Статті в журналах: "Mechanical grinding"

1

Rasuljon, Tojiev, Azizbek Isomiddinov, Bobojon Ortiqaliyev, and Boyqo‘Zi Khursanov. "INFLUENCE OF PREVIOUS MECHANICAL TREATMENTS ON MATERIAL GRINDING." International Journal of Advance Scientific Research 02, no. 11 (November 1, 2022): 35–43. http://dx.doi.org/10.37547/ijasr-02-11-06.

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2

Shiga, Shinya, Takayuki Norimatsu, Tsuyoshi Itsukaichi, Minoru Umemoto, and Isao Okane. "Mechanical Alloying and Mechanical Grinding of Al75Ni25." Journal of the Japan Society of Powder and Powder Metallurgy 38, no. 7 (1991): 976–80. http://dx.doi.org/10.2497/jjspm.38.976.

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3

HARA, Shigeo, and Toshio SAITOU. "Influence of Grinding Fluids on Grinding Cracks. Study on Grinding Cracks in Creep Feed Grinding." Journal of the Japan Society for Precision Engineering 59, no. 2 (1993): 252–56. http://dx.doi.org/10.2493/jjspe.59.252.

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4

Zhou, Fu Fang, Bao Gai Zhai, Zhuo Ran She, Yuan Ming Huang, and Chun Xu Pan. "Mechanical Grinding: An Effective Method to Control the Conductivity of p-Toluene Sulfonic Acid Doped Polypyrrole." Key Engineering Materials 407-408 (February 2009): 573–76. http://dx.doi.org/10.4028/www.scientific.net/kem.407-408.573.

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With four-probe and laser light scattering techniques, we have studied the dependencies of the conductivity and the particle sizes of p-toluene sulfonic acid doped polypyrrole on the mechanical grinding time. As the chemically synthesized polypyrrole was mechanically grounded in a mortar from 0 to 8 hours, its conductivity decreased from 607 to 10 S/m while and its particle size decreased from 27 to 4 m. If the mechanical grinding continued, the conductivity of the polymer was found to be up to 1680 S/m. Our results have demonstrated that mechanical grinding is an effective method to control the conductivity of the p-toluene sulfonic acid doped polypyrrole.

5

INASAKI, Ichiro. "Grinding." Journal of the Japan Society for Precision Engineering 75, no. 1 (2009): 72–73. http://dx.doi.org/10.2493/jjspe.75.72.

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6

Kabanov, Vadim. "The Cement Mechanical Activation Effective Application Field Determination." Materials Science Forum 1011 (September 2020): 31–36. http://dx.doi.org/10.4028/www.scientific.net/msf.1011.31.

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Of all the known methods for increasing the cement activity, mechanical grinding is distinguished in the work. For mechanical grinding, technological characteristics of grinding in an electromagnetic field are established (mill - linear induction rotator, LIV). The value of the increment of activity is determined depending on its initial (initial) value. To determine the estimated value of the cement consumption, the methods provided by the state standard of the Russian Federation were used. The experiments, as well as the measurement of the compressive strength (R), were carried out in accordance with the GOST requirements. The cement mechanical grinding effective application field in electromagnetic field is determined by comparing the costs and savings. The costs are calculated as the cost of electricity needed for grinding. The savings are the cost of the established difference between the cement consumption for the initial activity of cement and the actual value, which is able to provide the concrete with a given design strength. The results describing the field of the cement mechanical grinding effective application are presented in tabular form and graphically. When determining the area of the mechanical grinding effective use, the conclusion that it is necessary to adjust the technological grinding regimes depending on the initial activity of the cement, as well as on the chemical composition of the clinker (manufacturer) was confirmed. The prospects for the research on mechanical grinding technology are associated with obtaining grinding regimes depending on the initial size and composition of the clinker. The area of effective application of mechanical activation should be determined each time depending on the physical and mechanical cement properties.

7

Rodríguez Torres, C. E., Francisco H. Sánchez, L. Mendoza-Zélis, and M. B. Fernández Van Raap. "Mechanical Grinding of Iron Borides." Materials Science Forum 179-181 (February 1995): 103–8. http://dx.doi.org/10.4028/www.scientific.net/msf.179-181.103.

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8

ZHOU, Li bo, Shinji KAWAI, Jun SHIMIZU, Hiroshi EDA, and Shunichiro KIMURA. "Research on Chemo-Mechanical Grinding." Proceedings of The Manufacturing & Machine Tool Conference 2002.4 (2002): 97–98. http://dx.doi.org/10.1299/jsmemmt.2002.4.97.

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9

Rodríguez Torres, C. E., F. H. Sánchez, and L. A. Mendoza Zélis. "Decomposition ofFe2B by mechanical grinding." Physical Review B 51, no. 18 (May 1, 1995): 12142–48. http://dx.doi.org/10.1103/physrevb.51.12142.

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10

Sun, Hao, and Yi Hua Feng. "The Research of Minimum Quantity Lubrication Mechanism in Grinding with Mechanical Mechanics." Applied Mechanics and Materials 252 (December 2012): 129–33. http://dx.doi.org/10.4028/www.scientific.net/amm.252.129.

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Effective cooling and lubricating is got by use a small amount of cutting fluid in MQL grinding. Compare grinding performance under various cooling lubrication, reasonable grinding temperature, lower grinding force, improved surface quality and extended wheel life is got in MQL grinding. The grinding performance of MQL grinding is also influenced by many factors, such as the nozzle shape, position, distance, and MQL flow rate.

