Plasma spraying is a technology that is strengthened on the surface and surface modification, which can make the surface of the substrate with wear resistance, corrosion resistance, high temperature resistance, electrical insulation, heat insulation, radiation protection, grinding, and sealing.Plasma spraying technology is used as a thermal source driven by DC electrical arc, heating ceramics, alloy, metal and other materials to melt or semi -melting state, and uses a high -speed spray to the surface of the pre -processing workpiece to form a solid surface layer.Essence
The advantages and disadvantages of plasma spray
Qi -stable plasma (GP) spraying advantages: The mechanical structure is simpler, the arc is easier, the electrode life is long, the combustion is stable, and the independent airflow and pressure control efficiency are more efficient.Disadvantages: Vendor is expensive, the two media system (stabilization and cooling) spraying rate is small, and the quality of spraying materials is high.
Plasma spray manufacturer
Introduction to Wuxi Suwei Hot Spraying Technology Co., Ltd.: Wuxi Suwei Hot Spraying Technology Co., Ltd. is a manufacturer of deep research on thermal spray technology. Through techniques, it uses advanced foreign spray technology to establish long -term cooperative relationships with many companies.With heavy credit, high -quality quantity has been trusted by customers.Main products: Plasma spraying, supersonic flame spraying, tungsten carbonide, hard alloys, spray stainless steel, plasma spray ceramic, spray chromium oxide, aluminum oxide, sprayed aluminum titanium titanium, spray -coated oxide, supersonic arc spraying, spray -speed arc spraying, spray -speed arc spray,Steel structure anticorrosion.Company Address: No. 22, Zhenshi Road, Shitangwan Industrial Park, Huishan District, Wuxi City, Jiangsu: 15961779603
Plasma spraying process
There are many factors that require careful work that requires careful work, and in this process, there are many factors that affect the quality of large coatings.Then the main processes are: 1. Choose plasma gases.According to the availability and economy of gas, it is more appropriate to choose N2.It is not only cheap, but also its ions have higher flame fever and faster heat transfer.However, it is not available for some materials that are easy to nitride. At this time, AR, which will be slightly more expensive.2. The power of the arc.During the process, the power requirements for the arc are also very strict, neither too high nor too low.If the arc power is too high, the arc temperature will be increased, and the gas will be converted into plasma, and the temperature of the plasma flame will increase, which may cause the nature of the coating.If the arc power is too low, the temperature of the plasma is too low, and the nature of the coating will change.
Plasma spray principle
The principle is to generate plasma flame flow through plasma spray guns (also known as plasma arc generator).The tungsten electrode (cathode) of the spray gun and the nozzle (anode) are connected to the negative electrode and the positive electrode (the workpiece is not charged), respectively.plasma.Under the combination of mechanical compression effects, self -magnetic compression effects and thermal compression effects, the arc is compressed to form a non -transfer -type plasma arc.Plime flow conveying powder spraying materials into the plasma arc into the person, and are quickly heated to melt or semi -melting melting state. As the plasma flow high -speed impact on the pretreatment substrate surface, and form a firm spray coating on the surface of the substrate.As a result, the parts are sprayed on the surface of different hardness, abrasion, heat resistance, heat -resistant, corrosion resistance, insulation, insulation, lubrication and other special physical chemical properties to meet the requirements of different working conditions of the parts.

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