Application Of Ultrasonic Cleaning Technology in Machinery Manufacturing Industry

In the mechanical manufacturing process, the workpiece in paint, electroplating, heat treatment, rust prevention, assembly, and assembly process need cleaning, cleaning is a process repeated in a variety of processes, cleaning quality is directly related to the machining performance of mechanical products and the overall performance of the product. The traditional cleaning methods include manual brushing, immersion washing in ODS solvent, electrolytic cleaning, spray cleaning, high-pressure spray cleaning, gas phase cleaning, etc., which have the disadvantages of high labor intensity, unstable cleaning quality and low efficiency. Ultrasonic cleaning as an advanced, efficient, green non-ODS modern cleaning technology, in the machinery industry is more and more widely used.

1, in addition to grease, including emulsified oil, lubricating oil, rust oil and other grease. The workpiece must be cleaned before rust preservation, plating and painting. The key of ultrasonic cleaning is to select cleaning liquid containing targeted surfactant and emulsifier.

2, rust removal and oxide steel parts in rolling or heat treatment, the surface will generate a layer of 5~10μm iron oxide, ultrasonic cleaning can be used to replace the strong acid, strong alkali, reduce the public hazard, avoid hydrogen embritriness. As a coating pretreatment process, the coating quality is improved.

3, in addition to dirt in addition to dirt cleaning mainly include:

(1) in addition to carbon: carbon is fuel and oil combustion under high temperature anoxic conditions generated by hard carbide, and metal surface adsorption, intermolecular binding strength is great, it is difficult to remove with general methods, may also damage the surface finish of the piston. Use ultrasonic cleaning, clean thoroughly, do not damage the surface quality of the workpiece, and high efficiency.

(2) greasy and mud: the parts are polluted by oil, and then fall into the dust, forming a strong greasy adhesion; Sludge is a mixture of oil, tar, oxyacid, carbides, ash and water. The combined strength can reach 10~15kPa. It is thoroughly cleaned by ultrasonic.

③ Cleaning before plating: the cleaning effect before plating and painting directly affects the quality of plating. Dewaxing and polishing paste cleaning has always been a difficult problem in electroplating industry, ultrasonic cleaning will solve this problem. As a coating pretreatment process, the coating quality is improved.

Ultrasound cleaning technology has been widely used in the cleaning of mechanical parts (especially precision parts), workpiece surface treatment (such as rust removal, degreasing, phosphating, passivation, etc.), pretreatment of plating and other fields, is a good method for cleaning bearings, oil pumps, nozzles, hydraulic components, clock parts, hardware tools, automobile parts, etc. With the progress of technology, ultrasonic cleaning application is increasingly expanding, in addition to machinery and related industries, at present, has been applied to electronics, medical and health, arts and crafts, medicine and family and other fields.

The development trend of ultra sonic cleaning is the upsizing of cleaning devices, mainly because cleaning objects are increasing, ultrasonic power is improving, on the one hand from the original hundreds of watts to the current tens of kilowatts, or even higher; On the other hand, a number of small and medium power ultrasonic generator power sources are combined to replace the high power ultrasonic power sources. In addition, ultrasonic cleaning another development trend is the automation of ultrasonic cleaning device, ultrasonic cleaning multi step cleaning, from cleaning to drying, using modern control technology, ultrasonic cleaning production line automation.