Title: Life Analysis of Hot Extrusion Die for Valve Stem
Abstract:In this paper,the hot extrusion processes of valve stems and the inactive ways of the die are analyzed.Through SEM observation,it was found out that the reason of the die's failure is mainly due to gr...In this paper,the hot extrusion processes of valve stems and the inactive ways of the die are analyzed.Through SEM observation,it was found out that the reason of the die's failure is mainly due to groove wears and spalling cavities caused by thermal fatigue cracks.So, high speed steel,matrix steel and carbide steel sintered alloy are used as insert materials for hot extrusion die separately,and it has been proved that carbide steel sintered alloy is the most suitable.However,the lubrication at elevated temperature for the die will be a problem to be resolved in a hurry.Read More
Publication Year: 2000
Publication Date: 2000-01-01
Language: en
Type: article
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