Factors related to ultrasonic cleaning effect of embossing machine.PVC embossing machine

　　1, ultrasonic intensity. That is, ultrasonic power per unit area. The effect of ultrasonic cleaning depends on the cavitation, and the generation of cavitation is related to the ultrasonic intensity. Under normal circumstances, the unit area ultrasonic power of more than 0.3W/cm2 (output power is generally greater than 1W) aqueous solution can produce cavitation. Within a certain range, the greater the ultrasonic intensity, the more obvious the cavitation effect, that is, the better the cleaning effect. However, too high power density will cause surface erosion of the workpiece due to too strong cavitation, so that the workpiece is damaged. In addition, when the power density increases to a certain extent, there will be saturation phenomenon, and the ultrasonic cleaning effect will decrease.

　　Ultrasonic embossing roller

　　The power density critical point of cavitation is also related to the frequency, the higher the frequency, the greater the power density of cavitation, for example, when 16-20khz, the power density critical point is about 0.3--0.4W/cm2; When 26--30KHz, the power density is selected as 0.5--0.8W/cm2; At 30-40khz, the power density should be selected as 1-1.2W /cm2.

　　2, ultrasonic frequency. The ultrasonic vibration frequency has a great influence on the cleaning effect, which is because the ultrasonic frequency has a great influence on the cavitation effect. It is proved by practice that cavitation is easy to be excited at low frequency under the same power condition. That is, the lower the frequency, the better the cavitation effect, but the louder the noise. On the contrary, the higher the frequency, the worse the cavitation effect and the smaller the noise.

　　3, cleaning liquid temperature. Cleaning temperature is an important factor affecting the cleaning speed, the appropriate increase in the temperature of the cleaning solution, can enhance the cavitation capacity, shorten the cleaning time, but over a certain temperature, due to the corresponding increase in steam pressure but the cavitation effect is reduced, so must maintain a certain temperature range, such as water solvent cleaning solution is generally about 45 ° C, trichlorene cleaning solution at about 75 ° C. When choosing a cleaning solution, it is necessary to consider that the viscosity of the cleaning solution should be small and the surface tension should be small to facilitate the cavitation of the cleaning solution.

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