After-sales repair service for ultrasonic metal welding machines. Original factory technical team responds within 48 hours, professional testing and spare parts
Ultrasonic metal welding machine after-sales repair service is a critical component in ensuring the long-term stable operation of new energy wire harness and energy storage copper/aluminum busbar welding production lines. Covering a complete equipment matrix from 3000W precision welding to 12000W ultra-high-power energy storage welding, we provide full-lifecycle technical support encompassing fault diagnosis, core component replacement, preventive maintenance, and emergency response, designed to minimize the impact of equipment downtime on production capacity and ensure welding consistency and process reliability.
In the large-scale production of new energy power batteries, energy storage systems, and high-voltage wire harnesses, any unplanned downtime of ultrasonic metal welding machines directly results in production line capacity loss. Large equipment represented by the YN-D2012-G (12000W, weight 988KG, welding area 35-120mm²)[（Fact 1）] and YN-D208-G (8000W, weight 957KG, welding area 20-70mm²)[（Fact 2）] has repair complexity and professional service requirements far exceeding those of conventional equipment. Professional after-sales repair services not only include rapid post-fault restoration but also emphasize combining preventive maintenance with fault repair to ensure welding area stability and welding strength consistency, thereby reducing customers' total operating costs. We understand that every downtime event means delivery delays and quality risks, which is why we have established a rapid response mechanism from remote diagnosis to on-site resolution to safeguard your production continuity.
Our after-sales repair service capability covers the full range of ultrasonic metal welding machines, with differentiated repair processes and spare parts strategies developed for different power levels and structural characteristics. The specific repair capability matrix is as follows:
How do I choose the right ultrasonic metal welding machine model based on material thickness?
Please provide the material type (copper, aluminum, nickel, etc.), single-layer thickness, and total stack thickness. We recommend a model based on amplitude, frequency, and power matching principles to ensure weld strength and efficiency. For standard copper/aluminum foil thicknesses of 0.1-3mm, our standard series is suitable; extra-thick or dissimilar materials require a customized solution.
What welding configurations does the ultrasonic metal welder support (e.g., wire harnesses, terminals, tabs)?
We support wire-to-wire, terminal-to-wire, tab-to-tab, and multi-strand stranded wire welding. Configurations include transducers, sonotrodes (horns), anvils, and fixtures, which can be customized to workpiece shapes. We recommend providing samples or drawings, and we will issue a free welding feasibility report.
How is installation and commissioning completed after the equipment arrives?
We provide remote video guidance and on-site installation services. Installation requires a level, stable surface and reliable grounding. Commissioning includes automatic frequency tracking, amplitude calibration, and sonotrode alignment, taking approximately 2 hours in total. Initial commissioning is performed by an engineer, who also trains operators on basic parameter settings.
Do I need to prepare any auxiliary equipment for installation and commissioning?
You will need a 380V/50Hz three-phase power supply (or per model specifications), a 0.4-0.6MPa compressed air source (for pneumatic models), cooling water (for water-cooled models), and a sturdy workbench. We include a detailed installation checklist and send a site preparation guide in advance to ensure plug-and-install upon arrival.
How do I maintain the sonotrode and anvil in daily use to extend their lifespan?
Clean oxide from the sonotrode surface each shift using an alcohol wipe; inspect the anvil for wear and measure key dimensions monthly with a micrometer. Avoid no-load welding and regularly tighten screws. We provide a maintenance kit (including spare O-rings and cleaning brushes) and recommend replacing the sonotrode every 5 million cycles.
How do I optimize welding parameters (such as amplitude, pressure, and time)?
Based on material hardness and thickness, initial recommendations are amplitude 20-30μm, pressure 0.2-0.4MPa, and time 0.1-0.5 seconds. Fine-tune via tensile testing to ensure peel strength meets requirements. We provide a parameter database and support remote parameter adjustment guidance to reduce trial-and-error costs.
What should I check if I encounter weak or defective welds?
First, check whether the sonotrode is worn or misaligned; next, verify anvil cleanliness and pressure stability. If the issue persists, check for frequency drift (normally within ±50Hz) and recalibrate the amplitude. We provide a fault code table, allowing common issues to be diagnosed within 5 minutes.
How do I handle overload or frequency lock-loss alarms on the equipment?
