Ultrasonic Welding Horns (Sonotrodes)

Precision-machined ultrasonic horns in titanium, Steel, or aluminum for optimal energy transmission. Custom designs for complex geometries (e.g., multi-point welding) with ±0.01mm tolerance. Features include:

✔ Hardened tips for glass-filled materials

✔ FDA-compliant finishes for medical applications

✔ 3D simulation-optimized resonance profiles

An ultrasonic welding horn(also called ultrasonic sonotrode) is a component that connects the ultrasonic transducer and the welding object. Ultrasonic horns are typically made of materials such as aluminum, titanium, and steel, and their role is to transmit ultrasonic waves to the welding object and apply pressure. The ultrasonic horn’s design directly impacts the welding effect, making it one of the indispensable components in ultrasonic welding machines.     

Hyusonic ultrasonic sonotrodes are custom-engineered with CAD designs to create optimal structures for diverse welding applications. Prior to manufacturing, each sonotrode undergoes rigorous stress analysis to ensure peak welding performance. We achieve accuracy in horn production using precision CNC machining and laser measurement technology. Our ultrasonic sonotrodes are versatile tools suitable for a wide range of ultrasonic processes, including ultrasonic plastic welding, ultrasonic metal welding, and ultrasonic cutting.

ultrasonic metal welding horn image
Horn of Different Designs

Industry-Proven Designs

  • Textile/fiber welding horns with serrated tips

  • Multi-point contact horns for automotive parts

  • Micro-welding tips for electronic components

Precision Engineering

  • CNC-machined to ±0.01mm tolerance

  • Resonant frequency matched to your transducer (15kHz/20kHz/28kHz/30kHz/35kHz/40kHz)

  • Professional Stress Analysis of Welding Horns for Uniform Amplitude Distribution

Stepped Horn
hyusonic ultrasonic horn
Aluminum and Titanium Horns

Material Science Expertise

  • Aircraft-grade titanium (Ti-6Al-4V) for high-amplitude applications

  • Hardened aluminum alloys for cost-sensitive projects

  • Custom steel alloys for specialized metal welding

ultrasonic horn design guidelines

Our ultrasonic welding horns require personalized welding solutions to be evaluated based on specific product characteristics, followed by customized processing through mold opening. Only by designing the most suitable welding horns can the optimal welding effect be achieved.

ultrasonic horn design

Ultrasonic welding head stress analysis diagram1
Stress Analysis Before Modification
Ultrasonic welding head stress analysis diagram2
Stress Analysis After Modification

Customer FAQs

What is an ultrasonic welding horn used for?

An ultrasonic welding horn (sonotrode) is a critical component in ultrasonic welding systems that transfers high-frequency vibrations to the workpiece, enabling precise bonding of plastics, metals, or textiles.

Select based on:
✔ Frequency (15kHz, 20kHz, 28kHz, 30kHz, 35kHz or 40kHz)
✔ Material (titanium for durability, aluminum for cost-efficiency)
✔ Amplitude requirements (25μm–150μm)
✔ Part geometry (flat, knurled, or contoured tips)

Common materials:

  • Titanium (Ti-6Al-4V) – High strength, long lifespan

  • Aluminum 7075 – Lightweight, economical

  • Tool steel – For specialized metal welding

Causes include:
✖ Resonance mismatch (incorrect frequency tuning)
✖ Overheating (poor cooling or excessive amplitude)
✖ Material fatigue (low-grade titanium or aluminum)

Yes! Custom horns are CNC-machined to match:

  • Unique part shapes (e.g., medical device components)

  • Specific amplitude requirements

  • Machine compatibility (Branson, Herrmann, etc.)

Look for manufacturers offering:
✅ ISO 9001 certification
✅ Free CAD design support
✅ Frequency testing reports

Send your inquire now

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