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高速工具钢是一种多元素的高合金钢,主要的合金元素为碳、钨、铬、钒等。它的常用牌号是W18Cr4V。由于钢中含有较多的钨、铬元素,所以热处理后能获得高的淬透性和热硬性,切削时刀具温度虽高至600℃左右,仍能保持良好的切削性能,而一般炭素工具钢及合金工具钢,切削温度达200°～300℃时,硬度即显著降低,不能继续切削,所以高速工具钢广泛用来
High-speed tool steel is a multi-element high-alloy steel, the main alloying elements of carbon, tungsten, chromium, vanadium and so on. Its common brand is W18Cr4V. As the steel contains more tungsten, chromium, so after heat treatment to obtain high hardenability and thermosetting, cutting tool temperature although high to about 600 ℃, still maintain good cutting performance, and the general carbon tool steel And alloy tool steel, the cutting temperature of 200 ° ~ 300 ℃, the hardness is significantly reduced, can not continue cutting, high-speed tool steel is widely used