Thermal spraying process of A588 weathering steel plate

Thermal spraying is a process that uses a high temperature flame for spraying a powdered material onto a substrate surface. It is a highly efficient spraying technology, which can form a dense, strong, wear-resistant, corrosion-resistant and high-temperature resistant coating. The thermal spraying process of A588 weathering steel plate has excellent performance, good wear resistance and corrosion resistance, and good integrity.

The thermal spraying process of A588 weathering steel plate mainly includes six steps: pre-processing, pre-treatment, thermal spraying, post-treatments, inspection and application. Before thermal spraying, it is necessary to pretreat the surface of the substrate. Generally, grit blasting and surface shot peening are used. In addition, due to the complexity of the weathering steel plate’s composition and structure, in order to ensure the coating’s adhesion strength and anti-corrosion performance, it is necessary to heat the substrate to approximately 500°C before spraying.

In the thermal spraying process, it is necessary to select the appropriate thermal spray technology and spray the powder material onto the substrate’s surface. The commonly used thermal spray processes are plasma spraying, high speed oxygen fuel spraying, flame spraying and electric arc spraying, etc. It is important to note that the weathering steel plate should be sprayed with a layer of zinc rich paint before spraying in order to achieve maximum corrosion protection.

Post-treatment of the thermal spraying process of the A588 weathering steel plate is also very important. In order to reduce the as-sprayed coating’s porosity and improve its wear resistance, surface shot peening and other shot peening treatments can be applied. In addition, sandblasting and polishing can also be used to improve the smoothness and aesthetics of the surface. Finally, the surface of the coated weathering steel plate should be inspected and tested to ensure that the coating meets the required performance standards.

The thermal spraying process of A588 weathering steel plate can effectively protect the substrate surface from corrosion and wear. The process is simple, fast and efficient, and the coating can be widely used in industrial, chemical and construction related applications. In addition, the thermal spray process can be customized to meet the requirements of specific applications, providing reliable anti-corrosion and anti-wear protection for the weathering steel plate.