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丝攻是一种复杂的切削刀具,它的切削能力,是在保持心部韧性条件下,由切削部分的硬度来决定的。一般大量生产的丝攻,都采用高速钢来制造,但丝攻的切削速度并不很高,高速钢的红热硬性不能发挥;如果热处理车间没有适当的仪表设备,还不能把它处理好。所以有必要选择适当的合金钢来作丝攻的材料。在低合金钢中,铬钨锰钢可以采用,但价格比较贵,不容易购买。目前苏联大量采用的高碳铬矽钢(9XC)是比较理想的丝攻材料,经过我们试用,的确可
Wire tapping is a complex cutting tool, its ability to cut, is to maintain the toughness of the heart under the conditions of the cutting part of the hardness to decide. Generally mass-produced wire tapping, are made of high-speed steel, but the wire tapping cutting speed is not high, high-speed steel red hot hard can not play; if the heat treatment plant without proper instrumentation, still can not handle it well. Therefore, it is necessary to select the appropriate alloy steel for wire tapping materials. In low-alloy steel, chromium tungsten manganese steel can be used, but the price is more expensive, not easy to buy. At present, a large number of high-carbon chromium silicon steel (9XC) used in the Soviet Union is an ideal wire-tapping material. After our trial,