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The Process Of Teflon Coating, How To Spray
- Jul 07, 2018 -

First, the processing method of the dispersion coating is to make the coating material distribute uniformly in the solvent to form the dispersion liquid, and the solid matter is mixed in the liquid to produce a kind of wet processing. The mixture is atomized by high pressure air and sprayed on the workpiece surface.

The processing steps of the dispersion coating are as follows: The preparation of the workpiece, the spraying of the wet dispersion coating, the drying of the coating, and the preparation of the sintered workpiece: in order to make the surface of the workpiece obtain sufficient surface adhesion, All grease on the surface must be removed first. We use organic solvents to dissolve oils and heat them to about 400 °C to completely volatilize. The next step is to use a sandblasting mechanical way to clean the parts and make their surface rough. The bonding ability between the coating and the surface layer of the workpiece can be improved by the application of adhesive agent and primer. Wet dispersion coating spraying: spray coating materials should be uniform. Coating thickness depends on the coating system used. Coating thickness may vary from several microns to 200 microns or 0.2 mm. Drying: heating the wet coating in the oven at a temperature below 100 °C Until most of the solvent has evaporated. Sintering: this step of sintering is to heat the workpiece to a higher temperature until an irreversible reaction occurs in the coating material II, powder coated with teflon coating powder coating method is a dry processing? The coating material used here is very fine solid particle shape. The use of this coating method avoids the divergence of the solvent and the subsequent adhesion of the coating. PTFE for non stick pan HY001.jpg

The coating particles are adhered to the workpiece by the appropriate method, and the coated powder melts in the oven. The process of powder coating is divided into the following steps: 1: 1, 2 for the preparation of workpiece, 3 for powder spraying and 3 for powder melting. Preparation of workpiece: in order to obtain sufficient surface adhesion of workpiece surface? All grease on the surface must be removed first. We use organic solvents to dissolve oils and heat them to about 400 °C to completely volatilize. The next step is to use a sandblasting machine to clean the parts and make them rough. The bonding ability between the coating and the surface layer of the workpiece can be improved by using the adhesive agent primer. Powder spray: powder particles are blown out of the trap by compressed air. On its way to the nozzle? There is an area of static electricity. Because the particles carry the same charge, they repel each other in their flight paths and form a uniform cloud spray. The grounding of the work piece to be sprayed forms an electrostatic area between the gun and the workpiece. Powder particles are attracted to the workpiece and attached to it. Powder melting: in coating technology high-temperature spraying and low-temperature spraying have different principles. If the temperature of high temperature spraying substrate is higher than the melting temperature of powder material, the powder particles will melt in the process of spraying. The processing method of low temperature spraying is that the substrate temperature is lower than the melting temperature of powder material. It is then melted in the oven.

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