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在计算轧制发热量时,必须事先知道轧制时轧件和轧辊之间的摩擦功率。因为总有一部分轧制功率转化为热量,所以也可从轧制功率推算出摩擦功率。现取轧辊的回转功率为P,前、后张力卷取功率分别为B和F,由塑性变形而引起的内部摩擦功率为Q,轧辊和材料的摩擦功率为W,根据输入、输出的关系得: P+F=Q+W+B 式中B、F、Q值通过计算可容易求得,这样,P和W的关系也自然就知道了。可是,
In calculating the rolling calorific value, it is necessary to know in advance the frictional power between the rolling stock and the rolling stock during rolling. Since there is always a portion of the rolling power converted to heat, the friction power can also be deduced from the rolling power. Now take roll rotation power P, before and after the take-up of the tension were B and F, respectively, due to the plastic deformation of the internal frictional power Q, roll and material frictional power W, according to the relationship between input and output : P + F = Q + W + B Where B, F, Q values can be easily calculated by calculation, so that the relationship between P and W is also natural to know. but,