锻压技术

高精度液压柔性冷拔工艺的有限元模拟和实验分析

英文标题：Numerical simulation and experimental analysis of hydraulic flexibility cold-drawing process with high precision

作者：张志武双远华张闯周研

单位：太原科技大学

分类号：

出版年,卷(期):页码：2015,40(4):78-84

摘要：

高精度液压柔性冷拔工艺是一种新型的钢管冷加工工艺。利用Deform-3D有限元分析软件对液压柔性冷拔工艺中冷拔模具和钢管之间的受力状态进行数值模拟。对不同工艺参数条件下，钢管分别通过4个模具油槽时的应力、应变状态及变形规律进行模拟；分析了在柔性冷拔过程中钢管横截面壁厚增量及钢管纵截面壁厚延伸量的变化规律。采用优化后的工艺参数及改进后的模具结构，对20#无缝钢管进行高精度液压柔性冷拔工艺试验；试验成形的钢管减径效果明显，管坯直径由Φ30 mm×2 mm减至Φ26 mm×2 mm，实现了冷拔减径目标，钢管壁增厚量微小，平均增厚量为0.02 mm，表面成形质量良好，试验结果与模拟结果相符。

High precision hydraulic flexible tube cold-drawing process is a new technology of cold-working process. The force state between the cold-drawing die and steel tube in the hydraulic flexible cold-drawing process was numerically simulated by the finite element analysis software Deform-3D. The states of stress, strain and deformation regulation were simulated when the steel tube went through four die oil grooves respectively under the condition of different process parameters. The change regulations of the cross section thickness increment and longitudinal section wall thickness elongation of the steel tube in the process of flexible cold drawing were analyzed. The high precision hydraulic flexible cold-drawing tests for the 20# seamless steel tube were carried on with the optimized process parameters and the improved die structure. The effect of reducing diameter on the steel tube is obvious, and the tube billet diameter drops from Φ30 mm×2 mm to Φ 26 mm×2 mm. Thus, the goal of cold-drawing reducing diameter is achieved. The thickening of steel tube wall is very tiny, and the average amount is 0.02 mm. The test results are in conformity with the simulation results, and the surface forming quality is good.

基金项目：

太原科技大学研究生科技创新项目（20134006）

张志武（1988-），男，硕士研究生

参考文献：

[1]双远华.现代无缝钢管生产技术 [M].北京：化学工业出版社，2008.

Shuang Y H. Modern Technology of Seamless Steel Tube Production[M]. Beijing：Chemical Industry Press, 2008.

[2]茹铮.塑性加工摩擦学[M].北京：科学出版社，1992.

Ru Z. Plastic Processing of Tribology[M]. Beijing:Science Press, 1992.

[3]Kuzman K,Pfeifer E. Control of material flow in a combined backward can-forward rod extrusion[J]. Journal of Materials Processing Technology，1996,60(1-4):142-147.

[4]Muammer Koc, Taylan Altan. An overall review of the tube hydroforming (THF) technology[J]. Journal of Materials Processing Technology，2001,108(3)：384-393.

[5]Sungtae Kim,Youngsuk Kim. Analytical study for tube hydroforming[J]. Journal of Materials Processing Technology,2002,128(1-3):232-239.

[6]薛隆泉，何亚峰. 基于ANSYS/LS-DYNA的空拔钢管有限元分析[J].塑性工程学报,2005，12（5）:74-77.

Xue L Q, He Y F. FEA on empty-sunken steel tube based on ANSYS/LS-DYNA [J]. Journal of Plasticity Engineering,2005，12（5）:74-77.

[7]胡鸿产，双远华. 新型液压管材拔制成形原理研究[J].太原科技大学学报,2006,27（3）：193-199.

Hu H C, Shuang Y H.Research on the principle of tube drawing with new-type hydraumatic technology [J]. Journal of Taiyuan University of Science and Technology, 2006,27（3）：193-199.

[8]赵振铎，邵明志，张召铎,等. 金属塑性成形中的摩擦与润滑[M].北京：化学工业出版社，2004.

Zhao Z D，Shao M Z，Zhang Z D, et al. Metal Plastic Forming of Friction and Lubrication[M]. Beijing：Chemical Industry Press, 2004.

[9]温景林，丁桦，曹富荣，等. 有色金属挤压与拉拔技术[M].北京：化学工业出版社,2007.

Wen J L，Ding H，Cao F R，et al. Nonferrous Metal Extrusion and Drawing Technology [M]. Beijing：Chemical Industry Press, 2007.

[10]李雪伟，朱燕燕. 冷拔钢管关键工序控制及缺陷消除[J].煤矿机械,2004，（8）：77-78.

Li X W，Zhu Y Y. The control and elimination of the defect in the key working procedure of cold drivering steel pipe[J].Coal Mine Machinery,2004,（8）：77-78.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】