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Metal spraying process - surface treatment

2019-11-04 16:36  Times of view:

Almost any metal that can be made into a wire can be sprayed. Metal spraying has many important uses, and metallization can provide decorative effects for the product.

Metallization technology has certain requirements:

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The metallization process must perform the pretreatment of the substrate surface. The film and substrate of the metallization process are mechanically combined, and must be cleaned in order to obtain good mechanical bonding. The wire must be free of rust, grease-free, smooth and conform to standards. The substrate should be frosted.

The spraying environment of the metallization process should be higher than 5 degrees Celsius. If the air is humid, it must be carried out indoors. The thermal spraying method is carried out by thermal spraying, and the distance is preferably 100-200 mm. The thermal spraying is a manual operation, and has certain disadvantages compared with the vacuum coating by means of equipment plating.

Zunhua Baorui Titanium Equipment

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When spraying, the substrate and the spray gun should be vertical, the angle should not be less than 45 degrees, and the maximum distance should not exceed 200mm.

The thickness of the spray coating should be well grasped. Generally, the thickness of the spray coating should be layered and sprayed. The temperature of the substrate should not exceed 100 degrees Celsius. The moving speed of the spray gun should be uniform. 300-400mm/s is preferred. Touch the sprayed surface.

Zunhua Baorui Titanium Equipment

vacuum coating machine,pvd coating machine,pvd vacuum machine,vacuum ion coating machine,multi-arc ion coating machine

The qualified metallization surface should be uniform and no bubble, no adhesion metal. The appearance of the inspection can use a magnifying glass. Not only the appearance quality should be qualified, but also the thickness of the coating should be qualified. If defects are found during the inspection, it should be re-plated. .

Common metal plating

Zunhua Baorui Titanium Equipment

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Chrome: Chrome is a silver-white metal with a slight blue color. There are five main types, which are the most widely used plating products. It is plated with protective chrome, black chrome plating, hard chrome plating, porous chrome plating, and chrome white chrome.

Plating alloy: Alloy is the development of industrial production. Some products require the characteristics of alloy, such as cobalt alloy. Its appearance is light rose, it has strong corrosion resistance, and the effect of plating is very warm. For example, tin alloy has good corrosion resistance, high wear resistance and hardness, and good polishing performance.

Silver plating: a precious metal with high whiteness and high plasticity. Silver has good electrical conductivity and can improve the electrical conductivity of the product. Silver is a very beautiful metal and is often used for decoration.

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