Process for the production of sheet and strip from ferritic, sta

Details Process for the production of sheet and strip from ferritic, sta Process for the production of sheet and strip from ferritic, sta

1979-04-17

1981-08-18

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

75128W, 148 37, 148135, C21D 802, C22C 3844

Patent

active

042844398

ABSTRACT:
PCT No. PCT/EP78/00011 Sec. 371 Date Apr. 17, 1979 Sec. 102(e) Date Apr. 17, 1979 PCT Filed Aug. 16, 1978 PCT Pub. No. WO79/00100 PCT Pub. Date Mar. 8, 1979
A process for the production of sheet an strip from ferritic, stabilized, stainless chromium-molybdenum-nickel steels by hot-rolling of cast blocks to form heavy plate or crude strip and subsequent cold-rolling to the required thickness, wherein the blocks are hot-rolled at temperatures above about 850.degree. C. to form heavy plate or crude strip and, immediately afterwards, the heavy plate or crude strip thus formed is suddenly (rapidly) quenched with water to a temperature just below 450.degree. C. and subsequently annealed, the annealing step being followed by sudden (rapid) cooling from temperatures above about 850.degree. C. to temperatures below 500.degree. C.

REFERENCES:
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patent: 3689325 (1972-09-01), Hayden, Jr. et al.
patent: 3837847 (1974-09-01), Bieber
patent: 3856515 (1974-12-01), Brandis et al.
patent: 3865644 (1975-02-01), Hellner et al.
patent: 3926685 (1975-12-01), Gueussier et al.
patent: 3929520 (1975-12-01), Hellner et al.
patent: 4010049 (1977-03-01), Rarey
patent: 4055448 (1977-10-01), Fujikura et al.
patent: 4119765 (1978-10-01), Pinnow et al.
patent: 4155752 (1979-05-01), Oppenheim

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