苏联工业普遍地利用了硬质合金的高度切削性能来进行高速切削金属,但是用硬质合金铰刀来高速加工精密而又光滑的孔,则还不广泛。甚至在先进的工厂里,这种铰刀主要还是用相当低的切削速度(15-40公尺/分)来加工铸铁孔。 用硬质合金铰刀铰钢孔,没有收到良好的效果,以致许多工业的 The Soviet industry generally uses the high cutting performance of cemented carbide for high-speed cutting of metals, but the use of cemented carbide reamers for high-speed machining of fine and smooth holes is not widespread. Even in state-of-the-art factories, the reamers are mainly used to machine cast iron holes at fairly low cutting speeds (15-40 m / min). Reamers with carbide hinged steel, did not receive good results, so many industrial