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Rotor, pole-changing wheel, and spiral supersonic plasma-sprayed tungsten carbide coating for new-energy lithium battery powder preparation equipment.
To isolate metallic foreign objects, lithium battery material manufacturers apply protective coatings to components of production equipment that come into contact with the materials. The three key properties—wear resistance, high-temperature resistance, and non-metallic nature—make tungsten carbide spraying an ideal choice; consequently, most lithium battery material production processes incorporate extensive tungsten carbide spraying for protection.
Roller-sprayed tungsten carbide coating—supersonic spraying for wear and corrosion resistance
Characteristics of Tungsten Carbide Thermal Spray Coatings: 1. The flame jet velocity is extremely high—typically 53 times the speed of sound. 2. The coating is highly dense with strong bonding strength; its porosity can be less than 1%, and the bonding strength can exceed 70 MPa. 3. The coating material exhibits low oxidation, minimal carbon loss, and high hardness.
Electrical insulation bearings with specially coated inner and outer rings, offering excellent corrosion resistance and long service life—motor insulation bearings.
A key feature of insulated bearings is the presence of an extremely thin (on the order of micrometers) coating on their surface, which provides electrical insulation and can withstand electrical arcing caused by voltages exceeding 500V. A thicker coating can even resist high-voltage discharges up to 1,000V, thereby effectively preventing defects such as arcing induced by induced currents on the spindle and bearing, which could lead to corrosion on the bearing surface, the formation of shrinkage cavities on metal surfaces, and the creation of grooves on the bearing’s rolling elements. Here, a special note: At high frequencies, the induced shaft current can become substantial. If insulated bearings are not used, the circulating currents that flow through the bearing can easily cause overheating or severe electrochemical corrosion, ultimately leading to bearing damage.
Plasma Ceramic Coating—Alumina, Titanium Dioxide, Zirconia, and Chromium Oxide Ceramic Plasma Spraying Equipment
Introduction to Plasma Spraying Technology Plasma spraying is a thermal spraying method that uses a plasma arc as the heat source and relies primarily on spray powder materials. Steps of Plasma Spraying During plasma spraying, a direct-current arc is generated between the cathode and the anode (nozzle). This arc heats and ionizes the introduced working gas, transforming it into a high-temperature plasma that is ejected from the nozzle, forming a plasma flame. The powder material is fed into the flame by a carrier gas, where it is melted, accelerated, and sprayed onto the substrate material to form a coating. The working gas can be argon, nitrogen, or a mixture of these gases with hydrogen added; alternatively, a mixed gas of argon and helium can also be used.
Wear- and corrosion-resistant powder-making equipment for plasma spheroidization
5. The plasma spheroidization powder-making equipment includes: a powder collection tank, an exhaust gas filter, a plasma power supply, a control cabinet, a powder feeder, a transfer box, and a chiller, with a power rating of 80 kilowatts. 6. The powder processed by the plasma arc has a throughput of 2.8 to 10 kg/hour, and the powder feeder can deliver particles in the size range of 5–200 μm.
Plasma spraying of the SX-80 production line—spraying the entire circumference.
The Sanxin SX-80 plasma spraying production line is being used for coating tungsten carbide components at a hard alloy enterprise in Jiangsu Province. Plasma spraying is a surface enhancement and modification technology that endows substrate surfaces with properties such as wear resistance, corrosion resistance, resistance to high-temperature oxidation, electrical insulation, thermal insulation, radiation shielding, reduced friction, and sealing. In plasma spraying, a plasma arc powered by direct current serves as the heat source, heating ceramic, alloy, metal, and other materials to a molten or semi-molten state. These materials are then sprayed onto the pre-treated workpiece surface at high velocity, forming a firmly bonded surface layer.
The SX-80 plasma equipment is used for semiconductor wafers.
The SX-80 plasma equipment is being used by a semiconductor wafer manufacturing equipment manufacturer in Anhui Province. Guangzhou Sanxin’s SX-80 plasma equipment is being applied by a semiconductor wafer manufacturing equipment manufacturer in Anhui Province to spray high-temperature and corrosion-resistant ceramic coatings.
Supersonic Tungsten Carbide Coating for Injection Molding Machine Screws
The SX-8000 supersonic flame spraying system is a new type of HVOF system. Its basic principle involves atomizing kerosene thoroughly using an atomizing nozzle to produce a combustible mixture, which is then fed into the combustion chamber along with an oxidizer—oxygen. After being ignited by the ignition system, the high-temperature, high-pressure gas is further accelerated and burned through a Laval nozzle, generating a high-temperature, high-pressure supersonic flame jet. Meanwhile, the powder feeding system delivers powder materials from a low-pressure zone into the flame jet, where they are heated and accelerated before being sprayed onto the workpiece surface to form a high-quality coating.
Supersonic Spray Coating for Roll Processing
Metal thermal spraying technology is one of the commonly used metal surface protection techniques in modern industrial development. As this technology has matured, an increasing number of industries have begun adopting thermal spraying to enhance the surface strength and perform surface repairs on damaged mechanical components. Using metal thermal spraying technology to repair the surfaces of damaged products can effectively extend the service life of the substrate, thereby reducing costs and improving production efficiency—making it an important technological approach for modern industrial development. As a critical component in mechanical equipment, rolls are widely used across various industries. Therefore, it is essential to enhance their performance in areas such as wear resistance, corrosion resistance, and high-temperature resistance. Guangzhou Sanxin Supersonic Thermal Spraying Services endows rolls with these indispensable properties. Choose Sanxin—choose peace of mind!
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