Method of producing heat-resistant parts

Details Method of producing heat-resistant parts Method of producing heat-resistant parts

1977-04-28

1979-04-24

Peters, G. O.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 4, 148 131, B22F 324

Patent

active

041510178

ABSTRACT:
A part is formed of a metal-base material having high heat-resistance. The part may be formed by sintering or sinter forging. The part is provided with a skin formed of a material having a melting point above the melting point of the material of which the part is formed. The skin-bearing part is then heat treated in a vacuum at a temperature near the melting temperature of the material of which the part is formed, but below the melting temperature of the skin material. The skin material may be evaporable and precipitated from a gaseous phase on to the part. Precipitation may take place at the heat treatment temperature. The part preferably shrinks during heat treatment so as not to put tensile stress on the skin.

REFERENCES:
patent: 2989428 (1961-06-01), Rymer
patent: 3102044 (1963-08-01), Joseph
patent: 3310440 (1967-03-01), Piearcey
patent: 3528861 (1970-09-01), Elam
patent: 3765958 (1973-10-01), Freche et al.
patent: 3977915 (1976-08-01), Greenwood
patent: 3999954 (1976-12-01), Kolaska et al.
patent: 4034142 (1977-07-01), Hecht

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