图1所示为切名片纸的切卡器凹模,材质为45钢,硬度要求50～55HRC,热处理后凸凹模装配间隙要求0.01～0.02mm。由于凹模整体热处理收缩变形在0.10～0.20mm范围内,给后序钳工研磨装配带来困难,为此我们试用高频局部淬火。 1.工艺分析 由于凹模使用部位是刃口,且根据使用情况淬硬不需太深。采用高频刃口局部加热淬火既可满足淬硬层深 Figure 1 shows the name card cut paper cutter concave die, made of 45 steel, hardness requirements of 50 ~ 55HRC, after heat treatment convex mold assembly clearance requirements of 0.01 ~ 0.02mm. As the overall die heat shrinkage deformation in the range of 0.10 ~ 0.20mm, post-fitter grinding assembly difficult, for which we try high-frequency local quenching. 1. Process Analysis As the die is the use of cutting edge, and according to the use of hardened not too deep. The use of high-frequency cutting edge heating can not only meet the hardened layer deep