Study on Cooling Uniformity for the Accelerated Cooling Process in Hot Rolled Steel Plate

摘要

Tho thermomechanically controlled process (TMCP) is an already standard method for producing high strength steel in modern plate mill. It is generally accepted that cooling uniformity of accelerated cooling is one of the most important factors that affects the qualities of TMCP plate. Both mechanical properties and flatness may be significantly deteriorated if the cooling uniformity was not well controlled. Consequently, many mill engineers were keenly interested in precise prediction of the thermal behavior occurring on the accelerated cooling zone. Computer modeling for above scenario, however, is a difficult task, due to great computational efforts of the three dimensionality and the changing thermal boundary conditions during the process. Therefore, present work was focused on the development of a highly efficient thermal model, being capable of simulating corresponding process thermal boundary conditions. The numerical procedure is based on the finite volume discretization of 3-D transient heat equation and a high performance matrix solver. To demonstrate the accuracy and applicability of proposed method, validation and process simulation result will also be addressed in this paper.