Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent
1980-09-16
1982-09-14
Dean, R.
Metal treatment
Process of modifying or maintaining internal physical...
Chemical-heat removing or burning of metal
148 12C, 148 123, 148156, C21D 948
Patent
active
043493939
ABSTRACT:
Metal sheet (cold-rolled steel sheet) contaminated with rolling oil is heated at a temperature higher than its recrystallization temperature in a naked flame furnace, e.g. of the incomplete combustion type. The heated sheet is then rapidly cooled by contact with an aqueous medium. The resulting sheet has considerably improved suitability for phosphate coating and painting, compared with sheet which is annealed after alkaline degreasing. The sheet is preferably treated with formic acid.
REFERENCES:
patent: 3052014 (1962-09-01), Falcon
"Compact Furnace Anneals Strip", from The Iron Age, Feb. 26, 1959.
"Lines Anneal Fast without Soaking", from Steel, Oct. 14, 1957.
Economopoulos Marios
Paulus Philippe
Centre de Recherches Metallurgiques--Centrum voor Research in de
Dean R.
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