Analysis and Solution of Shrinkage Porosities Defects in Investment Castings

Su Liansheng

doi:10.15980/j.tzzz.2022.10.023

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Analysis and Solution of Shrinkage Porosities Defects in Investment Castings
Vol. 42, Issue 10, Pages: 1309-1312(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.10.023

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Su Liansheng. Analysis and Solution of Shrinkage Porosities Defects in Investment Castings. [J]. Special Casting & Nonferrous Alloys 42(10):1309-1312(2022)
DOI：

Su Liansheng. Analysis and Solution of Shrinkage Porosities Defects in Investment Castings. [J]. Special Casting & Nonferrous Alloys 42(10):1309-1312(2022) DOI： 10.15980/j.tzzz.2022.10.023.

摘要

缩松缺陷是熔模铸造中常出现的问题，其原因是热节部位得不到补缩，因此使铸件热节部位得到充分的补缩就能有效解决缩松缺陷，一般通过增加钢水补缩量、打通补缩通道、改善散热条件等。就实际生产中常见的缩松产生原因及其解决方案进行阐述。

Abstract

Shrinkage porosity defects easily occurrs in investment casting

which is attrisuted to the adequate feeding for the hot spot. Investment casting shrinkage porosities sol silicate. Hot spot so shrinkage porosities can be eliminated effectively by the effectiv feeding

including adding liquid steel feeding

opening up the shrinkage channel

and improving the heat dissipation condition

etc. The causes and solutions of shrinkage in practical production were expounded.