A brazing cladding material for metal surfaces

Abstract

The invention discloses a brazing clad material used for a metal surface, wherein the clad material is powder particles that is constituted of the follow components with weight percent; Ni tungsten carbide powder ( WC-10 Ni) is within 48 percent to 62 percent; Ni powder is within 7 percent to 11 percent; NiCrBSi alloyed powder (AWS BNi-2) is within 27 percent to 45 percent; binder occupies the rest percentage; the size of the Ni tungsten carbide powder particle is within 5 to 15 micro-meter; the size of the Ni powder particle is within 30 to 45 micro-meter; the NiCrBSi alloyed powder particle is within 25 to 35 micro-meter; and the degree of the metal bonding phase between Ni tungsten carbide powder particles is less or equal to 0.3 micro-meter. According to the invention, under the effect of the organic silicon resin binding material and the epoxy resin binding material, the component of the brazing material is uniform and has specific binding property; and the brazing clad material won't be fell off, thus facilitating to the atomic diffusion and the interface reaction during the high temperature connection process and improving the wetting ability of the clad material and the performance of the metal surface.

Description

technical field [0001] The invention relates to a welding material, in particular to a brazing cladding material for metal surfaces. Background technique [0002] In industrial production, mechanical parts often wear and corrode during mechanical transmission and contact, which often become the main form of failure of various mechanical equipment workpieces, resulting in reduced working efficiency of mechanical devices and greatly shortened service life of mechanical parts. A series of problems such as frequent maintenance and replacement, lower product quality, increased material consumption, and greatly increased investment costs have caused serious economic losses and reduced work efficiency. Widespread attention outside. [0003] With the rapid development of my country's high-tech industry, in geological exploration, aerospace, national defense, nuclear industry, petroleum, electric power, bioengineering development and other fields, working in extremely harsh environm...

AI Technical Summary

Problems solved by technology

[0004] Throughout the current research status of wear resistance and corrosion resistance of metal materials, the main surface wear resistance treatment methods currently used include thermal spraying, surfacing welding, hard alloy inserts, vapor deposition, laser cladding, spray forming and nano thermal spraying, etc. , its preparation process has been greatly developed, and its mechanical and wear-resistant and corrosion-resistant properties have also been improved to some extent. However, due to the spatial position and the difficulty in processing the hard alloy coating, it is difficult to accurately control the coating structure and coating surface thickness. The cladding metal is not easy to wet and other problems, so the cladding metal has a series of problems to be solved in the actual use process