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Journal articles on the topic 'Dieless drawing process'

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Author: Grafiati

Published: 10 December 2022

Last updated: 29 January 2023

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1

Furushima, Tsuyoshi, Yuta Noda, and Kenichi Manabe. "Laser Dieless Drawing Process for Metal Micro-Tubes." Key Engineering Materials 443 (June 2010): 699–704. http://dx.doi.org/10.4028/www.scientific.net/kem.443.699.

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A drawing process using tools such as dies, plugs and mandrels has been conventionally applied as a means of miniaturizing tubes. However, it is not easy to scale down the conventional process to micro sizes for many reasons related to the tools used in the process. It is difficult to fabricate micro tools with high accuracy, and to insert a plug or a mandrel into a fine tube. Thus, the development of new drawing technologies for the fabrication of micro-tubes without the need for tools such as dies, plugs and mandrels is necessary. A laser dieless drawing technique with local heating using a laser as the heating source has been focused on for the fabrication of micro-tubes. In this study, a dieless drawing with a semiconductor laser setup is designed and developed. A tube of stainless steel, SUS304, with an outer diameter of 0.52mm and thickness of 0.1mm is used in the experiments. A laser dieless drawing experiment is carried out to investigate the effect of the laser power and drawing speed on the drawing limit. Finally, the effectiveness of laser dieless drawing process is discussed.

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2

Xia, Hong Yan, Zhan Jun Qi, and Di Wu. "A New Forming Method of Tapered Wire-Pole with Square Cross-Section." Applied Mechanics and Materials 373-375 (August 2013): 2004–7. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.2004.

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It is difficult to give shapes for tapered wire-pole with square cross-section in conventional plastic working process. A new dieless drawing method for making wire-pole has been developed. Through the dieless drawing theoretical study and experimental analysis of the wire-pole, a new wire-pole dieless drawing process is developed. The methods to ascertain key technique parameter are given out and the drawing velocity model is established. The experimental study shows that the dieless drawing technique is reasonable novel, the equipment is simple and one dieless drawing production procedure can replaces complete forming procedure in the general for tapered wire-pole dieless forming, which completes the deformation heat treatment, enhances the product’s overall performance simultaneously and has the practical value.

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3

Xia, Hong Yan, Qing Bian, and Di Wu. "Study on Mathematical Model of Dieless Drawing Speed Control for Variable Section Pipes." Applied Mechanics and Materials 373-375 (August 2013): 2034–37. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.2034.

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Dieless drawing, as a flexible metal forming method, could form pipes with arbitrary variable section. In order to control the shape and dimensions accurately, based on the analysis of deformation mechanism of arbitrary variable section pipes via dieless drawing process, the calculation method of dieless drawing speed during pipe forming is proposed theoretically,Furthermore, mathematical model of dieless drawing speed control is established by using piecewise polynomial to approach continuous speed curve. The study provide the basis for the dieless drawing speed microcomputer control system. The results of experimental investigation showed that the mathematical model indicates variation of dieless drawing speed quite well, and it is available to schedule the speeds for arbitrary variable section pipes dieless drawing.

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4

Li, Kaisong, Zhangke Wang, and Xuefeng Liu. "Study of Deformation Stability during Semi-Dieless Drawing of Ti-6Al-4V Alloy Wire." Materials 12, no. 8 (April 23, 2019): 1320. http://dx.doi.org/10.3390/ma12081320.

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A semi-dieless drawing technology has the advantages of producing a large deformation in a single pass and achieving high-precision dimensions of the finished products. However, instabilities can easily occur in a technique with a large amount of deformation, resulting in its failure. Herein, the deformation behavior of a wire during semi-dieless drawing is studied by finite element simulations. The instability mechanism of the semi-dieless drawing is proposed and validated by experiments. The experiments are conducted under the following conditions: a heating temperature of 950 °C; a distance between the die and heating coil of 20 mm; a feeding speed of 0.25 mm/s; a drawing speed range of 0.38–0.53 mm/s, and a die diameter range of 1.8–2.4 mm. The results show that by increasing the drawing speed or decreasing die diameter, the diameter fluctuation of the dieless drawn wire increases, and the semi-dieless drawing process easily becomes unstable. The diameter of the entering wire shows a fluctuating increasing trend owing to the variation in the drawing speed, which results in the instability during the semi-dieless drawing. The validity of the finite element model is verified by comparing the numerically predicted value and experimentally measured value of the drawn wire diameter.

