35 Khz Ultrasonic Piezoelectric Transducer , Small Ultrasonic Welding Transducer

35KHZ 500w Ultrasonic Welding Transducer with One Connected Screw

Description:

ultrasonic transducer is an energy conversion device whose 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, directivity, transmission and reception sensitivity, and the like. Transducers for different applications have different performance parameters. For example, for an emissive transducer, the transducer is required to have a large output power and high energy conversion efficiency; and for a transducing transducer, a wide requirement is required. Frequency band and high sensitivity and resolution. Therefore, in the specific design process of the transducer, the relevant parameters of the transducer must be rationally designed according to the specific application.

Specifications:

Piezoelectric ceramic sheet production process:

The process of piezoelectric ceramic sheets is as follows: batching--mixing and grinding--pre-sintering--secondary grinding--granulation--forming--displacement--sintering into porcelain--shape processing--electrode- - High pressure polarization - aging test.

1.  the ingredients: pre-treatment, remove the impurities, and then weigh the various raw materials according to the proportion of the formula, pay attention to a small amount of additives should be placed in the middle of the bulk.
2. Mixing and grinding: The purpose is to mix and mix various raw materials and prepare conditions for complete solid phase reaction for pre-firing. Generally, dry grinding or wet grinding is adopted. Dry grinding can be carried out in small batches, and agitation ball milling or airflow pulverization can be adopted in large batches with high efficiency.
3. Pre-burning: The purpose is to conduct solid-phase reaction of various raw materials at high temperature to synthesize piezoelectric ceramics. This process is very important. Will directly affect the sintering conditions and the performance of the final product.
4. the second fine grinding: the purpose is to re-sinter the pre-fired piezoelectric ceramic powder and finely grind it to lay a good foundation for the uniform performance of the porcelain.
5. Granulation: The purpose is to form a high density of fluid particles with good density.
6. Molding: The purpose is to press the pelletized material into the desired preformed blank.
7. Distorting: The purpose is to remove the binder added during granulation from the blank.
8. Sintering into porcelain: The blank is sealed and sintered into porcelain at high temperature. This link is very important.
9. shape processing: grinding the finished product to the required finished product size.
10. Electrode: A conductive electrode is placed on the surface of the desired ceramic sheet. The general methods are silver layer infiltration, chemical deposition and vacuum coating.
11. High-voltage polarization: The ceramic internal domains are aligned, so that the ceramic has piezoelectric properties.
12. Aging test: After the ceramic performance is stable, the indicators are tested to see if the expected performance requirements are met.

35KHZ 500w Ultrasonic Welding Transducer with One Connected Screw