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要进一步提高工具使用寿命,除可重新更换工程材料或改革零件结构外,更重要的应通过实施热处理新工艺这一手段,使之改变组织获得良好的机械性能。共大标准件厂成批生产紧固件,如对φ8、φ10mm 的螺栓主要通过冷镦制成。由于产量大,由此对冷镦模具也提出了更高的要求。冷镦顶端模采用的材料为 T10A 钢,按原常规热处理工艺是:经预热后在780℃盐浴炉中
In order to further improve the service life of the tool, it is more important to change the organization to obtain good mechanical properties by implementing the new heat treatment process, in addition to being able to replace the engineering materials or reforming the structure of parts. A total of standard factory mass production of fasteners, such as φ8, φ10mm bolts mainly through cold heading made. Due to the large output, cold heading of the mold also put forward higher requirements. Cold forging the top die is made of T10A steel, according to the original heat treatment process is: preheated in 780 ℃ salt bath furnace