Introduction to the gas spring coating process

Most manufacturers on the market still use more traditional spray paint, as we all know, the advantage of spray painting is low cost, and the operation is relatively simple, generally a factory has one or two masters to get it, but the painting process also has shortcomings such as: the smell is more unpleasant, and the corrosion resistance is not outstanding enough, and for environmental protection this piece is a headache for various manufacturers.

So how exactly is the painting process? Generally, the following steps are followed:

Degreasing - washing - removing the bottom oxide scale (or do this step first) - surface adjustment - phosphating - washing - drying - painting - drying (drying temperature depends on the paint used by the manufacturer)

Here, we can talk about the phosphating process by the way, then most manufacturers use zinc phosphating, the process is also low cost, easy to operate, the general gas spring manufacturers can directly change the groove, basically do not add anything. Phosphating also has shortcomings, such as: in use will produce a certain phosphating slag, while affecting the phosphating film made of the gas spring itself, and when the slag content in the phosphating liquid gradually increases, it is easy to adsorb on the car body, these slag is easy to cause early blistering and falling off of the coating, and reduce the adhesion and corrosion resistance of the vehicle coating. "After the phosphating residue is brought into the electrophoresis tank, it will contaminate the electrophoresis bath, causing blockage of the ultrafiltration membrane and reducing the service life of the ultrafiltration membrane." Blocking nozzles and circulating pipes, causing unnecessary groove. "Easy to block the heat exchanger, too much nitric acid cleaning will not only shorten the life of the heat exchanger, but also there will be a risk of nitric acid leakage into the phosphating solution."

With the human requirements for environmental protection and high-quality products, there are also updated coating processes on the surface of gas springs to meet the needs of the market.

Autophoresis coatings, officially known as autophoresis coatings, are also known as chemically deposited paints or acidic coatings. This method is characterized by economical coating and film forming methods, simple coating equipment, low energy consumption, easy operation, low coating cost and strong rust resistance; Organic solvents are almost completely free, less pollution and good for the environment. Since the industrialization of swimming paint in the mid-70s of the 20th century, it has been mainly used for the coating of metal surfaces such as cars and other metal parts.