METHOD FOR COLD ROLLING OF SEMISTABLE AUSTENITIC STAINLESS STEEL PLATE

摘要

PROBLEM TO BE SOLVED: To improve rolling efficiency, and to reduce a manufacturing cost by performing first pass rolling with a specific draft, and rolling while a plate keeps a specific temperature by working heat with respect to the rolling after a second pass. ;SOLUTION: For instance, the cold rolling is applied to the semistable austenitic stainless steel plate such as SUS 301, SUS 201, etc., by a many times of the pass. At that time, the first pass rolling is performed by the draft in the following range. For the rolling after the second pass, the rolling is performed while the plate keeps the temperature of ≥ Md 30 by the working heat. That is, the draft of the first pass: The draft of which lower limit is the one when a plate temperature after the rolling of the first pass becomes the temperature by the Md30 value obtained from formula: Md30(°C)=497-462(C +N)-9.2Si-8.1Mn-13.7Cr-20(Ni+Cu)-18.5Mo based on the working heat. An upper limit is 13%. Wherein, symbols of element represent the content (unit: wt.%) of each element of the plate.;COPYRIGHT: (C)1999,JPO