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5

Furushima, Tsuyoshi, and Ken-Ichi Manabe. "Heat Assisted Dieless Drawing Process of Superplastic Metal Microtubes - From Zn22Al to β Titanium Alloys." Materials Science Forum 838-839 (January 2016): 459–67. http://dx.doi.org/10.4028/www.scientific.net/msf.838-839.459.

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A heat assisted superplastic dieless drawing process that requires no dies or tools is applied to the drawing of a Zn-22Al and β titanium superplastic alloy for not only circular but also noncircular microtubes such as square, rectangular and noncircular multi core tubes having square inner and rectangular outer cross sections. As a result, the tendency has been to increase the limiting reduction in area with increasing strain rate sensitivity index m value. We successfully fabricate Zn-22Al alloy, AZ31 magnesium, β titanium circular microtubes with outer diameter of 191μm, 890μm and 180μm, respectively. Furthermore, a noncircular micro tube, which has inner square tubes with a 335μm side, and an outer rectangular tube of 533×923μm were fabricated successfully. During the dieless drawing process, the geometrical similarity law in cross section which the tube is drawn while maintaining its initial shape can be satisfied. The smooth surface can be obtained in case of superplastic dieless drawing process without contact situation with dies and tools. Consequently, it is found that the superplastic dieless drawing is effective for the fabrication of circular and noncircular multicore microtubes.

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6

Hwang, Yeong-Maw, Zong Sian Li, and Tsu Yu Lin. "Formability Discussion in Dieless Drawing of Stainless Steel Tubes." Key Engineering Materials 626 (August 2014): 10–15. http://dx.doi.org/10.4028/www.scientific.net/kem.626.10.

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Stainless steel tubes are widely used in various fields, such as electrode tubes, probe tubes, electronic parts, painless injection needles, and micro-nozzles etc. In this study, a self-developed prototype dieless drawing machine is used to explore the formability of the dieless drawing process of SUS304 stainless steel tubes. The critical process parameters of the forming temperature, drawing velocity, the drawing accelerations and area reduction are investigated. A commercial finite element code of DEFORM 3D is used to simulate the temperature, stress, strain distributions and drawing velocity limit in the dieless drawing process of the stainless steel tubes. The maximum area reduction obtained can reach 50% and the better forming temperatures are between 1000°C and 1100 °C.

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7

Furushima, Tsuyoshi, Yutaro Hirose, Kazuo Tada, and Ken-Ichi Manabe. "Development of Superplastic Dieless Drawing Apparatus for 3Y-TZP Zirconia Ceramic Tube." Materials Science Forum 838-839 (January 2016): 597–602. http://dx.doi.org/10.4028/www.scientific.net/msf.838-839.597.

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A novel superplastic dieless drawing technique with local heating and tensile deformation has been focused on for fabrication of zirconia ceramic tube. In this study, 3Y-TZP zirconia ceramic tube with outer diameter of 6mm and inner diameter of 4mm as a superplastic material is used experimentally. An apparatus of superplastic dieless drawing with rotary stage for circumferential uniform heating and acetylene burner for high temperature of 1700°C is developed. The superplastiac dieless drawing experiment is carried out to investigate the effect of the ratio of drawing speed to feeding speed on the flexible controllability of diameter after drawing process. As a result, the reduction in area after drawing process can be controlled by the ratio of drawing speed to feeding speed. In addition, a maximum reduction in area of 79.2% can be realized in this process. Consequently, the validity of developed apparatus of superplastic dieless drawing for Zirconia ceramic tube can be demonstrated.

