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Technical characteristics of ultrasonic cleaning machine
Technical characteristics of ultrasonic cleaning machine:
Ultrasound cleaning is based on cavitation, i. e. the rapid formation and implosion of numerous bubbles in the cleaning solution. The resulting impact will peel off the dirt on the inner and outer surfaces of the workpiece immersed in the cleaning fluid. With the increase of ultrasonic frequency, the number of bubbles increases and the impact force of blasting decreases. Therefore, high frequency ultrasound is especially suitable for cleaning small particles of dirt without breaking the surface of the workpiece.
Cavitation: Cavitation is the transmission of ultrasonic waves to liquids by means of high frequency conversion of compression force and pressure reduction interaction more than 20,000 times per second. In the process of pressure reduction, vacuum nucleus bubbles are produced in liquid. In the process of compression, vacuum nucleus bubbles produce strong impact force when crushed under pressure, which strips the dirt on the surface of the cleaned products, so as to achieve the purpose of precise cleaning.
Direct inflow: The phenomenon that ultrasound flows along the direction of sound propagation in liquid is called direct inflow. When the intensity of sound wave is 0.5W/cm2, the direct inflow can be seen with naked eyes, and the flow is generated perpendicular to the vibration surface. The velocity of flow is about 10cm/s. Through this direct inflow, the micro-oil dirt on the surface of the cleaned object is stirred, and the cleaning liquid on the surface of the dirt also generates convection. The solution of the dissolved dirt is mixed with the new solution, which speeds up the dissolution and plays a great role in the removal of the dirt.
Acceleration: Acceleration caused by liquid particles. For the high frequency ultrasonic cleaning machine, the cavitation effect is not significant. At this time, the cleaning mainly relies on the acceleration impact particles under the action of liquid particle ultrasound to clean the dirt with ultra-precision.
Ultrasound cleaning is more complicated than conventional cleaning methods, especially the surface of workpiece, such as some mechanical parts with uneven surface and blind holes, some products with special small cleanliness requirements, such as clocks and precise mechanical parts, electronic components, circuit board components, etc. Ultrasound cleaning can achieve ideal results. The principle of ultrasonic cleaning is that the high-frequency oscillation signal emitted by the ultrasonic generator is converted into high-frequency mechanical oscillation by transducer and transmitted to the medium-cleaning solvent. The same dense forward radiation of ultrasound in the cleaning solution causes the liquid flow to produce tens of thousands of tiny bubbles. These bubbles form and grow in the negative pressure region of longitudinal propagation of ultrasound, and close rapidly in the positive pressure region. In the process of this so-called "cavitation" effect, bubble closure can form instantaneous high pressure over 1000 atmospheric pressure, which continuously produces instantaneous high pressure like a series of small "explosions" continuously impacting on the surface of the object, so that the dirt in the surface and crevice of the object can be quickly peeled off, so as to achieve the purpose of surface purification of the object.
Compared with other cleaning methods, ultrasonic cleaning has the following advantages: good cleaning effect, high cleanliness and uniform cleanliness of all workpieces; fast cleaning speed, high production efficiency, safe and reliable without manual contact with cleaning liquid; clean deep holes, slits and concealed parts of workpieces; no damage to the workpiece surface and save money. Solvents, thermal energy, workplaces and artificial advantages.
Because of its fast speed, good quality and great reduction of environmental pollution, ultrasonic cleaning technology is being applied in more and more industrial sectors. In the specialized and group production enterprises, ultrasonic cleaner has gradually replaced the traditional soaking, scrubbing, pressure washing, vibration cleaning and steam cleaning methods. The high efficiency and cleanliness of the ultrasonic cleaner are due to the penetration and cavitation shock guilt of the sound wave propagation in the medium. So it is easy to clean the parts with complex shape, inner cavity and hollow parts. For general degreasing, rust-proof, phosphating and other process, it can be completed in two or three minutes under the action of ultrasound. Its speed can be increased several times or even several dozen times than the traditional method, and its cleanliness can reach high standards. This is true in many pairs. Where the product surface quality and productivity requirements are high, the results that are difficult to achieve or irreplaceable by other treatment methods are highlighted.
