Frequently Asked Questions

An ultrasonic welding machine joins plastic or metal parts using high-frequency mechanical vibration (ultrasound), with no glue, screws, or external heat required.

It works like this: a generator converts electrical energy into a high-frequency signal, a transducer turns it into mechanical vibration, and a horn delivers that vibration to the contact surfaces of the parts. Friction generates heat instantly at the joint, completing a weld in seconds — strong, clean, and fast.

Browse our full product range or call +86 15618952290 for help choosing a model.

There is no fixed price for ultrasonic welding machines — it mainly depends on power output, machine type (pneumatic or servo-driven), whether a custom horn is needed, the level of automation, and your output requirements.

As a rule of thumb, high-power servo models, custom tooling, and automated lines cost more than standard pneumatic machines. The real saving comes from correct sizing: too small and it won't weld your parts, too large and you overpay.

Send us your drawings or samples for a free evaluation and quotation — call +86 15618952290 to discuss.

The key difference is the pressing drive: servo models use a servo motor, while standard models use an air cylinder. With a servo drive, welding pressure, speed, and position can be precisely set, digitally stored, and repeated.

Servo ultrasonic welders deliver better weld consistency, traceable parameters, and gentler handling of precision and cosmetic parts — ideal for automotive, medical, and electronics applications. Pneumatic models are simpler and more cost-effective for high-volume production of standard plastic parts.

We manufacture both types — see our plastic welding equipment range.

The three most common defects are weak welds, flash (excess material squeeze-out), and surface marking. Most are caused by welding parameters, horn condition, or part and joint design — not necessarily by the machine itself.

How to fix them: for weak welds, check that energy and pressure are sufficient and that the horn fits the part well; flash usually means too much energy or a poor joint design — reduce amplitude and improve the energy director; surface marks can be reduced with lower pressure, cushioning, or re-machining the horn face.

We offer free sample welding and process support — call +86 15618952290 and let us solve it for you.

Ultrasonic plastic welders work best with rigid amorphous plastics such as ABS, PS, PC, PMMA (acrylic), and SAN — weld strength can approach that of the base material.

Semi-crystalline plastics like PP, PE, nylon (PA), and POM can also be welded, but they need higher energy and specially designed joint geometry, and the resulting strength is relatively lower. Halogen-containing plastics (such as PVC) are generally not recommended for ultrasonic welding.

Unsure about your material? Send us samples for a free weld test — see our contact page.

An ultrasonic metal welding machine creates solid-state bonds between metals through high-frequency frictional vibration — no filler material, no high temperatures — making it ideal for conductive materials like copper and aluminum.

Typical applications include automotive wire harness terminal welding (copper wire to terminals), battery tab welding, motor lead welding, and multi-layer copper/aluminum foil stacking, all with excellent conductivity and low contact resistance.

See our metal welding equipment range for related models.

Because ultrasonic metal welding is a low-temperature, solid-state process — it won't burn tab coatings or separators, and it produces no spatter that could contaminate cells. That is the key reason laser and resistance welding can't fully replace it.

It also handles multi-layer stacking of copper and aluminum foils, producing welds with low internal resistance and excellent conductivity for high-current battery applications, with short cycle times suited to cell production lines.

We supply dedicated ultrasonic metal welders for the battery industry, with free sample testing available.

The rule of thumb is simple: if ultrasonic welding can do the job, choose it first — it's fast, clean, and economical. Turn to hot-melt or hot plate processes only when ultrasonic can't handle the part.

In practice: ultrasonic suits small-to-medium, regularly shaped plastic parts; servo hot-melt (heat staking) machines suit parts with metal inserts or rivet-forming needs; hot plate welders suit large, irregular, or large-area joints beyond ultrasonic energy limits, such as bumpers and fuel tanks.

Send us your parts for a free process evaluation — call +86 15618952290.

Hot riveting machines are used to stake plastic-to-plastic or plastic-to-metal assemblies. Typical products include automotive interior parts (door panels, dashboards), lamps, motor brush holders, and PCB mounting posts.

The process heats a plastic stud and forms it into a rivet head — strong and neat. Our servo heat staking machines precisely control temperature, pressure, and displacement for consistent results on every stake point.

See the heat staking models in our plastic welding equipment range.

Ultrasonic food cutters slice with high-frequency vibration, producing smooth cuts with no sticking and no crumbs — easily handling cakes, cheese, chocolate, and frozen foods that challenge conventional blades.

Benefits include clean, attractive cut surfaces, less product waste, no frequent blade-cleaning stops, and stable continuous operation — ideal for food factories and central kitchens doing high-volume portioning.

Call +86 15618952290 for model advice, or browse our product center.

Yes. Send your part samples to our factory in Jiading, Shanghai, and we will weld them on suitable machines and return the welded samples for your evaluation — free of charge.

The test doubles as process validation: we record the working parameters for your future mass production. If your parts genuinely don't suit the process, we'll tell you honestly rather than push a sale.

Call +86 15618952290 before shipping, or find our address on the contact page.

Yes. As a machine manufacturer, we build custom equipment to your parts and output requirements — including multi-station rotary machines, auto loading/unloading, in-line inspection, and robot integration.

From standalone machines to semi- and fully automatic lines, we provide one-stop service covering design, manufacturing, installation, and commissioning. We always verify the process with sample tests before building, so the equipment works from day one.

Bring your parts for a factory visit, or call +86 15618952290 to discuss your needs.

Our machines come with a full-machine warranty — free repairs for non-artificial failures during the warranty period. Core components such as generators and transducers are covered too, with the exact warranty term stated in the contract.

After-sales support includes installation, commissioning, and operator training on delivery; remote guidance by phone or video for process or fault issues; on-site engineer visits when needed; and stocked spare wear parts for prompt supply.

Reach our service team at +86 15618952290 — see about us for more.

Absolutely — you're most welcome. Our factory is in Jiading District, Shanghai, an easy day trip from anywhere in the Yangtze River Delta. Book by phone in advance and come see the machines running live.

Bring your own part samples to watch real welds and discuss process and model selection face to face. For customers farther away, we also offer video factory tours and online demos.

Book at +86 15618952290 — full address on our contact page.

Buying from abroad is straightforward: we communicate in English and assist through every step — quotation, specification confirmation, manufacturing, testing, packing, and shipping arrangements.

Machines can be built to your local voltage and plug standards, with English operating interfaces and manuals. Before ordering, we can run free sample welds with your parts and share videos of the results for your approval.

Leave a message on our contact page or call +86 15618952290 (English supported) to start.

Objectively, Japanese brands (such as Seidensha) entered the ultrasonic field early and are known for stability and consistency — but they cost more, take longer to deliver, and after-sales response is relatively slower. Chinese manufacturers have caught up over the years and now deliver comparable weld quality in mainstream applications, with better value, shorter lead times, and faster service.

Our advice: if budget allows and you want maximum proven stability without time pressure, Japanese machines are a safe choice; if you value cost-effectiveness, customization, or quick support, domestic machines are often the more practical option. We maintain technical cooperation with Japan's Seidensha and Taiwan's Minghe Ultrasonics, so our process expertise is well grounded.

The best approach is a side-by-side sample test with your own parts — let the welds speak. Call +86 15618952290 to arrange one.