Metal deforming – With cleaning – descaling – or lubrication of work or product – Mechanical cleaning
Patent
1976-01-30
1978-01-10
Larson, Lowell A.
Metal deforming
With cleaning, descaling, or lubrication of work or product
Mechanical cleaning
72129, 72160, B21D 102
Patent
active
040672158
ABSTRACT:
Hot rolled steel plate having an absolute warp value of less than 20mm for a 3m length of cut plate and not subjected to deterioration of mechanical properties, is formed by subjecting steel strip from a hot rolled coil to a strong cold leveling to provide a maximum surface strain .epsilon. max within the range of 0.60% .ltoreq. .epsilon. max .ltoreq. 3.0%. The steel strip may then be subjected to a light cold leveling for slowly diminishing the surface strain. Further, after the straightening or leveling operation the plates are inspected, coated with a rust preventative, marked with identifying indicia and directed to a piling device. The inventive and novel method and apparatus of the present invention for manufacturing thick steel plate from hot rolled coil, which has not been previously successful, is extraordinarily excellent in amelioration of productivity compared with any of the conventional thick steel plate producing methods.
REFERENCES:
patent: 2190986 (1940-02-01), Hudson
patent: 2327103 (1943-08-01), Gude
patent: 2963070 (1960-12-01), Maust
patent: 3020624 (1962-02-01), Menster
patent: 3156288 (1964-11-01), Lawson
patent: 3180122 (1965-04-01), Evans et al.
patent: 3253445 (1966-05-01), Franek
patent: 3312094 (1967-04-01), Birkle
Nakajima Tsuyoshi
Shigesawa Toshio
Larson Lowell A.
Nippon Steel Corporation
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