熔模精密铸造型壳局部淬水工艺探讨

包玉秋; 鲁蕊; 张大伟

doi:10.15980/j.tzzz.2012.10.020

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熔模精密铸造型壳局部淬水工艺探讨
Application of Partial Shell Quenching in Investment Casting
2012年32卷第10期页码：928-931
纸质出版日期： 2012 ，
DOI： 10.15980/j.tzzz.2012.10.020

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[1]包玉秋,鲁蕊,张大伟.熔模精密铸造型壳局部淬水工艺探讨[J].特种铸造及有色合金,2012,32(10):928-931.

Bao Yuqiu, Lu Rui, Zhang Dawei. Application of Partial Shell Quenching in Investment Casting[J]. Special Casting & Nonferrous Alloys, 2012,32(10):928-931.
[1]包玉秋,鲁蕊,张大伟.熔模精密铸造型壳局部淬水工艺探讨[J].特种铸造及有色合金,2012,32(10):928-931. DOI： 10.15980/j.tzzz.2012.10.020.

Bao Yuqiu, Lu Rui, Zhang Dawei. Application of Partial Shell Quenching in Investment Casting[J]. Special Casting & Nonferrous Alloys, 2012,32(10):928-931. DOI： 10.15980/j.tzzz.2012.10.020.

摘要

介绍了型壳局部淬水工艺及其要点

并用大量事例证明

型壳局部淬水改变了铸件凝固时的温度分布和凝固顺序

消除了由于铸件热节、局部型壳过厚引起的缩孔、缩松、组织不致密等缺陷

具有"冷铁效应"。同时

提出了法兰类阀体、阀盖铸件采用型壳局部淬水工艺时

法兰盘厚度（H）与阀体壁厚或流量孔壁厚（M）之比的有效值

即H:M≤3。

Abstract

Partial shell quenching process and its key points were described.Many practical products show that through adopting partial shell quenching process

shrinkage porosity（hole） and un-sound microstructure resulting from hot spot and partial over-thick shell can be eliminated by realizing uniform temperature distribution and sequential solidification

exhibiting chilling effect.Thickness of the flange to wall-thickness of valve body or wall-thickness of flow channel is less than or equal to 3 when the partial shell quenching is applied for flange valve body and valve cover.