Wire Tinning, Soldering & Welding Machines

Choose against the joint specification and conductor materials. Ultrasonic welding joins conductor bundles without adding solder or flux. Soldering remains appropriate where the specification calls for a soldered joint, including suitable connectors and flat cable. We confirm the method, tooling and acceptance results on your actual parts; material combination and joint geometry determine suitability.

By the total gathered cross-section of the splice, not the largest single wire — three 2.5 mm² wires present 7.5 mm² to the horn. Published ranges: 0.75–20 mm² (WM-711), 0.7–30 mm² (WM-717S), up to 50 mm² (WM-718). Send your actual bundle and we weld it before you order.

A thin copper band is fed from a reel, wrapped around the gathered strands and crimped at 3–4 tons, mechanically locking the splice. It is used where ultrasonic is not available or not accepted, and where the joint will be insulated afterwards. The WM-716 crimps at 4 tons with 1–10 mm band; the WM-715 is a compact 3-ton benchtop unit. The dedicated presses are in Crimping & Connector Assembly.

The WM-721 presses a heated bar across the joint and pulse-heats it to a programmed profile — 50 to 600 °C in up to 4 stages. It applies a controlled heat-and-pressure cycle across the contacts of an FFC, FPC or fine-pitch connector, rather than working contact by contact with an iron. We verify the finished joints on your parts; a programmed cycle alone does not guarantee identical results at every contact.

Stripped strands flare. Flared strands cause stray-strand shorts at solder joints and misfeeds in crimp applicators, and hand-twisting cannot hold consistency over thousands of pieces. A machine twist gives every end the same lay — and on the tinning models the twisted end goes straight into the solder pot before it can relax.

Do not assume that pre-tinning is required or acceptable before crimping. Solder-coated strands can deform under sustained clamping pressure and affect connection stability. Follow the terminal application specification for conductor preparation, including whether twisting is allowed. Tinning is used for specified soldered connections; screw-terminal use also depends on the terminal specification. If your process calls for end twisting without tinning, compare the WM-4720.

Strand twisting tightens the loose strands of one stripped conductor end — a few millimetres of work at the wire tip. Twisted-pair stranding twists two or more separate insulated wires around each other along their whole length, for noise rejection. Different machines: the WM-4720 for the first, the WM-4717 and six-axis WM-4716 for the second. See our twisting, untwisting and straightening machines for dedicated stations.

Yes. The WM-4715 cuts, strips both ends and tins them on sheathed cable Ø3.0–8.0 mm at 2,000–5,000 pcs/h. The WM-4710T does it for 3-core round and flat cable with up to 50 mm of core splitting. The WM-4718 is the semi-automatic version when volumes do not justify a full line.

For splices: the wires being joined (count and mm² each), so we can total the gathered section, plus target cycles per hour. For soldering: the connector or assembly, solder specification and joint count per piece. Then courier samples — we weld or solder your own parts on the machine, on camera.