Preparation Technology And Performance Analysis Of Iron-based Antifriction Coating

This paper described the composition and principle of the inner hole arc sprayingequipment in detail, and introduced the design. The modeling software UG and Solidworkswere used to design3different inner hole arc spraying guns and the schematic diagrams ofengineering had been given. After manufacturing the arc spraying gun, coating was preparedand analyzed. It proved that the inner hole arc spraying gun had well using.Prepared coatings were all typical iron-based coatings. By metallographic analysis, it wasfound that the pore of equiaxed shape was not connected with each other and randomdistribution. Through the color difference and energy spectrum analysis, the presence of oxidein the coating was determined. Oxide was mainly around the pores, and a little part was in thedroplet particle boundary. It was found that the proportion of porosity and oxide content wererelatively close in the same coating by comparison.The differences of wear properties between the grey cast iron and the iron-based coatingwere compared.4Cr13stainless steel were used as an example to study iron-based coating onfriction and wear, and the effects of different factors on the change of friction coefficient. Byanalyzing the related factors, the conclusions of load for leading were obtained. By extendingwear time, it was found that the friction coefficient and wear of iron-based antifriction coatingwas directly proportional to the mount. Refer to the above conclusions, it can provideguidance for the rational design of friction pairs.Through theoretical analysis and experimental verification, iron-based coating was betterthan grey cast iron in performance. In order to know and analyze the performance of coating,numerical model method was used to reconstruct the coating. The random algorithm modelwas very close to the actual coating in morphology, porosity and oxide content.