公开(公告)号：US4720307A

公开(公告)日：1988-01-19

申请号：US847288

申请日：1986-04-02

申请人： Kazuaki Matsumoto ,  Seishi Tsuyama ,  Hisatoshi Tagawa ,  Yoshitaka Yamasaki

发明人： Kazuaki Matsumoto ,  Seishi Tsuyama ,  Hisatoshi Tagawa ,  Yoshitaka Yamasaki

IPC分类号： C21D8/00 ,  C21D7/14

CPC分类号： C21D8/00

摘要： A steel which is excellent in mechanical properties after a warm working process is produced by specifying a chemical composition as claimed, subjecting the steel to a controlled rolling under conditions at temperatures of not more than 900.degree. C. and accumulated reduction of more than 30%, leaving it, after the controlled rolling, as it is in the air or performing it to an accelerated cooling wherein the steel is cooled at rate between the air cooling and 100.degree. C./sec until temperatures where a transformation finishes, subsequently reheating the steel to ranges between 400.degree. C. and 750.degree. C., and carrying out the warm working thereon instantaneously or after the air cooling at the temperatures between 250.degree. C. and 750.degree. C.

摘要翻译： 通过规定所要求的化学组成来制造温加工后的机械性能优异的钢，在不高于900℃的温度条件下对钢进行受控轧制，并且累积减少30％以上 在受控轧制之后，将其留在空气中或将其进行加速冷却，其中钢在空气冷却和100℃/秒之间的速率下冷却直到转变完成的温度，然后再加热 钢在400℃至750℃的范围内，并在250℃至750℃的温度下瞬间或空气冷却后进行温热加工。