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8

Milenin, Andrij, Dorota Byrska-Wójcik, and Mirosław Wróbel. "Physical Modelling of Strain Induced Roughness of Copper Wire during Dieless Drawing Process." Materials Science Forum 1016 (January 2021): 900–905. http://dx.doi.org/10.4028/www.scientific.net/msf.1016.900.

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One of the possibilities of the dieless drawing is the production of ultrafine wire. In this case, it is possible for additionally stretch the wire, obtained in the conventional way. This may allow to obtain a wire of smaller diameter than the industry produces. However, the significant problem is the increase of the strain induced roughness of wire during dieless drawing. This problem has become important due to the fact that the resulting roughness can be comparable to the diameter of the wire and significantly reduce the workability. Thus, the solution of these problems requires plastometric studies of the material, physical and numerical modeling for prediction the roughness of the wire under conditions of dieless drawing. The experimental study shown, that the surface roughness of the copper wire after dieless drawing increases significantly at a deformation temperature above 300°C. The total roughness is associated both with the formation of oxides and the strain induced roughness.

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9

Tiernan, P., and M. T. Hillery. "Experimental and numerical analysis of the deformation in mild steel wire during dieless drawing." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 216, no. 3 (July 1, 2002): 167–78. http://dx.doi.org/10.1177/146442070221600302.

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Dieless wire drawing is the process of causing a reduction in a wire diameter without the use of conventional wire drawing dies. The wire, axially loaded with a force, is heated to an elevated temperature to initiate plastic deformation. The mechanics of this novel drawing process and a theoretical analysis of the deformation are discussed in this paper. The results of an experimental drawing programme carried out with mild steel wire at temperatures between 400 and 900°C are also presented. Mathematical models were developed and used to describe and predict the process deformation and both the stress and temperature distribution profile along the workpiece. A machine was designed and manufactured to facilitate an experimental programme of dieless drawing. The machine permitted continuous drawing of wire, while the reduction ratio, drawing load and temperature were automatically controlled using a personal computer. A finite element (FE) model of the wire was developed, and the results obtained from the FE analysis show good agreement with those obtained from both the experimental work and the mathematical modelling. Results obtained confirm that a complicated interdependence of the process parameters exists during the dieless drawing process.

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10

Milenin, Andrij, Mirosław Wróbel, Piotr Kustra, and Jiří Němeček. "Experimental and Numerical Study of Surface Roughness of Thin Brass Wire Processed by Different Dieless Drawing Processes." Materials 15, no. 1 (December 21, 2021): 35. http://dx.doi.org/10.3390/ma15010035.

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This paper examines the surface roughness of a thin brass wire (140–200 microns in diameter) after two dieless drawing (DD) processes, i.e., conventional dieless drawing (CDD) and incremental dieless drawing (IDD). In incremental dieless drawing, small increments in deformation were applied in several passes. It has been proven that the IDD process not only has a greater efficiency but also enables obtaining a wire with significantly lower surface roughness. The explanation for these effects is based on the results of the numerical modeling of both compared processes. The developed numerical model takes into consideration the initial roughness of the wire surface, shape and dimensions of grains, and their diversified mechanical properties. Nanoindentation measurements, microstructure, and plastometric studies allowed us to find the effective flow stress distribution in the grains. The IDD process was found to be much more stable and develop a much more uniform distribution of grain strain than the CDD process. More homogeneous deformation results in surface roughness reduction. Approximately 25–30% reduction in surface roughness of the wire produced by the IDD process was predicted by simulations and confirmed experimentally.

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11

Liu, Xue Feng, Ye Zhang, Fang Qin, Hao En Mao, and Jian Xin Xie. "Research on Dieless Drawing Process of Stainless Steel Tapered Tube." Materials Science Forum 749 (March 2013): 82–87. http://dx.doi.org/10.4028/www.scientific.net/msf.749.82.

