Method of healing cracks and flaws in a previously sintered cemented carbide tools
AssigneeUS Synthetic Corporation
InventorLouis M. Pope
Life of this patent
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Abstract
This patent covers the concept of putting a previously sintered carbide tool or part back through the sintering process. This resintering, heals stress related microcracks which, when allowed to progress, could ultimately be a cause of the failure for the object. This produces a longer life, better quality cemented carbide tool to be used for cyclically applying pressure and/or heat.
Claims8
A method of healing internal microcracks and internal fatigue flaws in a previously sintered cemented carbide object comprising resintering said object for a predetermined period of time at about the same as the original sintering temperatures and heating cycles.
A method of repairing internal cracks in a cemented carbide tool made using a predetermined sintering process, where such cracks have not yet reached the surface of the tool, comprising resintering the tool using substantially the same predetermined process.
Dependencies are inferred from the claim text.