Introduction of WC spray powder

       

By adding a transition layer between the bonding bottom layer and the surface ceramic layer, the tungsten carbide spraying powder makes the composition and structure transition from the substrate to the coating surface in a gradient and smooth, avoiding the mutation of the structure and performance of the substrate to the coating, thereby alleviating the interface The stress concentration of tungsten carbide spray powder improves the bonding of the coating interface and greatly improves the performance of the coating. Tungsten carbide spray powder technology adopts independently controlled two-way internal powder feeding method. When preparing composite or gradient coatings, high melting point ceramic powder and low melting point alloy powder can be sent into different temperature zones of the plasma flame.

Tungsten carbide sprayed powder is then sprayed onto the surface of the pretreated substrate at a certain speed by means of the flame itself or compressed air, and deposited to form a surface coating with various functions. Tungsten carbide sprayed powder is made of fuel gas or arc Provided energy. Tungsten carbide spraying powder. The company uses advanced supersonic flame spraying technology to spray super wear-resistant tungsten carbide coating on various parts. The wear resistance is 2 to 4 times that of other surface treatment processes. Tungsten carbide spraying powder is general stainless steel Tens of times, the superiority of the tungsten carbide spray powder supersonic process is due to its super high spray speed and lower surface temperature of the workpiece (usually 120~200 degrees Celsius)

The bottom layer is too thin and does not bond firmly with the workpiece substrate; the coating is too thick and uneven, resulting in a large internal stress of the coating. When the internal stress of the coating exceeds the strength of the coating itself, the coating appears Cracking: In the spraying inner hole, the cooling and shrinking of the coating is easy to cause peeling, so the tungsten carbide spraying powder is sprayed as thin as possible to reduce the shrinkage during cooling. In addition, if the tungsten carbide sprayed powder is cooled too quickly, it will also cause the coating to peel off. Arc spraying uses an electric arc that burns between two continuously fed metal wires to melt the metal. The tungsten carbide sprayed powder is melted by high-speed airflow. The technology of atomizing metal and accelerating the atomized metal particles to spray them to the workpiece to form a coating.

Tungsten carbide spray powders (especially plasma spraying and spray welding processes) have to produce a variety of harmful factors, so when using such methods, appropriate protective measures must be taken. It should be pointed out that any advanced technology is not possible, and tungsten carbide spray powder must be determined according to various factors such as feasibility, reliability, and economy according to working conditions. Tungsten carbide sprayed powder metal and alloys are widely used and diverse materials in thermal spraying. Since most metals are malleable, they can be made into powders and wires. Various required physical and chemical properties can be obtained by changing the composition of the elements in the alloy.