Introduction

As one of the greatest achievements in the steel industry in the twentieth century (Herman in Ironmaking Steelmaking 28:159–163, 2013; Cornet and Herman in Method of making a multiphase hot rolled steel strip: US, US6821364 B2, 2004; Endo and Nakata in JFE Technical Report, 2015; Houyoux et al. in Revue de Metallurgie, Cahiers d’Informations Techniques (France), 97:58–59, 1997; Xu in Shanghai Metals 24:1–10, 2002), Thermo-Mechanical Controlled Processing (TMCP), i.e., controlled rollingControlled rolling and controlled coolingControlled cooling technology, is one of the most widely used key process technologies in the field of hot rolled steel materialsSteel material and plays the most important role in the regulation of the microstructure and properties of materials. It is precisely because of TMCPThermo-mechanical control process (TMCP) technology that the steel industry can continuously provide more and more useful steel materialsSteel material to society, supporting the development and progress of human society. Since Japan NKK Fukuyama Steel Works first configured and used On-Line Accelerated Cooling (OLAC) (Omat et al. in NKK Technical Review, 2003) for the heavy platePlate/Strip shape production line and promoted the industrializationIndustrialization of TMCPThermo-mechanical control process (TMCP) technology in 1980, TMCPThermo-mechanical control process (TMCP) technology represented by laminar coolingLaminar cooling has promoted the development of traditional controlled rollingControlled rolling and controlled coolingControlled cooling technology for nearly 30 years.