Effect of Gating System and Process Conditions on the Quality of Thin-Walled Supperalloy Adjust Sheet

doi:10.15980/j.tzzz.2014.04.020

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Effect of Gating System and Process Conditions on the Quality of Thin-Walled Supperalloy Adjust Sheet
Vol. 34, Issue 4, Pages: 389-391(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.04.020

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[1]张贺,韩大平,张向明,冯文刚,屠晓林,朱洪斌.浇注系统对高温合金薄壁熔模铸件质量的影响[J].特种铸造及有色合金,2014,34(04):389-391.

Effect of Gating System and Process Conditions on the Quality of Thin-Walled Supperalloy Adjust Sheet. [J]. Special Casting & Nonferrous Alloys 34(4):389-391(2014)
[1]张贺,韩大平,张向明,冯文刚,屠晓林,朱洪斌.浇注系统对高温合金薄壁熔模铸件质量的影响[J].特种铸造及有色合金,2014,34(04):389-391. DOI： 10.15980/j.tzzz.2014.04.020.

Effect of Gating System and Process Conditions on the Quality of Thin-Walled Supperalloy Adjust Sheet. [J]. Special Casting & Nonferrous Alloys 34(4):389-391(2014) DOI： 10.15980/j.tzzz.2014.04.020.

摘要

K424合金调节片为某型号航空发动机矢量喷口部位的核心部件

属于典型的大尺寸薄壁结构件

采用熔模铸造工艺整体铸造成形。在调节片生产过程中

冶金质量难以控制

裂纹、缩松问题一直是影响铸件成品率的主要原因。经试验分析

确定了裂纹、缩松缺陷形成原因及影响因素。通过优化浇注系统、控制型壳预热温度和浇注温度

显著降低了铸件裂纹、缩松缺陷废品率

获得了冶金质量优良的调节片铸件

提高了工艺成品率。

Abstract

The K424superalloy adjustment sheet as one of the core components of the aero-engine which belongs to large size thin-walled structural parts was produced by investment casting.The porosity

crack can be easily observed in the adjust sheet during the investment process as a result of metallurgical quality.Origination of crack and shrinkage porosity was analyzed.By optimizing gating system

controlling pre-heating temperature of the mold and pouring temperature

crack and shrinkage porosity can be reduced greatly.adjust sheet with desirable quality was produced

obviously improving the yield production rate.