Production of metal compacts

Details Production of metal compacts Production of metal compacts

1978-11-13

1980-06-10

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

75200, 75211, 148126, C21D 148

Patent

active

042071208

ABSTRACT:
The invention relates to the continuous production of steel compacts in strip form from as-atomized stainless steel powder. A porous green compact of stainless steel powder having a carbon content not exceeding 0.06% by weight is through-carburized to raise its carbon content to a level in excess of that required in the product and then subsequently heat treated in a reducing atmosphere to promote chemical reaction between the carbon and oxygen present in the compact to reduce the former to a level not exceeding 0.03% by weight and the latter by a factor of two. Through-carburizing and reduction may be effected in successive zones 2,3 of a continuous floatation furnace 1.

REFERENCES:
patent: Re22452 (1944-03-01), Clements et al.
patent: 2489838 (1949-11-01), Webb
patent: 4063940 (1977-12-01), Dain et al.
patent: 4153485 (1979-05-01), Ogata et al.

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