Alloy with insulated surface and preparation process thereof

Abstract

The invention relates to an alloy with an insulated surface and a preparation process thereof, and belongs to the technical field of special alloy preparation. The alloy consists of the following chemical components in percentage by mass: 10-35% of chromium, 2-10% of aluminum, 0-0.5% of silicon, 0.1-1.0% of manganese, 0.2-0.5% of cobalt, 0.1-0.7% of vanadium, 0.1-0.8% of tungsten, 0.2-0.8% of niobium, 0.1-1.2% of nickel and the balance of ferrum and inevitable impurities. The preparation process comprises melting, refining, deoxidization, pouring and thermal treatment. Trace alloying elementsare added based on an oxidation-resistance ferrum-chromium-aluminum ferrite alloy, a thermal treatment process is carried out on the mixture, aluminum in the material can form a compact aluminum oxide ceramic layer on the surface of the material in the thermal treatment process, and the ceramic layer has relatively higher resistance, proper surface hardness and high abrasion resistance.

Description

technical field [0001] The invention relates to an alloy with insulating properties on the surface and a preparation process thereof, belonging to the technical field of preparation of special alloys. Background technique [0002] Alumina ceramics and phenolic resins are usually used as insulating devices in welding due to their good insulating properties. However, due to the high brittleness of the ceramic material, it is fragile and broken when there is an impact in the use environment. The resulting replacement time cost is particularly expensive on a modern automatic production line, and molds are required for molding, so special-sized devices are processed. It is more difficult, the production cycle is longer, and the cost of small batches is very high. Phenolic resin, also known as bakelite, is another choice besides alumina ceramic positioning parts, but its shortcomings of low temperature resistance and poor impact resistance will also affect the service life. Ther...

AI Technical Summary

Problems solved by technology

There is absolutely no problem with the hardness and insulation of ceramics, but due to the high brittleness of ceramic materials, they are easily broken and broken when there is impact in the use environment, and the resulting replacement time cost is particularly expensive in modern automatic production lines

Moreover, molds are required for forming, so it is more difficult to process positioning pins with special sizes, the production cycle is longer, and the cost of small batches is very high.

Phenolic resin is also called bakelite, which is another choice besides ceramic positioning parts, but its disadvantages of high temperature resistance and poor impact resistance will also affect the service life

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