不锈钢高速连铸中结晶器的热流计算

在高效连铸过程中，结晶器的传热效率起着至关重要的作用。在进行加拿大国家自然科学基金资助的高速连铸的战略性研究项目时，在Ａｔｌａｓ Ｓｔｅｅｌ钢铁公司的方坯连铸机上进行了１次工业试验，目的是研究高速连铸不锈钢时结晶器的热流变化。试验中，结晶器４壁共安装了４２个热电偶。不同工艺条件下的温度信号以１０Ｈｚ的频率记录在计算机中，根据每点的平均温度，针对ＩＨＣＰ（Ｉｎｖｅｒｓｅ Ｈｅａｔ Ｃｏｎｄｕｃｔｉｏ

Heat flux calculation in high speed casting of stainless steel

Heat transfer in the mould plays a very important role in continuous casting.An industrial plant trial was performed in Atlas Steel in Canada to investigate the thermal response of the mould in high speed casting of martensitic and austenitic stainless steel billets.And thermal response of the mould in the casting of high carbon steel was also recorded for comparison.A total of 42 thermocouples was installed on all the four mould walls.Tempreature signals under different operating parameters were recorded and analyzed. The average temperature down the midface of the mould wall from the measured singles was calculated.A mathematical model has been developed for Inverse Heat Conduction Problem.The details of establishment of the model are discussed.And the model is successfully employed to determine mould heat flux profiles down the top of the mould in high speed casting of stainless steel billets from thermocouple measurements.Heat flux distributions for different steel grades and casting speeds were calculated.The influence of casting speed and steel grades on the heat transfer in the mould is discussed.