流变挤压铸造2024铝合金轮毂组织及其典型缺陷分析

刘兴海; 张继渊; 李元东; 周宏伟; 张心龙

doi:10.15980/j.tzzz.2013.11.024

专利文献信息 | 浏览量 : 0 下载量: 172 CSCD: 2

导出
分享
收藏
专辑

流变挤压铸造2024铝合金轮毂组织及其典型缺陷分析
Analysis of Microstructure and Typical Defects in 2024 Wrought Aluminum Alloy Wheel Hub by Rheo-squeeze Casting
2013年33卷第11期页码：1016-1020
纸质出版日期： 2013 ，
DOI： 10.15980/j.tzzz.2013.11.024

扫描看全文

[1]刘兴海,张继渊,李元东,周宏伟,张心龙.流变挤压铸造2024铝合金轮毂组织及其典型缺陷分析[J].特种铸造及有色合金,2013,33(11):1016-1020.

Liu Xinghai, Zhang Jiyuan, Li Yuandong, et al. Analysis of Microstructure and Typical Defects in 2024 Wrought Aluminum Alloy Wheel Hub by Rheo-squeeze Casting[J]. Special Casting & Nonferrous Alloys, 2013,33(11):1016-1020.
[1]刘兴海,张继渊,李元东,周宏伟,张心龙.流变挤压铸造2024铝合金轮毂组织及其典型缺陷分析[J].特种铸造及有色合金,2013,33(11):1016-1020. DOI： 10.15980/j.tzzz.2013.11.024.

Liu Xinghai, Zhang Jiyuan, Li Yuandong, et al. Analysis of Microstructure and Typical Defects in 2024 Wrought Aluminum Alloy Wheel Hub by Rheo-squeeze Casting[J]. Special Casting & Nonferrous Alloys, 2013,33(11):1016-1020. DOI： 10.15980/j.tzzz.2013.11.024.

摘要

采用自孕育法制浆工艺制备2024变形铝合金浆料

进行流变挤压铸造轮毂零件的试制

分析了成形件的微观组织形成与典型缺陷的形成原因

并提出了解决措施。结果表明

浇不足和冷隔缺陷可以通过加大冲头下行速度

增大充型压力

提高模具预热温度等措施来消除。缩松、缩孔缺陷可以通过增大保压压力和延长保压时间来控制。热裂缺陷可以通过控制浆料固相率

合理调整充型压力和保压时间来防止。

Abstract

Semi-solid slurries of 2024wrought aluminum alloy were produced by self-inoculation technique.The microstructure and typical defects of wheel hub parts which were trial-produced by rheosqueeze forming were investigated

and the countermeasures of these defects were presented.The results reveal that through increasing the velocity of the punch and filling pressure as well as raising preheating temperature of the mould

misrun and cold shut in the wheel hub can be eliminated.Through increasing hold-pressure and hold time

shrinkage porosity（hole）can be decreased.Through controlling solid fraction of the slurries

adjusting filling pressure and holding time

hot crack is avoided.