With the rapid development of modern production technology, more and more high-tech products have been put into use. Processing technology brings a lot of convenience to our life. Say to Dacromet should be understood by many people.
Dacromet coating has applications in many industries. Dacromet technology is now combined with a lot of coatings. It can play a very good anti-corrosion effect on the surface of the product. Why do people know why it can rot the material?
Dacromet coating, appearance is matt silver-gray, composed of very fine sheet metal zinc, aluminum and chromate components.
After the workpiece was deoiled and shot blasted, Dacromet was dip-coated.
Dacromet liquid is a kind of water-based treatment liquid. Metal parts are dip-coated or spray-brushed in a water-based treatment solution, then they are solidified in the furnace, baked at about 300°C, and formed into inorganic coatings of zinc, aluminum and chromium.
When cured, the moisture in the coating film, organic (cellulose) and other volatile components volatilize, and the oxidizing property of the high chromium salt in Dacromet's mother liquor makes the electrode potential have a large negative value of the elemental zinc sheet. After the aluminum foil slurry and the iron matrix, a chromium salt compound of Fe, Zn, and Al is formed.
Because the film layer is obtained directly after the substrate, the anti-corrosion layer is extremely dense. Under the corrosive environment, the coating will form numerous primary batteries, the negative Al and Zn salts will be etched away until only possible to corrode the substrate itself after it is consumed.
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