Annealing of high speed steel powder

Details Annealing of high speed steel powder Annealing of high speed steel powder

1983-01-20

1985-05-28

O'Keefe, Veronica

Metal treatment

Compositions

Heat treating

1481261, B22F 01

Patent

active

045198527

ABSTRACT:
In order to anneal high speed steel powder having a hardness of the order of about 550 to 600 Vickers and an oxygen content of 1500-2000 ppm, the powder is heated to a maximum temperature of about 1050.degree. C. and held at that temperature for about one hour. The powder is then gas quenched to between 700.degree. and 780.degree. C., held at that temperature for about one hour, and finally gas quenched to ambient temperature.

REFERENCES:
patent: 4385929 (1983-05-01), Ichidate et al.

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