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一、问题的提出我厂生产线上使用的关键工装穿孔轮(图1所示),轮周均匀布满4400只尖利的细牙,轮子被安装在穿孔机(图2所示)上,开机使用时,厚度为0.1毫米的冷轧钢带从两轮中间通过,从而铜带上面被穿出整齐排列的0.15×0.3毫米~2的长方形小孔。根据穿孔轮的工作条件,要求轮牙硬度高、耐磨性好、冲击韧性高,表面绝不允许有氧化或脱碳现象发生。轮子采用GCr15滚珠轴承钢制造,一直采用氰化淬火工艺处理(用外热式氰化钠坩埚浴炉,将100%剧毒的氰化
First, the problem put forward I plant the production line using the key tool perforation wheel (Figure 1), the wheel circumference evenly covered with 4400 sharp teeth, the wheel is installed in the piercing machine (Figure 2), boot , A cold-rolled steel strip having a thickness of 0.1 mm was passed through the middle of the two wheels so that the upper surface of the copper strip was punched through a rectangular hole of 0.15 × 0.3 mm 2 neatly arranged. According to the perforation wheel working conditions, the requirements of high hardness teeth, wear resistance, high impact toughness, the surface must not allow oxidation or decarbonization occurs. Wheels made of GCr15 ball bearing steel, has been using cyanidation quenching process (with an external thermal sodium cyanide crucible bath furnace, the 100% highly toxic cyanide