Some of the use of chromium carbide points to introduce, come and collect!
Release time:
2023-01-30 10:41
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What are some of the use points of chromium carbide? Let's take a look at it.
Chromium carbide is a kind of inorganic raw material with high melting point. It has good wear resistance, corrosion resistance and oxidation resistance in high temperature environment. It is widely used as a thermal spraying material for metal surface protection, and is also commonly used as a refiner and other wear-resistant and corrosion-resistant parts. In fact, it can be used as an additive in mining and machining. In addition, if used, it can also be used as a welding raw material additive. The welding rod made of it can be surfacing on the working surface of some mechanical equipment (such as coal mill, ball mill, jaw plate, etc.), chromium carbide can improve the service life several times or even more, and is widely used in thermal spraying raw materials for metal surface protection process. Understanding also found that its melting point is 1890 ℃, boiling point is 3800 ℃; in high temperature environment has good wear resistance, corrosion resistance and oxidation resistance, belonging to the cermet, chromium carbide is widely used in aero engines and petrochemical machinery, can greatly improve the service life of machinery, is also commonly used as wear-resistant, corrosion-resistant parts of the grain refiner. Cr3C2-based cermets have excellent oxidation resistance at high temperatures.
Chromium carbide is used as an additive to tools made of cemented carbide to increase hardness by preventing growth. The main component of most cutting tools is tungsten carbide. Tungsten carbide is combined with other carbides such as titanium carbide, niobium carbide, chromium carbide, etc., and the product is sintered with a cobalt substrate during use. The formation of the composite feedstock is prevented, resulting in a fine grain structure with excellent hardness. The accidental formation of chromium carbides in stainless steels and other alloys can lead to intergranular corrosion. In the use of the process can also resist the wear of thin films and semiconductor films; therefore, we are talking about today, of course, can also be added to the production of cemented carbide Cr3C2, not only can refine the WC grain, but also can improve the strength and hardness of the alloy. In order to improve the corrosion resistance of the alloy, it is widely used as corrosion-resistant alloy structural raw materials (instruments, valves, seals, etc.) in industrial production. Chromium carbide is widely used in stainless steel, heat-resistant steel, corrosion-resistant steel, alloy steel and other special steel smelting And production.
Chromium carbide is a kind of excellent resistance to high temperature oxidation, friction and wear resistance and gas corrosion resistance of the material. Therefore, it is mainly used for high temperature resistant coatings, but the adhesion of direct spraying chromium carbide coatings is poor. Therefore, it is mainly used as the main raw material component for the preparation of NiCr-CrC2 composite powder. In addition, it can also be used for surface treatment of metal parts. Chromium carbide is used to coat the surface of another metal in a technique called thermal spraying. The powder is mixed with solid nickel chromium. This mixture is then heated to a very high temperature and sprayed onto the object to be coated, thereby forming a protective layer. Chromium carbide This layer is essentially its own metal matrix composite material. When used, it is also mainly composed of hard ceramic particles embedded in a nickel-chromium matrix. The substrate itself contributes to the corrosion resistance of the coating, as the metallic form of nickel-chromium is corrosion resistant. After the overspray coating, the coating part is subjected to diffusion heat treatment to achieve an effect in terms of coupling strength and hardness with the base metal. Another technique employs chromium carbide in the form of a cover plate. These are prefabricated chromium carbide coated steel plates designed to be welded to existing structures or machines to improve performance.
Chromium carbide
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