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US 3,945,240 AGranted
Diffusion bonding separator
AssigneeUnited Technologies Corporation
InventorBruce T. Brown
Life of this patent
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Abstract
A separator of solid boron nitride is utilized to prevent diffusion bonding between an alloy being worked at high temperature and the components of working apparatus.
Claims4
Metal deformation apparatus which comprises:
- at least one movable, pressure-exerting member;
- and
- a pressure-exerting surface on said member for contact with a solid metal article being processed, said surface consisting essentially of solid boron nitride of substantially full density.
Forging dies consisting essentially of cast boron nitride.
Dependencies are inferred from the claim text.