What materials can be welded with ultrasonic transducers?

Ultrasonic welding works best with thermoplastics, non-ferrous metals, and some composite materials. Common applications include plastic parts, thin metal sheets, and wire splicing. Material compatibility depends on acoustic properties and melting characteristics.

How do I choose the right frequency for welding applications?

Lower frequencies (15-20 kHz) are ideal for larger parts and thicker materials, while higher frequencies (40-70 kHz) work better for small, precision parts. The choice depends on part size, material thickness, and required weld strength.

What factors affect ultrasonic welding quality?

Key factors include frequency selection, amplitude control, welding time, applied pressure, part design, and material properties. Our transducers provide precise control over these parameters for consistent weld quality.

Do you provide technical support for welding applications?

Yes, we offer comprehensive technical support including application analysis, parameter optimization, troubleshooting, and training. Our engineers can help optimize your welding process for best results.

What safety considerations are important for ultrasonic welding?

Safety measures include proper operator training, hearing protection, equipment grounding, regular maintenance, and following safety protocols. Our transducers include safety features and we provide detailed safety guidelines.

Ultrasonic Welding Transducer 20 kHz 1250W Power | HJ-5020B

The Yujie HJ-5020B is a high-performance ultrasonic welding transducer operating at 20.15-20.20 kHz, engineered for demanding industrial welding applications. With 1250W power output and quad piezoelectric elements, it delivers exceptional energy transfer efficiency for consistent, high-quality welds. The low impedance design (≤10 Ω) ensures maximum power transmission to the workpiece, making it ideal for automotive, medical device, and consumer product manufacturing. Its compact 103mm height and M12×1.75 threaded interface provide easy integration with standard welding equipment.

Features & Applications

Technical Specifications

Each product is organized for procurement review: core performance, fit and mounting, operating limits, integration notes, and RFQ-ready supply terms.

Application Fit

•Plastic Part Welding: Automotive interior components, dashboard assemblies
•Electronic Device Assembly: Battery pack welding, sensor housings
•Medical Device Manufacturing: Sterile container sealing, disposable device assembly
•Consumer Products: Appliance components, packaging closures
•Textile & Nonwoven: Filter media, protective garment seams
•Automotive Industry: Bumper welding, light housings, fluid containers

Features

✔High Power Output (1250W) – Delivers strong ultrasonic energy for demanding welding applications
✔Precision Frequency Control – 20.15-20.20 kHz for consistent weld quality
✔Low Impedance Design – ≤10 Ω ensures efficient energy transfer
✔Industrial-Grade Construction – Built for continuous operation in manufacturing environments
✔Quad Piezoelectric Elements – 4 elements provide balanced power distribution
✔Compact Form Factor – 103mm height fits standard welding equipment

Applications

•Plastic Part Welding: Automotive interior components, dashboard assemblies
•Electronic Device Assembly: Battery pack welding, sensor housings
•Medical Device Manufacturing: Sterile container sealing, disposable device assembly
•Consumer Products: Appliance components, packaging closures
•Textile & Nonwoven: Filter media, protective garment seams
•Automotive Industry: Bumper welding, light housings, fluid containers

Need Engineering Support for HJ-5020B?

Share generator frequency, horn stack geometry, mounting thread, power target, and operating duty to receive an RFQ-ready recommendation.

Request Specifications & Pricing for HJ-5020B

Get detailed datasheets, OEM pricing, and lead time for the HJ-5020B. MOQ for welding transducer evaluation normally starts from 10 pcs for established designs. Available documentation commonly includes impedance / resonance test data, outgoing QC records, and batch consistency reporting.

The email opens pre-filled with a short spec checklist — partial details are fine. Typical reply within one business day.

Key Specifications

Performance

Model	HJ-5020B
Resonance Frequency	20.15 - 20.20 kHz
Bandwidth	2.70 - 0.50 kHz
Static Capacitance	9670 pF
Impedance (Ø50 mm)	≤ 10 Ω
Impedance (Ø64 × 232 mm)	≤ 20 Ω
Insulated Impedance	≥ 100 MΩ
Number of Piezoelectric Elements	4

Mechanical

Piezoelectric Element Size	Ø50 × Ø20 × 7 mm
Height	103 mm
Threaded Interface	M12 × 1.75

Operating Limits

Maximum Diameter	Ø50 mm

Integration

Power Output	1250 W

Procurement

MOQ / Sample Policy	MOQ for welding transducer evaluation normally starts from 10 pcs for established designs.
Sample Lead Time	Sample lead time is usually 7-12 working days after stack dimensions, horn interface, and generator fit are confirmed.
Production Lead Time	Typical production lead time runs 3-6 weeks depending on tooling, stack tuning, and quantity.
Customization Scope	OEM changes commonly include thread interface, stack height, piezo configuration, tuned frequency window, and cable or terminal style.
Available Documents & Reports	Available documentation commonly includes impedance / resonance test data, outgoing QC records, and batch consistency reporting.