introduce:
Ultrasonic spraying is a unique spraying technology, which is a spraying method based on ultrasonic atomizing nozzle technology. The material to be sprayed is first in a liquid state, and the liquid can be solution, sol, suspension, etc. The liquid coating is first atomized into fine particles by an ultrasonic atomizing device, and then uniformly coated on the surface of the substrate by a certain amount of carrier gas. , thereby forming a coating or film. Compared with traditional pneumatic two-fluid spraying, ultrasonic atomizing spraying can achieve better uniformity, thinner coating thickness and higher precision. At the same time, since the ultrasonic nozzle can be atomized without air pressure assistance, the use of ultrasonic spraying can significantly reduce the splash of paint during the spraying process and achieve the purpose of saving paint. The paint utilization rate of ultrasonic spraying is 4 times that of traditional two-fluid spraying. above.
Principle:
There are two theoretical explanations for the principle. They are the micro-shock wave theory and the surface tension wave theory, respectively.
On the one hand, the micro-shock theory explains that the cavitation effect of ultrasonic waves in liquid media leads to the generation and atomization of micro-shock waves. The theory believes that the cavitation effect is the direct cause of liquid atomization. When the cavitation bubble bursts, except for thermal radiation and light radiation, the rest are radiated in the form of shock waves. When the micro shock wave reaches a certain intensity, it will cause the atomization of the liquid. When the micro shock wave reaches a certain intensity, it will cause the atomization of the liquid.
On the other hand, the surface tension theory believes that the generation of droplets is due to the instability of the liquid surface wave caused by the atomization of the liquid. Specifically, when an ultrasonic wave of a specific sound intensity passes through the liquid, the ultrasonic wave for the gas-liquid interface forms a surface tension. Once the vibration surface of the interface reaches a certain amplitude value, the force is perpendicular to the surface tension, and the liquid droplets fly out. The peaks form fog. The theory states that surface tension waves produce droplets at their peaks, and the droplet size is proportional to the wavelength.
composition:
The whole machine is composed of ultrasonic atomizing nozzle, special driving power supply, XYZ three-axis linkage servo system, intelligent operating system, liquid supply system, low-speed air shaping device, shell box and so on.
nozzle:
The nozzle is a device that obtains high energy and high speed of the atomized medium in the atomization device, and it is also a key component that plays an important role in the atomization efficiency and the stability of the atomization process. Its function is to control the flow and flow pattern of the atomized medium. The atomizing nozzle is actually a converter that converts the kinetic energy of the high-pressure gas into the energy of the metal surface. The nozzles are fabricated from high-strength titanium alloys and other proprietary metals, making them particularly chemical-resistant and offering superior acoustic performance. We provide six types of ultrasonic atomizing nozzles: long mouth type -- wide spray type -- probe type -- scattering type -- gathering type -- line spray type.
Advantage:
1. The spray pattern is easy to form, suitable for precision coating applications
2. Ultrasonic atomized spray coating reduces downtime in critical manufacturing processes
3. Ultra-low flow capacity of ultrasonic atomization, can work intermittently or continuously
4. Highly controllable spray volume, more reliable spray quality
5. Low energy consumption, high atomization efficiency, and less restriction on atomized liquid
6. It can reduce waste and air pollution caused by back spraying and save costs
7. No pressure, no noise, no moving parts to wear, no blockage
8. The atomizing nozzle is made of titanium material, which has strong height and corrosion resistance
9. It can work at high temperature of hundreds of degrees, and the maximum temperature exceeds 500 degrees. Therefore, it can also be used for metal milling, with simple process and high efficiency.
application:
Ultrasonic nano sprayers are now used in many fields, especially in the fields of alternative energy and nanomaterials, glass industry, medical treatment, printed circuit boards, semiconductors, etc. Such as:
1. Hard coating and other thin film protective glass coating systems,
2. Ultrasonic spray system for molten metal producing solder powder,
3. Ultrasonic stent coating system,
4. Ultrasonic selective melting system,
5. Spray photoresist coating system for semiconductor lithography, etc.