What is the operation method of plasma spraying?

In plasma spraying, two important components can be seen: a nozzle that sprays sufficient plasma heat, and a powder particle injector Plasma spraying with a high-speed plasma flow of up to 2000O3C This causes the melting and coating of porcelain and metal materials The characteristics of plasma flow are controlled by the negative electrode nozzle, gas type, gas pressure, gas mixture ratio, and electric arc power level At the outlet of the plasma nozzle, the coating powder was not transported through the sprayer. When new particles of powder arrive, the powder accelerates and heats up without being pulled, causing it to collide with high temperature and high kinetic energy, forming a thermal barrier layer on the surface.

Plasma spraying is a material surface strengthening and modification technology that has wear resistance, corrosion resistance, high temperature oxidation resistance, electrical insulation, thermal insulation, radiation resistance, reduced grinding and sealing performance Plasma spraying technology uses a direct current driven plasma arc as a heat source to heat materials such as ceramics, alloys, metals, etc. to a molten or semi molten state, and spray them at high speed onto the surface of the pre treated workpiece to form a surface with strong adhesion Plasma spraying is also used for medical purposes.

Plasma spraying is a type of thermal spraying process with high quality, reliability, and durability. This process generates enough energy to melt the spray coating material, resulting in extremely high flexibility. And it can effectively control the thickness, porosity, roughness, and hardness of plasma sprayed coatings.

In order to save time and improve work efficiency, it is usually necessary to place multiple components on the workbench for painting at the same time At the same time, monitoring personnel need to observe the operation of the production room through heat-resistant glass in the monitoring room After painting, it is necessary to clean and remove dust from the workshop.

When painting, pay attention to controlling and adjusting the heat and the painting distance from the parts. Distance too far can lead to waste, while distance too close can result in uneven melting and burnt black spots. So, after painting, it is usually necessary to check. Check if there are particles on the surface of the first floor and if the sprayed surface color is red. If there are no issues, proceed with the second spray painting; If there are any issues, repaint or manually remove the black spots.

Plasma can be divided into three categories:

1. Low temperature and low-pressure plasma, ionization degree less than 1%, temperature only 50-250 degrees.

2. High temperature and low-pressure plasma ionizes more than 1% of the gas and has a temperature of tens of thousands of degrees. The kinetic energy of ions, free electrons, and non ionized atoms approaches thermal equilibrium Thermal spraying utilizes this type of plasma.

3. High temperature and high-pressure plasma, with temperatures reaching several hundred million degrees, used for research on nuclear fusion.