来源:http://www.sinokohl.com/ 时间: 2022-05-04 浏览次数: 2

1. Electrolytic cleaning is a cleaning method to remove the dirt on the metal surface by electrolysis. Electrolysis is a process of chemical decomposition of substances under the action of electric current. In the process of electrolysis, the dirt on the metal surface began to fall off, which accelerated the peeling under the impact of ultrasonic wave. The removal of sulfide, gas gas, broken resin, animal and vegetable oil, mineral oil, paraffin, carbon deposit and oxide layer on the metal surface by electrolytic method is called electrolytic degreasing.
2. When the current passes through the aqueous solution containing electrolyte with special formula, oxygen is generated near the positive electrode of the electrolytic cell and hydrogen is generated at the negative electrode. Put the metal parts to be cleaned into the positive pole of the electrolytic cell. In the electrolytic process, fine hydrogen will be generated on the metal surface. These small bubbles promote the dirt to peel off from the metal surface
3. Ultrasonic cleaning is the process of converting the transducer from electrical energy to mechanical energy by using 40KHz high-frequency power supply. In this process, the transducer transmits huge energy to the solution of the cleaning tank, generates positive pressure and negative pressure areas in the liquid, forms tens of thousands of hole bubbles, and constantly forms an explosion, impacts the surface of the cleaned metal object, and quickly separates the dirt on the metal surface.
4. The circulating system is composed of corrosion-resistant magnetic pump and filter, which can circulate automatically, so that the dirt falling off after cleaning can be quickly isolated by the filter cotton core and reduce the floating objects on the liquid surface. At the same time, it can accelerate the electrolysis of the solution and purify the utilization rate of the solution.
5. The application of ultrasonic cleaning machine in coating treatment technology. The treatment process of ultrasonic cleaning machine before coating is very important. The general conservative processes are degreasing, water washing, hydrochloric acid derusting, water washing, neutralization, water washing, surface conditioning, water washing, phosphating, water washing and drying. The biggest disadvantage of this process is that it is difficult to wash the residual acid after pickling and derusting the parts with complex structure, especially after phosphating the welding assembly, the residual liquid contained in the gap affects the processing of the next process.
6. After the workpiece is sprayed for a short time, the corrosion phenomenon appears along the crevice, damaging the coating surface. Seriously affect the appearance and internal quality of products. Such as motorcycle wheel, fuel tank, frame, anti-theft door, etc. Through the research and practice of ultrasonic cleaning machine technology in phosphating treatment in recent years, good results have been achieved in improving product spraying quality and preventing coating parts from rusting. In the processes of degreasing, derusting, water washing, surface conditioning, phosphating and so on, the liquid penetrating into the welding seam of the workpiece rinsed by the ultrasonic cleaning machine is difficult to discharge, and the water washing can not completely remove it. Under wet and hot conditions, the inclusions are very easy to cause yellowing and rust of the workpiece.
7.如果这些残液在烘干过程中不能完全干固,随后粉末喷涂以高温烘干时,残液由于热膨胀的作用将渗出焊缝,影响涂料与金属表面的结合,造成涂层的附着力下降甚至脱离。.超声波清洗机工艺参数超声波清洗温度是影响清洗速度的重要因素,适当提高清洗温度可增加空化能力、缩短清洗时间,但超越一定温度,由于蒸气压力增加反而降低空化作用,因此必需坚持一定的温度。试验标明水溶性介质一般在50℃ 5效果最佳。
7. If these residual liquids cannot be completely dry and solid in the drying process, and then when the powder is sprayed and dried at high temperature, the residual liquid will seep out of the weld due to the effect of thermal expansion, affecting the combination of the coating and the metal surface, resulting in the decrease or even separation of the adhesion of the coating Ultrasonic cleaning machine process parameters ultrasonic cleaning temperature is an important factor affecting the cleaning speed. Appropriately increasing the cleaning temperature can increase the cavitation capacity and shorten the cleaning time. However, if it exceeds a certain temperature, the cavitation will be reduced due to the increase of steam pressure. Therefore, it is necessary to adhere to a certain temperature. The test shows that the effect of water-soluble medium is the best at 50 ℃ 5.
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