高速电弧喷涂不锈钢涂层的旋转回归试验研究

对比研究了３Ｃｒ１３不锈钢高速电弧喷涂涂层和普通电弧喷涂层的孔隙率、氧化物含量、涂层结合强度和滑动磨损性能，并采用多因素正交旋转回归设计和单因素对比试验的方法了高速电弧涂工艺参数对３Ｃｒ１３不钢涂层显微硬度的影响，用微机回归得到了喷涂工艺参数与涂层硬度之间的定量关系式。结果表明，和普通电弧喷涂涂层相比，高速电弧喷涂涂层组织致密、孔隙度低、涂层氧化物含量增多，涂层－基体界面结合强度大于４０ＭＰａ，比

Rotational Regression Experimental Study on High Velocity Arc Sprayed Stainless Steel Coatings

A comparative study of porosity, oxide contents, bond strength and wear resistance of 3Cr13 stainless steel coatings deposited by high velocity and regular arc spray processes was carried out. An orthogonal and rotational regression experimental method and an ordinary single factor experimental method were adopted to evaluate the coating hardness with respect to the effect of processing parameters. The quantitative formula of processing parameters with coating hardness was obtained by means of microcomputer. The results show that, compared with the regular arc spray process, a dense coating with lower porosity, higher bond strength and higher oxide contents were produced by a newly developed high velocity arc wire spray process. The bond strength is higher than 40MPa, which is increased by 52 percent than that of regular arc sprayed coatings. The orthogonal and rotational regression experimental results show that the spray distance and the interaction of spray distance and arc current had significant effects on the coating hardness. The results also indicate a great difference between the orthogonal and rotational regression experiment and the single factor experiment.