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CSTC of High Strength Steel for ROT Process in Hot Strip Mills

열간압연 ROT에서 고강도강의 CSTC 개발

  • Published : 2008.02.01

Abstract

This paper proposes a cooling stop temperature control(CSTC) concept which aims at obtaining the uniform temperature and quality of the material along the longitudinal and lateral direction of the strip. The CSTC is designed using the experimental CCT(Continuous Cooling Transformation), TTT(Time Temperature Transformation) curves and the temperature control model by the heat transfer governing equation, and the temperature control simulator. The cooling pattern and the rolling speed can be solved by the CSTC. It is shown through the field test of the hot strip mill of POSCO that the phase transformation ratio of the high carbon steel is considerably improved by the proposed temperature control.

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Cited by

  1. Independent Cooling Controller for Temperature Control of High Strength and Atmosphere Corrosion Resisting Steel in Hot Strip Mills vol.39, pp.3, 2015, https://doi.org/10.3795/KSME-A.2015.39.3.327