Protective atmosphere process for annealing and/or hardening fer

Details Protective atmosphere process for annealing and/or hardening fer Protective atmosphere process for annealing and/or hardening fer

1985-04-09

1986-12-30

O'Keefe, Veronica

Metal treatment

Compositions

Heat treating

148 16, 148 166, 148 203, C21D 106, C21D 126

Patent

active

046327070

ABSTRACT:
A process for heating steel under atmosphere for annealing or hardening wherein the atmosphere is generated by injecting a mixture of dimethyl ether and nitrogen into the furnace.

REFERENCES:
patent: 1817407 (1931-08-01), Brower
patent: 2056175 (1936-10-01), Eberie et al.
patent: 2161162 (1939-06-01), Harsch
patent: 2329896 (1943-09-01), Harsch
patent: 2673821 (1954-03-01), Stutzman
patent: 3201290 (1965-08-01), Wyss
patent: 4306918 (1981-12-01), Kaspersma et al.
patent: 4415379 (1983-11-01), Stanescu et al.
patent: 4472209 (1984-09-01), Langerich et al.

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