Optimization Design of Improving the Quality and Yield of the Investment Casting Heat Resistant Steel Exhausting Manifold

Fang Yuan1; Zhou Jixiang2; Yu Yun3; Wei Wei1; Hu Jing1

doi:10.15980/j.tzzz.2013.06.023

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Optimization Design of Improving the Quality and Yield of the Investment Casting Heat Resistant Steel Exhausting Manifold
Vol. 33, Issue 6, Pages: 539-542(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.06.023

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[1]方圆,周吉祥,于赟,魏伟,胡静.耐热钢排气歧管熔模铸造的工艺优化[J].特种铸造及有色合金,2013,33(06):539-542.

Fang Yuan1, Zhou Jixiang2, Yu Yun3, et al. Optimization Design of Improving the Quality and Yield of the Investment Casting Heat Resistant Steel Exhausting Manifold. [J]. Special Casting & Nonferrous Alloys 33(6):539-542(2013)
[1]方圆,周吉祥,于赟,魏伟,胡静.耐热钢排气歧管熔模铸造的工艺优化[J].特种铸造及有色合金,2013,33(06):539-542. DOI： 10.15980/j.tzzz.2013.06.023.

Fang Yuan1, Zhou Jixiang2, Yu Yun3, et al. Optimization Design of Improving the Quality and Yield of the Investment Casting Heat Resistant Steel Exhausting Manifold. [J]. Special Casting & Nonferrous Alloys 33(6):539-542(2013) DOI： 10.15980/j.tzzz.2013.06.023.

摘要

对耐热钢排气歧管熔模铸件原工艺设计方案进行了试验

分析了铸件品质较差、工艺出品率较低的原因。提出了优化设计方案

具体为增大冒口尺寸、增加冒口补缩距离

冒口体积由78cm3增大到126cm3;减小直浇道尺寸

直浇道设置在排气管上部

直浇道体积由958cm3减小为370cm3。同时采用优化设计方案进行了生产试制

获得了表面品质良好的铸件

且工艺出品率由提高至。最后

采用模拟软件分析了原设计铸造缺陷的形成原因。

Abstract

The initial process of investment casting heat resistant steel exhaust manifold was analyzed. The reasons of poor quality and low product yield were discussed. Optimized scheme was presented. The riser volume is enlarged from 78 cm3 to 126cm3 to increase the feeding distance

and the spure volume is reduced from 958 cm3 to 370 cm3 with the sprue shifting to the top of the exhausting pipe. The experimental trial was conducted with the help of the optimized process parameters

and soundness castings were produced successfully. Meanwhile

the product yield is increased from 38.8% to 49.1%. Finally

with the help of ProCast software

the casting defects in original design were visualized and confirmed.