工艺参数对Q460高强度钢冷挤压内螺纹质量的影响

吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (01): 68-73.

工艺参数对Q460高强度钢冷挤压内螺纹质量的影响

缪宏¹, 左敦稳², 王珉², 张瑞宏¹, 汪洪峰²

1. 扬州大学机械工程学院,江苏扬州 225000;
2. 南京航空航天大学机电学院,南京 210016

收稿日期:2010-11-11 出版日期:2012-01-01 发布日期:2012-01-01
作者简介:缪宏(1981-),男,讲师,博士研究生.研究方向:抗疲劳制造技术.E-mail:mh0514@163.com
基金资助:
"863"国家高技术研究发展计划项目(SQ2008AA10XK1468859);"十二五"国家科技计划项目(2011BAD20B03-02).

Effect of technological parameters on quality of Q460 high-strength-steel internal thread formed by cold extrusion

MIAO Hong¹, ZUO Dun-wen², WANG Min², ZHANG Rui-hong¹, WANG Hong-feng²

1. College of Mechanical Engineering,Yangzhou University, Yangzhou 225000,China;
2. Mechanical Engineering Institute, Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China

Received:2010-11-11 Online:2012-01-01 Published:2012-01-01

摘要/Abstract

摘要：

试验研究了Q460高强度钢内螺纹的冷挤压工艺特性,分析了工件底孔直径、挤压速度与挤压次数对冷挤压内螺纹质量(包括表面形态、残余应力与显微硬度等)的影响,并优选工艺参数获得理想的内螺纹。结果表明:Q460高强度钢内螺纹冷挤压加工宜采用一次成形工艺,工件底孔直径最佳取值范围为21.20~21.30 mm,机床转速为20~40 r/ min。

关键词: 材料合成与加工工艺, Q460高强度钢, 内螺纹加工, 冷挤压工艺, 残余应力, 硬度

Abstract:

The process performance of cold extrusion of Q460 high-strength-steel internal thread was studied by experiments. The effects of hole-diameter, extrusion speed and number of extrusions on the quality of the thread, such as surface morphology, residual stress and micro hardness were analyzed. High quality internal thread was obtained by optimization of the technological parameters. Results show that the optimized technological parameters are as follows, the hole-diameter is in the range of 21.20 mm to 21.30 mm, the rotation speed of the machine tool is from 20 r/min to 40 r/min, one-step cold extrusion forming is the best technology rather than multi-step extrusion.

Key words: materials synthesis and processing technology, Q460 high-strength steel, internal thread processing, cold extrusion technique, residual stress, hardness

中图分类号:

TG376.2

缪宏, 左敦稳, 王珉, 张瑞宏, 汪洪峰. 工艺参数对Q460高强度钢冷挤压内螺纹质量的影响[J]. 吉林大学学报(工学版), 2012, 42(01): 68-73.

MIAO Hong, ZUO Dun-wen, WANG Min, ZHANG Rui-hong, WANG Hong-feng. Effect of technological parameters on quality of Q460 high-strength-steel internal thread formed by cold extrusion[J]. 吉林大学学报(工学版), 2012, 42(01): 68-73.

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