A brief description of the degreasing process of vacuum plating!

After vacuum plating extracts the air from the chamber and reaches a certain vacuum level, vacuum plating heats the tungsten wire in the chamber by electricity. When a certain temperature is reached, the metal wire placed on the tungsten wire is vaporized and then deposited evenly on the surface of the workpiece with the rotation of the workpiece in the chamber, forming a metal film by vacuum plating.

The common metals used for vacuum plating are aluminum, nickel, copper, etc. However, due to the melting point and process control, aluminum plating becomes the most popular practice.

In order to get a good surface treatment on the surface of the parts of hardware series, the pretreatment before vacuum plating must be operated strictly and carefully in order to reach the standard of pretreatment.

Vacuum plating intermediate degreasing, vacuum plating this process is alkaline degreasing can be finalized by immersion method or jet cleaning method.

The process conditions used in the lye degreasing before vacuum plating depends on the material of the plated parts and the oil content of the surface. Parts with alkali-resistant materials such as vacuum plating can use strong alkaline cleaning solution, and the temperature of vacuum plating degreasing can be higher in order to improve the efficiency and speed of degreasing, while parts with materials such as zinc, aluminum, copper, etc. cannot use strong alkaline solutions such as sodium hydroxide, and the temperature cannot be too high to avoid Corrosion, vacuum plating in the use of hard water prepared acid and alkali washing solution, should be added to the complexing agent.

After the general alkaline degreasing solution, the surface of vacuum plating parts has not yet reached the shipping standard required by the surface treatment, vacuum plating must also carry out electrolytic degreasing treatment process to meet the shipping requirements or the next process.