When doing surface treatment, air spraying is a relatively widely used coating process at present. It can be sprayed by the airflow of compressed air to form paint mist and form a paint film on the surface of the workpiece.what is the detailed process ofGuangzhou sheet metal processing?
- Annealing:After the product is formed, it is easy to generate internal stress, and the place where the stress is concentrated after painting is easy to crack, so it is necessary to use annealing to eliminate the stress.
- Remove oil：Before painting, it is necessary to degreasing, cleaning the workpiece with usual gasoline or alcohol, and then chemically degreasing, thoroughly cleaning the residual lye on the surface of the workpiece, then washing with water and drying.
- Electrostatic precipitator：Plastic products are insulators, and their surface resistance is prone to generate static electricity. After being charged, it is easy to absorb dust and adhere to the surface. At this time, high-voltage ionized air flow can be used to remove static electricity and dust removal.
- Spray：The spraying is carried out according to the thickness, and the first spraying needs to be dried before the second spraying can be carried out. The painted parts will have better flame retardant performance.
- Drying：After coating, it can be dried at room temperature or baked at 60°C for half an hour.
How much do you know about the detailed process of Guangzhou sheet metal processing technology? Only the surface treatment of the workpiece can reduce dust adsorption, enhance hardness and scratch resistance, cover some surface defects after molding, and make the surface gloss of the workpiece more beautiful.
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