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Metal plasma treatment machine plasma metal surface treatment technology pretreatment

Metal plasma treatment machine plasma metal surface treatment technology pretreatment:
        The surface coating technology of metal plasma processor is widely used in anti-fouling, anti-icing, anti-corrosion, abrasion resistance, high temperature resistance, insulation, etc. The bonding strength of the coating and the substrate plays a vital role in the protective performance of the coating. The appropriate plasma surface treatment technology on the metal can remove the contaminants, loose layers and other substances that affect the bonding force on the surface of the substrate. At the same time, it can improve the wetting performance between the coating and the substrate, and it can also increase the surface roughness of the substrate. It forms more "anchor" bite points with the sprayed particles, thereby enhancing the adhesion of the coating to the metal surface and prolonging the life.

Plasma processor

Metal plasma treatment machine
        The excellent adhesion of the coating to the substrate is the prerequisite for the coating to maintain its anti-corrosion effect. Research has found that plasma metal surface treatment technology pretreatment can improve the quality of the coating and the life of the coating. Therefore, the quality of the surface pretreatment directly determines the life and the life of the coating. Characteristics, the service life of the coating can be effectively improved by pretreatment of the metal surface in different ways.
        The surface pretreatment functions of the metal plasma treatment machine mainly have the following 3 points:
        1) Trim the metal surface. Friction of the metal surface can not only cause plastic deformation of the metal surface, but also increase the surface temperature, thereby accelerating the diffusion speed of N and 0 in the atmosphere to the metal center, and making the hardness of the metal surface change continuously in the direction of the metal body. , To form a denatured layer and improve the surface properties of the metal. In addition, the coating will shrink to a certain amount during the curing and cooling process, which may cause the coating to fall off at the edge of the substrate. Therefore, a certain trimming of the metal surface before spraying can ensure that the fragile zone of the coating will not fall off due to shrinkage.
        2) Purification. Through the metal plasma processor pretreatment process, the oxide layer, grease and other pollutants on the surface can be removed, so that the surface can reach the cleanliness necessary for spraying. Rust removal generally adopts methods such as pickling and alkaline washing, electrolysis and polishing, and degreasing generally adopts methods such as organic solvent cleaning, lye boiling and washing, emulsion cleaning and electrolysis.
        3) Coarse. Roughening refers to the use of certain means to form a uniform rough structure on the surface of the purified substrate. This uneven structure can not only increase the bonding area, but also form more "anchor" bonding points with the coating, and enhance the bonding between the coating and the substrate. strength. On the other hand, plasma surface roughening treatment can activate the surface of the metal substrate and improve the spreading characteristics of the coating on the metal surface, thereby increasing the bonding strength between the coating and the surface of the substrate.

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