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冷卷法兰盘是一种少切削新工艺。它采用扁钢做原料,在自制的法兰盘冷卷机上冷卷之后,经气割(图1)、热平、焊接即可得到法兰盘毛坯。法兰盘毛坯若用钢板气割制造,要浪费2/3的钢材,并且气割下来的毛坯硬度增高,给切削加工造成困难。如果用自由锻造制造,材料利用率虽有所提高,但生产效率仍然很低,并且需要大型的锻压设备。而冷卷法比自由锻造法,可节省材料1/3(材料利用率
Cold-rolled flange is a less cutting new technology. It uses flat steel as raw material, cold roll in the homemade flange coiler, the gas cut (Figure 1), heat flat, welded to get the flange blank. If the rough flange plate manufacturing gas cutting, to waste 2/3 of the steel, and gas cut the rough hardness of the rough, causing difficulties in cutting. If made by free forging, the material utilization rate has improved, but the production efficiency is still low, and the need for large-scale forging equipment. The cold coil method than the free forging method can save material 1/3 (material utilization