Overload is often caused by hard contact between the sonotrode and workpiece or overly hard materials—reduce pressure or check sonotrode tightness. Frequency lock-loss requires re-running automatic frequency search and checking the transducer connection cable. If alarms persist, contact after-sales support; we offer rapid spare transducer replacement with downtime not exceeding 4 hours.
What are the maximum welding power and frequency range of the ultrasonic metal welder?
Standard models cover power from 800W to 4000W, with frequency options of 20kHz, 30kHz, and 40kHz. 20kHz suits thick copper/aluminum, while 40kHz suits thin foils. Maximum weldable area reaches 100mm² (copper). Specific parameters are per the model specification sheet; higher power customization is supported.
How is weld strength quantitatively tested, and does it meet industry standards?
We comply with IPC/WHMA-A-620 and GB/T 30512 standards, providing tensile, peel, and metallographic test reports. Each machine ships with weld sample test data, ensuring weld tensile strength is no less than 80% of the base material. We can also coordinate third-party testing at your request.
Is the equipment CE, UL, or RoHS certified?
The full series is CE certified (LVD + EMC), key electrical components meet UL standards, and the entire machine complies with RoHS 2.0. We provide certificate copies and support customer factory audits. There are no compliance barriers for export to the EU or North American markets.
Can you customize non-standard sonotrode shapes or special welding tooling?
Yes. We design sonotrodes (e.g., stepped, radiused) and anvils based on your workpiece 3D drawings, using imported alloy steel with hardness above HRC55. Customization lead time is approximately 7-15 days, with free design review to ensure welding consistency.
What is the delivery lead time and minimum order quantity for bulk purchases?
Standard models are in stock and ship within 3 days for single units; custom models have a minimum order quantity of 1 unit with a 15-20 day lead time. For bulk orders (≥10 units), priority scheduling reduces lead time to 10 days. We provide production schedules and support phased delivery to match your production line pace.
Are there tiered pricing or long-term cooperation agreements for bulk purchases?
We offer tiered discounts based on order volume: 3% off for 5+ units, 5% off for 10+ units, and annual framework agreements for 20+ units that include extended free warranty and priority technical support. Contact sales for a detailed quotation, available tax-inclusive with freight.
What are the typical application scenarios for ultrasonic metal welding machines?
Widely used in new energy vehicle battery tab welding, wire harness terminal crimping, relay contacts, photovoltaic busbars, and capacitor lead wires. Particularly suited for dissimilar metal welding (copper-aluminum) without flux, offering excellent conductivity. We have served 500+ manufacturing enterprises.
What is the after-sales service response time and warranty policy?
The full machine carries a 2-year warranty, and the transducer has a 3-year warranty. Our after-sales hotline responds 7×24 hours, with remote diagnosis within 2 hours and on-site service within 48 hours (covering major industrial cities). Free loaner equipment is available so production is not interrupted during repairs. After the warranty period, lifetime paid maintenance is available with transparent pricing.
Do you provide operator training and ongoing technical support?
Each machine includes 2 days of on-site training (theory + hands-on), covering parameter setup, daily maintenance, and troubleshooting. Ongoing lifetime free remote technical support is provided, along with quarterly optimization guides and annual invitations to our offline technical exchange sessions.
Winna Technology specializes in power adapters, AC/DC cable harness customization, and ultrasonic metal welding equipment R&D and manufacturing, providing one-stop OEM/ODM services.
Our products are CE/UL/FCC/CCC/RoHS certified, with an annual return rate below 0.02%, serving customers in 50+ countries and regions worldwide.
Winna Technology builds ultrasonic metal welding machines for aluminum, copper, busbars and foils. Standard machines and custom systems include generator, converter, sonotrode, anvil and control, optionally integrated into automated production lines.
| Frequency | 20 to 40 kHz, depending on part and application |
| Materials | Aluminum, copper, busbar, foil |
| Control | Standalone or PLC and robot interface |
Do you build custom systems?
Yes. Tooling and parameters are designed around your part.
Which materials can be welded?
Typically aluminum, copper, busbars and foils. Suitability is confirmed by a welding test.
Can the machine be automated?
Yes, with PLC, rotary indexing or robot integration.
Contact: sale@winna-group.com or WhatsApp +86 134 1065 0093.
Products meet international safety and EMC standards
