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Velocity Field and Variation of Wall Thickness During Tube Dieless Upsetting 被引量:1

Velocity Field and Variation of Wall Thickness During Tube Dieless Upsetting
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摘要 Theoretical analyses show that the variation of wall thickness is in direct proportion to outer-diameter, inter-diameter, and (1+R_s)^(1/2) (Rs is sectional increase ratio of tube), the theoretical calculated results of wall thickness during tube dieless upsetting are very approximate to the experimental one. As the width of deformation field increases, both the variation of wall thickness and the derivative of wall thickness variation to width of deformation field (to/tf) reduce. Theoretical analyses show that the variation of wall thickness is in direct proportion to outer-diameter, inter-diameter, and (√1 + Rs) (Rs is sectional increase ratio of tube), the theoretical calculated results of wall thickness during tube dieless upsetting are very approximate to the experimental one. As the width of deformation field increases, both the variation of wall thickness and the derivative of wall thickness variation to width of deformation field (tf/to) reduce.
出处 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2004年第2期218-222,共5页 哈尔滨工业大学学报(英文版)
基金 Sponsored by Ministry of Education of China and Natural Science Foundation of Liaoning Province
关键词 dieless upsetting TUBE wall thickness velocity field 无模锻压 墙体厚度 速率场 管道 柔性金属制造技术
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参考文献5

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  • 2SEKIGUCHI H,KOBATAKE K.Development of dieless upsetting process[].Proc nd International Conference on Technology of Plasticity (ICTP).1987
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同被引文献5

  • 1Sekiguchi H, Kobatake K. Development of dieless drawing process[J]. Advanced Technology of Plasticity, 1987, Proc. 2nd ICTP(1987): 347-349.
  • 2Avitzur B. Metal Forming: Processes and Analysis, 1979.
  • 3Yamada Y. Applications of dieless drawing to Ni-Ti wire and tapered steel wire manufacture[J]. Kobe Res Dev Apr, 1992, 42(2): 93-96. In Japanese.
  • 4Wang Z T, Zhang S H, Luan G F, Bai G R. Experiment study on variation of wall thickness during dieless drawing of stainless steel tube[J]. Journal of Materials Processing Technology, 2002, 120(1-3): 90-93.
  • 5王忠堂,李国辉,郑杰,栾瑰馥.钨合金棒材无模流变成形有限元分析[J].金属成形工艺,2002,20(2):14-16. 被引量:1

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