Patent ID: 7836615

Claim:
An expendable wear part adapted for replaceable attachment, comprising: a wear part comprising a unified steel casting having a mounting surface and a wear surface; said wear surface having at least a first casted cavity including a length extending along and integral with said wear surface; said at least first cavity including an abrasion-resistant reconstitutable welding deposit therein whereby abrasion action on said wear surface is reduced by said deposit; said deposit comprising a weldment material selected from the group consisting of chrome carbide, vanadium carbide, and tungsten carbide; said weldment material having a higher hardness than said steel casting for extending the service life of said wear surface of said wear part; said welding deposit in at least said first cavity initially overfills said cavity forming a substantially bulbous deposit extending outwardly from said wear surface of said casting; said bulbous deposit having a surface area, wherein said bulbous deposit surface area extending initially in a co-linear arrangement with said wear surface and wherein said welding deposit extending co-planar with said wear surface at a time of reconstituting said weldment over substantially same said length; and, wherein substantially all of said deposit surface area exposed to the abrasive action.