Abstract
The article deals with the analysis of service durability of "excavator bucket tooth” casting. The authors show that excavator bucket tooth wear mainly occurs in two manners - microcutting when exposed to abrasive soils and fatigue failure by cyclical exposure to impact-abrasive wear. Casting forming has been simulated. Areas prone to formation of casting defects in the form of hidden cavities, microporosity and segregation have been identified. The authors also show that further performance improvement requires an integrated approach including detail design modification, improvement of casting technology and additional alloying and modification of steel.
Keywords
Hadfield steel, bucket tooth, simulation, abrasion, impact abrasion, casting technology, casting mold.
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