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The traditional forming technologies of stainless steel tapered tube have some disadvantages, such as its complicated processes, few product specification, low production efficiency and high production cost. Dieless drawing is a new kind of near net-shaping process for fabricating tapered metallic tubes with large deformation per pass, high yield ratio of material and flexible production. Dieless drawing of stainless steel tapered tube was studied systematically in order to establish both temperature field model with respect to the changes of boundary condition and metal flow velocity during deformation, and a drawing speed controlling model with respect to the volume change of deformation zone. The models were verified by experiments in the present investigation. Finally, a continuous pickling process with variable-speed was proposed for tapered metallic tube, which was successfully applied to surface oxidation film removal of the stainless steel tapered tube.

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12

Furushima, Tsuyoshi, Ken-ichi Manabe, and Takashi Sakai. "Fabrication of Superplastic Microtubes Using Dieless Drawing Process." MATERIALS TRANSACTIONS 49, no. 6 (2008): 1365–71. http://dx.doi.org/10.2320/matertrans.p-mra2008810.

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13

FURUSHIMA, Tsuyoshi, Ken-ichi MANABE, and Takashi SAKAI. "Fabrication of Superplastic Microtubes Using Dieless Drawing Process." Journal of the Japan Society for Technology of Plasticity 47, no. 548 (2006): 870–74. http://dx.doi.org/10.9773/sosei.47.870.

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14

Furushima, Tsuyoshi, Tetsuhide Shimizu, and Kenichi Manabe. "Grain Refinement by Combined ECAE/Extrusion and Dieless Drawing Processes for AZ31 Magnesium Alloy Tubes." Materials Science Forum 654-656 (June 2010): 735–38. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.735.

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Grain refinement processing by severe deformation, combined equal-channel angular extrusion (ECAE) processing and conventional tube extrusion, is applied to AZ31 magnesium alloy. By a combination of ECAE processing and tube extrusion, a fabricated tube, with outer and inner diameters of 2 mm and 1 mm, respectively, has fine, homogeneous, and equiaxed grain structure with an average grain size of 1.5m. Tensile test results indicate that the fine-grained tubes exhibited a superplasticity potential m value of 0.55.The maximum elongation (688%) is obtained at a temperature of 673K. Furthermore, the tubes fabricated by combined ECAE/extrusion process is applied to dieless drawing process without using any tool and die.As a result, dieless drawing limit is enhanced due to high m value achieved by combined ECAE/Extrusion process. From these results, the effectiveness of new grain refinement processing for fabricating fine-grained tubes and its application for dieless drawing process to fabricate the fine tubes was demonstrated experimentally.

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15

Wang, Hui Feng, Jing Tao Han, Jing Liu, and Yong Jun Zhang. "Primary Study of Dieless Drawing Process for Bimetal Tube." Advanced Materials Research 538-541 (June 2012): 1272–76. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1272.

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At present, bimetal tube has been used wildly in industry and there are many methods for preparation these kinds of tubes. In consideration of deficiencies of available methods, a new technique of bimetal tube preparation was presented in this paper. With appropriate design and manufacture of facility and design of experiment, copper clad steel tube was prepared. Feasibility and practicability of this process was verified by conclusion of research. At last, the following study was discussed.

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16

Furushima, T., and K. Manabe. "A novel superplastic dieless drawing process of ceramic tubes." CIRP Annals 66, no. 1 (2017): 265–68. http://dx.doi.org/10.1016/j.cirp.2017.04.118.

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17

Fann, Kuang-Jau, Chia Feng Yu, and Chun Hao Chang. "Analysis of Dieless Drawing to Form the End of Metal Wires under Proportional Shape Evolution with Slab Method." Materials Science Forum 920 (April 2018): 155–60. http://dx.doi.org/10.4028/www.scientific.net/msf.920.155.

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This study is to set a goal to create a model solving the temperature distribution and its evolution for the process of dieless drawing metal wire parts by using slab method and postulating that the wire end suffers a proportional deformation. The results from using a SUS304 stainless wire in 5 mm diameter dielessly drawn show that the highest temperature locates on the symmetry plane at the process beginning, so that the necking takes place there and an end will be formed securely. As a result, the method proposed by this study is feasible. In addition, for a given final shape of the metal wire end, there are many possibilities to get different temperature distribution and its evolution by setting different temperature boundary condition. The higher the boundary temperature set, the higher the temperature distribution, but the lower the drawing force needed.

