High Applicability Of Ultrasonic Cleaning Machine
Ultrasonic Cleaning Machine cleaning refers to the removal of the surface of the workpiece liquid and solid pollutants, so that the surface of the workpiece to achieve a certain degree of cleanliness. Secondly, its cleaning process is the interaction between cleaning medium, pollutant and workpiece surface, which is a complicated process of physical and chemical action. Secondly, its cleaning is not only related to the nature, type, form and degree of adhesion, but also to the physicochemical properties of the cleaning medium, the cleaning performance, Ultrasonic Cleaning Machine the material of the workpiece, the surface state, and the conditions of cleaning such as temperature, pressure and additional ultrasonic vibration, mechanical external force and other factors. Therefore, the selection of scientific and reasonable cleaning process, the process analysis must be carried out, and then select the appropriate power ultrasonic cleaning machine.
Ultrasonic cleaning machine structure generally has ultrasonic power supply and cleaning device or separate layout of the two forms, general small power cleaning machine with one-piece structure, and high-power cleaning machine using split structure.
The split structure of ultrasonic cleaning machine consists of three main parts: cleaning cylinder, ultrasonic generator and ultrasonic transducer.
Cleaning cylinder: The cleaning cylinder is used for loading cleaning liquid and cleaning the workpiece of stainless steel containers, most of the workpiece can be installed in the mesh frame, and then put the person in the cylinder cleaning.
Ultrasonic Generator: Ultrasonic cleaner used in ultrasonic generator, Ultrasonic Cleaning Machine from the use of the type of components can be divided into tube-type, SCR-type and transistor-type. In recent years has developed a high-power "power module" approach. Ultrasonic Cleaning Machine Its output power from dozens of watts to thousands of watts, operating frequency from 15khz-40khz.
Ultrasonic cleaning machine used by the ultrasonic generator, has the following characteristics:
A) with different depth of cleaning fluid, the resonant frequency and impedance of transducer vary greatly. However, the practice shows that the proper amount of cleaning material can be stabilized in a certain value.
B Generally speaking, because of the small change in the cleaning load, Ultrasonic Cleaning Machine the complex frequency automatic tracking circuit can not be required.
c) Practical ultrasonic generators, most of which use high-power self-excited feedback oscillators.
Ultrasonic transducer: Transducer for ultrasonic cleaning machine.
There are mainly the following:
A The magnetostrictive transducer is used in the domestic use of a window-type transducer, which is welded to the bottom of the cleaning cylinder, and then with a wire to the window around a certain number of rolls. This kind of transducer can withstand the higher power, and the reliability is good, Ultrasonic Cleaning Machine the service life is long. The disadvantage is that the efficiency is lower than the piezoelectric transducer, and the price of raw material nickel is expensive.
B Piezoelectric transducer at home and abroad most of the ultrasonic cleaning machine is the piezoelectric transducer. This transducer generally consists of two piezoelectric ceramic chips. A cleaning machine with a plurality of transducers, bonded by bonding agent at the bottom of the cleaning cylinder and by parallel connection to form a cleaning machine transducer. Universal Ultrasonic Cleaning Machine cleaning parts are highly applicability, Ultrasonic Cleaning Machine has been widely used in electronics, watches and clocks, optics, machinery, automobiles, aviation, atomic energy industry, medical equipment and many other industries.
Structure characteristics of Ultrasonic Cleaning machine
Ultrasonic cleaning machine is mainly composed of ultrasonic transducer, ultrasonic generator and cleaning groove, the ultrasonic generator converts the 50Hz alternating current into a super audio electric oscillation signal, which is transmitted to the ultrasonic transducer by cable. The cleaning tank is a container that holds the cleaning fluid and the cleaned parts. The acoustic transducer converts the Super audio power into mechanical vibration and radiates the ultrasonic wave through cleaning the trough wall to the cleaning liquid in the trough. A micro-bubble (called a cavitation nucleus) in a liquid vibrates under the action of sound waves, Ultrasonic Cleaning Machine and when the sound pressure or sound intensity reaches a certain value, the bubble grows rapidly and then closes abruptly. When the bubble is closed, the shock wave generates 10,110 PA pressure and local high temperature around the bubble, which is called ultrasonic cavitation. The immense pressure generated by cavitation destroys insoluble contaminants and causes them to disperse in solution. Steam-type cavitation has direct and repeated impact on the fouling layer, on the one hand, the adsorption of the dirt and the surface of the cleaning parts, on the other hand, can cause the fatigue damage of the dirt layer to be detached. Gas-type bubble vibration on the solid surface scrub, the dirty layer once the seam can be drilled, bubbles can also "drill into" cracks for vibration, so that the dirt off. Due to cavitation, Ultrasonic Cleaning Machine the two liquids are rapidly dispersed and emulsified at the interface, and when the solid particles are wrapped in oil and attached to the surface of the cleaning piece, the oil is emulsified and the solid particles fall off themselves. The ultrasonic wave in the cleaning fluid will produce the positive and negative alternating sound pressure, impact cleaning parts, and because of the non-linear effect of the sound flow and micro-acoustic flow, and ultrasonic cavitation in the solid and liquid interface will produce a high-speed micro-sound flow, all these effects can destroy dirt, Ultrasonic Cleaning Machine remove or weaken the boundary layer, increase agitation, diffusion effect, Accelerate the dissolution of soluble contaminants and strengthen the cleaning effect of chemical cleaning agents. Thus, any liquid can be immersed in the sound field where the existence of cleaning, and cleaning speed, high quality, especially suitable for cleaning parts surface complex, such as holes, slit, such as meticulous cleaning, easy to achieve cleaning automation. For the general oil removal, rust, phosphating and other processes, in the ultrasonic action only two or three minutes can be completed, its speed than the traditional method can be raised to dozens of times times, cleanliness has reached a high standard. In some occasions, water agents can be used instead of organic solvents for cleaning, or to reduce the concentration of acid-base. For some harmful to human health cleaning, such as cleaning radioactive contaminants can be achieved remote control and automatic cleaning. Ultrasonic cleaning Machine also has its limitations, such as the strong sound reflection of materials such as metal, ceramics and glass cleaning effect, and the sound absorption of large materials such as cloth, rubber and viscosity of large dirt cleaning effect is poor.