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型钢的卷弯,可采用手工或在专用型钢卷弯机上进行。这两种方法各有利弊。手工卷弯,虽然简便可行,但需要在胎具上热弯,这就恶化了劳动条件,工件质量亦难保证:用型钢卷弯机,虽然效率高、质量可靠,但对一般中小型厂矿来说,这种专用设备的利用率不高,如果利用普通三辊卷板机卷弯型钢,其效率、加工质量与专用设备相差无几。而且,可以充分利用现有设备,减少投资。利用三辊卷板机卷弯型钢,需要在卷板机的辊筒上套上辅助套筒(不然的话,由于型钢的边较窄,将使辊筒形成局部磨损)。为了便于装卸,辅助套筒制成对
Bending bending steel, can be used by hand or in a special steel bending machine. Both methods have their pros and cons. Manual winding, although simple and feasible, but the need to reheat the tire, which worsens the working conditions, the quality of the workpiece is difficult to guarantee: with steel bending machine, although efficient, reliable, but the general small and medium factories to mine Said that the utilization of such special equipment is not high, if the use of ordinary three-roll coiling machine rolled steel, its efficiency, processing quality and special equipment is almost the same. Moreover, you can make full use of existing equipment to reduce investment. With a three-roll coiling machine, it is necessary to put an auxiliary sleeve on the roll of the coiling machine (otherwise the partial wear of the roll will occur due to the narrower profile). In order to facilitate loading and unloading, auxiliary sleeves made of pairs