Effects of Casting Technology on Segregation Defects in the ZL205A Alloy Large Axisymmetric-body

Yang Sheng; Ruan Lei; Li Shasha; Luo Chuanbiao; Du Xuchu; Huang Li

doi:10.15980/j.tzzz.2018.05.010

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Effects of Casting Technology on Segregation Defects in the ZL205A Alloy Large Axisymmetric-body
Vol. 38, Issue 5, Pages: 501-504(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.05.010

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[1]杨胜,阮磊,厉沙沙,罗传彪,杜旭初,黄粒.铸造工艺对ZL205A大型回转体铸件偏析缺陷的影响[J].特种铸造及有色合金,2018,38(05):501-504.

Yang Sheng, Ruan Lei, Li Shasha, et al. Effects of Casting Technology on Segregation Defects in the ZL205A Alloy Large Axisymmetric-body. [J]. Special Casting & Nonferrous Alloys 38(5):501-504(2018)
[1]杨胜,阮磊,厉沙沙,罗传彪,杜旭初,黄粒.铸造工艺对ZL205A大型回转体铸件偏析缺陷的影响[J].特种铸造及有色合金,2018,38(05):501-504. DOI： 10.15980/j.tzzz.2018.05.010.

Yang Sheng, Ruan Lei, Li Shasha, et al. Effects of Casting Technology on Segregation Defects in the ZL205A Alloy Large Axisymmetric-body. [J]. Special Casting & Nonferrous Alloys 38(5):501-504(2018) DOI： 10.15980/j.tzzz.2018.05.010.

摘要

ZL205A合金大型回转体铸件的偏析缺陷严重影响了其使用性能。采用ProCAST软件

对不同浇注工艺下的回转体铸件浇注充型过程和凝固过程温度场分布进行了模拟

并将优化工艺在回转体铸件生产中进行了验证。结果表明

低压铸造浇注系统中立筒直径为80mm

缝隙长度为35mm

缝隙宽度为25mm时为最佳

可有效降低铸件凝固时的温度梯度

实现顺序凝固

有效改善铸件的偏析缺陷。

Abstract

Segregation in the ZL205 Aalloy large axisymmetric-body is harmful greatly to the properties of the castings.By using ProCAST software

the effects of casting parameters on the filling process and temperature distribution of the castings were simulated.Moreover

the optimized processing parameters were also used in the manufacturing of the axisymmertric-body to verify the calculation results.The results show that

by using low pressure casting process

the rational casting parameters

such as d=80 mm

b=35 mm

δ=25 mm

can improve significantly the segregation defects of the casting by decreasing the temperature gradient to realize the sequential solidification.