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18

Milenin, Andrij, Tsuyoshi Furushima, and Jiří Němeček. "Transformation of Surface Roughness of Mg Alloy Tubes During Laser Dieless Drawing." Journal of Materials Engineering and Performance 29, no. 11 (November 2020): 7736–43. http://dx.doi.org/10.1007/s11665-020-05234-6.

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AbstractThe paper investigates the transformation of surface roughness of tubes made from magnesium and magnesium alloys as a function of their longitudinal strain during laser dieless drawing. Experimental studies on three materials (AZ31, MgCa08, and pure Mg) have shown that the dependence of roughness on the longitudinal strain is nonlinear and exhibits a minimum. The proposed explanation for this is that the transformation of surface roughness occurs following two mechanisms. The first mechanism involves stretching of the tube and the decreasing of existing roughness with the increasing elongation. The second mechanism is based on the strain-induced surface roughening phenomenon. This mechanism leads to an increase in roughness with the increasing elongation. To analyze these mechanisms, a numerical model of roughness formation is used. It is experimentally shown that the position of the minimum roughness concerning the tube longitudinal strain is correlated with the stress-strain curve of the material under laser dieless drawing conditions. The obtained results provide a practical way to reduce surface roughness of tubes produced by the laser dieless drawing process. According to the proposed method, to achieve minimum roughness, it is necessary to keep the longitudinal strain under a specific value. This value is close to the strain, which corresponds to the maximum stress on the stress-strain curve of the material for temperature and strain rate, corresponding laser dieless drawing conditions.

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19

Furushima, Tsuyoshi. "Fabrication of Metal Micro-tubes Using Superplastic Dieless Drawing Process." Materia Japan 49, no. 1 (2010): 13–16. http://dx.doi.org/10.2320/materia.49.13.

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20

FURUSHIMA, Tsuyoshi, and Ken-ichi MANABE. "2230 Surface Roughness on Superplastic Microtubes in Dieless Drawing Process." Proceedings of the JSME annual meeting 2005.1 (2005): 623–24. http://dx.doi.org/10.1299/jsmemecjo.2005.1.0_623.

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21

Furushima, Tsuyoshi, Atsushi Shirasaki, and Ken-ichi Manabe. "Fabrication of noncircular multicore microtubes by superplastic dieless drawing process." Journal of Materials Processing Technology 214, no. 1 (January 2014): 29–35. http://dx.doi.org/10.1016/j.jmatprotec.2013.07.005.

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22

FURUSHIMA, Tsuyoshi, and Ken-ichi MANABE. "Fabrication of AZ31 Magnesium Alloy Fine Tubes by Dieless Drawing Process." Journal of the Japan Society for Technology of Plasticity 51, no. 597 (2010): 990–92. http://dx.doi.org/10.9773/sosei.51.990.

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23

Furushima, Tsuyoshi, Yusuke Imagawa, Shusaku Furusawa, and Ken-ichi Manabe. "Deformation Profile in Rotary Laser Dieless Drawing Process for Metal Microtubes." Procedia Engineering 81 (2014): 700–705. http://dx.doi.org/10.1016/j.proeng.2014.10.063.

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24

FURUSHIMA, Tsuyoshi, Syuhei HIROSE, and Ken-ichi MANABE. "Effective Temperature Distribution and Drawing Speed Control for Stable Dieless Drawing Process of Metal Tubes." Journal of Solid Mechanics and Materials Engineering 3, no. 2 (2009): 236–46. http://dx.doi.org/10.1299/jmmp.3.236.

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25

MILENIN, Andrij, Piotr KUSTRA, Miroslaw WRÓBEL, Marek PACKO, and Valeriy PIDVYSOTS’KYY. "DIELESS DRAWING PROCESS FOR ELONGATION OF THIN COPPER AND COPPER ALLOY WIRE." Journal of Metallic Materials 71, no. 3 (November 2019): 12–15. http://dx.doi.org/10.32730/imz.2657-747.19.3.3.

