Nickel 60 alloy slurry coating and remelting process

Abstract

The invention relates to a nickel 60 alloy slurry coating and remelting process, and belongs to a coating and remelting process. The technology comprises the following steps that S1, a nickel 60 alloy prefabricated coating is fully cured and dried, the curing and drying temperature of the nickel 60 alloy prefabricated coating is 50-80 DEG C, the drying time of the nickel 60 alloy prefabricated coating is 8-12 hours, a KM coating or an inorganic adhesive coating is brushed on the surface of the nickel 60 alloy prefabricated coating after the nickel 60 alloy prefabricated coating is cured and dried, and drying continues to be performed for 6-8 hours at the temperature of 50-80 DEG C; S2, the dried sample is subjected to medium-frequency melting, the remelting temperature needs to be controlled to be 960-1050 DEG C in the process, and the current and the moving speed of the X axis of the moving trolley are adjusted; and S3, after remelting is finished, the sample is taken out and cooled to a room temperature, and the high-temperature coating protective layer is removed on the surface of the sample. According to the invention, powder material waste caused in the spraying and powdering process of the self-fluxing alloy is reduced (the powdering rate of an existing old method is only 30-55% generally). Compared with a spraying powdering method, the process is easy, convenient and rapid to operate. The original protection effect of the coating is not influenced.

Description

technical field [0001] The invention relates to a nickel 60 alloy slurry coating and remelting process, which belongs to the coating and remelting process. Background technique [0002] Ni60 self-fluxing alloy powder is widely used in chemical, mining, metallurgy and other mechanical equipment for anti-corrosion and wear-resistant key parts. The coating preparation method is mainly based on oxygen-acetylene spray welding, but most of them have low production efficiency and high cost. , Low bonding strength and other shortcomings. Induction fusion coating, which appeared in the 1990s, used flame spraying or plasma spraying to prepare alloy pre-coating, and then melted and coated on the surface of parts by induction heating and melting. However, in the process of spraying and powdering self-fluxing alloys, due to "Large range and the rebound of powder particles colliding with the matrix lead to low powder deposition rate, resulting in a great waste of powder materials, low pr...

AI Technical Summary

Problems solved by technology

[0002] Ni60 self-fluxing alloy powder is widely used in chemical, mining, metallurgy and other mechanical equipment for anti-corrosion and wear-resistant key parts. The coating preparation method is mainly based on oxygen-acetylene spray welding, but most of them have low production efficiency and high cost. , Low bonding strength and other disadvantages

Induction fusion coating, which appeared in the 1990s, used flame spraying or plasma spraying to prepare alloy pre-coating, and then melted and coated on the surface of parts by induction heating and melting. However, in the process of spraying and powdering self-fluxing alloys, due to "The large range and the rebound of powder particles colliding with the matrix lead to low powder deposition rate, resulting in great waste of powder materials, low production efficiency and poor working environment

The common domestic practice of induction coating is to heat the alloy slurry to form a film under the protection of inert gas or vacuum, and most of them are in the experimental research stage, or only the laboratory has achieved staged success, and has not yet been industrialized.