engleski

High pressure die casting mould repair technologies

This paper presents the most commonly used technologies for repairing high pressure die cast moulds. This production technology successfully solves most problems of the conventional casting technologies like: casting porosity, high surface roughness, long casting production times, inability to produce thin cross-sections and low dimensional accuracy. Material used for the high pressure die casting permanent mould is a highly alloyed hot work tool steel H13 (ASTM). During exploitation, the moulds surface is damaged, mostly by thermal cracking. Mould is repaired to extend its life span and reduce costs of production.

Mould wear ; Thermal fatigue ; Welding ; Tool steel

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