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US 4,228,670 AGranted
Process for the isothermal forging of a work piece
AssigneeBBC Brown, Boveri & Company, Limited
InventorsChristopher W. Corti, Rolf Luthi, Ernst Vogt
Life of this patent
Estimating the term…
Abstract
A process for the lubrication of a tool surface which comprises high pressure blast spraying a powder lubricant having a particle size of 0.6 to 1.5 .mu. at a spray pressure of 4 to 5 bar, onto the tool surface thereby producing a high temperature compacted coherent lubricant film on the surface while simultaneously smoothing, strengthening and compressively stressing the tool surface.
Claims13
A process for the lubrication of a tool surface which comprises:
- high pressure blast spraying a powder lubricant comprising boron nitrite having a particle size of 0.6 to 1.5.mu. at a spray pressure of 4 to 5 bar, onto said tool surface thereby producing a high temperature compacted coherent lubricant film on said surface while simultaneously smoothing, strengthening and compressively stressing said tool surface.
Dependencies are inferred from the claim text.