The recommended spraying materials are chromium oxide, alumina and magnesium chromate. The recommended spraying method is plasma spraying. Application examples include induction coil of high temperature furnace, brazing and heat treatment fixture, torch thermal barrier, heating cover, pyrometer sleeve and U-groove of cast iron plant.
What are the functions of thermal barrier coatings in the spraying industry? The thermal barrier coating has low thermal conductivity, which can be used as a thermal barrier to reduce the heating degree of the base metal. What are the requirements for thermal barrier coatings? The coating shall meet the following requirements: it must be resistant to oxidation at working temperature; Good heat resistance; The coefficient of thermal expansion is as close as possible to the matrix; Low thermal conductivity.
What are the functions and applications of anti molten metal coatings?
The anti molten metal coating can withstand the action of molten metals such as zinc, aluminum, steel, iron and copper. What are the requirements for anti molten metal coatings? These coatings shall be able to withstand the corrosion of slag and flux and the corrosion of metal vapor and oxygen near the melt liquid level; Prevent the formation of low melting alloy between coating and melt; Can withstand thermal fatigue and thermal shock.
The recommended spraying materials are alumina, magnesium chromate, scheelite and platinum. The recommended spraying methods are plasma spraying and combustion flame spraying. Application examples include galvanizing tank, casting tank, mold, tuyere, zinc distillation tank, condensate pipe, zinc alloy melting furnace, galvanizing impregnation tank, blast furnace slag mouth, aluminum mold, copper mold, continuous caster mold, sand mold, plate mold, zinc smelting stirring device, mold guard, oxygen pipe nozzle, converter oxygen lance, ladle nozzle, metal melt temperature measuring head and graphite electrode.
In the production of metallurgical industry, the major factor of failure of various mechanical equipment is wear, and the more important function of thermal spraying is to provide wear-resistant coating to effectively protect a large number of Engineering wear. This type of coating has a wider range of applications than other types. The wear mechanism is complex, there are many types, and the metallurgical production conditions are different, so the functions and requirements of this kind of coating are also different.
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