带挤压侧隙的金属冷切圆锯片的开发

DEVELOPMENT OF ROUND METAL COLD CUTTING SAW BLADE WITH PRESSED SIDE GAP

介绍了金属冷切圆锯片的用途以及在锯切大型H型钢时存在的问题。针对现有的双斜面侧隙锯片和复合侧隙锯片侧隙加工时人工、机械消耗多,研制了一种新型带挤压侧隙的金属冷切圆锯片。使用专用机床和模具对锯片齿尖进行加热并挤压出侧隙,或者直接在常温状态下挤压侧隙的方法加工出锯片侧隙。经过国内某大型H型钢厂使用验证,带挤压侧隙金属冷切圆锯片减少了轧件断面与锯片侧面的摩擦,明显降低锯切功率消耗,使用效果与现有的双斜面侧隙锯片和复合侧隙锯片相当,具有广泛的应用价值和推广前景。

It is introduced the usage of round metal cold cutting saw blade and its problem in sawing large - scale H section steel. A new kind of round metal cold cutting saw blade with pressed side gap is developed to solve the problem of too much consumption in man and machine in working of original double oblique plane side - gap saw sheet and complex side - gap saw sheet. The saw sheet side - gap is worked out by heating and pressing on tooth tip with special -purpose machine and mould, or directly pressing under normal tem- perature. With use examination in some large H - section steel plant at home, It is proved that this kind of saw blade reduces friction between rolling piece cross section and side surface of saw, obviously reduces sawing power, has same effect with the present used double oblique plane side - gap saws and complex side - gap saws, has a broad application and spreading prospect.