11

Kosmac, T., and T. H. Courtney. "Milling and mechanical alloying of inorganic nonmetallics." Journal of Materials Research 7, no. 6 (June 1992): 1519–25. http://dx.doi.org/10.1557/jmr.1992.1519.

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The versatility of mechanochemical processing was investigated in a number of nonmetallic inorganic systems. It is shown that high energy grinding can be used to produce amorphous carbon from synthetic graphite and some forms of natural graphite. Elemental sulfur can likewise be amorphized by prolonged high energy grinding. Phase transformations of αFe2O3 (hematite) and mechanochemical reactions of this phase with ZnO and NiO are strongly influenced by the presence of iron resulting from wear of the grinding media. Thus spinel type ferrites were obtained by grinding of such mixtures for short times (1–3 h in a Spex mill); however, longer grinding times resulted in the formation of FeO or (Fe,Zn)O (when grinding ZnO) or FeO or (Fe, Ni)O (when grinding NiO), presumably as a result of the reaction of mill wear debris with the mill charge. The suspected (Fe, Zn)O phase is most likely a nonequilibrium solid solution. Negligible were accompanied the mechanochemical synthesis of NiS and ZnS from elemental powders. These sulfides were formed for short milling times. In contrast, sulfides of tungsten were not formed even when rather long milling times were employed. The survey of mechanochemical reactions presented here further reinforces the concept that this low temperature synthesis method is a robust process route for production of a wide range of materials.

12

Li, Li. "Mechanical grinding method of multi-axis linkage for elliptic contour based on algebraic geometry." Thermal Science 24, no. 3 Part A (2020): 1561–68. http://dx.doi.org/10.2298/tsci190611022l.

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Aiming at the shortcomings of traditional elliptic contour grinding methods, such as large grinding roughness and poor contour accuracy, a multi-axis mechanical grinding method based on algebraic geometry is proposed. This method studies the first attempt of elliptic contour. The process includes selecting suitable multi-axis grinding tools and selecting appropriate grinding methods according to grinding process. Using specific workpieces, grinding path planning, motion attitude determination and error compensation based on algebraic geometry for multi-axis mechanical grinding are carried out. The results show that compared with the traditional grinding method, the device has the smallest surface roughness, the contour radian is closer to the expected results, and has higher performance, which solves the grinding defects.

13

Jin, Zhu Ji, Ze Wei Yuan, Ren Ke Kang, and B. X. Dong. "Study on Two Kinds of Grinding Wheels for Dynamic Friction Polishing of CVD Diamond Film." Key Engineering Materials 389-390 (September 2008): 217–22. http://dx.doi.org/10.4028/www.scientific.net/kem.389-390.217.

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This paper investigates two kinds of grinding wheels prepared by the combination of mechanical alloy and hot-press sintering (MA-HPS). Scanning electro microscopy, Optical microscope, Talysurf surface profiler, X-Ray diffraction and Raman spectroscopy were used to characterize two kinds of grinding wheels and identify the removal mechanism. It was found that FeNiCr matrix-TiC (FMT) grinding wheel yielded higher removal rate than TiAl abrasiveless carbophile (TAC) grinding wheel, which conversely owned good polishing quality; diamond was removed by transformation diamond to non-diamond carbons and then removed by mechanically or diffusion to grinding wheel during polishing process with FMT grinding wheel. While TAC grinding wheel polishing CVD diamond film mainly depended on the reaction between diamond carbon and titanium.

14

MATSUO, Tetsuo. "Heavy Grinding and High Efficiency Grinding Technology." Journal of the Japan Society for Precision Engineering 75, no. 1 (2009): 40. http://dx.doi.org/10.2493/jjspe.75.40.

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15

Sawa, Takekazu, Naohiro Nishikawa, and Yasushi Ikuse. "Evaluation of Grinding Performance by Mechanical Properties of Super Abrasive Wheel - Evaluation of Grade by Grinding Force." Key Engineering Materials 656-657 (July 2015): 266–70. http://dx.doi.org/10.4028/www.scientific.net/kem.656-657.266.

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There is the grade as one of the selection criteria of a grinding wheel like WA whetstone or GC whetstone. The grade of grinding wheel is defined as an index which shows the strength of connection of a grain and a grain, and is usually estimated by bending strength. There are many papers about the relationship between the grade of a grinding wheel and the grinding performance. And, the relationship between the grade of a grinding wheel and the grinding performance is almost clear. Also, the relationship between mechanical properties of a grinding wheel and the grade is also clear. On the other hand, since the grain layer of a super abrasive grinding wheel is thin, it is difficult to apply the conventional evaluation test of the grade. And, the evaluation method of the grade which can be adapted the super abrasive grinding wheel is not established. In addition, since the grade of a super abrasive grinding wheel is a manufacture manufacturer's original standard, there is a minute difference by manufacturer. The super abrasive grinding wheel as well as the grinding wheel is conjectured that the grade influences the grinding performance. Namely, it is important to relate the grade and the mechanical properties of a grain layer. However, researches which relate the grade, the grinding performance and the mechanical properties of a super abrasive grinding wheel are not done so far. Therefore, this study examined the relationship between the mechanical properties of a grain layer of a super abrasive grinding wheel and the grade, the grinding performance. The final objective of this study is to evaluate the grinding performance from mechanical properties of a grain layer of a super abrasive grinding wheel. The purpose of this report is to clarify relationship between the grade and the grinding force in a resinoid bond diamond wheel. The specific experiment procedure is as follows. When carrying out surface grinding of the diamond sticks using a grinding wheel, the relationship of the grade and the grinding force was clarified. And based on the knowledge acquired in this experiment, relationship between the grade of a super abrasive grinding wheel and the grinding force was considered. As the results, it confirmed that the grade of a resinoid bond diamond wheel could be evaluated by the grinding force.

