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介绍采用热化学共渗法对硬质合金拉丝模芯进行超硬化处理，以提高其表面硬度的方法。通过生产性试验探索出具有实用价值的共渗剂配方及最佳的共渗工艺。
The method of using thermochemical co-infiltration method to super-harden the hard alloy wire-drawing mold core to improve its surface hardness is introduced. Through the production test to explore a useful osmotic agent formula and the best osmosis process.