Modeling Transient Jet Impingement Cooling of Moving Hot Steel Plates

Abstract

Accelerated cooling (ACC) is one of the key processing steps in the production of Advanced High Performance Steels. In order to obtain thermo-mechanically controlled processed (TMCP) steel products with desired microstructures and mechanical properties, it is necessary to properly adjust the processing parameters of the cooling facility, and therefore it is critically important to quantify the physical process of heat removal by applying water jets on the hot surface of steel. In the present study we propose a mechanistic model for top jet cooling of a moving plate with circular and planar nozzles. The simulation model has been developed based on the extensive experimental database generated with pilot scale runout table tests, and it provides a potentially powerful tool for simulation of cooling of steel strips and plates over the entire length of the cooling facility. KEY WORDS: steel; jet impingement boiling; transient heat transfer; temperature modeling; accelerated cooling; runout table.

Cooling pattern on the run-out table of a hot rolling mill for an HSLA steel: a finite element analysis

“…The boiling mechanism is the most profound heat transfer mechanism that is activated in ROT cooling due to its immense heat transfer coefficient in any boiling regime [17,18]. In this paper, the HTC of parallel flow and impingement zones counts on the boiling phenomena as Xu [13] and some other researchers had the same approach [19][20][21][22][23][24][25][26].…”