Method of manufacturing thick steel product of high strength and

Details Method of manufacturing thick steel product of high strength and Method of manufacturing thick steel product of high strength and

1997-03-14

1999-11-23

Ip, Sikyin

Metal treatment

Process of modifying or maintaining internal physical...

Utilizing disclosed mathematical formula or relationship

148648, 148654, C21D 802

Patent

active

059893664

ABSTRACT:
A method of manufacturing a thick steel product of high strength and high toughness having excellent weldability with minimal variation of material properties, comprises heating a steel raw material to the temperature of Ac.sub.3 to 1350.degree. C., hot rolling and then cooling at the cooling rate of 10.degree. C./sec. or less. The steel raw material has the following composition:

REFERENCES:
patent: 4219371 (1980-08-01), Nakasugi et al.
patent: 4521258 (1985-06-01), Tamehiro et al.

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