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在热轧带纲机组中间辊道上的轧件,一般厚度为25～60mm。由于在粗轧机组上立辊和水平辊的不均匀压下,往往形成舌形或鱼尾形头尾。这种形状的头尾常给生产带来问题。这是因为,头、尾部温降快,温度低,容易损坏精轧机组的工作辊;舌头或鱼尾状部分经过精轧机组后,产生很大的延伸,极易卡入辊道缝隙造成事故。所以,一般用精轧机组前面的切头飞剪将不规则的头尾切除,形成一个规整的矩形头尾。在过去
Rolling in the middle of the hot rolling belt gang unit, the general thickness of 25 ~ 60mm. Due to the uneven rolling of the roughing rollers and horizontal rollers on the roughing train, tongue-like or fish-tail heads and tails are often formed. This shape of the head and tail often bring problems to production. This is because the head and tail temperature drop, low temperature, easy to damage the finishing mill work roll; tongue or fish tail after the finishing mill group, resulting in a great extension, easy to snap into the roller gap caused by accidents . Therefore, the general use of cutting mill in front of the crop flying shear will be irregular head and tail resection, forming a regular rectangular head and tail. In the past