錐形管連續無模拉拔速度控制模型的理論與實驗分析

毛浩恩; 劉雪峰; 秦芳; 何勇; 謝建新

doi:10.13374/j.issn1001-053x.2010.05.009

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錐形管連續無模拉拔速度控制模型的理論與實驗分析

doi: 10.13374/j.issn1001-053x.2010.05.009

1. 北京科技大學新金屬材料國家重點實驗室, 北京 100083;
2. 河北科技大學材料科學與工程學院, 石家莊 050018

基金項目:

國家自然科學基金重點資助項目(No.50634010,No.50674008)

詳細信息

作者簡介:
毛浩恩(1975-),女,博士研究生,E-mail:maohaoen@163.com;謝建新(1958-),男,教授,博士生導師

中圖分類號: TG356.5
計量
- 文章訪問數: 247
- HTML全文瀏覽量: 108
- PDF下載量: 4
- 被引次數: 0
出版歷程
- 收稿日期: 2009-10-23

Theoretical and experimental analyses of a speed control model for continuous dieless drawing process of tapered pipes

1. State Key Laboratory for Advanced Metal and Materials, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

摘要

摘要: 基于金屬體積非壓縮性原理建立了錐形管連續無模拉拔速度控制模型,分析了無模拉拔變形過程中拉拔速度等工藝參數對變形區體積以及錐形管形狀和尺寸的影響,并進行了實驗驗證.結果表明:拉拔速度不僅與進料速度、坯料尺寸、拉拔后錐形管的形狀和尺寸有關,還與冷熱源距離等工藝參數有關;拉拔速度隨時間呈非線性增加;隨著拉拔速度的增大,變形區的體積減小;冷熱源距離越長、進料速度越大,變形區體積變化越大;當速比一定時,減小進料速度、增大冷熱源距離,可以減小錐形管形狀和尺寸誤差、提高控制精度.
- 錐形管 /
- 無模拉拔 /
- 拉拔速度 /
- 控制模型
Abstract: A speed control model for continuous dieless drawing process of tapered pipes is established on the basis of the volume incompressibility principle of metal. The effects of drawing speed and other deformation process parameters on the volume of the deformation zone and the size of the tapered pipe were analyzed and verified by experiment. The results show that the drawing speed is related to the feed speed, the size of the blank pipe, the size of the tapered pipe and the hot-to-cold source distance. The drawing speed increases with time non-linearly. With an increase of drawing speed, the volume of the deformation zone declines;but with the hot-to-cold source distance lengthening and the feed speed increasing, the volume of the deformation zone changes significantly. When the proportion of feed speed to drawing speed is fixed, reducing the feed speed and enlarging the hot-to-cold source distance can reduce the dimension error and increase the control precision.
- tapered pipe /
- dieless drawing /
- drawing speed /
- control model