16

Sheng, Jia Wei, Li Ping Zhang, Jun Yan, Qing Sun, and Jian Zhang. "Nano-Structural Alteration of Pyrophyllite by Grinding Revealed by X-Ray Diffraction and High-Resolution Transmission Electron Microscopy." Journal of Nano Research 40 (March 2016): 72–78. http://dx.doi.org/10.4028/www.scientific.net/jnanor.40.72.

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The mechanical destruction of the pyrophyllite structure and final ground products upon grinding with a laboratory planetary ball mill were investigated using high-resolution transmission electron microscope (HRTEM) coupled with selected area electron diffraction (SAED), field emission scanning electron microscope (SEM) and X-ray diffraction (XRD). Grinding produced a profound structural alteration, resulting in increasing amorphization. Increasing the intensity of grinding resulted in acceleration of the mechanically induced amorphization of the pyrophyllite structure. The pyrophyllite phase was transformed into its anhydride phase during the process of the prolonged grinding. Increasing the grinding intensity resulted in faster destruction of the pyrophyllite structure. The plate-like microcrystal exhibited the 2M-pyrophyllite crystal structure. The pyrophyllite anhydride phase was existed after grinding.

17

Abdelhaffez, Gamal S., Haitham M. Ahmed, and Hussein A. Saleem. "Effect of ore heterogeneity on the ball mill wear rate during a grinding process at gold mines of Saudi Arabia (KSA)." Mining of Mineral Deposits 17, no. 2 (June 30, 2023): 71–81. http://dx.doi.org/10.33271/mining17.02.071.

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Purpose. The current research aims to study the effect of gold ore grinding on the wear rate of grinding balls. Methods. Six boulder rock samples were selected from some KSA mines; five core samples were taken from each of them to identify the mechanical properties (compressive strength, Young’s modulus, and Poisson’s ratio). These mechanical properties were applied to identify the hardness class of all 30 core samples. Five samples with different mechanical properties from the same boulder sample were milled to study the effect of the compressive strength difference and grinding time on wear rate. Then, six samples were taken from different regions with similar mechanical properties but different petrographic characteristics. They were also milled under the same grinding conditions to study the effect of the microscopic mineral composition on the wear rate. Findings. The results showed that the wear rate increased with the improving mechanical properties and with the increa-sing grinding time. On the other hand, the results based on different microscopic descriptions of the six samples showed that despite similar mechanical properties, the wear rates differed. Petrographic characteristics confirmed the presence of quartz in most of the samples as an associated mineral; it is likely that it has the greatest effect on the grinding ball wear. Originality. The paper proposes a method for investigating ore heterogeneity, which has a major impact on the wear rate during a grinding process, as well as on the reducing costs and improving efficiency of grinding media. Practical implications. The research emphasizes the importance of investigating variables (e.g. ore heterogeneity) other than ball size, grinding medium composition, and wet or dry grinding that have a substantial impact on grinding efficiency. The findings could be applied in feasibility studies to calculate and evaluate grinding costs versus grinding efficiency.

18

Chen, Xun, and James Griffin. "Grinding Acoustic Emission Classification in Terms of Mechanical Behaviours." Key Engineering Materials 329 (January 2007): 15–20. http://dx.doi.org/10.4028/www.scientific.net/kem.329.15.

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The material removal in grinding involves rubbing, ploughing and cutting. For grinding process monitoring, it is important to identify the effects of these different phenomena experienced during grinding. A fundamental investigation has been made with single grit cutting tests. Acoustic Emission (AE) signals would give the information relating to the groove profile in terms of material removal and deformation. A combination of filters, Short-Time Fourier Transform (STFT), Wavelets Transform (WT), statistical windowing of the WT with the kurtosis, variance, skew, mean and time constant measurements provided the principle components for classifying the different grinding phenomena. Identification of different grinding phenomena was achieved from the principle components being trained and tested against a Neural Network (NN) representation.

19

WU, Yongbo, Katsuo SYOJI, Tsunemoto KURIYAGAWA, Toru TACHIBANA, and Masana KATO. "Evaluation of Grinding Conditions Using Dynamic Components of Grinding Force in Centerless Grinding." Journal of the Japan Society for Precision Engineering 67, no. 9 (2001): 1443–47. http://dx.doi.org/10.2493/jjspe.67.1443.

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20

Çiftçi, Hakan. "Mechanical Activation of Lizardite by Dry Grinding for Enhanced Mineral Carbonation." MATTER: International Journal of Science and Technology 9 (November 15, 2023): 101–12. http://dx.doi.org/10.20319/mijst.2023.9.101112.

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Mechanical activation of Ca/Mg silicates by grinding is a pre-treatment of some mineral carbonization processes. In this study, the mechanical activation of lizardite ore from a chromite beneficiation plant waste by grinding in a stirred media mill was studied. For grinding studies, grinding times of 10-20-30 min and stirring speeds of 600-800-1000-1200 rpm were the parameters investigated, while the ball charge rate was 60% and the ore charge rate was kept constant at 40%. This way, the effects of grinding time and stirring speed on particle size distribution and energy consumption were investigated. At the end of the grinding studies, the stirring speed was determined as 1200 rpm, and the grinding time was 10 min for the finer particle size distribution (d10: 2,7 µm, d50: 13,6 µm, d90: 57.6 µm) with less energy consumption (130.4 kWh/ton). FT-IR analyses proved that the samples were dehydroxylated by the milling process. As a result, according to the analysis performed after grinding, it can be said that the finer product obtained can be used in mineral carbonation processes.

