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采用计算机逆向工程技术,建立了GH99失效模具再制造模型,并进行了模具再制造试验和应用验证。优选超音速火焰喷涂法进行GH99失效模具的再制造,采用的复合粉末化学成分为:25%Cr+10%V+10%W+15%Ni+39%Co+0.5%TiC+0.5%RE。再制造后的模具表面硬度增加9%,磨损体积减小84%,单位面积质量增重下降73%,热疲劳级别从17变为3,模具的抗氧化性显著提高,通过该模具再制造技术使失效模具满足了使用要求。
Using computer reverse engineering technology, GH99 mold remanufacturing model was established, and the mold remanufacturing test and application verification were carried out. The GH99 failure mold is preferably remanufactured by supersonic flame spraying using a composite powder chemistry of 25% Cr + 10% V + 10% W + 15% Ni + 39% Co + 0.5% TiC + 0.5% RE. After remanufacturing, the surface hardness of the mold increases by 9%, the wear volume decreases by 84%, the mass weight gain per unit area decreases by 73%, the thermal fatigue level changes from 17 to 3, the oxidation resistance of the mold increases significantly. Through the mold remanufacturing technology The failure of the mold to meet the requirements.