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我厂生产的12型拖拉机叉速器半轴齿轮模具(图1),用3Cr2W8V钢制造,要求硬度HRC48-52。模具毛坯热处理后再电火花加工
I plant the 12-type tractor fork gear semi-axle gear mold (Figure 1), with 3Cr2W8V steel, the hardness of HRC48-52. Die blank after heat treatment and then EDM