21

Çiftçi, Hakan. "MECHANICAL ACTIVATION OF LIZARDITE BY DRY GRINDING FOR ENHANCED MINERAL CARBONATION." MATTER: International Journal of Science and Technology 9, no. 2 (November 15, 2023): 17–28. http://dx.doi.org/10.20319/mijst.2023.92.1728.

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Mechanical activation of Ca/Mg silicates by grinding is a pre-treatment of some mineral carbonization processes. In this study, the mechanical activation of lizardite ore from a chromite beneficiation plant waste by grinding in a stirred media mill was studied. For grinding studies, grinding times of 10-20-30 min and stirring speeds of 600-800-1000-1200 rpm were the parameters investigated, while the ball charge rate was 60% and the ore charge rate was kept constant at 40%. This way, the effects of grinding time and stirring speed on particle size distribution and energy consumption were investigated. At the end of the grinding studies, the stirring speed was determined as 1200 rpm, and the grinding time was 10 min for the finer particle size distribution (d10: 2,7 µm, d50: 13,6 µm, d90: 57.6 µm) with less energy consumption (130.4 kWh/ton). FT-IR analyses proved that the samples were dehydroxylated by the milling process. As a result, according to the analysis performed after grinding, it can be said that the finer product obtained can be used in mineral carbonation processes.

22

Lin, Qiang, Jun Guo, Heng-yu Wang, Wen-jian Wang, and Qi-yue Liu. "Optimal design of rail grinding patterns based on a rail grinding target profile." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232, no. 2 (December 5, 2016): 560–71. http://dx.doi.org/10.1177/0954409716679447.

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Based on the grinding target profile of the rail and the grinding capacity of a single grinding stone, a numerical calculation method for rail grinding patterns that includes grinding angle and grinding power of each grinding stone of the GMC96 rail grinding train was designed and established. By means of this numerical method, the grinding pattern of each grinding pass was optimized and the rail head profile after grinding was calculated. Furthermore, a method for the evaluation of the grinding quality is provided. The results indicate that in multipass rail grinding, a sequence of grinding passes – where the greatest grinding effort is applied on the earlier passes, with the last pass applying reducing levels of grinding effort – produces the highest conformance to the target grinding profile. For example, when rail grinding is planned for two passes, applying 60% of the total grinding effort on the first pass and 40% on the second pass decreases the final grinding error by 7.3%.

23

Locock, Andrew J., David Chesterman, Diane Caird, and M. John M. Duke. "Miniaturization of mechanical milling for powder X-ray diffraction." Powder Diffraction 27, no. 3 (August 17, 2012): 189–93. http://dx.doi.org/10.1017/s0885715612000516.

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To enable mechanical milling of small (0.1–1.0 g) samples, a cylindrical grinding vessel machined from polypropylene and furnished with tungsten carbide rods has been designed and produced for use inside the conventional jar of a McCrone Micronizing Mill. The vessel is about one-seventh the volume of the conventional jar supplied by the manufacturer. The conditions of milling for both the conventional and the miniaturized-grinding assemblies were tested using quartz sand as a limiting case. The median grain sizes of the resultant powders were measured by an X-ray gravitational-sedimentation method, with contamination from the grinding media measured by Rietveld refinement and by instrumental neutron activation analysis. The use of tungsten carbide grinding elements permits rapid wet milling of a small sample to the same median grain size in about one-third of the time required by a regular sample ground in corundum. The relative contamination (by tungsten carbide on a weight basis) using the miniaturized-grinding assembly is about 6(1)% of the proportion of corundum contamination yielded by the conventional grinding assembly.

24

Xiang, Dao-hui, Zhong-yun Liu, Zhi-kun Zhou, and Yun-long Yao. "Experimental study of single cubic boron nitride grains in the ultrasound-assisted high-speed grinding." Advances in Mechanical Engineering 9, no. 2 (February 2017): 168781401769354. http://dx.doi.org/10.1177/1687814017693543.

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The kinematic characteristics, grinding force, surface quality of workpiece surface, and wear of abrasive particles were studied by theoretical analysis and experimental study on the single cubic boron nitride abrasive particles under ultrasonic-assisted high-speed grinding. Under the condition of the same grinding parameters, the motion characteristics and the grinding forces of the two machining modes of general grinding and ultrasonic-assisted grinding are compared and analyzed. Research shows that the ultrasonic vibration is applied in the common external circular grinding on grinding particle movement characteristics changed obviously, grinding particle trajectory of variable length, cutting groove width wider, thereby improving the grinding efficiency and the grinding removal rate; ultrasonic assisted under high speed grinding, the grinding force is higher than that of common grinding force is small, efficiency of grinding under ultrasonic processing mode is much higher than ordinary grinding, the surface quality of the workpiece has improved markedly.

25

Liu, Tao, Zhaohui Deng, Lishu Lv, Shuailong She, Wei Liu, and Chengyao Luo. "Experimental Analysis of Process Parameter Effects on Vibrations in the High-Speed Grinding of a Camshaft." Strojniški vestnik – Journal of Mechanical Engineering 66, no. 3 (March 15, 2020): 175–83. http://dx.doi.org/10.5545/sv-jme.2019.6294.

