28K/40K/122K 60W Multi-frequency Industrial Ultrasonic Bath Transducers For Degreasing and rust removal of electroplated parts

A. Classification of piezoelectric chips: P4 series with black chips and P8 series with yellow chips;
B. Frequency classification: low frequency series (17~23KHz), intermediate frequency series (25~28KHz), medium and high frequency series (33~60KHz) and high frequency series (68-200KHz);
C. Power classification: 30W series (including 35W), 50W series (including 60W), 100W series (including 80W) and other unconventional power;
D. Shape classification: straight cylindrical and trumpet type;

Frequency selection
The frequency of the transducer is inversely proportional to the wavelength, and the wavelength is related to the diameter of the cavity (strictly speaking, it is caused by the longer nucleation time at low frequency), and the diameter of the cavity is related to its explosion pressure. Generally, the higher the frequency, the smaller the wavelength, the smaller the diameter of the cavity, the lower the explosion pressure, but the higher the density of the cavity and the better the permeability.
Based on the above principle: Low frequency (17~23KHz): When the cleaning object is dirty or difficult to be cleaned, and the explosion impact does not damage the surface of the cleaning object, a low frequency series transducer should be selected. Common industries are: magnetic industry, auto maintenance industry, textile industry, etc. Note that the noise of this series is loud, so it is best to do sound insulation treatment.
Intermediate frequency (25~28KHz): When the cleaning object is slightly dirty or the cleaning is moderate, and the explosion impact does not damage the surface of the object to be cleaned, the intermediate frequency series transducer should be selected. This series of industries are the most widely used. Common ones are: machining industry, electroplating industry, catering industry, etc.
Medium and high frequency (33~60KHz): The medium and high frequency series transducer should be selected when the cleaning object is lighter and easy to clean, or when the explosion impact on the surface of the cleaning object requires damage. Common industries include: precision parts, glass glasses, electronic components, circuit boards, etc.;
High frequency (68-200KHz): The cleaned object is very lightly dirty and easy to clean. When it is required to prohibit any damage to the surface of the cleaned object from the impact of the explosion, a high-frequency series transducer should be selected. Common industries are: semiconductors, special high-precision parts, etc.

Ultrasonic transducers are widely used. According to the application industries, they are divided into industry, agriculture, transportation, life, medical treatment and military. According to the realized function, it is divided into ultrasonic processing, ultrasonic cleaning, ultrasonic detection, detection, monitoring, telemetry, remote control, etc.; according to the working environment, it is divided into liquid, gas, biological body, etc.; according to the nature, it is divided into power ultrasonic, detection ultrasonic, ultrasonic imaging, etc. .

Ultrasonic transducers are piezoelectric ceramics that resonate at ultrasonic frequencies. The piezoelectric effect of the material converts electrical signals into mechanical vibrations. The working principle of medical ultrasound transducers (ultrasound probes) is basically the same, and its interior usually contains an electrical energy storage element and a mechanical vibration system. When the transducer is used as a transmitter, the electric oscillation signal sent from the excitation power supply will cause the electric field or magnetic field in the electric energy storage element of the transducer to change. This change affects the mechanical vibration system of the transducer through a certain effect. A driving force is generated to enter the vibration state, thereby driving the medium in contact with the mechanical vibration system of the transducer to vibrate and radiate sound waves into the medium. The process of receiving sound waves is just the opposite. The external sound waves act on the vibrating surface of the transducer, which causes the mechanical vibration system of the transducer to vibrate. With the help of a certain physical effect, it causes the electric field or electric field in the energy storage element of the transducer. The magnetic field changes accordingly, causing the electrical output of the transducer to generate a voltage and current corresponding to the acoustic signal.

Features of ultrasonic vibrator:
1. High performance: high mechanical Q value, high conversion efficiency and good quality;
2. Ultrasonic vibrator transducer has large amplitude and superior performance;
3. Heat resistance of ultrasonic vibrator transducer: Piezoelectric ceramic material has good heat resistance, can expand the temperature range of use, at the same time, the Q value is high, the resonance impedance is small, and the heat generation is small;
4. The appearance of the ultrasonic vibrator transducer is clean, free of rust, no obvious dents and scratches.

The ultrasonic vibrator should be placed in a dry place to prevent the ultrasonic vibrator from getting damp and affecting normal work. If the ultrasonic vibrator is damp, put it in an oven and set about 100 ℃ to dry for 2 hours or use a hair dryer to remove moisture until the resistance value is normal; the ultrasonic vibrator is degummed. After the ultrasonic vibrator is degummed, the output power of the ultrasonic power supply is normal, but due to the vibrator and vibration If the surface connection is not good, the vibrator will be burnt out if you work for a long time. The degumming of the ultrasonic vibrator generally requires a professional ultrasonic manufacturer to repair or replace it.
Maintenance of ultrasonic vibrator:
If you have not used it for more than a week, please cover it with a dust cover (plastic bag); Except that the lifting screw has received lubricating oil before leaving the factory, other parts do not need any lubricating agent; Regularly check the internal vibrator output line for wear; Please wipe the dust with a clean cloth. Dry compressed air should be used to blow away the dust in the machine every six months. It is strictly forbidden to use various fluxes when cleaning the side plate and surface of the welding machine. Neutral detergent should be used and lightly wiped; When the water filter cup reaches 13 water level, please drain the water; every month the welding machine is used, the sliding parts should be wiped clean and re-coated with high-quality lubricating grease; always pay attention to the safety of the machine position.

