Painting  Service

VMT can provide you with customized metal processing services. These include mold making, forging, die casting, and stamping processing. There are surface treatments such as anodizing, plating, printing, polishing, logo printing and etching. Our advanced inspection and testing equipment can ensure the quality of your raw materials and finished parts. When you send a CAD file to us for a free quote, we invite you to experience our professional services at an unbeatable price.

What is painting?

The process of powder spraying is: the powder spray gun is connected, the workpiece is grounded, and the powder coating is fed into the spray gun by compressed air from the powder supply system. The high voltage generated by a high voltage electrostatic generator is added to the tip of the spray gun. When the powder is sprayed from the gun nozzle, it forms a circuit to form charged paint particles. It is attracted to the corresponding workpiece with the opposite polarity under the action of electrostatic force. The sprayed powder increases, and the accumulation and accumulation increase. When it reaches a certain thickness, due to the electrostatic transfer, the adsorption will not continue, so that the entire volume can obtain a certain thickness of powder coating, and then the powder is melted, leveled, and solidified by heat, that is, a hard coating film is formed on the surface of the workpiece.

Advantages of painting

painting has the following advantages:

  • The construction efficiency is high. For large-area operations, the construction staff can install multiple electrostatic spray guns and perform multiple spraying at the same time, which can effectively shorten the spraying time and improve the spraying efficiency;
  • Powder spraying is the corona discharge of the electrostatic spray gun to make the powder adhere to the workpiece. After curing, a coating film will be formed on the surface of the workpiece. The coating has good quality, high adhesion and mechanical strength, corrosion resistance, short curing time, no primer.
  • A thicker coating can be obtained with one coating, for example, a coating of 100-300μm, with a common solvent coating, about 4-6 times, and a powder coating can achieve this thickness in one pass. The corrosion resistance of the coating is very good.
  • Powder spraying can conceal some traces that cannot be done by spray paint, and it is not easy to scratch. The important thing is that the spray powder is an environmentally friendly material, does not contain VOC, is non-toxic, and does not pollute the environment;
  • The powder electrostatic spraying process does not contain organic solvents, the coating process does not produce solvent vapor, and there is no air pollution, so it does not require strict environmental protection measures, and powder electrostatic spraying does not have the difficulties of exhaust gas emission control.
  • The work efficiency of the powder sprayer is 10 times that of the manual sprayer; it does not use water, it is suitable for large-scale prevention and control and water shortage areas; the prevention and control are timely and the operation is simple;
  • Adopting new technology such as powder electrostatic spraying, which has high efficiency and is suitable for automatic assembly line coating; the powder utilization rate is high and can be recycled, and the powder recycling rate is basically 100%;
  • Powder coatings began to be used in protection and electrical aspects. With the development of technology, it has been widely used in the automotive industry, electrical insulation, corrosion-resistant chemical pumps, valves, cylinders, pipes, outdoor steel components, steel furniture, castings, etc. Surface coating.

The difference between sandblasting and painting:

Sandblasting: The process of cleaning and roughening the surface of the substrate by the impact of high-speed sand flow; generally suitable for AL materials, and al plates are generally sandblasted (bright) and oxidized, divided into two types: coarse and fine.

painting : painting generally goes through the processes of cleaning, degreasing, painting, and drying. A processing method in the baking process, high-pressure spray gun painting  to the workpiece is a special spray gun operation method.

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