Ultrasound cleaning is based on cavitation, i. e. the rapid formation and implosion of numerous bubbles in the cleaning solution. The resulting impact will peel off the dirt on the inner and outer surfaces of the workpiece immersed in the cleaning fluid. With the increase of ultrasonic frequency, the number of bubbles increases and the impact force of blasting decreases. Therefore, high frequency ultrasound is especially suitable for cleaning small particles of dirt without breaking the surface of the workpiece.
Cavitation: Cavitation is the transmission of ultrasonic waves to liquids by means of high frequency conversion of compression force and pressure reduction interaction more than 20,000 times per second. In the process of pressure reduction, vacuum nucleus bubbles are produced in liquid. In the process of compression, vacuum nucleus bubbles produce strong impact force when crushed under pressure, which strips the dirt on the surface of the cleaned products, so as to achieve the purpose of precise cleaning.
Direct inflow: The phenomenon that ultrasound flows along the direction of sound propagation in liquid is called direct inflow. When the intensity of sound wave is 0.5W/cm2, the direct inflow can be seen with naked eyes, and the flow is generated perpendicular to the vibration surface. The velocity of flow is about 10cm/s. Through this direct inflow, the micro-oil dirt on the surface of the cleaned object is stirred, and the cleaning liquid on the surface of the dirt also generates convection. The solution of the dissolved dirt is mixed with the new solution, which speeds up the dissolution and plays a great role in the removal of the dirt.
Acceleration: Acceleration caused by liquid particles. For the high frequency ultrasonic cleaning machine, the cavitation effect is not significant. At this time, the cleaning mainly relies on the acceleration impact particles under the action of liquid particle ultrasound to clean the dirt with ultra-precision.
Ultrasound cleaning is more complicated than conventional cleaning methods, especially the surface of workpiece, such as some mechanical parts with uneven surface and blind holes, some products with special small cleanliness requirements, such as clocks and precise mechanical parts, electronic components, circuit board components, etc. Ultrasound cleaning can achieve ideal results. The principle of ultrasonic cleaning is that the high-frequency oscillation signal emitted by the ultrasonic generator is converted into high-frequency mechanical oscillation by transducer and transmitted to the medium-cleaning solvent. The same dense forward radiation of ultrasound in the cleaning solution causes the liquid flow to produce tens of thousands of tiny bubbles. These bubbles form and grow in the negative pressure region of longitudinal propagation of ultrasound, and close rapidly in the positive pressure region. In the process of this so-called "cavitation" effect, bubble closure can form instantaneous high pressure over 1000 atmospheric pressure, which continuously produces instantaneous high pressure like a series of small "explosions" continuously impacting on the surface of the object, so that the dirt in the surface and crevice of the object can be quickly peeled off, so as to achieve the purpose of surface purification of the object.
Compared with other cleaning methods, ultrasonic cleaning has the following advantages: good cleaning effect, high cleanliness and uniform cleanliness of all workpieces; fast cleaning speed, high production efficiency, safe and reliable without manual contact with cleaning liquid; clean deep holes, slits and concealed parts of workpieces; no damage to the workpiece surface and save money. Solvents, thermal energy, workplaces and artificial advantages.
Because of its fast speed, good quality and great reduction of environmental pollution, ultrasonic cleaning technology is being applied in more and more industrial sectors. In the specialized and group production enterprises, ultrasonic cleaner has gradually replaced the traditional soaking, scrubbing, pressure washing, vibration cleaning and steam cleaning methods. The high efficiency and cleanliness of the ultrasonic cleaner are due to the penetration and cavitation shock guilt of the sound wave propagation in the medium. So it is easy to clean the parts with complex shape, inner cavity and hollow parts. For general degreasing, rust-proof, phosphating and other process, it can be completed in two or three minutes under the action of ultrasound. Its speed can be increased several times or even several dozen times than the traditional method, and its cleanliness can reach high standards. This is true in many pairs. Where the product surface quality and productivity requirements are high, the results that are difficult to achieve or irreplaceable by other treatment methods are highlighted.