| 摘要 |
PURPOSE:To eliminate a soln. heat treatment stage when a hot rolled austenitic stainless steel is manufactured, by carrying out hot rolling at a specified temp., rapid cooling at a specified cooling rate and coiling at a specified temp. CONSTITUTION:When austenitic stainless steel is hot rolled to manufacture a steel strip, hot rolling is finished at >=850 deg.C to inhibit the precipitation of carbide and to prevent the sensitization of the steel strip. The steel strip is rapidly cooled at >=10 deg.C/sec cooling rate immediately after hot rolling, and it is coiled at <=500 deg.C. During slow cooling after coiling, no carbide is precipitated and the steel strip is not sensitized, so soln. heat treatment for converting precipitated carbide into a solid soln. is made unnecessary, and a hot rolled austenitic stainless steel strip of high quality can be manufactured at a low cost. |
