Research and Development > JFE TECHNICAL REPORT >JFE TECHNICAL REPORT No.20 March 2015 - Special Issue on “Steel Plates” and “Welding and Joining” > Development of Thermo-Mechanical Control Process (TMCP) and High Performance Steel in JFE Steel

No.20 March 2015 - Special Issue on “Steel Plates” and “Welding and Joining”

Development of Thermo-Mechanical Control Process (TMCP) and High Performance Steel in JFE Steel

ENDO Shigeru      NAKATA Naoki

Abstract

Thermo-mechanical control process (TMCP) is one of microstructural control techniques, combining controlled rolling and controlled cooling, to obtain excellent properties of steel plates, such as high strength, excellent toughness and weldability. JFE Steel has continued efforts to develop TMCP technologies, ever since JFE Steel started operation of the accelerated cooling equipment, OLAC^TM (On-Line Accelerated Cooling) , in the plate mill at West Japan Works (Fukuyama) in 1980, which was the first industrial accelerated cooling system in the world. OLAC^TM has continued to evolve to Super-OLAC^TM and Super-OLAC^TM-A, in 1998 and 2011. In 2004, HOP^TM (Heat-treatment On-line Process) was also installed in the plate mill at Fukuyama. Super-CR enabling quite unique cooling patterns during controlled rolling has also installed at East Japan Works (Keihin) in 2009. This paper describes features of those leading facilities and the recent development in TMCP with some examples of new products in JFE Steel.

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