Method for producing Ni-Al bimetal composite material solid core wire material

Abstract

The invention relates to a method for preparing a solid core wire material of a Ni-Al bimetal composite material and belongs to the field of hot spraying in the material processing project; and the method is used for spraying and priming. The finished product is mainly applied to anticorrosion, wearing resistance and the like of pipe wall and four pipelines of a boiler in a power plant. The method can improve the spraying quality of other spraying coats for protection and the application effect of the coats. The preparation method is applied to prepare the wire material and has simple technical process and high production efficiency; and the prepared solid core wire material has excellent quality and good spraying effect. The invention is the method for preparing the solid core wire material of the Ni-Al bimetal composite material and is characterized in that the powdery core comprises the following compositions in mass percentage: 5 to 20 percent of Al and the balance being Ni. The prepared material is mainly applied to an anticorrosive material of the pipeline maintenance of the boiler in a thermal power generating field, ship manufacturing, ocean engineering and other large-scale steel-frame structures.

Description

technical field [0001] The invention relates to a method for preparing solid core wire of Ni-Al bimetallic composite material, which belongs to the field of thermal spraying in material processing engineering, and is applied to the primer material before thermal spraying coating spraying, and its finished product is mainly used in power plant boiler tubes The anti-corrosion and wear-resisting aspects of the wall and the "four tubes" of the boiler can improve the performance and quality of spraying other protective coatings. Background technique [0002] Thermal spraying technology uses different heat sources to heat various sprayed materials (such as metals, alloys, ceramics, plastics and composite materials, etc.) , high-speed spraying onto the surface-pretreated workpiece to form a pile-up spray coating that is tightly combined with the substrate. The most important factor affecting the spraying quality in arc spraying is the use of spraying wire, which is very important ...

AI Technical Summary

Problems solved by technology

[0005] In the process of preparing Ni-Al alloy coating, due to the large difference in specific gravity between nickel and aluminum two-phase elements, it is easy to cause specific gravity segregation during smelting, resulting in difficulty in metallurgical melting and affecting the quality of the coating; If the content of aluminum in the alloy is high, the alloy will become hard and brittle, making it difficult to draw and reduce the diameter to make wire, which seriously affects the application and development of zinc-aluminum coating

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