Electric arc spraying powder core wire with high-temperature resistance and chlorine corrosion resistance

Abstract

The invention relates to an electric arc spraying powder core wire with high-temperature resistance and chlorine corrosion resistance. The powder core wire comprises a powder core and an outer skin for coating the powder core, wherein the powder core is prepared by mixing the following components by weight percent: 6-15% of Ti powder, 14-22% of Cr powder, 15-25% of CrB2 powder, 7-15% of Ni-coated Al powder, and the balance of Ni powder. The wire is prepared by using the following steps of: (1) weighting all the powder core raw materials according to a ratio; (2) mixing all the powder core raw materials; (3) coating the mixed powder core raw materials by the outer skin to form a rough wire; and (4) lightening the rough wire in a step-by-step manner so as to form a finished wire. The electric arc spraying powder core wire with high-temperature resistance and chlorine corrosion resistance, disclosed by the invention, can form a continuous compact protective coating on a metal base material after being sprayed by an electric arc, particularly being sprayed by the electric arc at a supersonic speed; and the protective coating has high-temperature resistance and chlorine corrosion resistance, is low in raw material cost, and is widely applied to surface protection on devices under a high-temperature and chlorine-corrosion environment.

Description

technical field [0001] The invention relates to a high-temperature-resistant and chlorine-resistant electric arc spray powder core wire material, which is mainly used for surface protection of equipment under high-temperature chlorine corrosion environments such as boiler tube walls. Background technique [0002] In recent years, due to the adverse impact of solid waste on the environment, the problem of garbage disposal has become a global environmental problem. At present, domestic waste disposal methods mainly include: incineration method, composting method, landfill method, and harmless comprehensive treatment method. Among them, incineration of waste to generate electricity is the most effective way to realize the recycling, reduction and harmlessness of domestic waste. At present, there are more than 2,000 domestic waste incineration plants in 35 developed countries and regions. At present, more than 90% of waste in Japan is treated by incineration, and the proportion...

AI Technical Summary

Problems solved by technology

At present, the arc spraying process is used to make high-temperature chlorine-resistant coatings for waste incineration boilers. The materials selected include 45CT, Inconel600 alloy, Inconel625 alloy, etc., but these materials are expensive and difficult to use in large quantities.