Surface treatment is an integral part of the light industry, including electroplating of mechanical parts, coating of metal and non-metal chassis and cabinets, coating of optical glass or lens, etc. the product cleaning of electroplating process has high requirements for the surface cleanliness of workpieces. Ultrasonic cleaning technology has become a new electroplating cleaning process demand and an ideal technology to meet the process requirements.

超声波清洗电镀前处理的应用，主要利用超声波在液体中产生的空化效应，可以清洗掉工件表面沾附的油污，配合适当的清洗剂，可以迅速地对工件表面实现高清洁度的处理。另外，利用超声波清洗技术，还可以在很大的范围内替代强酸、强碱的作用，大大减少对环境的污染，并改善工人的劳动环境，降低劳动强度，对保护生态环境，作出贡献。

The application of ultrasonic cleaning electroplating pretreatment mainly uses the cavitation effect produced by ultrasonic in liquid to clean the oil stain on the workpiece surface. With appropriate cleaning agent, it can quickly realize high-definition cleanliness treatment on the workpiece surface. In addition, the use of ultrasonic cleaning technology can also replace the role of strong acid and alkali in a large range, greatly reduce the pollution to the environment, improve the working environment of workers, reduce labor intensity, and contribute to the protection of the ecological environment.

超声波清洗工艺情况简单介绍：

Brief introduction to ultrasonic cleaning process:

1.抛光件表面抛光膏的清洗

1. Cleaning of polishing paste on the surface of polishing parts

一般情况下，抛光膏常常采用石蜡调和，石蜡分子量大，熔点较高，常温下呈固态，是较难清洗的物质，传统的办法是采用有机溶剂清洗或高温碱水煮洗。采用超声波清洗则可使用水基清洗剂，在中温条件下，几分钟内将工件表面彻底清洗干净，常用工艺流程是 ：① 浸泡一②超声波清洗一③清水(净水)漂洗。

In general, polishing paste is often mixed with paraffin. Paraffin has large molecular weight, high melting point and is solid at room temperature. It is a difficult substance to clean. The traditional method is to clean with organic solvent or boil with high-temperature alkali water. If ultrasonic cleaning is adopted, water-based cleaning agent can be used. Under medium temperature conditions, the workpiece surface can be completely cleaned within a few minutes. The common process flow is: ① soaking - ② ultrasonic cleaning - ③ rinsing with clean water (purified water).

2.表面有油及少量锈的冷轧钢板

2. Cold rolled steel plate with oil and a small amount of rust on the surface

冷轧钢板表面一般有油、污或少量铁锈，要洗干净比较容易，但经一般方法清洗后，工件表面仍残留一层非常细薄的浮灰，影响后续加工质量，有时不得不再采用强酸浸泡的办法去除这层浮灰。而采用超声波清洗并加入适当的清洗液，可方便快捷地实现工件表面彻底清洁，并使工件表面具有较高的活性，有时甚至可以免去电镀前酸浸活化工序。

The surface of cold-rolled steel plate generally has oil, dirt or a small amount of rust, which is easy to clean. However, after general cleaning, there is still a very thin layer of floating ash on the workpiece surface, which affects the subsequent processing quality. Sometimes, the method of strong acid immersion has to be used to remove this layer of floating ash. Using ultrasonic cleaning and adding appropriate cleaning solution can easily and quickly realize the thorough cleaning of the workpiece surface, and make the workpiece surface have high activity. Sometimes, it can even avoid the acid leaching process before electroplating.

3.表面有氧化皮和黄锈的工件

3. Workpieces with oxide scale and yellow rust on the surface

传统的办法是采用盐酸或硫酸浸泡清洗。如采用超声波综合处理技术，可以快捷地在几分钟内同时去除工件表面的油、锈 ，并避免了因强酸清洗伴随产生的氢脆问题。

The traditional method is to soak and clean with hydrochloric acid or sulfuric acid. If the ultrasonic comprehensive treatment technology is adopted, the oil and rust on the workpiece surface can be removed quickly and simultaneously in a few minutes, and the problem of hydrogen embrittlement caused by strong acid cleaning can be avoided.

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