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The capacity to minimize vibrations in grinding by the selection of appropriate process parameters is a significant benefit in the process optimization of cam grinding. This paper presents survey methods to characterize and quantify the vibrations and waviness in a camshaft grinding application. First, a modal analysis was conducted to study the dynamic characteristic of a camshaft grinding machine. Then, developed methods were applied to study the influences of various parameters on vibrations in the high-speed grinding of a camshaft. Furthermore, the influence of each grinding process condition on surface waviness in high-speed camshaft grinding was studied. The results show that the vibrations and the surface waviness change with the increase of grinding depth, and an appropriate grinding wheel speed combined with a workpiece speed has, for most grinding conditions, a reducing effect on vibration magnitudes and waviness. Finally, the specific indications about the optimal grinding process parameters in terms of dynamic characteristics of the grinding machine were given, and the speed ratio=1.2 is a novel choice.

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YOSHIHARA, Nobuhito, Keita SHIMADA, Masahiro MIZUNO, and Tsunemoto KURIYAGAWA. "Optimization of Grinding Conditions of Axisymmetric Aspherical Grinding." Journal of the Japan Society for Precision Engineering 88, no. 2 (February 5, 2022): 193–97. http://dx.doi.org/10.2493/jjspe.88.193.

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27

Zhu, Mengbo, Geng Xie, Lang Liu, Pan Yang, Huisheng Qu, and Caixin Zhang. "Influence of Mechanical Grinding on Particle Characteristics of Coal Gasification Slag." Materials 15, no. 17 (September 1, 2022): 6033. http://dx.doi.org/10.3390/ma15176033.

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Based on the test results of laser particle size analyzer, specific surface area analyzer and infrared spectrometer, the grinding kinetics of coal gasification slag (CGS) was systematically described by using Divas–Aliavden grinding kinetics, Rosin–Rammler–Bennet (RRB) distribution model and particle size fractal theory. The influence of grinding time and particle group of CGS on the strength activity index of mortar was studied by using the strength activity index of mortar and grey correlation analysis. The results show that the particles are gradually refined before mechanical grinding of CGS for 75 min. When the mechanical grinding time is greater than 75 min, the “agglomeration phenomenon” of fine CGS particles led to the decrease in various properties. Divas–Aliavden grinding kinetics, the RRB model and fractal dimension can characterize the change of CGS particle size in the grinding process quantitatively. The strength activity index of CGS at different curing ages is positively correlated with grinding time, and the influence on the later strength activity index is the most obvious. The relationship between CGS particle size distribution and strength activity index were probed using grey correlation analysis. The CGS particle groups with the particle size of 20~30 μm and 10~20 μm have the greatest impact on the early and late strength activity index, respectively. Therefore, the optimal grinding time of CGS as auxiliary cementing material is 75 min, considering factors, such as economy and performance, and the specific surface area (SSA) is 4.4874 m2·g−1.

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Jafarpour, Vahid, and Rasoul Moharrami. "Numerical Stress Analysis of Creep-Feed Grinding Through Finite Element Method in Inconel Alloy X-750." Mapta Journal of Mechanical and Industrial Engineering (MJMIE) 6, no. 01 (March 23, 2022): 1–9. http://dx.doi.org/10.33544/mjmie.v6i01.187.

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The present study developed a 2D finite element model for simulation of creep-feed grinding process. Fully-coupled mechanical-thermal analysis was used to predict the residual stresses distribution. As in the creep-feed grinding the thermal damages are considerable, so the best and worst cooling condition i.e. flood and dry grindings were studied. Convection heat transfer coefficient was utilized to shows the effect of coolant. The results show the maximum temperature of specimen has reduced by about 52% compared to non-use of coolant. The dominate residual stresses are tensile near the surface that a steep decline in stresses was observed in flood grinding. Also, by using the electro polishing layer removal technique the non-uniform residual stresses were measured to validate the model. The results demonstrated the presented model provides good congruency with the experiments

29

Xia, Yi, Xiu Qing Hao, Liang Li, and Ning He. "Experimental Research on Chemical Mechanical Sharpening of CVD Diamond Micro Tool." Materials Science Forum 836-837 (January 2016): 263–69. http://dx.doi.org/10.4028/www.scientific.net/msf.836-837.263.

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This Research is Focused on the Chemical Mechanical Sharpening of CVD Diamond Micro Tool, which has High Strength and Good Wear Resistance. the Diamond Grinding Wheels were Usually Used for Sharpening, but this Method could Not get High Quality Surface of the Diamond Efficiently and Small Cutting Edge Radius. in Order to Seek a Better Mode for Sharpening, the Copper Based Tungsten Carbide Disc and Abrasive were Used for Grinding. for Better Understanding the Effects of Different Parameters on the Grinding Process and Optimizing them, the Orthogonal Method was Used to Design the Experiments. Grinding Direction, Feed Rate and the Grinding Velocity were Investigated to Obtain Sharper Cutting Edge and Smooth Flank Face. Analysis of Range was Also Introduced to Evaluate the Contribution of each Parameter in Orthogonal Experiment. the Results Showed that down Grinding, Medium Feed Rate and Low Velocity could Achieve a Better Sharpening Result.

30

Kareepadath Santhosh, Deepa, Franci Pušavec, and Peter Krajnik. "Grinding of Cemented Carbide Using a Vitrified Diamond Pin and Lubricated Liquid Carbon Dioxide." Strojniški vestnik - Journal of Mechanical Engineering 69, no. 11-12 (November 21, 2023): 435–43. http://dx.doi.org/10.5545/sv-jme.2023.658.

