高速钢碳化物偏析的测定 (一)测定碳化物偏析的意义和目的: 高速钢中由于含有W、Cr、Mo、V等较少的合金元素。含量较高,有足够的红硬性,以满足高速切削的要求,这些合金元素形成大量的碳化物,碳化物分布呈带状、网状、大颗粒、大块堆集,使钢材各向异性,强度,塑性下降,以下谈谈碳化物偏析对工具的锻造、热处理和切削寿命的影响。 1.偏析对锻造的影响: Determination of High Speed ​​Steel Carbide Segregation (A) Determination of the significance and purpose of carbide segregation High speed steel due to containing W, Cr, Mo, V and other less alloying elements. High content, sufficient red hardness, to meet the requirements of high-speed cutting, the formation of a large number of these alloying elements of carbides, carbide distribution was banded, reticular, large particles, bulk stacking, the steel anisotropy, strength , Plasticity decreased, the following talk about carbide segregation on the tool forging, heat treatment and cutting life. 1 segregation forging impact: