Gating of Permanent Molds for ALuminum Casting

Schwam, David ; Wallace, John F. ; Engle, Tom ; Chang, Qingming

Case Western Reserve University

关键词: Aluminium;    Casting;    Foundries;    Heat Flux;    36 Materials Science;   

DOI  :  10.2172/822451
RP-ID  :  NONE
RP-ID  :  FC36-01ID13983
RP-ID  :  822451

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report summarizes a two-year project, DE-FC07-01ID13983 that concerns the gating of aluminum castings in permanent molds. The main goal of the project is to improve the quality of aluminum castings produced in permanent molds. The approach taken was determine how the vertical type gating systems used for permanent mold castings can be designed to fill the mold cavity with a minimum of damage to the quality of the resulting casting. It is evident that somewhat different systems are preferred for different shapes and sizes of aluminum castings. The main problems caused by improper gating are entrained aluminum oxide films and entrapped gas. The project highlights the characteristic features of gating systems used in permanent mold aluminum foundries and recommends gating procedures designed to avoid common defects. The study also provides direct evidence on the filling pattern and heat flow behavior in permanent mold castings.