Ultrasonic vibrator installation process:
1. Preparation tools: Argon arc welding, No. 10 hexagon wrench, chromium iron tin wire, 2.5 square high temperature wire, 2*2.5 cable wire, vibrator glue, (wire stripper, casing, cable tie, sandblasting machine, Pipe fittings, etc.).
2. Welding screws: Calculate the arrangement of the vibrator, weld the screws at the cleaned position, and then clean the surrounding of the screw, be sure to make it flat, so as not to affect the installation of the vibrator.
3. Glue configuration: Squeeze the A glue around the screw, then squeeze the B glue next to the A glue, and then quickly mix the AB glue with a small iron rod to make it fully mixed.
4. Install the vibrating head: twist the transducer a little harder to squeeze out the air and excess glue between the bottom and the contact surface of the cylinder bottom, so that the vibrator is more tightly integrated with the stainless steel.
5. Curing and condensing: curing in a place with relatively high room temperature, 4-8 hours can be connected, 24 hours later, you can power on the test machine.
Note: 1. A metal nail machine can also replace argon arc welding.
2. The welding screws must be fully welded, otherwise they will fall off easily.
3. Regarding curing, temperature should be considered for the length of time. If the temperature is low, the time will be longer, and if the temperature is high, it will be faster. It is recommended to operate at room temperature.

Ultrasonic vibrator, also called ultrasonic vibrating head, ultrasonic vibrating head, is a kind of ultrasonic transducer and the core component of ultrasonic cleaning machine. Industry standard name: Ultrasonic transducer, belongs to piezoelectric ceramic material, one of the main accessories of ultrasonic cleaning machine. In terms of power, a single ultrasonic vibration head is 60W and 100W. The frequencies are: 20KHZ, 25KHZ, 28KHZ, 40KHZ, 68KHZ, 80KHZ, 100KHZ, or higher; the difference in shape is: straight cylindrical shape, horn shape, etc.

Principle of ultrasonic vibrator:
1. In the ultrasonic vibrator, piezoelectric elements and internal electrodes are alternately laminated, and have external electrodes that are connected to the internal electrodes;
This ultrasonic vibrator has: an internal electrode group, which is roughly divided into 4 parts along the second and third directions orthogonal to the lamination direction as the first direction; the first external electrode group and the second external electrode group are connected to the internal The electrode group is turned on; by applying an alternating voltage to the first external electrode group and the second external electrode group, the longitudinal vibration mode in which the main vibration occurs in the second direction and the main vibration in the third direction are simultaneously excited The bending vibration mode that occurs, resulting in ultrasonic elliptical vibration;
The ultrasonic vibrator is configured to have a conductive film for electrode connection, which is formed along a surface perpendicular to the lamination direction, and separates predetermined external electrodes of the first external electrode group and predetermined external electrodes of the second external electrode group. The external electrodes are electrically connected. The device that uses piezoelectric effect to convert between electrical energy and sound energy is called piezoelectric transducer. The ultrasonic transducer provided by our company uses self-produced high-quality piezoelectric ceramic components, carefully designed, processed, and tested. It is a bolt The tightening type can generate stable ultrasonic waves even when the load changes. It has the characteristics of large amplitude, high electro-acoustic conversion rate, low heat generation, high reliability and good consistency.

The mechanism of ultrasonic cleaning is to make use of the physical effects such as cavitation, radiation pressure and sound flow in the cleaning liquid. It can exfoliate the machinery produced by the dirt on the cleaning parts, and can also promote the chemical reaction between the cleaning liquid and the dirt, so as to achieve the purpose of cleaning the object. The frequency of the ultrasonic cleaning machine can be selected by 10~500 kHz according to the size and purpose of the cleaning material, generally more than 20~50 kHz. With the increase of the frequency of ultrasonic transducer, Langerhans oscillator, longitudinal oscillator and thickness oscillator can be used. In the miniaturization aspect, radial vibration and flexural vibration are also adopted. Ultrasonic cleaning has become more and more widely used in various industries, agriculture, household equipment, electronics, automobile, rubber, printing, aircraft, food, hospital and medical research.

Frequency selection

The transducer frequency is inversely proportional to the wavelength. The wavelength is related to the diameter of the bubble (strictly speaking, it is due to the low frequency of nucleation), and the bubble diameter is related to the explosion pressure. Generally, the higher the frequency, the smaller the wavelength, the smaller the bubble diameter, and the lower the explosion pressure, but the higher the bubble density and the better the permeability.

Based on the above principles:

Low frequency (17~23KHz): If the dirt to be cleaned is heavy or difficult to clean, and the impact of the explosion on the surface of the object to be cleaned is not great, the low frequency series transducer should be selected. Commonly used industries are: magnetic industry, auto industry, textile industry, etc. Note that this series is noisy and is best soundproofed.

Medium frequency (25~28KHz): If the dirt to be cleaned is slightly heavy or the cleaning is difficult, and the impact of the explosion on the surface of the object to be cleaned is not great, the medium frequency series transducer should be selected. This series of industries is the most widely used, common: mechanical processing industry, electroplating industry, catering industry and so on.

Medium and high frequency (33~60KHz): The medium and high frequency series transducers should be selected when the dirt to be cleaned is light, easy to clean, or when the impact of the explosion on the surface of the object to be cleaned is required. Commonly used industries are: precision parts, glass glasses, electronic components, circuit boards, etc.;

High frequency (68-200KHz): The dirt to be cleaned is very light and easy to clean. When it is required to prevent any damage to the surface of the object to be cleaned by explosion, the high frequency series transducer should be selected. Commonly used industries are: semiconductors, special high-precision parts, etc.

28K/40K/122K 60W Multi-frequency Industrial Ultrasonic Bath Transducers For Degreasing and rust removal of electroplated parts