CAJ | 학술논문

应用均匀设计实验方法和对测量数据的统计分析结果，系统地考察了喷枪电流、等离子气体流量、喷涂距离和送粉率等工艺参数对Cr2O3涂层显微硬度的影响，并运用逐步回归分析建立显微硬度随所考察工艺参数变化的数学模型；然后以所建立的数学模型为基础，对Cr2O3涂层显微硬度进行了工艺优化. 结果表明：以优化工艺参数喷涂涂层的显微硬度与数学模型预测的最优值相当一致，均匀设计法可用于等离子喷涂涂层显微硬度的工艺优化.
응용균균설계실험방법화대측량수거적통계분석결과，계통지고찰료분창전류、등리자기체류량、분도거리화송분솔등공예삼수대Cr2O3도층현미경도적영향，병운용축보회귀분석건립현미경도수소고찰공예삼수변화적수학모형；연후이소건립적수학모형위기출，대Cr2O3도층현미경도진행료공예우화. 결과표명：이우화공예삼수분도도층적현미경도여수학모형예측적최우치상당일치，균균설계법가용우등리자분도도층현미경도적공예우화.
Effects of power level, plasma gas flow, spraying distance and powder feed rate on microhardness of plasma sprayed Cr2O3 coating were investigated by using uniform design experiment method and statistical analysis of measured data series. Stepwise regression was employed to establish a mathematical model of the relationship between the microhardness and the process parameters. Based on the mathematical model, the microhardness of the coating is optimized with respect to the investigated process parameters. Results show that the microhardness of the sprayed coating obtained by using the optimized process parameters agree very well with the predicted value by the mathematical model.