[美刊《钢铁生产者》报道] 近年来,对采用热机械加工技术,包括在线热处理,来简化无缝钢管生产已进行了大量的研究。 由于无缝钢管生产工艺中的大部分变形发生在非再结晶温度以上,所以钢板轧机所用的通常的控制轧制技术是不适用的。在无缝钢管轧制条件下,控制轧制条件下的再结晶是细化奥氏体晶粒的有效方法。此外,在钢管轧机和定径机之间通常设置一个炉子。这就意味着,通过将钢管在加热到常用的热定径 [US Steel Producer Report] In recent years, a great deal of research has been conducted on the use of thermomechanical processing techniques, including on-line heat treatment, to simplify seamless steel pipe production. Since most of the deformation in the seamless pipe production process occurs above the non-recrystallization temperature, the conventional controlled rolling technology used in plate mills is not applicable. Recrystallization under controlled rolling conditions is an effective way to refine austenite grains in seamless steel tube rolling. In addition, a furnace is usually provided between the tube rolling mill and the sizing mill. This means that by heating the pipe to the usual heat setting