Aluminum die casting products surface treatment

Aluminum die casting productssurface treatment

Aluminum alloy die casting products, surface treatment generally: powder spraying (powder spraying), paint, oil spraying, oxidation, sandblasting, electroplating and so on. According to the thickness and finish of the surface treatment of aluminum die casting products.

1, powder spraying is to spray the powder coating to the surface of the workpiece with powder spraying equipment. Under the action of electrostatic, the powder will be evenly adsorbed on the surface of the workpiece to form a powdery coating. Powder coating after high temperature baking, leveling and curing, into different effects (different kinds of powder coating effects) of the final coating; Powder spraying is superior to spray painting in mechanical strength, adhesion, corrosion resistance, aging resistance and other aspects, and its cost is also lower than that of spray painting with the same effect.

Powder spraying, generally divided into outdoor powder and indoor powder. Patterns can be adjusted to a variety of effects, such as smooth, sand, foam, etc.

2, the real paint baking process is to use aluminum alloy phosphating after spraying, spraying after baking, such coating is not only anticorrosive and bright wear resistance, not easy to fall off

Aluminium die casting products Surface pretreatment

(1) 1 oil removal; 2 water; 3 derusting; 4 washed; 5 watch; 6 washed; 7 phosphating; 8 washed; 9 washed; 10 drying;

Three, oil spraying is the name of the surface coating processing of industrial products, oil spraying processing generally specializing in plastic oil spraying, screen printing, pad printing processing; EVA, rubber and other shoe material color, screen printing. With spraying line, screen printing line, pad printing machine and other equipment, and according to customer requirements, the production of high temperature resistance, friction resistance, uv resistance, alcohol resistance, gasoline resistance and other products. Processing scope: electronic products: ordinary spray paint, PU paint, rubber paint (feel paint), (such as: U disk, MP3, camera, network peripheral products and other electronic products. Can spray the difficult problems encountered in injection molding process, such as gas lines, fusion joints, etc., have experience in spraying rubber paint (hand paint), have hand paint rework technology.

4, oxidation Aluminum alloy surface oxidation, suitable for conductive oxidation, aluminum or aluminum profiles, suitable for anodic oxidation.

Aluminum alloy oxidation color is generally natural, sky blue

1. Anodic oxidation is carried out under the condition of high voltage, which is an electrochemical reaction process; Conductive oxidation is a pure chemical reaction that requires no electricity but immersion in a liquid solution. 2. Anodic oxidation takes a long time, often dozens of minutes, while conductive oxidation only takes a few seconds. 3. Anodic oxidation film has several microns to dozens of microns, and hard and wear-resistant, and conductive oxidation film generated only about 0.01-0.15 microns. It doesn’t wear very well, but it conducts electricity and resists atmospheric corrosion, which is its advantage.

5, the sand blasting

Spraying a layer of sand on the surface of aluminum alloy parts can enhance the friction coefficient of the contact surface and enhance the reliability of the connection. Sand thickness, grain is also very different.

6, electroplating

Electroplating is a process in which metal or alloy is deposited on the surface of the workpiece by electrolysis to form a uniform, dense and cohesive metal layer, which is called electroplating. Simply understood, it is a physical and chemical change or combination. Application of electroplating process we generally use for the following purposes: A. Anti-corrosion B. Protective decoration C. To prevent wear and tear！