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Despite extensive research on grinding of cemented carbide, few studies have examined abrasive machining of this material using small-diameter super abrasive tools (also known as grinding pins/points), especially with respect to varying cooling-lubrication methods. This study therefore focuses on a comparative experimental investigation of three such methods - dry, emulsion, and lubricated liquid carbon dioxide (LCO2-MQL). The performance of these methods and the resulting grindability are examined in terms of grinding forces, force ratios, specific energy, and through the analysis of wheel loading. The results show that LCO2-MQL grinding has lower grinding forces (normal forces – 8 % to 145 % lower than dry grinding, and 18 % to 33 % lower than emulsion grinding and tangential forces – 4 % to 66 % lower than dry grinding and 28 % to 78 % lower than emulsion grinding) and specific energy 24 % to 51 % lower compared to dry grinding and 64 % to 69 % lower than emulsion grinding, indicating its potential for efficient material removal. However, a challenge with high wheel loading was observed with LCO2-MQL, likely due to the lack of oxygen in the CO2 grinding atmosphere. Despite this issue, the LCO2-MQL method shows potential for efficient operations, especially at higher aggressiveness values where the lowest specific energies were achieved. These results provide new insights into various aspects of cooling-lubrication methods in the pin grinding of cemented carbides.

31

Saito, Fumio. "Mechanical Activation of Solids by Grinding." Journal of the Society of Powder Technology, Japan 49, no. 3 (2012): 226–31. http://dx.doi.org/10.4164/sptj.49.226.

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32

Gusev, Vladimir. "Comparison study of rotary grindstone mechanical strength." Science intensive technologies in mechanical engineering, no. 3 (March 12, 2022): 18–26. http://dx.doi.org/10.30987/2223-4608-2022-3-18-26.

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The problem of high-strength grinding tool creation is decribed. The possibility of intensifying grinding modes by using prefabricated textured wheels is shown. It is found that high-strength abrasive segments with edge and axial projections should be used, respectively, for narrow and wide prefabricated textured wheels.

33

Dai, Heng Zhen, Zhu Ji Jin, Shang Gao, and Z. C. Tao. "Research on the Chemical-Mechanical Grinding (CMG) Tools for Al₂O₃Ceramic." Advanced Materials Research 325 (August 2011): 270–75. http://dx.doi.org/10.4028/www.scientific.net/amr.325.270.

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Aiming at the severe surface/subsurface damage of Al2O3ceramic ground by diamond grinding wheel, the chemical-mechanical grinding (CMG) tools were studied in this paper. According to the principle of CMG, three types of CMG tools with different abrasives were developed. The chemical compositions of the grinding tools were selected and optimized considering the physicochemical characteristics of Al2O3ceramic. By comparing the surface roughness and material removal rate (MRR) of Al2O3ceramic respectively ground with SiO2 , Fe2O3 and MgO grinding tools, the grinding performance of those grinding tools were evaluated. The experiment results showed that the grinding performance of SiO2 grinding tool was the best. The surface roughness and MRR versus SiO2 grinding tool were all better than other grinding tools, and can reach 28 nm and 15 μm/h respectively. The grinding performance of Fe2O3 grinding tool was the worst.

34

Cao, Ming Li, and Cong Zhang. "Dispersion, Microstructure and Mechanical Properties of Ground Calcium Carbonate Whisker-Reinforced Portland Cement." Applied Mechanics and Materials 174-177 (May 2012): 1398–401. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1398.

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Mechanical grinding method was employed in this study to disperse CaCO3 whiskers in cement matrix. Mechanical properties of the ground whisker reinforced cement were measured. It is shown that the mechanical grinding method was advantageous to the dispersion and mechanical properties of composites. But the grinding process must be proper to assure a certain length and integrality of the whiskers. Crack deflection and whisker pullout mechanisms could account for the strengthening and toughening effects caused by whiskers.

35

NAKAJIMA, Toshikatsu, Shinya TSUKAMOTO, and Norio SUGANO. "Grinding phenomena in very low speed grinding process. Very low speed grinding process. (1st Report)." Journal of the Japan Society for Precision Engineering 56, no. 11 (1990): 2075–80. http://dx.doi.org/10.2493/jjspe.56.2075.

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36

Choi, J., C. W. Lee, and J.-H. Park. "Development of the process model for plunge grinding and optimization of grinding process." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, no. 11 (July 25, 2011): 2628–37. http://dx.doi.org/10.1177/0954406211406201.

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This article presents improved grinding roughness model established for cylindrical plunge grinding though analysing the existing roughness models. The proposed roughness model is to consider the uncertain effects of grinding, such as changes of grinding conditions and circumstance, as grinding procedure is progressed. In order to consider the uncertain effect of grinding, the time delay between programmed and actual infeed rate of grinding table is selected as weighting factor of the proposed roughness model. The developed roughness model is also used for the optimization algorithm of grinding procedure. Optimization algorithm in this study is constructed to minimize the grinding cost and to obtain the optimized dressing and grinding conditions under grinding constraints such as no-burn condition, limitation of roughness of workpiece, grinding power, etc. The optimized results also give an optimized dressing interval in batch production. The used optimization algorithm is an Evolutionary Strategy algorithm, and performance of the proposed algorithm was evaluated with experiments.

37

Majima, K., N. Niimi, S. Katsuyama, H. Nagai, and H. Tomizawa. "Effect of mechanical grinding and mechanical alloying on Sm2Fe17." Journal of Alloys and Compounds 193, no. 1-2 (March 1993): 268–70. http://dx.doi.org/10.1016/0925-8388(93)90367-v.

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38

KOUNOSU, Kenji. "Analysis of intermittent grinding phenomenon in cylindrical traverse grinding." Journal of the Japan Society for Precision Engineering 53, no. 2 (1987): 257–62. http://dx.doi.org/10.2493/jjspe.53.257.

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39

Imai, Kenichiro, and Hiroshi Hashimoto. "Shear-Mode Grinding Based on The Constant Grinding Force." Journal of the Japan Society for Precision Engineering 63, no. 6 (1997): 849–53. http://dx.doi.org/10.2493/jjspe.63.849.

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40

Lin, XH, XL Ke, H. Ye, CL Hu, and YB Guo. "Investigation of surface/subsurface integrity and grinding force in grinding of BK7 glass." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 12 (February 4, 2016): 2349–56. http://dx.doi.org/10.1177/0954406216631575.

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The surface/subsurface integrity and grinding force formed during grinding processes of have been researched on BK7 glass using a surface grinder with diamond grinding wheel. The values of surface roughness, subsurface damage and grinding force were measured and the morphology of surface roughness, and subsurface damage were observed with different grinding parameters. The experimental results show that the values of surface roughness, subsurface damage and grinding force increase with the increasing of feed rate and grinding depth and decreasing of wheel speed. The effects trend of grinding parameters on surface roughness, subsurface damage and grinding force are almost the same and the normal grinding force have great influence on surface roughness and subsurface damage, which agree well with theoretical analysis. These relationships can serve as a useful method for non-destructively predicting subsurface damage depth and a theoretical basis for proposing the appropriate grinding parameters to obtain better surface/subsurface integrity and high efficiency.

41

Huang, Zhi, Shihang Chen, and Hongyan Wang. "Development of three-dimensional dynamic grinding force measurement platform." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 2 (November 17, 2016): 331–40. http://dx.doi.org/10.1177/0954406216680380.

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In order to accurately measure and control high-frequency grinding force in the process of grinding, a novel measurement method of three-dimensional grinding force with mutual perpendicular and independent elastic elements is proposed in this paper. To detect the high frequency grinding force, a resistance strain-type three-dimensional grinding force measurement platform was designed and developed. The key performance indicators of the measurement platform were investigated via finite element simulation. In addition, the detection performance of the measurement platform was researched and verified through natural frequency measurement experiments, static calibration experiments, and grinding experiments. The results show that the proposed method can effectively alleviate the inherent contradiction between natural frequency and sensitivity in the traditional dynamometer; the measurement platform as-established fully meets the performance requirements of three-dimensional dynamic grinding force detection. To this effect, the results discussed here provide technical support for achieving accurate detection of high frequency grinding force, monitoring grinding processes, optimizing grinding parameters, and improving grinding quality.

42

Zhu, Xianglong, Yu Li, Zhigang Dong, Renke Kang, Shang Gao, and Liansheng Li. "Grinding Marks in Back Grinding of Wafer with Outer Rim." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 16 (March 26, 2020): 3195–206. http://dx.doi.org/10.1177/0954406220912787.

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Back Grinding of Wafer with Outer Rim (BGWOR) is a new method for carrier-less thinning of silicon wafers. In this paper, the simulation model of grinding marks of wafer in BGWOR was developed. With the model, the relationship between process parameters, including wheel rotational speed, wafer rotational speed, wheel infeed rate, spark out time and the protruding height of the abrasive grains in the grinding wheel, and grinding marks was discussed. Reasonable grinding parameters to control the grinding marks were also proposed. The model was verified by the experiments of BGWOR. The results showed that: (1) The pattern of the grinding marks of the wafers in BGWOR was depended on the grinding wheel rotational speed, the wafer rotational speed, the wheel infeed rate, the spark out time and the protruding height of the abrasive grains on the grinding wheel; (2) The angle between two adjacent grinding marks changes as the variation of the wheel rotational speed and wafer rotational speed; (3) The grinding marks density can be controlled by selecting the proper ratio of wheel speed to wafer speed. The depth of grinding marks can be reduced by increasing the spark out time and reducing the protruding height of the abrasive grains.

43

Zhao, Guangen, Yongchao Xu, Charles Ming Zheng, Xiao Tian, Chen Lin, QianTing Wang, and Youji Zhan. "Effect of the grinding process on the surface quality of ultrafine cemented carbide with different Co content." Advances in Mechanical Engineering 14, no. 12 (December 2022): 168781322211445. http://dx.doi.org/10.1177/16878132221144591.

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By using a resin bonded diamond grinding wheel, the influence of grinding conditions on processing quality of the ultrafine cemented carbides with different Co content were investigated. Through grinding experiments, the effects of grinding wheel linear speed, feed speed and grinding depth on the surface morphology, roughness, and residual stress of cemented carbides were studied, and the relationship between grinding conditions and machining quality was established. Then, the evaluation and prediction of surface quality according to the grinding parameters can be realized by using ternary regression analysis. Finally, gray relational analysis was applied to optimize the multi-objective concerning surface quality to find the optimal grinding process parameters. The grinding test results show that with the increase of grinding linear speed as well as the decrease of feed speed and grinding depth, the maximum undeformed abrasive particle thickness decreases, which improves the surface plastic removal ratio and reduces the surface roughness. The multi-objective optimization of the grinding process can be achieved by using gray relational analysis, the resulting optimal process parameters achieve the lowest residual stress and surface roughness, which provides a theoretical basis for the prediction and control of the surface quality of cemented carbide in the grinding process.

44

Xiang, Dao Hui, Yu Long Zhang, Guang Bin Yang, Song Liang, Yan Feng Wang, Qiang Qin, and Guo Feng Ma. "Study on Grinding Force of High Volume Fraction SiCp/Al Composites with Rotary Ultrasonic Vibration Grinding." Advanced Materials Research 1027 (October 2014): 48–51. http://dx.doi.org/10.4028/www.scientific.net/amr.1027.48.