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26

FURUSHIMA, Tsuyoshi, Shusaku FURUSAWA, Kei TSUSHIMA, Yusuke IMAGAWA, and Ken-ichi MANABE. "20304 Fabrication of Metal Micro Tubes Using Multi-pass Dieless Drawing Process." Proceedings of Conference of Kanto Branch 2013.19 (2013): 261–62. http://dx.doi.org/10.1299/jsmekanto.2013.19.261.

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27

POP, MARIANA, TRAIAN CANTA, and AUREL POP. "THE INFLUENCE OF HEAT TRANSFER ON PHYSICAL AND MECHANICAL PROPERTIES IN NONCONVENTIONAL PROCESSES OF METALLIC SOLIDS PLASTIC DEFORMATION." Modern Physics Letters B 16, no. 04 (February 20, 2002): 135–41. http://dx.doi.org/10.1142/s0217984902003592.

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The aim of this paper is to present a mathematical model for the steady state of the dieless drawing process. With this model, it is possible to study the influence of various process parameters, such as temperature, strain, strain rate and stress. The paper also presents some elements of the process control for producing variable cross-sections (cone-contour and sinus-contour).

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28

FURUSHIMA, Tsuyoshi. "Fundamental Study on Dieless Tube Drawing Process and Its Application for Micro Forming." Journal of the Japan Society for Technology of Plasticity 52, no. 611 (2011): 1308–9. http://dx.doi.org/10.9773/sosei.52.1308.

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29

Tiernan, P., and P. Comerford. "Determining the Suitability of Low Carbon Steel Wire for the Dieless Drawing Process." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 221, no. 2 (February 2007): 267–75. http://dx.doi.org/10.1243/09544054jem520.

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30

Kustra, Piotr, Andrij Milenin, Bartłomiej Płonka, and Tsuyoshi Furushima. "Production Process of Biocompatible Magnesium Alloy Tubes Using Extrusion and Dieless Drawing Processes." Journal of Materials Engineering and Performance 25, no. 6 (May 10, 2016): 2528–35. http://dx.doi.org/10.1007/s11665-016-2090-8.

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31

Memon, A. H., G. R. Symmons, R. Crampton, and M. S. J. Hashmi. "An Experimental Study of a Plasto-Hydrodynamic Strip Drawing Process." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 203, no. 1 (February 1989): 57–65. http://dx.doi.org/10.1243/pime_proc_1989_203_188_02.

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Experimental results are presented for a new dieless strip drawing process in which conventional wedge-shaped dies have been replaced by a reduction unit having a stepped rectangular cavity. The smallest cavity dimensions are larger than those of the incoming strip, thus eliminating the problem of die friction and consequential tool wear. In this novel process, the strip is passed through a chamber filled with polymer melt and then pulled through the reduction unit. The strip material is deformed due to the combined effects of shear drag and the hydrodynamic pressure generated by the converging flow of the polymer melt. Experiments were carried out in which the process parameters such as the unit geometry, speed and polymer melt temperature and hence viscosity were varied and the hydrodynamic pressure, reduction in strip size and drawing load were measured. Initial experiments were carried out by using copper strip and low-density polyethylene at two different melt temperatures. Results from experiments showed that a reduction in area of strip of more than 10 per cent could be achieved in a single pass. The Newtonian analysis presented by the authors in reference (9) is modified to incorporate the critical shear stress limit of the polymer melt and the non-linear strain-hardening property of the strip material.

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32

Furushima, Tsuyoshi, Yusuke Imagawa, Ken-ichi Manabe, and Takashi Sakai. "Effects of oxidation and surface roughening on drawing limit in dieless drawing process of SUS304 stainless steel microtubes." Journal of Materials Processing Technology 223 (September 2015): 186–92. http://dx.doi.org/10.1016/j.jmatprotec.2015.03.033.

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33

FURUSHIMA, Tsuyoshi, and Ken-ichi MANABE. "Dieless drawing process of extruded non-circular aluminum alloy tubes with double hollow section." Journal of Japan Institute of Light Metals 57, no. 8 (2007): 351–56. http://dx.doi.org/10.2464/jilm.57.351.

