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钢结硬质合金是以难熔金属碳化物做硬质相,以钢做粘结相,采用粉末冶金的方法制成的一种新型工具材料。它具有合金工具钢的可机械加工性、可热处理性、可焊接性以及可锻性,同时又有接近硬质合金的高硬度、高耐磨性等一系列优良工艺性能和使用性能。钢结硬质合金热处理工艺参数的确定,和合金钢一样,主要是依据加热、保温和冷却过程中钢基体显微组织的变化,硬质相 WC 与复杂碳化物的溶解与析出,晶粒大小、分布状态的变化。几年来,我厂根据多次热处理工艺试
Steel cemented carbide is made of refractory metal carbide hard phase to steel bonding phase, the use of powder metallurgy method of a new tool material. It has the machinability of alloy tool steel, heat-treatability, weldability and malleability, at the same time have close to carbide high hardness, high wear resistance and a series of excellent performance and performance. The determination of the heat treatment process parameters of the cemented carbide is the same as that of the alloy steel, mainly based on the changes of the microstructure of the steel substrate during heating, holding and cooling, the dissolution and precipitation of the hard phase WC and complex carbides, the grain size , The distribution of the changes. Over the past few years, I plant under several heat treatment process test