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Ultrasonic cleaning before plating process

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Ultrasonic cleaning before plating process

  • Categories:News Center
  • Author:Chason
  • Origin:
  • Time of issue:2019-12-11
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(Summary description)The product pre-treatment process for electroplating is very important. The general traditional process uses acid liquid to treat the workpiece, which has a serious environmental pollution and a poor

Ultrasonic cleaning before plating process

(Summary description)The product pre-treatment process for electroplating is very important. The general traditional process uses acid liquid to treat the workpiece, which has a serious environmental pollution and a poor

  • Categories:News Center
  • Author:Chason
  • Origin:
  • Time of issue:2019-12-11
  • Views:
Information

The product pre-treatment process for electroplating is very important. The general traditional process uses acid liquid to treat the workpiece, which has a serious environmental pollution and a poor working environment. At the same time, the biggest disadvantage is that it is difficult to remove the residual acid after pickling and rusting of complex parts Rinse well. After the workpiece is electroplated, the time is not long. Corrosion occurs along the gap, which damages the surface of the plating layer and seriously affects the appearance and internal quality of the product. After the ultrasonic cleaning technology is applied to the pre-plating treatment, not only the dirt on the surface and the gap of the object can be quickly peeled off, but also the sprayed layer of the electroplated parts is firm and will not return to rust.

Ultrasonic cleaning

Utilizing the cavitation effect produced by the ultrasonic wave in the liquid, the oil contamination on the surface of the workpiece can be washed away. With appropriate cleaning agents, the surface of the workpiece can be quickly cleaned.

Electroplating process requires higher surface cleanliness, and ultrasonic cleaning technology is an ideal technology to achieve this requirement. Using ultrasonic cleaning technology, it can replace the solvent to clean the oil; it can replace the electric degreasing oil; it can replace the strong acid etching to remove the rust and scale on the surface of carbon steel and low alloy steel.

For several common workpiece surface conditions before electroplating, the process of ultrasonic cleaning is introduced:
1. Cleaning of polishing paste on the surface of polishing parts: In general, polishing paste is often blended with paraffin wax. Paraffin wax has a large molecular weight, a high melting point, and is solid at room temperature. It is a difficult substance to clean. The traditional method is to use organic solvents for cleaning. Or boiling in hot alkaline water has many drawbacks. With ultrasonic cleaning, a water-based cleaning agent can be used. Under moderate temperature conditions, the surface of the workpiece is thoroughly cleaned in a few minutes. The common process is: ① soaking → ② ultrasonic cleaning → ③ rinse with clean water (purified water).
2. Cold-rolled steel plate with oil and a small amount of rust on the surface: The surface of the cold-rolled steel plate is generally oily, dirty, or with a small amount of rust. It is easier to clean, but after cleaning by ordinary methods, a very thin floating layer remains on the workpiece surface Ash, which affects the subsequent processing quality, and sometimes has to use strong acid soaking to remove this layer of floating ash. By using ultrasonic cleaning and adding a suitable cleaning solution, the surface of the workpiece can be cleaned quickly and conveniently, and the surface of the workpiece can be highly active, and the process of acid leaching activation before plating can sometimes be eliminated.

Ultrasonic cleaning

3. Workpieces with oxidized scale and yellow rust on the surface: The traditional method is to wash with hydrochloric acid or sulfuric acid. Such as the use of comprehensive ultrasonic treatment technology, you can quickly and simultaneously remove oil and rust on the surface of the workpiece in a few minutes, and avoid the hydrogen embrittlement problems associated with strong acid cleaning. After plating, various treatments are applied to the plating layer to enhance various properties of the plating layer, such as corrosion resistance, resistance to discoloration, and solderability.

Dehydration treatment: add dehydrating agent in water, such as bright nickel plating after treatment.
Passivation treatment: improve the corrosion resistance of the coating, such as galvanizing.
Anti-tarnishing treatment: Add anti-tarnishing agent in water, such as silver plating, tin plating, gold-plated imitation, etc.

Improving solderability processing: such as tin plating, so the quality of the post-processing process directly affects the quality of these coatings.

The above is the related content of "Ultrasonic Cleaning of Electroplating Pretreatment Process". The information is provided by Guangdong Chuangzhi, a 25-year-old coating production line manufacturer. For more information about coating production lines, please follow us for updates!

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Provide customers with all kinds of non-standard coating production lines, coating equipment, environmental protection equipment and other overall solutions. At present, they have been widely recognized in the auto parts industry, furniture industry, musical instrument industry, cookware industry, home appliance industry, hardware industry and other fields. He used to be Honda, BYD, Wuzhou Dragon, Lizhong Wheel, Meishan.   Provide customers with all kinds of non-standard coating production lines, coating equipment, environmental protection equipment and other overall solutions. At present, they have been widely recognized in the auto parts industry, furniture industry, musical instrument industry, cookware industry, home appliance industry, hardware industry and other fields. He used to be Honda, BYD, Wuzhou Dragon, Lizhong Wheel, Meishan.

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