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34

Supriadi, Sugeng, Tsuyoshi Furushima, and Ken-ichi Manabe. "Real-Time Process Control System of Dieless Tube Drawing with an Image Processing Approach." MATERIALS TRANSACTIONS 53, no. 5 (2012): 862–69. http://dx.doi.org/10.2320/matertrans.mf201118.

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35

Milenin, Andrij, Piotr Kustra, Dorota Byrska-Wójcik, and Tsuyoshi Furushima. "Physical and Numerical Modelling of Laser Dieless Drawing Process of Tubes from Magnesium Alloy." Procedia Engineering 207 (2017): 2352–57. http://dx.doi.org/10.1016/j.proeng.2017.10.1007.

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36

Supriadi, S., and K. Manabe. "Enhancement of dimensional accuracy of dieless tube-drawing process with vision-based fuzzy control." Journal of Materials Processing Technology 213, no. 6 (June 2013): 905–12. http://dx.doi.org/10.1016/j.jmatprotec.2012.12.011.

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37

Furushima, T., and K. Manabe. "Experimental and numerical study on deformation behavior in dieless drawing process of superplastic microtubes." Journal of Materials Processing Technology 191, no. 1-3 (August 2007): 59–63. http://dx.doi.org/10.1016/j.jmatprotec.2007.03.084.

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38

Huh, You, Bo Keun Ha, and Jong Sung Kim. "Dieless drawing steel wires using a dielectric heating method and modeling the process dynamics." Journal of Materials Processing Technology 210, no. 13 (October 2010): 1702–8. http://dx.doi.org/10.1016/j.jmatprotec.2010.05.020.

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39

Qin, Fang, Xue-Feng Liu, and Hao-En Mao. "The Thickness Distribution of Oxidation Film on Tapered Pipe Surface in Dieless Drawing." International Journal of Corrosion 2011 (2011): 1–5. http://dx.doi.org/10.1155/2011/615197.

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The thickness distribution of oxidation film on the surface of AISI304 stainless steel tapered pipe, its influence factors, and the effect of metal matrix deformation on oxidation behavior during dieless drawing were studied in this paper. The results showed that oxidation rate was affected strongly by induction heating temperature and deformation degree. The thickness distribution of oxidation film was uneven and increased from the larger diameter end to the smaller diameter end along the axial direction of tapered pipe. When induction heating temperature raised or the distance between heat and cold sources was increased, or feed speed was decreased, oxidation rate was accelerated and oxidation film on the tapered pipe surface thickened significantly, due to massive cracks in oxidation film induced by deformation of metal matrix. The density and width of cracks in oxidation film were enlarged, and the thickness of oxidation film increased with the increase in deformation degree.

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40

Jäger, Aleš, Karel Tesař, Jiří Němeček, Andrij Milenin, and Jiří Němeček. "Microstructure and Micromechanical Properties of Mg Microtubes Prepared by Laser Dieless Drawing." Key Engineering Materials 784 (October 2018): 21–26. http://dx.doi.org/10.4028/www.scientific.net/kem.784.21.

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The paper presents microscale experimental investigation performed on microtubes that were prepared with a novel laser dieless drawing (LDD) technique from difficult-to-work AZ31 magnesium alloy (nominally 3wt.%Al-1wt.%Zn-0.3wt.%Mn-Mg balanced). A microstructure analysis was performed via various microscopic techniques. Mechanical response of individual grains with various orientations was tested using instrumental nanoindentation and the results were compared with the microstructure. Distributions of elastic modulus, hardness and visco-elastic properties were analyzed. In addition, microtubes were also characterized in terms of their surface roughness and morphology based on different modes of surface treatment. The grain size is practically not changed when LDD is applied after extrusion showing low thermal and straining effect of the process. Local mapping of mechanical properties does not show weak spots and imply feasibility of the novel production technology.

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41

Furushima, Tsuyoshi, Takuma Ikeda, and Kenichi Manabe. "Deformation and Heat Transfer Analysis for High Speed Dieless Drawing of AZ31 Magnesium Alloy Tubes." Advanced Materials Research 418-420 (December 2011): 1036–39. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1036.

