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冷锻模具是在加工压力和摩擦力很高的苛刻条件下工作的,如用多工位冷镦机进行缩径和挤压,当材料的变形程度ε达40％时,缩径模和挤压模所承受的压力达230～250kgf/mm~2。对冷锻模具的失效原因进行分析,根据失效原因采取预防措施,能有效地提高经济效益。冷锻模具的使用寿命不仅取决于模具本身,如模具的结构设计、材料选择、改锻、热处理及机械加工(包括电加工、研磨)的质量,而且还取决于被加工材料的特性、产品的形状及其变形程度的高低、模具的安装精度、冷锻机床的精度、模具工作时的润滑条件及操作者
Cold forging dies work under severe conditions of high processing pressure and high friction, such as reducing and squeezing with a multi-station cold heading machine. When the degree of deformation ε of the material reaches 40% Press the pressure of 230 ~ 250kgf / mm ~ 2. Analysis of the causes of the failure of cold forging die, according to the failure to take preventive measures, can effectively improve economic efficiency. Cold forging die life depends not only on the mold itself, such as mold structure design, material selection, change forging, heat treatment and machining (including electrical processing, grinding) quality, but also depends on the characteristics of the material being processed, the product The shape and the degree of deformation, the installation accuracy of the mold, the precision of the cold forging machine tool, the lubrication conditions of the mold and the operator