ultrasonic wire welder ST series​

Ultrasonic Wire Welder ST series

description

The ST Series ultrasonic wire welder is engineered for high-performance metal wire welding, featuring a digital ultrasonic system for fast, precise, and stable welding. With ultra-low post-weld resistance and unmatched efficiency, it excels in automotive and battery wire harness applications. Optimized for copper and aluminum harnesses, it ensures reliable, industry-grade connections.

This ultrasonic wire welder can complete welding in about 1 second, commonly used for welding copper to copper, copper to aluminum, and aluminum to aluminum wires. It allows customization of the welding head size, peak output power, and output pressure according to the wire harness diameter. The modular design also enables quick replacement of the welding head, enhancing efficiency.

Why choose ultrasonic wire harness welding machine ST series​

Intelligent Monitoring System

Equipped with professionally designed automatic welding monitoring, defective product detection, multiple welding modes, it meets the requirements of most welding scenarios.

Stable Ultrasonic System

The ST series ultrasonic wire harness welding machine adopts a well-designed structure and a stable ultrasonic system, which is specially used for metal wire harness welding, and the welding is fast, clean and stable.

Price & Service

HYUSONIC, a Chinese ultrasonic welding machine manufacturer, ensures first-tier quality via excellent supply chains at favorable prices, offering comprehensive trial welding, training, warranty and after-sales support.

Customized Welding Solutions

This ultrasonic wire welder comes with modular ultrasonic horns and fixtures, enabling customized designs tailored to unique wire structures, harness specifications, and welding angles. Professional technical support ensures seamless integration with specific product requirements. It supports precise welding for fine wires up to medium-gauge cables, compatible with multiple materials such as copper, aluminum, and tinned copper, ensuring consistent welding quality across diverse wire types.
ultrasonic wire welder sample

Minimal Thermal Impact & Clean Welding

Ultrasonic wire welder generates minimal heat, preserving the insulation integrity of wires and preventing thermal damage to sensitive components. The process is flux-free and residue-free, meeting strict cleanliness standards for medical, automotive, and aerospace industries.

Technical data

 ParameterSpecifications/Range
Technical DataMachine Power800W / 1200W / 2500W / 3000W / 4000W / 5000W / 6000W / 10000W
 System Frequency20kHz
 Power Input① AC220V ±10%, 50Hz/60Hz
② AC380V ±10%
 Weight55KG / 160KG
Welding (Range/Precision)Energy Range1ws – 9999ws
 Welding TimeRange: 0.01s – 10s
DimensionsFrame (L×W×H)400mm × 680mm × 1280mm
 Generator (W×D×H)265mm × 580mm × 255mm

welding cases

Ultrasonic wire splicing sample
wire splice image 2

Customer FAQs

Why choose ultrasonic welding over resistance welding for copper harnesses?

Ultrasonic avoids heat-affected zones (HAZ), reduces energy use by 40%, and works with AC220V input (vs heavy 3-phase for resistance).

Ultrasonic welding has lower resistance, and most industries use copper wire to distribute electricity, which requires conductive properties.

Use serrated anvils, apply 2000N–4000N clamping force, and set short weld times (0.1s–0.3s) to fuse strands uniformly.

  • Perform pull tests (≥80% base material strength), microsection analysis, and comply with ISO 13485 for hermetic seals.

Ultrasonic welding creates molecular bonds without oxidation, ensuring 99%+ conductivity. Crimping risks micro-gaps, leading to resistance buildup over time.

High-power machines (e.g., 4000W–6000W) reliably splice wires up to 10 AWG. For precision work (e.g., 24 AWG), use systems with 20kHz–40kHz frequency and 0.01mm displacement control.

Yes! Use 30kHz–35kHz frequency and pressure settings (e.g., 3000N) to fuse dissimilar metals without flux or solder.

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