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High volume fraction SiCp/Al composites were grinded in rotary ultrasonic vibration aided grinding in this experiment, exploring the effects of different grinding parameters (grinding depth, grinding wheel speed, feed rate) on grinding force and the material removal mechanism with ultrasonic grinding. The results showed that grinding force of ultrasonic grinding is lower than the ordinary grinding in the same grinding parameters. Studying on material removal mechanism of ultrasonic vibration grinding is bound to have important theoretical and practical significance for the improvement of grinding processes and the development of mechanical according to the advantages of grinding and ultrasonic machining. Keywords: High volume fraction SiCp/Al composites; ultrasonic grinding; grinding force

45

Seregin, N. G., and V. I. Zaprudnov. "Mechanical activation method for obtaining cement-ground piles binder." FORESTRY BULLETIN 27, no. 1 (February 2023): 114–20. http://dx.doi.org/10.18698/2542-1468-2023-1-114-120.

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The physicochemical processes of grinding substances by mechanical activation method are considered. The analysis of the processes occurring in solid bodies during their mechanical processing is carried out. The main types of defects arising in the process of mechanical processing of layered silicates are described. For mechanical activation, the most common types of mills are presented, which include disintegrators and planetary mills. The principles of operation of disintegrators and planetary mills are considered in detail. Classification of mills intended for clinker grinding is given. The dependence of the specific energy consumption for clinker grinding and the strength of the samples on the type of mills is analyzed. The dependence of the specific surface of the crushed clinker and the strength of the samples on the speed of the rotor of the impact-reflective mill is investigated. Recommendations on the choice of the type of clinker grinding mills are given.

46

Tu, Lihui, Jianqiang Li, and Weimin Shi. "Investigation on experiment and simulation of the grinding process of cast iron." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 13 (February 18, 2020): 2653–61. http://dx.doi.org/10.1177/0954406220907928.

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Grinding is used to reduce form error and improve the surface quality of workpiece in metal cutting. To investigate the grinding process of cast iron, a series of grinding tests and simulation of cast iron were carried out. At the same time, the finite element method was used to establish a finite element model to simulate the grinding process of cast iron. In the model, the dynamic effects, thermo-mechanical coupling, Johnson–Cook constitutive model, material damage model, and contact model were taken into account. Then, the grinding process of cast iron was simulated using the established finite element model in the ABAQUS software. Material remove, residual stress, grinding force, and cutting temperature were achieved through the simulation. In addition, the effect of the main grinding parameters (depth of grinding and spindle speed) on residual stress, grinding force, and surface quality in the grinding of cast iron was investigated.

47

Ilinykh, Andrey, Alexander Pikalov, and Elena Jurkova. "Innovative solutions for a new technology of high-speed rail grinding." E3S Web of Conferences 471 (2024): 02023. http://dx.doi.org/10.1051/e3sconf/202447102023.

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Ensuring the quality of rail grinding work today is an unsolved problem due to the large influence of the human factor in the design and implementation of rail grinding technological processes. The problem is solved through the development of a set of digital software modules, which are combined into a common control system for the rail grinding process. This system is designed to work as part of a rail grinding train and provide monitoring of the results of operations on mechanical processing of rails and, if necessary, adjustment of grinding modes. The main goals of creating the system are: ensuring the accuracy and quality of mechanical processing of rails by grinding, optimizing the time resource of the technological window provided for grinding rails and forming a database to increase the efficiency of planning work on grinding rails. The presented software package is currently being implemented by STU in the project to create a new rail grinding train PXP 2.0 together with JSC Kaluga Plant Remputmash.

48

Hu, Huiqing. "Grinding of double disc grinding machine." Chinese Journal of Mechanical Engineering (English Edition) 18, no. 01 (2005): 1. http://dx.doi.org/10.3901/cjme.2005.01.001.

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49

TASHIRO, Yoshiaki, Libo ZHOU, Jun SHIMIZU, Noriaki SHINODA, and Yuuki MIKAMI. "Research on Chemo-Mechanical-Grinding (CMG) of Si wafer." Journal of the Japan Society for Precision Engineering 81, no. 10 (2015): 957–62. http://dx.doi.org/10.2493/jjspe.81.957.

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50

Guha, Spandan, Partha Protim Das, and Shankar Chakraborty. "Improvement in the performance with less stiff air layer formation around the rubber tube-pasted grinding wheel." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 15 (April 16, 2019): 5175–89. http://dx.doi.org/10.1177/0954406219844534.

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In the grinding operation, a stiff layer of air gets formed around the periphery of the grinding wheel that causes deterioration of its performance. In the present work, in order to restrict the generation of stiff air layer around the periphery of the grinding wheel, a rubber tube is pasted on its surface to improve the grinding performance. An experimental investigation is carried out with low alloy steel as the work material. Taguchi's L9 orthogonal array is considered for the design of experiments while taking cutting speed, depth of cut, and type of the cutting fluid as the input grinding parameters. A comparative analysis using rubber tube-pasted grinding wheel and normal grinding wheel reveals that the developed wheel significantly improves the grinding performance with respect to surface roughness, amplitude of vibration and grinding ratio, as compared to the normal wheel. Moreover, grey relational analysis aided with fuzzy logic is applied in the experimental results to derive the optimal combination of process parameters for further enhancement of the grinding performance. Finally, analysis of variance results identify cutting speed as the most significant parameter while grinding with normal wheel, whereas depth of cut appears to be the most important parameter while machining with rubber tube-pasted grinding wheel.

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