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采用短电弧高效加工方式对GH4169镍基高温合金加工,在不同的电源放电参数下观察工件加工表面材料去除率、工件加工表面粗糙度、显微硬度、热影响区等参数分析,并使用SEM设备观察工件加工表面,初步得出在不同加工电源参数下所获得的试件表面质量规律,实验证明:可以寻找到一个到既有较高的材料去除率并可保证较小的热影响区的理想加工电参数点;材料去除率随着电压的降低而降低;工件表面显微硬度在不同加工电压下的变化趋势大体一致;能谱分析表明试件表面合金化程度随着加工电压的升高而升高。通过调整电源参数可以使得短电弧加工GH4169镍基高温合金的方式得到较为满意的表面加工质量。
GH4169 nickel-based superalloy was machined by short-arc high-efficiency machining. The surface material removal rate, surface roughness, microhardness and heat-affected zone of workpiece were observed under different power discharge parameters. SEM and SEM Observe the surface of the workpiece and get the surface quality of the specimen obtained under different processing power parameters. The experiment proves that it is possible to find an ideal to have a higher material removal rate and ensure a smaller heat-affected zone The electrical parameter points were machined; the material removal rate decreased with the decrease of the voltage; the trend of the microhardness of the workpiece surface under different processing voltages was almost the same; the energy spectrum analysis showed that the surface alloying degree of the sample increased with the increase of the processing voltage Rise. By adjusting the power parameters can make short arc machining GH4169 nickel-based superalloy get more satisfactory surface quality.