Design of Gating System for Superalloy Thin-Walled Investment Castings

Pan Botao; Tu Xiaolin; Feng Wengang

doi:10.15980/j.tzzz.2012.08.029

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Design of Gating System for Superalloy Thin-Walled Investment Castings
Vol. 32, Issue 8, Pages: 757-758(2012)
Published： 2012 ，
DOI： 10.15980/j.tzzz.2012.08.029

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[1]潘波涛,屠晓林,冯文刚.高温合金薄壁铸件浇注系统设计[J].特种铸造及有色合金,2012,32(08):757-758.

Pan Botao, Tu Xiaolin, Feng Wengang. Design of Gating System for Superalloy Thin-Walled Investment Castings. [J]. Special Casting & Nonferrous Alloys 32(8):757-758(2012)
[1]潘波涛,屠晓林,冯文刚.高温合金薄壁铸件浇注系统设计[J].特种铸造及有色合金,2012,32(08):757-758. DOI： 10.15980/j.tzzz.2012.08.029.

Pan Botao, Tu Xiaolin, Feng Wengang. Design of Gating System for Superalloy Thin-Walled Investment Castings. [J]. Special Casting & Nonferrous Alloys 32(8):757-758(2012) DOI： 10.15980/j.tzzz.2012.08.029.

摘要

某高温合金调节片采用熔模精密铸造方法生产。该调节片尺寸为330mm×240mm

壁厚为0.8mm

并有多处纵横交错的加强筋

铸造成形难度较大

在铸造过程中铸件易产生欠铸、冷隔、疏松、裂纹等缺陷

其合格率较低。重点叙述了通过改进、优化铸件浇注系统的设计

有效消除了铸件的冷隔、欠铸缺陷

铸件的合格率大幅度提升

工艺出品率提高到原来的2倍左右。

Abstract

A superalloy adjusting piece with 330 mm in length and 240 mm in width and 0.8 mm in wall thickness was produced by investment casting.The forming of the adjusting piece became very difficulty due to its complicated structure and many strengthened crossover ribs

resulting in the misrun

cold shut

shrinkage porosity and crack in the piece during investment casting and low qualified rate.Through optimizing gating system design

cold shut and misrun in the castings were eliminated effectively

greatly increasing the qualified rate

meanwhile

the production yield was increased by about 2 times.