styles

47

AZUSHIMA, Akira, Jiro SANO, and Takahiro YAGI. "Emulsion Type Rolling Oil with High Performance for Friction Pickup in High Speed Cold Rolling." Tetsu-to-Hagane 90, no. 3 (2004): 128–33. http://dx.doi.org/10.2355/tetsutohagane1955.90.3_128.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Hidaka, H., Kouji Ueda, and N. Mitamura. "Rolling Contact Fatigue Type Analysis of Rolling Bearing by XRD and TEM." Materials Science Forum 706-709 (January 2012): 1679–84. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.1679.

Full text

Abstract:

In the rolling bearing, the flaking caused by rolling contact fatigue is classified into two types: surface originated flaking and subsurface originated flaking. It has been recognized that marked microstructural change can occur in subsurface originated flaking due to rolling contact fatigue. But there are few reports in surface originated flaking about microstructural change. In this study, surface originated flaking caused by rolling contact fatigue was investigated based on microstructural change. Thrust ball bearing and radial ball bearing was used for fatigue test. Simulation of dent originated flaking was carried out using the bearing with artificial dent. Another fatigue test subjected to surface originated flaking was done under shortage of oil film thickness lubrication condition. Microstructural change was measured by X-ray Diffractmetry (XRD) and Transmission Electron Microscopy (TEM) during fatigue testing. Microstructure of bearing steel used for fatigue test is consisted of martensite with small amount of retained austenite. XRD measurement reveals that the half peak width of martensite and volume fraction of retained austenite decreasing with increasing testing time, and the amount of decrease in these parameter were small in the surface originated flaking compared with subsurface originated flaking when the specimens were flaking. This suggests that surface originated flaking occurs in spite of mild microstructural change. TEM observation about the surface originated flaking shows plastic flow in the surface layer. Especially, it was confirmed that partial recrystallization occurs in the fatigue test under shortage of oil film thickness lubrication condition. But it was also confirmed that degree of recrystallization is lower in the surface originated flaking than subsurface one, and this reasonably explains XRD result. From these results, it was cleared that recrystallizaiton of martensite is differ in degree but not in kind between surface originated flaking and subsurface originated flaking.

APA, Harvard, Vancouver, ISO, and other styles

49

Schmid, Steven R., and William R. D. Wilson. "Lubrication of Aluminum Rolling by Oil-in-Water Emulsions." Tribology Transactions 38, no. 2 (January 1995): 452–58. http://dx.doi.org/10.1080/10402009508983428.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Fang, Xue-Qian, Fu-Ning Liu, and Shao-Pu Yang. "Nonlinear dynamic analysis of worn oil-lubricated rolling bearings." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 234, no. 2 (February 20, 2020): 214–21. http://dx.doi.org/10.1177/0954408920907541.

Full text

Abstract:

Based on the elastohydrodynamic theory, the nonlinear dynamic behavior of worn oil-lubricated rolling bearings is explored, and the dynamic response including the effect of trajectory of the axis center, the accelerated speed, and the film thickness is analyzed. The worn model is represented by the worn depth. The discrete iterative method and implicit Euler method are combined to solve the dynamic equations. In numerical examples, the trajectory of the axis center, the accelerated speed and the film thickness under different worn depths are discussed. It is found that the stabilized point shows significant variation with the worn depth, and the wear effect is also quite related with the rolling speed. The trajectory of the axis center of worn bearing subjected to a step load is also examined in detail.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Rolling oil'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles