Understand the Applications of Thermal Spray Processing Technology at a Glance

Thermal spraying technology has a history of nearly a century, dating back to 1910 when Dr. M.U. Schoop from Switzerland developed the first metal-melt spraying apparatus. Initially, thermal spraying was primarily used for applying decorative coatings, with aluminum and zinc wires typically sprayed using oxy-acetylene flames or electric arcs. In the 1930s and 1940s, as flame and arc wire-spraying equipment became more sophisticated and flame powder guns were introduced, thermal spraying evolved from merely applying decorative coatings to repairing mechanical parts with steel wires and to coating steel structures with aluminum or zinc as corrosion-resistant protective layers. In the 1950s, the successful development of detonation spraying and subsequently plasma spraying technologies led to the widespread application of thermal spraying in fields such as aerospace and aviation. Around the same time, self-fluxing alloy powders were developed, enabling the elimination of porosity in coatings through remelting processes and facilitating metallurgical bonding between the coating and the substrate, thereby greatly expanding the application scope of thermal spraying technology. In the early 1980s, supersonic flame spraying technology was successfully developed and gained widespread adoption by the early 1990s, dramatically extending the use of WC-Co hardmetal coatings from aerospace and aviation to various industrial sectors. The emergence of high-energy plasma spraying technologies—such as those with power ratings up to 200 kW, supersonic plasma spraying, and axial-feed plasma spraying, especially the highly efficient supersonic plasma spraying technology—has provided powerful tools for further effective utilization of thermal spraying in diverse industrial applications. As a modern manufacturing technology with broad applicability, relatively simple and flexible processing techniques, wide-ranging applications, and significant economic benefits, thermal spraying can endow surfaces with a variety of functional properties, including wear resistance, corrosion resistance, thermal insulation, heat resistance, electrical conductivity, electrical insulation, erosion resistance, oxidation resistance, friction reduction, lubrication, and radiation protection. Thermal spraying is not only suitable for repairing and strengthening mechanical components but can also be used for manufacturing new parts. Thanks to the wide selection of spray materials, which are not constrained by the need for overall material alloying, it is relatively easy to produce ultra-hard alloys, various ceramic or metal-ceramic coatings, and specialized functional coatings. Moreover, compared to using solid advanced materials throughout, thermal spraying requires significantly less material, making it far more cost-effective than upgrading materials entirely. Consequently, valuable materials can be used boldly without substantially increasing costs, while the surface performance of these materials can be greatly enhanced. Parts repaired by thermal spraying generally have service lives that equal or even exceed several times those of new parts. Thermal spraying technology has a history of nearly a century, dating back to 1910 when Dr. M.U. Schoop from Switzerland developed the first metal-melt spraying apparatus. Initially, thermal spraying was primarily used for applying decorative coatings, with aluminum and zinc wires typically sprayed using oxy-acetylene flames or electric arcs. In the 1930s and 1940s, as flame and arc wire-spraying equipment became more sophisticated and flame powder guns were introduced, thermal spraying evolved from merely applying decorative coatings to repairing mechanical parts with steel wires and to coating steel structures with aluminum or zinc as corrosion-resistant protective layers. In the 1950s, the successful development of detonation spraying and subsequently plasma spraying technologies led to the widespread application of thermal spraying in fields such as aerospace and aviation. Around the same time, self-fluxing alloy powders were developed, enabling the elimination of porosity in coatings through remelting processes and facilitating metallurgical bonding between the coating and the substrate, thereby greatly expanding the application scope of thermal spraying technology. In the early 1980s, supersonic flame spraying technology was successfully developed and gained widespread adoption by the early 1990s, dramatically extending the use of WC-Co hardmetal coatings from aerospace and aviation to various industrial sectors. The emergence of high-energy plasma spraying technologies—such as those with power ratings up to 200 kW, supersonic plasma spraying, and axial-feed plasma spraying, especially the highly efficient supersonic plasma spraying technology—has provided powerful tools for further effective utilization of thermal spraying in diverse industrial applications. As a modern manufacturing technology with broad applicability, relatively simple and flexible processing techniques, wide-ranging applications, and significant economic benefits, thermal spraying can endow surfaces with a variety of functional properties, including wear resistance, corrosion resistance, thermal insulation, heat resistance, electrical conductivity, electrical insulation, erosion resistance, oxidation resistance, friction reduction, lubrication, and radiation protection. Thermal spraying is not only suitable for repairing and strengthening mechanical components but can also be used for manufacturing new parts. Thanks to the wide selection of spray materials, which are not constrained by the need for overall material alloying, it is relatively easy to produce ultra-hard alloys, various ceramic or metal-ceramic coatings, and specialized functional coatings. Moreover, compared to using solid advanced materials throughout, thermal spraying requires significantly less material, making it far more cost-effective than upgrading materials entirely. Consequently, valuable materials can be used boldly without substantially increasing costs, while the surface performance of these materials can be greatly enhanced. Parts repaired by thermal spraying generally have service lives that equal or even exceed several times those of new parts.

We specialize in thermal spray coating services for various industries.

If your products have high requirements for surface finish and dimensional accuracy, or if they will be in long-term contact with liquids and thus demand enhanced wear resistance and corrosion protection, you should choose our company’s tungsten carbide coating applied using the American Praxair JP8000 equipment. From materials to equipment, processes to solutions—we’ve got it all covered in coatings.

High-wear-resistant, ultra-smooth-surface rollers—our company uses the Plasmax JP8000 equipment from the U.S. to apply tungsten carbide coatings with the following performance parameters: Hardness: above HV1300 (HVAF); Porosity: less than 0.5% (HVAF); Bonding strength: over 80 MPa (HVAF). If your products demand extremely high surface finish and dimensional accuracy, or if they will be in long-term contact with liquids and thus require enhanced wear resistance and corrosion protection, you should choose our tungsten carbide coatings applied using the U.S.-made Plasmax JP8000 equipment. Materials—Equipment—Processes—Solutions: We have accumulated extensive experience in coating applications and are now successfully replicating these proven case studies. We’ll guide you through the entire coating manufacturing transition process, ensuring: rapid production start-up; a reliable, one-stop supply solution covering materials, equipment, and processes; coating trials conducted either on-site at your facility or at our technical center; and consistently high coating quality and efficiency. High-wear-resistant, ultra-smooth-surface rollers—our company uses the Plasmax JP8000 equipment from the U.S. to apply tungsten carbide coatings with the following performance parameters: Hardness: above HV1300 (HVAF); Porosity: less than 0.5% (HVAF); Bonding strength: over 80 MPa (HVAF). If your products demand extremely high surface finish and dimensional accuracy, or if they will be in long-term contact with liquids and thus require enhanced wear resistance and corrosion protection, you should choose our tungsten carbide coatings applied using the U.S.-made Plasmax JP8000 equipment. Materials—Equipment—Processes—Solutions: We have accumulated extensive experience in coating applications and are now successfully replicating these proven case studies. We’ll guide you through the entire coating manufacturing transition process, ensuring: rapid production start-up; a reliable, one-stop supply solution covering materials, equipment, and processes; coating trials conducted either on-site at your facility or at our technical center; and consistently high coating quality and efficiency.

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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