On the stage of modern industry, thermal spraying technology is like a skilled painter holding a magical paintbrush, painting layers of strong, wear-resistant, and corrosion-resistant protective films on the surfaces of various components, endowing them with the ability to serve in harsh environments for a long time

The principle of thermal spraying technology may seem simple, but it contains profound physical and chemical wisdom. It uses heat sources such as burning flames, arcs, or plasma to instantly melt or semi melt sprayed materials such as metals, alloys, ceramics, etc., and then sprays these tiny molten particles onto the surface of the treated substrate through high-speed flame flow. At the moment of impact with the substrate, these particles quickly flatten and solidify, stacking layer by layer to form a coating with specific properties. This process is like carefully building a sturdy castle in the microscopic world, where every particle is the brick and stone of the castle, irregularly shaped but closely connected, jointly resisting the wind and rain of the outside world

There are many members in the family of thermal spraying technology, each with their own unique abilities. Flame spraying is the first big brother to appear. It uses the flame generated by burning acetylene, propane and other gases mixed with oxygen as the heat source. It is easy to operate and has low equipment costs. It is commonly used for the repair and protection of general industrial components, such as the wear repair of some large shaft parts. By flame spraying metal materials, they can be rejuvenated and restore their size and surface properties. Arc spraying is a representative of efficiency and economy. It uses two metal wires as electrodes to melt metal at high arc temperatures, and then uses compressed air atomization spraying to achieve fast deposition rate of metal coatings. It is highly effective in the anti-corrosion of bridge steel components and can quickly coat large steel structures with armor to resist wind and rain erosion. Plasma spraying is synonymous with high-end precision. The plasma flame generated by it has an extremely high temperature, up to tens of thousands of degrees Celsius, which can easily melt refractory metals, ceramics and other materials. The coatings prepared have good performance. In the aerospace field, ceramic coatings are sprayed on aircraft engine blades, allowing them to work stably under high temperature and high-speed airflow erosion, making them a pearl in the industrial crown

The application of thermal spraying technology spans across multiple key industrial fields. In aerospace, it is the guardian deity of key components of aircraft, whether it is the wear-resistant coating of aircraft landing gear or the key coating of thermal protection system of spacecraft, they all rely on the fine carving of thermal spraying. In mechanical manufacturing, it endows large equipment components such as machine tools and mining machinery with an extremely long service life, making these industrial giants rock solid under high-intensity operations. In the field of energy and power, thermal spraying coats high-temperature components of thermal power generation and overcurrent components of hydropower equipment with anti-corrosion and erosion resistance to ensure stable power supply. In the petrochemical industry, it is a powerful tool for corrosion and wear prevention. From oil and gas pipelines to reaction vessels and tower walls, thermal spray coatings silently resist the test of harsh working conditions The advantages of thermal spraying technology are like shining stars, illuminating the night sky of industrial surface treatment. It has almost no limitations on the substrate material, whether it is metal, alloy or composite material, it can become a stage for its skills to be displayed; Flexible control of coating thickness, from ultra-thin functional coatings of tens of micrometers to structural coatings of several millimeters, can be accurately achieved; The process is flexible and versatile, which can be used for initial manufacturing surface strengthening of components, as well as rapid and efficient repair after component damage, greatly reducing the cost and resource consumption of industrial production, and is an important technical support for achieving sustainable development

With the wave of technology rolling forward, thermal spraying technology is also continuously evolving. New spray coating materials continue to emerge, and nanostructured coating materials have achieved a qualitative leap in coating performance; The popularization of automated and intelligent spraying equipment has made the coating quality more uniform and stable, and greatly improved production efficiency. In the future, thermal spraying technology will expand into more emerging fields, such as surface modification of artificial joints in the biomedical field, to safeguard human health; In the surface treatment of batteries and motor components for new energy vehicles, we aim to help realize the dream of green travel and continue to write a legendary chapter in industrial surface treatment