论文部分内容阅读
TMCP工艺是通过控轧技术和控冷技术的结合,在线精确控制显微组织,从而获得优越机械性能的钢材制造技术体系。JFE自1980年在西日本制铁所首次成功的将厚板在线加速冷却装置(OLAC)应用到工业化生产以来,一直致力于提高TMCP水平。1998年,能够以接近水冷理论极限的最高冷却速度进行均匀加速冷却的Super-OLAC(超速加速冷却装置)开发成功并投入运行。2004年,在世界上率先投入使用了在线感应加热装置(HOP,在线热处理工艺)。通过这两种工艺的组合,使淬火-回火工艺生产的高强钢的显微组织细化,从而达到高性能化,并且进一步发现了中途停止冷却,然后再次加热的这种传统工艺从未设想过的热处理过程来控制显微组织的新方法,应用此方法正在积极开发新产品。对TMCP组织控制技术基础及TMCP的最新进展和厚板产品的高性能化进行了阐述。
TMCP process is a combination of controlled rolling and controlled cooling technology, on-line precise control of the microstructure to obtain superior mechanical properties of steel manufacturing technology system. JFE has been working to improve the TMCP level since 1980 when it started the first successful application of OLAC to industrialized production. In 1998, the Super-OLAC (Super Speed Accelerated Cooling Unit), which was able to perform uniform accelerated cooling at the maximum cooling rate approaching the theoretical limit of water cooling, was successfully developed and put into operation. In 2004, the world took the lead in the use of the online induction heating device (HOP, online heat treatment process). Through the combination of the two processes, the microstructure of the high-strength steel produced by the quenching-tempering process is refined to achieve high performance, and further the discovery that such a conventional process of stopping the cooling halfway and then reheating has never been envisaged Over the heat treatment process to control the new method of microstructure, using this method is actively developing new products. The basis of TMCP organization control technology and the latest progress of TMCP and the high performance of plate products are described.