In the modern industrial processing field, tungsten carbide coatings have become the preferred choice for surface treatment of many metallic and non-metallic products due to their high hardness and excellent wear resistance. Spray technology is one of the important application methods, which efficiently applies tungsten carbide material to the surface of the substrate. However, the coating often requires grinding after spraying to achieve better performance. This article will explore the differences between the sprayed tungsten carbide coatings before and after grinding, as well as the advantages of this technology in different products and applications.
Tungsten carbide coatings are typically applied using methods such as plasma spraying, high-velocity oxygen fuel (HVOF), or flame spraying. These techniques heat the tungsten carbide powder to high temperatures and spray it at high speed onto the substrate surface, forming a coating with high hardness and wear resistance.
Surface Roughness: Due to the high-speed impact of powder particles during the spraying process, the surface of the coating may be relatively rough, which could affect the final application performance of the coating.
Porosity: The sprayed coating may have certain pores, which could affect the mechanical properties and corrosion resistance of the coating.
Coating Thickness: The thickness of the coating may be unevenly distributed on the substrate, which could affect the uniformity and wear resistance of the coating.
Surface Smoothness: Grinding effectively removes the roughness from the surface of the coating, making it smoother and thus improving its performance in use.
Reduced Porosity: Grinding treatment helps to reduce the porosity in the coating, enhancing its densification, and thereby increasing its wear resistance and corrosion resistance.
Coating Uniformity: Grinding can make the coating thickness more uniform, ensuring consistent performance of the coating on the substrate.
The process of applying tungsten carbide coatings through high-temperature technology is widely used in cutting tools, tungsten carbide wear parts, mechanical seals, molds, engine parts, as well as in the aerospace and oil and gas equipment industries. The spraying process directly affects the performance of the product, so having professional staff complete the spraying work can bring about better results.
