Improvement of the Heat Checking Resistance of Casting Dies by Shot-Peening
Author: Oyama, Kobayashi, Kitagawa, Yokio and Hiraoka
Source: Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 37-42)
Doc ID: 2011006
Year of Publication: 2011
Abstract:
Abstract
In this study, heat treatment and shot-peening conditions were examined for the purpose of improving the heat checking resistance of casting dies.
Nitriding was selected as heat treatment and the two-stepped shot-peening process was used to apply a residual stress after removing the compound layer generated by nitriding.
By manufacturing actual die-cast products and evaluating the damage caused to the dies, it was found that the heat check resistance of nitrided dies is much higher than that of non-nitrided ones.
Keywords
Shot peening, Die-casting, Heat check, Nitriding.
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