Abstract：The single line slab caster of Benxi Steel is introduced from Danieli company, which is established on the December 4th of 2008. The mould level is controlled by NKK. The reasons for mould level unstable waves during casting ULC steel grades are introduced during the production of ultra-low carbon steel by No.7 continuous casting machine, and the mould level control accuracy is increased by some measures, such as improving NKK level process and tuning its control PID parameters and optimizing mould flow mode. After that, mould level control accuracy for wide automobile plate production and its coil final quality are increased. The problems of random travelling waves are solved and eliminated, and the rolling yield of wide width automobile plate is greatly increased.
2020, Vol. 39 
