上海丰达铸造厂最近试制成功冷硬铸铁锥形合箱销新工艺制成的合箱销(冷硬铸铁锥形合箱销模具示意图见下图),用它代替常见的铝质合箱销,具有很多优点。铝质合箱销的硬度低,易磨损,使用寿命短;铸铁企业自制较麻烦,制作周期较长;误入大炉会影响铁水质量,磁选设备对它不起作用,易误入设备造成事故。冷硬铸铁合箱销的表面光洁度好,硬度特高,耐磨,使用寿命长;成本仅为铝质合 Shanghai Fengda Foundry successfully trial chilled cast iron taper together box pin new technology made of co-box pin (chilled cast iron cone co-box mold schematic diagram below), use it to replace the common aluminum box pin , Has many advantages. Aluminum alloy box pin low hardness, easy to wear, short service life; cast iron business more trouble, longer production cycle; into the large furnace will affect the quality of hot metal, magnetic separation equipment does not work on it, easily into the equipment caused ACCIDENT. Chilled cast iron box surface finish, high hardness, wear-resistant, long service life; the cost is only aluminum