Transactions of Materials and Heat Treatment

Title：Study of terminal cold extrusion process without mandrel craft and mold design

Authors： WANG Da-yong~(1) TIAN Xiao-fei~(2)(1.School of Materials Science and Engineering Dalian Jiaotong University Dalian Liaoning 116028 China 2.Dalian Locomotive and Rolling Stock Works Dalian Liaonmg 116021 Chian)

Unit：

KeyWords： cold extrusion without mandrel forming process mould structure part defect terminal

ClassificationCode：TG376

year,vol(issue):pagenumber：2006,31(5):107-109

Abstract：

The cold extrusion process without mandrel craft is introduced through the process analysis of the terminal in this paper.The selection and calculation of process parameters,die design and quality control are studied.The compound mold structure with a guide to assure the center of the part and down mold hole are developed.Feasible measures are adopted to solve the quality problems in the experiment.The practice results show that it simplifies the equipment and operating process,saves materials,improves the finished precision of the parts,production rate,surface quality and mechanical properties.The benefits of economic and social are gained.The application of cold extrusion process for the terminal has a reference value to the similar parts.

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Reference：

[1]王孝培.冲压手册[M].北京:机械工业出版社,1991.
[2]吴诗?.冷温挤压技术[M].北京:国防工业出版社,1995.
[3]黎文峰.厚壁管件开式冷挤压成型的试验研究[J].锻压装备与制造技术,2004,(4):55 57.

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