The Research Of Layer-Sheet Over-Laying Material And Welding Technology

Wear resistant material was applied widely in each department of industry and agriculture. But most materials were inactivation because of wearing. And a large of wear resistance of base parts in our country was below foreign advantage level, which making huge loss in economy. And there were more wear that the parts worked in several conditions. So there was huge economic significance for using and popularize bead welding rational. Bead welding technique could repair parts surface, reduce cost in economy. There were important applications in national product. Bead welding materials occupy important position in bead welding technique. People had developed lots of bead welding materials for adapting to complex application environments. There were miscellaneous shapes of materials, such as electrode, belt material, flour and so on. The constituent and histology of material lead to decisive effect for serviceability and field of application. As the newest model bead welding materials with the form of lamellar and band which have a large development and driving to maturity in foreign, but lacking of research in domestic. This bead welding materials own good flexibility, elasticity, and extensive application.This paper reached on a lamellar state bead welding materials with good flexibility to repair the parts surface and the material of tubing mini-type for liable wear. To achieve good results in comparison, seven kinds of binder materials is prepared: sodium silicate, cellulose, silicon rubber, glass plastic, polyvinyl alcohol, silica sol, TEOS, which mixed with hard quality material Ni60H to make up of lamellar state bead welding materials. At first, test the elastic of lamellar, then build-up by welding on Q235 steel plate and analyzed the organization of bead weld bed after welding, compared the welding organizations with different binder admixture, selecting suitable binder admixture. The result show that, the bead welding materials of binder admixture mixture with organic silicon sealant and epoxy resin, which with good flexibility and could arbitrary bending; through SEM photograph it can be seen the bead welding materials of binder admixture mixture with organic silicon sealant and epoxy resin with the rate of 1:1, adding to WC and CaF₂, and welding organization uniform, non-defect, WC extent lamellar structure, with good wear-resisting property.