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机械加工过的低中碳钢或低中碳合金钢的模刃,经碳氮共渗或渗碳并淬火回火后,在模刃表面的各种碳化物,特别是各种氮化物,具有极高的硬度和耐磨性。它们均匀地分布在基体上,比用高碳钢或高碳合金钢做的冷切模刃具有更高的硬度和耐磨性。从渗层向里,则是强韧的低碳马氏体基体,它能起支撑和传递动力的作用,而且在使用中也不易被撑裂或折断。模刃在热处理过程中,还不容易变形超差,更不会开裂。即使变形超差了,还可以用装配时的研磨或淬火后的校直来纠正。
Mechanical processing of low carbon steel or low carbon steel die edge, after carbonitriding or carburizing and quenching and tempering, in the mold edge surface of various carbides, especially various nitrides, with High hardness and wear resistance. They are evenly distributed on the substrate and have higher hardness and wear resistance than cold-forged dies made of high-carbon or high-carbon alloy steel. From the infiltration layer to the inside, it is a tough low-carbon martensite matrix, which can play a supporting and transmitting the role of power, but also in use is not easy to be cracked or broken. Die edge in the heat treatment process, not easy to deformation tolerance, but will not crack. Even if the deformation over tolerance, you can also use the assembly of the grinding or quenching after straightening to correct.