Thermal spraying processing: heat resistance and heat insulation

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last updated：Apr 04, 2016

日本鋳造技術研究所

Official site

We select and implement the optimal processing methods and materials according to various purposes.

- I want heat resistance characteristics at high temperatures. - I want to be able to use it in molten metal. - I want to apply a coating that can insulate against ultra-high temperatures. In such cases, thermal spraying is the solution. Thermal spraying is convenient when you want to protect only a part with heat-resistant metals or insulating materials, or when you want to use metal products in molten metal. 【Advantages of Thermal Spraying】 - Depending on the type of thermal spraying, there is almost no thermal distortion (the base material temperature is at most around 200°C). - It can provide not only heat resistance but also different added values simultaneously (such as corrosion resistance and wear resistance). For more details, please contact us or download the catalog.

Related Link - http://www.nittyu-ken.com/project/spray/purpose3/

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basic information

【Heat Resistance and Thermal Insulation】 ○ In gas turbines and other applications where the performance degradation of heat-resistant alloys is significant, thermal insulation coatings are applied using thermal spraying. → This is a technology that suppresses the increase in substrate temperature by surface treating materials with low thermal conductivity. ○ For various boiler components subjected to high temperatures (oxidation) and corrosion simultaneously, the lifespan can be greatly extended by coating the surface with heat-resistant and corrosion-resistant metals (such as cermets) through thermal spraying as a countermeasure against high-temperature corrosion. ○ When using metal products in molten metal, heat-resistant molten metal and various ceramics are thermally sprayed to protect the metal products. 【Examples of Thermal Spraying Processing】 ○ Thermal insulation spraying on ladles used for melting copper alloys (also prevents the contamination of impurities such as iron). ○ Thermal insulation spraying on troughs used for melting aluminum (also prevents the contamination of impurities such as iron). ○ Thermal resistance and oxidation-resistant spraying on graphite products (extends the lifespan of graphite and provides oxidation sealing treatment plus thermal spraying). ○ High-temperature corrosion-resistant spraying on boiler tubes (heat-resistant, oxidation-resistant, chloride-resistant, sulfide-resistant, and erosion-resistant). ● For more details, please contact us or download the catalog.