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The effect of drawing speed and heating length on deformation behavior was investigated by numerical approach for AZ31 magnesium alloy tubes to realize high speed dieless drawing process. The length of deformation zone expands with increasing the feeding speed. The increase in heating length leads to expanding length of deformation zone. The mean strain rate increases with increasing the feeding speed firstly, and then rate of increase in the strain rate becomes gradual under condition of any length of heating band. Based on these results, a limiting reduction in area of 52.5% under higher speed and larger heating length conditions can be realized experimentally.

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Milenin, Andrij, Piotr Kustra, Tsuyoshi Furushima, Peihua Du, and Jiří Němeček. "Design of the laser dieless drawing process of tubes from magnesium alloy using FEM model." Journal of Materials Processing Technology 262 (December 2018): 65–74. http://dx.doi.org/10.1016/j.jmatprotec.2018.06.018.

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Furushima, T., and K. Manabe. "Experimental study on multi-pass dieless drawing process of superplastic Zn–22%Al alloy microtubes." Journal of Materials Processing Technology 187-188 (June 2007): 236–40. http://dx.doi.org/10.1016/j.jmatprotec.2006.11.204.

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WANG, Zhen, Xuefeng LIU, and Jianxin XIE. "MICROSTRUCTURE AND MECHANICAL PROPERTIES EVOLUTIONS OF CONTINUOUS COLUMNAR--GRAINED CuAlNi ALLOY WIRES DURING DIELESS DRAWING PROCESS." ACTA METALLURGICA SINICA 48, no. 7 (February 28, 2013): 867–74. http://dx.doi.org/10.3724/sp.j.1037.2012.00187.

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Hongyu, Wang, Ji Shijun, Zhao Dewen, and Zhang Dianhua. "Analysis and study of dieless drawing process for rod based on radial direction gradient slab method." International Journal of Advanced Manufacturing Technology 98, no. 1-4 (June 15, 2018): 839–47. http://dx.doi.org/10.1007/s00170-018-2282-5.

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46

Liu, XueFeng, YuHui Wu, and JianXin Xie. "Deformation behavior of Cu-12wt%Al alloy wires with continuous columnar crystals in dieless drawing process." Science in China Series E: Technological Sciences 52, no. 8 (July 1, 2009): 2232–36. http://dx.doi.org/10.1007/s11431-009-0236-8.

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Parvinmehr, H., G. R. Symmons, and M. S. J. Hashmi. "A non-Newtonian plasto-hydrodynamic analysis of dieless wire-drawing process using a stepped bore unit." International Journal of Mechanical Sciences 29, no. 4 (January 1987): 239–57. http://dx.doi.org/10.1016/0020-7403(87)90038-5.

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FURUSHIMA, Tsuyoshi, Yusuke IMAGAWA, Shusaku FURUSAWA, Ken-ichi MANABE, and Takashi SAKAI. "922 Effect of Tube Surface Quality on Deformation Behavior in Dieless Drawing Process for Metal Microtubes." Proceedings of the Materials and processing conference 2012.20 (2012): _922–1_—_922–5_. http://dx.doi.org/10.1299/jsmemp.2012.20._922-1_.

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FURUSHIMA, Tsuyoshi, Shusaku FURUSAWA, and Ken-ichi MANABE. "10512 Effects of Surface Profile Smoothing in Laser Multi-pass Dieless Drawing Process of Stainless Steel Microtube." Proceedings of Conference of Kanto Branch 2015.21 (2015): _10512–1_—_10512–2_. http://dx.doi.org/10.1299/jsmekanto.2015.21._10512-1_.

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Lepš, Matěj, Eliška Janouchová, Aleš Jäger, Jiří Němeček, and Andrij Milenin. "Optimization of production process of Mg tubes produced with laser dieless drawing method and related microstructural analysis." Procedia Manufacturing 15 (2018): 311–19. http://dx.doi.org/10.1016/j.promfg.2018.07.224.

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