High Frequency 40Khz 500w Ultrasonic Welding Transducer with Steel
Booster
Description:
Ultrasonic vibrator is an energy conversion device, and its
performance description and evaluation requires many parameters.
The characteristic parameters of the transducer include resonance
frequency, frequency bandwidth, electromechanical coupling
coefficient, electroacoustic efficiency, mechanical quality factor,
impedance characteristics, frequency characteristics, pointing Sex,
emission and receiving sensitivity, etc. Ultrasonic vibrators for
different applications have different performance parameters. For
example, for an emissive transducer, the transducer is required to
have large output power and high energy conversion efficiency;
Transducers require a wide frequency band and high sensitivity and
resolution. Therefore, in the specific design process of the
ultrasonic vibrator, the relevant parameters of the transducer must
be rationally designed according to the specific application.
Specifications:
| Model | QR-3040-4BZ-BJ |
| Frequency | 40khz |
| Output power | 500 watt |
| Ceramic disc Diameter | 30mm |
| Qty of ceramic discs | 4pcs |
| Capacitance | 5.1-7.5nf |
| Application | Ultrasonic Plastic Welding machine |
Factors affecting ultrasonic welding:
Speaking of the weldability of thermoplastics, it is impossible to
mention the requirements of ultrasonic bonding for various resins.
The most important factors include polymer structure, melting
temperature, flexibility (hardness), and chemical structure.
The non-crystalline polymer molecules are disordered in
arrangement, with a significant temperature (Tg glass transition
temperature) which gradually softens the material, melts and flows.
Such resins are generally effective in transmitting supersonic
vibrations and achieving good soldering over a wide range of
pressures/amplitudes.
The semi-crystalline polymer molecules are arranged in order, with
a distinct melting point (Tm melting temperature) and a re-freezing
point. The solid crystalline polymer is elastic and absorbs some of
the high frequency mechanical vibrations. Therefore, such polymers
are not easy to transmit ultrasonic vibration energy to the
pressing surface, which requires a higher amplitude. High energy
(high heat of fusion) is required to break the semi-crystalline
structure and change the material from a crystalline state to a
viscous state, which also determines the apparent melting point of
such materials. Once the molten material leaves the heat source, A
decrease in temperature causes rapid solidification of the
material. Therefore, the particularity of such materials (eg high
amplitude, good design of joints, effective contact with ultrasonic
fixtures, and excellent working equipment) must be considered in
order to achieve the success of ultrasonic welding.
- Polymer: Thermoplastic and thermoset
The process of bonding monomers together is referred to as
"polymerization." Polymers can be broadly classified into two broad
categories: thermoplastic and thermoset. After the thermoplastic
material is thermoformed, it can be softened and molded again. The
base undergoes only a change in state - this property determines
the adaptability of the thermoplastic material to ultrasonic
compression. Thermosetting materials are produced by irreversible
chemical reactions. Reheating or pressurization does not soften the
formed thermosetting products. Therefore, thermosetting materials
have traditionally been considered to be unsuitable for ultrasonic
waves.
The higher the melting point of the polymer, the more ultrasonic
energy it needs to weld.
- Hardness (elastic coefficient)
The hardness of the material is very effective in its ability to
effectively transmit supersonic vibration. In general, the harder
the ultrasonic power source material, the stronger its
conductivity.
The welding head vibrating at the ultrasonic frequency rubs the
heat at a predetermined time and pressure to fuse the plastic
joints to each other, which is firm and convenient.
High Frequency 40Khz 500w Ultrasonic Welding Transducer with Steel
Booster
