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Ultrasonic Vibration Rings-Dental Cleaning Piezo Transducer

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Zibo Yuhai Electronic Ceramic Co., Ltd.
Address :  No.57 Chuangye Road, Development Area Boshan, Zibo City, Shandong Prov. P.R. of China 
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+86-0533-4230012
Fax : +86-0533-4231700
Email : ceo@zbyuhai.com

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Ultrasonic Vibration Rings-Dental Cleaning Piezo Transducer

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Product Description
Parameters

Piezoelectric ceramic ring

Low aging, Low dielectric loss

Application: high power ultrasonic transducer, dental cleaning machine

Piezoelectric Ceramic Material: PZT-82(equal to PZT-8)

Piezoelectric elements technical data:

Dimensions: out diameter 10mm, inner diamter 5mm, height 2 mm

Radial Frequency Fr: 149KHz ± 3K

Mechanical Coupling coefficient K31 >0.325

Dielectric Loss tg δ: ≤ 0.3%

Static capacitance Cs: 270pF±12.5%

Test Condition: 25±3 °C 40~70% R.H.

fr, Zm, Kr => Radial mode vibration

Cs tanδ => LCR meter at 1KHz 1Vrms

High-frequency oscillation signal is generated by high-frequency oscillation circuit and used in ultrasonic transducer. The inverse piezoelectric effect (or magnetostrictive effect) is used to generate ultrasonic vibration. The working tip is stimulated to produce resonance. The plaque, calculus or bacteria on the periodontal surface are removed by various effects of ultrasound.

PZT-8 series

This material range is used in high power applications, even though its piezoelectric activity level is slightly lower than PZT-4 series types. With an extremely high mechanical quality factor and extremely low loss factor, PZT-8 series materials have the ultimate power handling capability.

High Power “Hard” Piezoelectric Materials are ceramics able to withstand high levels of electrical and mechanical stress and are particularly suited to high voltage and power applications.

Typical value of piezoelectric ceramic materials performance

Typical value of piezoelectric ceramic materials performance      
"Hard" PZT materials                
Properties     PZT-41 PZT-42 PZT-43 PZT-82 PCrN-4 PBaS-4
Dielectric Constant ɛTr3   1050 1250 1420 1100 1600 1900
                 
Coupling factor  KP   0.58 0.58 0.58 0.52 0.6 0.59
  K31   0.32 0.33 0.34 0.3 0.35 0.34
  K33   0.66 0.67 0.68 0.57 0.68 0.68
  Kt   0.48 0.48 0.48 0.4 0.45 0.49
Piezoelectric coefficient d31 10-12m/v -106 -124 -138 -100 -156 -160
  d33 10-12m/v 260 280 300 240 350 380
  g31 10-3vm/n -11.4 -11.2 -11 -10.3 -11 -9.5
  g33 10-3vm/n 28 25.3 24 25 24.7 22.6
Frequency coefficients Np   2280 2200 2160 2280 2100 2200
  N1   1671 1613 1583 1671 1539 1613
  N3   1950 1900 1875 1950 1850 1850
  Nt   2250 2200 2200 2300 2200 2200
Elastic compliance coefficient Se11 10-12m2/n 11.8 12.7 13.2 11.6 14 13.2
Machanical quality factor Qm   1000 800 600 1200 400 2200
                 
Dielectric loss factor Tg δ % 0.3 0.4 0.5 0.3 0.6 0.5
Density ρ g/cm3 7.5 7.5 7.5 7.6 7.5 7.5
Curie Temperature Tc °C 320 320 320 310 310 310
Young's modulus YE11 <109N/m3 85 79 76 86 71 76
Poison Ratio     0.3 0.3 0.3 0.3 0.3 0.33

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ADDRESS: No. 57, Chuangye Road, Development Zone, Zibo, Shandong, China

EMAILS: ceo@zbyuhai.com

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