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| Aerospace Special Process / Plasma Spray |
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Plasma spray equipment can be divided into two different barrels, monopolar gun or triode gun. The monopolar gun uses a single electrode (one positive and one negative) to ionize the argon gas. The triode gun uses three sets of electrodes (three positive and three negative) at the same time to perform gas ionization. The power of the monopolar gun is low, and the stacking efficiency is also low, but it is more suitable for spraying in a small area and not easy to cause overheating of the parts. Because the triode gun uses three sets of electrodes at the same time, the power is higher and the gas and powder required are more. Suitable for large area spraying, but the accumulation efficiency is high and requires gas cooling, otherwise it will easily cause the parts to overheat and affect the quality of the parts and coating such as longitudinal cracks, excessive oxide, etc., and relatively make the product have high reliability and stable coating layer quality.
1. Plasma Spray
Two types of spraying, such as nine-axis automatic plasma spraying and high stacking rate three-pole gun plasma spraying, belong to advanced aerospace special treatment technology, have been certified by the original customers, Safran, GE Aviation, aerospace third-party international certification agencies, NADCAP and the United States CCL laboratory.
2. Tungsten carbide Spray
Considering that the fan blades are in the low temperature section (approximately 300 degrees Celsius) in the application of the engine, CHPC has developed a special wear-resistant coating tungsten carbide in the low temperature section, which has excellent sliding resistance and wear resistance in a non-corrosive environment to protect the titanium alloy metal of fan blades from being damaged by outside substances, such as dust and particles. This technology has been certified by the original customers, Safran and aerospace third-party international certification agencies, NADCAP.
3. Arc Thermal Spray
Electric-arc thermal spray coating is to thermal heating special properties coating material under high temperature and spraying molten coating particles with high speed flow and stick on to the surface of the work-piece. CHPC's arc melting shot technology is used in the high-pressure compression, combustion and high-pressure turbine section of the engine, so that the surface of the product can be evenly coated with a corrosion-resistant layer and a heat insulation layer. This technology has been certified by the original customers, Safran, GE Aviation, and aerospace third-party international certification agencies, NADCAP.
4. T400, T800 Coating Spray
In order to expand the technology, besides aluminum silicon coating (soft coating at low temperature section), tungsten carbide coating (hard coating at low temperature section), arc melting shot (heat resistant corrosion coating at high temperature section), we also developed high temperature section resistance Grinding coating T400 and T800 coating, also known as Tribaloy. T400 and T800 are cobalt-based coatings, and blending nickel alloys produces excellent high-temperature wear resistance, high-temperature corrosion resistance and other important characteristics of high-temperature engines, so they are widely used in various super alloy products. This technology has been certified by GE Aviation and NADCAP international certification by aerospace third parties.
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