Method for the production of black plate with improved surface l

Details Method for the production of black plate with improved surface l Method for the production of black plate with improved surface l

1975-12-22

1976-11-30

Gilden, Leon

Compositions

Radioactive compositions

Nuclear reactor fuel

72 42, 252 493, B21D 5110, B21B 4502

Patent

active

039942520

ABSTRACT:
To prevent galling during the drawing and ironing process, black plate is provided with an economical coating for improving surface lubricity. Cold-reduced strip is rinsed with a solution containing soluble salts of manganese and sulfur, e.g. MnSO.sub.4 ; the strip is dried and then heated to above 800.degree. F in a reducing atmosphere, such as HNX. Heating is conducted at a temperature sufficient to reduce the sulfates and provide a surface coating of MnS in which the surface sulfur concentration is in excess of 0.5%.

REFERENCES:
patent: 2182304 (1939-12-01), Rolle
patent: 2231228 (1941-03-01), Singer
patent: 2406039 (1946-08-01), Roedel
patent: 3125519 (1964-03-01), Grave et al.
patent: 3215630 (1965-11-01), Compton et al.
patent: 3360157 (1967-12-01), Bolt et al.
patent: 3577753 (1971-05-01), Shah

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