Wan Jinbiao1, Zhu Jinlun2. Comprehensive Solution Method of Black Point in Stainless Steel Investment Castings. [J]. Special Casting & Nonferrous Alloys 29(2):150-152(2009)
Wan Jinbiao1, Zhu Jinlun2. Comprehensive Solution Method of Black Point in Stainless Steel Investment Castings. [J]. Special Casting & Nonferrous Alloys 29(2):150-152(2009)DOI:
Comprehensive Solution Method of Black Point in Stainless Steel Investment Castings
摘要
对精密铸件的黑点缺陷进行了分析
通过改进浇注系统
在内浇道放置陶瓷过滤片
以及采取缩小内浇道或内浇道宽度的方法
可以有效地消除黑点。另外
对脱蜡后型壳内的残蜡要彻底消除
在精炼和浇注时
要注意脱氧和浇注操作工艺的合理性。
Abstract
Black point defects in investment casting stainless parts were analyzed.Through adjusting gating system
setting filter screen at ingate to filter and purify liquid metal
and reducing ingate area or runner width
black point in the casting can be greatly eliminated.In addition
removal of residual wax should be completely cleaned
and rational deoxide operation should be noted in process of refinery and pouring.