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生产优质均匀的热轧带钢的关键之一是,要求轧机工作辊拥有专门的质量保证体系,以便使轧辊凸度控制在最佳范围内。最近,赫施钢铁公司研究成功一种控制轧辊凸度的新方法-辊芯差温加热法。这一方法已在热轧精轧机组支承辊上投入使用。在常规轧制过程中,所轧制的高温金属对轧辊构成了热源,而冷却水则是吸热剂。一般来说,在热轧带钢轧机上轧制5～7块钢坯后,轧辊温度升高,形成热凸度,办法是通过调节冷却水流量来弥补这种热影响;而在冷轧机上,人们习惯采用变化工艺冷润液控制辊型。此外,也曾讨论过使用差温加热轧辊来控制轧辊凸度的做法。
One of the keys to producing high-quality, uniform hot-rolled strip is to require that the mill work rolls have a dedicated quality assurance system to optimize roll crown control. Recently, Herz Steel successfully studied a new method of controlling roll crown - roll core temperature difference heating method. This method has been put into use in the hot rolling mill finishing roll. During conventional rolling, the hot rolled metal heats up the roll while the cooling water is a heat sink. In general, rolling hot strip mill on the 5 to 7 billet, the roll temperature increases, the formation of thermal crown, by adjusting the cooling water flow to compensate for this thermal impact; and in the cold rolling mill, People are accustomed to using a change of process coolant control roller type. In addition, the use of a differential temperature heated roll to control roll crown has also been discussed.