Knowledge | 2022-05-26

Ultrasonic cleaning before electroplating.


In the process of electroplating, sometimes the quality of electroplating coating is not good. One of the factors affecting the quality of electroplating coating is that the cleaning is not enough. Whether decorative plating or functional plating, we will pursue higher plating quality, so cleaning before plating is particularly important, how to improve the quality of cleaning before plating? Small series recommend to everyone ultrasonic cleaning process. The ultrasonic cleaning process is added to the conventional plating pretreatment process, and the ultrasonic cavitation is used to clean the workpieces, especially the workpieces with complicated shapes and structures or with holes, it can not only shorten the cleaning time but also improve the cleaning quality.

Electroplating is an important part of industrial production. Before electroplating, ultrasonic cleaning technology has become a new type of technology. The traditional process before electroplating uses acid to clean the workpiece, which causes heavy environmental pollution and a poor working environment. At the same time, the biggest disadvantage is that after pickling and derusting the workpiece with a complicated structure, the residual acid is difficult to rinse off. The application of ultrasonic cleaning technology to electroplating, after pre-treatment, not only can make the surface of the workpiece and the dirt in the gap, and quickly peel off, but also can carry on the thorough cleaning of the residual acid on the workpiece, so that the plating layer will not rust firmly, and thus improve the rate of finished products, reduce the probability of scrap or rework. Compared with the traditional cleaning methods such as multi-stage chemical plating and electrolytic degreasing, ultrasonic cleaning has a better effect on the cleaning process before electroplating.

The advantages of ultrasonic cleaning before electroplating:

1. Can simplify the cleaning process, ultrasonic cleaning super cleaning ability, often cleaning up several times the traditional cleaning effect.

2. The traditional cleaning technology is always unsatisfactory for complex electroplate parts, but ultrasonic cleaning can clean complex electroplate parts thoroughly.

3. Ultrasonic cleaning with a special plating cleaning agent can quickly and thoroughly complete the cleaning purposes, greatly improving the production efficiency.

4. Another advantage of ultrasonic cleaning in cleaning before plating is that the workpiece will not be damaged during cleaning, and the rate of workpiece cleaning damage is much lower than using traditional cleaning methods.

Typical ultrasonic cleaning process of electroplating pretreatment

Ultrasonic deoiling

The process of oil removal is called ultrasonic oil removal, in which the parts adhering to the oil are placed in the oil removal liquid and the oil removal process is under the Sonication of a certain frequency. After the introduction of Ultrasonic Technology into conventional electroplating pretreatment process, combined with oil removal solvent and temperature, it can greatly enhance the oil removal process, shorten oil removal time, improve oil removal quality and reduce the consumption of chemicals In particular, for many complex shape parts, small precision parts, parts with surfaces difficult to remove dirt and parts made of insulating materials have a significant degreasing effect, can save time manual labor, to prevent damage to parts.

Ultrasonic washing

In the pre-treatment process of electroplating, after conventional chemical or electrolytic deoiling (or after ultrasonic deoiling), an ultrasonic washing procedure is added, it can not only clean the liquid residue in the process of conventional chemical oil removal or electric oil removal (or ultrasonic oil removal) but also can clean the dirt which has not been cleaned thoroughly, especially for those workpieces with complex external structure and many holes, the special cavitation phenomenon of ultrasonic wave can be cleaned completely inside again to ensure the effect of follow-up electroplating.

In short, the introduction of Ultrasonic Cleaning Technology in the electroplating pretreatment process can not only greatly reduce the time of workpiece cleaning, but also significantly improve the quality of cleaning. But choosing an ideal and suitable ultrasonic cleaning machine should not only analyze and understand the dirt on the surface of the workpiece, then choose the appropriate ultrasonic frequency and power, but also consider the influence factors of ultrasonic cleaning. With the development of ultrasonic technology, I believe that ultrasonic cleaning technology will be more and more widely used in the future, which will certainly promote the development of the electroplating and electroplating cleaning process.

Ultrasonic cleaning before electroplating.