Principle of ultrasonic flaw detection reachs sensor test and design

  • Time:
  • Click:87
  • source:BACHTEL CNC Machining
Ultrasonic transducer, horn harmony is covered is the device that is electric energy changeover vibration. Want to understand operation principle, can solder in ultrasonic undertake comparative between machine and car. Sensor executive energy is changed (as electric machinery) , the scale between transformer adjustment force and speed (be like gear-box) , final ultrasonic / ultrasonic horn guides and bring to bear on the job that this energy will come to finish place to need (as the wheel) . In the car, all mechanical system parts must have been designed, harmonic, transmit efficiency with raising energy as far as possible. Ultrasonic system also is such, fall in this kind of circumstance however, the frequency that the crucial parameter of efficiency is the part that should approach as far as possible (for example 20 KHz +/- 50 Hz) . An acoustics ultrasonic solders the analogy between the mechanical system with the car. Operation sensor has two jobs frequency, can identify easily in curve of its report impedance. Impedance maximum is corresponding at antiresonance frequency (the oldest rate) . Ultrasonic solders the system works with antiresonance frequency. Impedance is the smallest the value is corresponding at resonance frequency (most energetically) . Ultrasonic cleans a system to work with resonance frequency. The impedance curve of sensor is right frequency. Increase ultrasonic / horn frequency: Reduce supersonic electrode / horn length in order to increase frequency. Ultrasonic solders machine / mould (factory) : Reduce ultrasonic / horn frequency: Reduce ultrasonic / the measure of horn frequency. Sensor test should work normally, the frequency of sensor and impedance must be inside tolerancepublic errand limits. For example, to soldering system, frequency should be taller than frequency of nominal and acoustics set 2.

5 ％ , tolerancepublic errand is + / - 0.

25 ％ . The critical factor of frequency and impedance is the dimension precision of the spare parts, applied tight ness rating, quality of pottery and porcelain and tuning (the circumstance that is similar to ultrasonic transmission) . Use TRZ analyzer decides the frequency of transducer and impedance. Acoustics test is acoustics the frequency of the group and impedance must be inside acceptable range. Soldering in the system, the public errand of frequency is ± 0.

25 ％ , for example 20khz ± 50Hz. Function depends on the consistency between frequency tuning and component. Assorted sensor and converter (a low frequency, another is high frequency) when, although the job leaves in correct frequency, produce this kind of situation possibly also. Through measuring impedance to detect this is planted the problem of the type. Ultrasonic solders acoustics and oscillatory amplitude. Pressing experiment of electric pottery and porcelain to press electric pottery and porcelain is sensor core and crucial element. To power source application, apply PZT-8 and PZT-4 normally model. Before be assembled afresh, must prove the micro-crack of pottery and porcelain. Use TRZ software, unusual peak value appears to detect easily to crackle in can fighting a curve through resistor. With TRZ software test the pottery and porcelain that suppress report is forecasted safeguard safeguard through forecasting a gender, can avoid the problem in ultrasonic system conveniently. Generally speaking, frequency deviation expresses to wear away, coupling issue shows in impedance. These problems are the use TRZ that undertakes through butt joint mouth solid and polish will solve be tighteninged afresh have cut and soldering system forecast a gender to safeguard CNC Milling CNC Machining