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AssigneeGranges Myby AB
InventorsGoran Gemmel, Christer Aslund
Estimating the term…
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.
A process for the production of sheet and strip from ferritic, stabilised, stainless chromium-molybdenum-nickel steels which are hot-rolled in the form of cast blocks to form heavy plate or crude strip and subsequently cold-rolled to the required thickness, characterised in that 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 quenched with water to a temperature slightly below 450.degree. C. and is then subsequently annealed to a temperature above 850.degree. C., the annealing step being followed by rapid cooling from temperatures above about 850.degree. C. to temperatures below 500.degree. C.
Process for the production of strip from ferritic, stabilised, stainless chromium-molybdenum-nickel steels with nickel and molybdenum contents of up to about 5%, wherein the cast heavy plate is hot-rolled to a thickness of about 5 mm and the crude strip produced in this way is subsequently cold-rolled to the required thickness, the hot-rolled crude strip being rolled into a coil and unrolled again when being cold-rolled, characterised in that the cast heavy plate is hot-rolled, at a temperature of about 1200.degree. C., in one pass to a thickness of about 5 mm and the crude strip produced in this way, after having emerged from a hot rolling stand is immediately rapidly quenched with water from a final temperature above about 850.degree. C. to a temperature slightly below 450.degree. C., is subsequently annealed and then is cold-rolled.
Process for the production of sheet from ferritic, stabilised, stainless chromium-molybdenum-nickel steels with nickel and molybdenum contents of up to about 5%, wherein the cast heavy plate is hot-rolled to a thickness of about 5 mm and the crude sheet produced in this way is subsequently cold-rolled to the required thickness, characterised in that the heavy plate is hot-rolled in one pass at a temperature of about 1200.degree. C. to a thickness of about 5 mm and the crude sheet produced in this way is then removed from a hot rolling stand and immediately rapidly quenched with water from a final temperature above about 850.degree. C. to a temperature slightly below 450.degree. C., is thereafter annealed and then cold-rolled.
Dependencies are inferred from the claim text.