A Study on Investment Casting with Cold Shell Mold

Zhejiang University Bao Yankui

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A Study on Investment Casting with Cold Shell Mold
Issue 6, Pages: 3-6(1988)
Published： 1988 ，
DOI：

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[1]包彦堃.熔模精密铸造冷型浇注研究[J].特种铸造及有色合金,1988(06):3-6.

Zhejiang University Bao Yankui. A Study on Investment Casting with Cold Shell Mold. [J]. Special Casting & Nonferrous Alloys (6):3-6(1988)
[1]包彦堃.熔模精密铸造冷型浇注研究[J].特种铸造及有色合金,1988(06):3-6. DOI：

Zhejiang University Bao Yankui. A Study on Investment Casting with Cold Shell Mold. [J]. Special Casting & Nonferrous Alloys (6):3-6(1988) DOI：

摘要

本文对熔模精密铸造的冷型浇注进行试验研究。试验表明:熔模精密铸造型壳采用冷型浇注

可防止碳钢及低合金钢铸件的表面的氧化脱碳

有利于提高铸件的表面硬度;并可防止或减轻铸件表面的化学粘砂缺陷。试验中对型壳层在浇注后的温度分布进行了测定

对冷型壳的升温及应力变化规律

以及对型壳强度的影响进行了分析;并探讨了铸钢件表面化学粘砂机理。

Abstract

A comprehensive study on investment casting with cold shell moid has been carried out. The results show that pouring in the cold shell mold has the advantage of preventing decarburization at the surface of both plain and low alloy carbon steels

and therefore the positive effect of increasing the surface hardness of castings. This method can also minimize or prevent the chemical burn-on defect of steel castings.In present study the temperature distribution in the shell after pouring has been measured

the regularity of temperature and internal stress changes in the cold shell as well as their effect on the mold strength have been analysed. The mechanism of chemical burn on defect of steel castings is there after investigated.