深冷处理对铝合金薄板冲剪成形性能的影响

doi:10.13229/j.cnki.jdxbgxb20170576

吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (5): 1524-1530.doi: 10.13229/j.cnki.jdxbgxb20170576

深冷处理对铝合金薄板冲剪成形性能的影响

胡志清^1,2, 颜庭旭³, 李洪杰³, 吕振华³, 廖伟³, 刘庚³

1.吉林大学辊锻工艺研究所,长春 130022;
2.吉林大学汽车材料教育部重点实验室,长春 130022;
3.吉林大学材料科学与工程学院,长春130022

收稿日期:2017-06-05 出版日期:2018-09-20 发布日期:2018-12-11
作者简介:胡志清(1974-),男,副教授,博士.研究方向:板材柔性成形工艺.E-mail:zqhu@jlu.edu.cn
基金资助:
国家自然科学基金项目(51275201,51311130129);吉林省重点科技攻关项目(20140204062GX)

Effect of cryogenic treatment on punch-shearing performance of aluminum alloy sheet

HU Zhi-qing^1,2, YAN Ting-xu³, LI Hong-jie³, LYU Zhen-hua³, LIAO Wei³, LIU Geng³

1.Roll Forging Research Institute,Jilin University,Changchun 130022,China;
2.Key Laboratory of Automobile Materials, Ministry of Education, Jilin University, Changchun 130022,China;
3.College of Materials Science and Engineering,Jilin University,Changchun 130022,China

Received:2017-06-05 Online:2018-09-20 Published:2018-12-11

摘要/Abstract

摘要： 对原态6061铝合金薄板进行了退火和深冷处理,通过拉伸、硬度和冲剪等实验,分析了退火和深冷处理对材料性能的影响。结果表明:采用均匀化退火加不同深冷处理的方法可改善断面光洁度,减小毛刺发生或降低毛刺高度;随着深冷时间增加,强度总体降低,而塑性总体增强,从深冷状态返回室温后强度有所回升,毛刺发生率降低且光亮带先增后减;深冷处理8 h后保持深冷状态在线冲剪所得断面质量(塌角、光亮带以及毛刺)综合性能最好,若以降低毛刺高度为主要目标,则8 h深冷后返回室温冲剪效果较佳。

关键词: 材料合成与加工工艺, 6061铝合金, 退火处理, 在线深冷处理, 冲剪成形

Abstract: 6062 aluminum alloy is annealed, and then is treated by deep cryogenic temperature at different time. Through stretching, hardness measurement and punch-shearing experiments, the effect of cryogenic temperature on the material properties is analyzed. The results show that the mean annealing and cryogenic temperature at different time can improve the smooth zone and reduce burr or reduce burr height. With the increase in cryogenic time, the intensity is reduced, however, the plasticity is improved. While, the temperature returns from cryogenic to normal the intensity increases step by step, and the burrs are reduced and smooth zone increases and then decreases. The tests were treated by deep cryogenic temperature for 8 h and kept real-time cryogenic temperature, and punch-shearing was carried out and comprehensive quality, such as collapse angle, burr and smooth zone, is best. If the target is to reduce the burr, after 8 h cryogenic treatment and return to room temperature, the result of real-time punch shearing is better.

Key words: materials synthesis and processing technology, 6061 aluminum alloy, annealing treatment, deep cryogenic treatment(DCT), punch shearing

中图分类号:

TG386.2

胡志清, 颜庭旭, 李洪杰, 吕振华, 廖伟, 刘庚. 深冷处理对铝合金薄板冲剪成形性能的影响[J]. 吉林大学学报(工学版), 2018, 48(5): 1524-1530.

HU Zhi-qing, YAN Ting-xu, LI Hong-jie, LYU Zhen-hua, LIAO Wei, LIU Geng. Effect of cryogenic treatment on punch-shearing performance of aluminum alloy sheet[J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(5): 1524-1530.

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深冷处理对铝合金薄板冲剪成形性能的影响

Effect of cryogenic treatment on punch-shearing performance of aluminum alloy sheet

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