ZL205A合金铸件中偏析的形成机理与预防措施

周永江; 左强; 范学燚; 洪润洲

doi:10.15980/j.tzzz.2018.02.003

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ZL205A合金铸件中偏析的形成机理与预防措施
Formation Mechanism and Prevention of Linear Segregation in ZL205A Alloy Castings
2018年38卷第2期页码：125-127
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.02.003

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[1]周永江,左强,范学燚,洪润洲.ZL205A合金铸件中偏析的形成机理与预防措施[J].特种铸造及有色合金,2018,38(02):125-127.

Zhou Yongjiang, Zuo Qiang, Fan Xueyi, et al. Formation Mechanism and Prevention of Linear Segregation in ZL205A Alloy Castings[J]. Special Casting & Nonferrous Alloys, 2018,38(2):125-127.
[1]周永江,左强,范学燚,洪润洲.ZL205A合金铸件中偏析的形成机理与预防措施[J].特种铸造及有色合金,2018,38(02):125-127. DOI： 10.15980/j.tzzz.2018.02.003.

Zhou Yongjiang, Zuo Qiang, Fan Xueyi, et al. Formation Mechanism and Prevention of Linear Segregation in ZL205A Alloy Castings[J]. Special Casting & Nonferrous Alloys, 2018,38(2):125-127. DOI： 10.15980/j.tzzz.2018.02.003.

摘要

通过对ZL205A合金圆筒形铸件的3种铸造工艺的比较

分析了ZL205A合金铸件中线性偏析的形成条件、形成机理、预防措施。经优化浇注系统后

采用中空的砂芯等方式消除铸件热节和应力

成功消除了铸件的线性偏析。

Abstract

The formation mechanism and prevention of liner segregation in Al-Cu alloy castings were analyzed.Through comparison with three kinds of processes of Al-Cu alloy cylinder castings

the formation condition

formation mechanism and composition of linear segregation in Al-Cu alloy castings were described.And then the prevention of linear segregation in Al-Cu alloy casting was presented.Through optimizing gating system and setting hollow sand core to eliminate hot spot and stress

linear segregation in the castings was eliminated sucessfully.