Operating principle and advantages of plasma cladding equipment
Plasma cladding equipment is an advanced surface treatment technology equipment. It uses the high temperature generated by the plasma arc to melt metal powder, ceramic powder or other materials, and quickly cools it to form a solid coating, thereby improving the wear resistance of the workpiece surface. , corrosion resistance, anti-oxidation and other properties. The working principle of plasma cladding equipment mainly includes the generation and control of plasma arc, the transportation and melting of powder, the formation and cooling of coating and other processes. First, the equipment generates a plasma arc through high-frequency arc ignition or contact arc ignition. The high temperature generated by the plasma arc melts metal powder, ceramic powder or other materials to form a molten pool. At the same time, by controlling parameters such as power, current and voltage of the plasma arc, the temperature, depth and shape of the molten pool can be precisely controlled. Then, the powder is transported into the molten pool through a powder feeder or wire feeder, where it is rapidly melted under the action of the plasma arc and forms a good metallurgical bond with the base material. Finally, the coating forms a fine grain structure during the rapid cooling process, thereby improving the hardness, wear resistance, corrosion resistance and other properties of the workpiece surface.
The characteristics of plasma cladding equipment mainly include the following advantages:
1. The working temperature is high and a good metallurgical bond is formed between the coating and the substrate;
2. There is a wide range of coating materials to choose from, and composite coatings of a variety of materials can be achieved;
3. The coating thickness is controllable, and multi-layer cladding can be carried out as needed;
4. The coating quality is stable and the surface roughness is low;
5. High production efficiency and can realize automated production.