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!

Mold plasma-sprayed tungsten carbide cemented carbide coating

Advantages of Supersonic Spraying Tungsten Carbide Coatings: 1. Higher Speed: The supersonic speed of tungsten carbide spraying is about five times the speed of sound. This results in superior processing performance and ensures that there’s no need to worry about processing efficiency. During the spraying process, the powder’s velocity can be rapidly increased, effectively maintaining the density and strength of the sprayed coating, so you can rest assured about its performance. 2. Stronger Bonding: Thanks to the unique nature of the supersonic tungsten carbide spraying process, the coating achieves a highly dense structure, which significantly reduces porosity. This ensures exceptional surface performance. Moreover, this processing technique provides exceptionally high bonding strength, resulting in products of superior quality that are well worth choosing. 3. No Workpiece Deformation: Supersonic tungsten carbide spraying can effectively prevent workpiece deformation even during high-speed operations, guaranteeing excellent practicality and reliability.

Nickel mesh coated with nickel-aluminum alloy powder

Nickel-aluminum alloy thermal spray powders are often used as base layers. Each particle of these powders consists of fine nickel and aluminum powders. During spraying, the thermal spray powder is heated to over 600 degrees Celsius by the flame, triggering a vigorous chemical reaction between nickel and aluminum that forms intermetallic compounds and releases substantial heat. At the same time, some of the aluminum undergoes oxidation, generating additional heat. Under these high temperatures, nickel can diffuse into the substrate metal, significantly enhancing the bond strength of the coating. Another notable feature of nickel-aluminum composite thermal spray powders is that the surface of the coating formed after spraying is rough, providing an ideal substrate for bonding other sprayed materials.

Stator and rotor impeller coated with tungsten carbide.

Tungsten carbide materials, owing to their high hardness, wear resistance, high-temperature tolerance, and corrosion resistance, are widely used in fields such as aerospace, petroleum, metallurgy, and mechanical engineering. In general industrial applications, these materials are referred to as tungsten carbide coatings (hardmetal coatings). Typically, they are produced by supersonic spraying a tungsten carbide/cobalt-based material onto the surface of nickel- or iron-based substrates, forming a protective layer that significantly enhances the substrate's wear resistance and service life. The stator, rotor, and impeller are coated with a layer of tungsten carbide. With a melting point of 2870°, tungsten carbide boasts high hardness and exceptional wear resistance, greatly improving the stability, wear resistance, and corrosion resistance of brake discs.

Application site of the SX-80 plasma equipment in the semiconductor chip industry

The Guangzhou Sanxin SX-80 plasma equipment is being applied at semiconductor chip manufacturing sites. This plasma equipment is used to apply insulating coatings on coating machines, as well as high-temperature-resistant zirconia coatings on lithography and etching machines. These coatings effectively enhance the equipment’s resistance to high temperatures and corrosion, improve its stability, and extend its service life, thereby providing higher-quality equipment services for the chip manufacturing industry.

SX-80 plasma equipment is used by a semiconductor wafer manufacturing equipment manufacturer in Anhui.

The Guangzhou Sanxin SX-80 plasma equipment has been applied by a semiconductor wafer manufacturing equipment manufacturer in Anhui, where it is used to spray high-temperature and corrosion-resistant ceramic coatings. The Guangzhou Sanxin SX-80 plasma equipment, with its excellent performance and highly efficient spraying results, has been successfully deployed in the company’s new equipment coating project. Plasma spraying technology enables uniform application of ceramic coatings onto equipment surfaces, enhancing their resistance to high temperatures and corrosion. This not only extends the service life of the equipment and improves production efficiency but also brings greater economic benefits to the enterprise.