PNEUMATIC SPOT WELDING MACHINE SKXD-50

SunkaLead SKXD-50 Transistor Pneumatic Battery Spot Welder

The SunkaLead SKXD-50 is a transistor-controlled pneumatic spot welding machine for qualified battery tab and nickel-strip connections. A pneumatic welding head provides controlled electrode contact while the power supply delivers the short electrical pulse used to form the resistance weld.

This type of station suits battery assembly work where repeatable setup and operator handling are important. The welding result depends on the complete joint: cell terminal, strip material, surface condition, electrode shape, contact force and pulse settings. A high current rating alone does not establish that a particular material combination can be welded successfully.

The documented system offers constant-current, constant-voltage and combined control modes. Its LCD presents process information including welding current, power and electrode voltage. A detection function checks the presence or condition of the workpiece before the main weld, supporting a controlled welding sequence.

The equipment is specified in an 8000A welding-current class, which should not be interpreted as continuous output. For battery nickel work, the document discusses direct welding of 0.08-0.2mm pure nickel-200, with different requirements for thicker or composite connections. Qualify the actual joint rather than extending a thickness figure to every material.

Use sample welds and an approved inspection method to establish the process window. A visually neat mark is not, by itself, evidence of sufficient mechanical strength or electrical performance.

Provide the cell terminal drawing, strip grade, thickness, coating and proposed weld pattern when selecting this machine. Pure nickel, nickel-plated steel and copper-nickel composites are different welding applications; their thicknesses should not be treated as interchangeable.

Check that the fixture presents the workpiece squarely and allows the electrodes to reach each intended location without touching adjacent live metal. Define the required operator access, production sequence and inspection interval. For a new pack design, evaluate representative samples before production and preserve the approved electrode geometry and machine settings as part of the controlled process.

Applications

• Qualified nickel-strip welding in battery pack assembly.

• Battery tab and connection-sheet development trials.

• Controlled small-batch production welding stations.

• Process evaluation for approved cylindrical-cell joints.

• Maintaining repeatable welding conditions across assembly batches.

Installation Guide

Have trained personnel install the welder with the specified electrical and pneumatic services, protective earth and appropriate machine guarding. Set up the fixture so that cell terminals and loose conductors cannot create unintended contact paths. Confirm the electrode alignment and approved operating conditions before applying welding energy.

Use engineering-approved samples to establish the weld settings, then inspect joints using the required acceptance method. Maintain electrode tips and contact surfaces, and record changes to pressure, timing or material. Isolate electrical and compressed-air energy before servicing the head. Stop production when weld consistency changes and investigate the cause rather than simply increasing the current.

Why Choose ARB Accessories?

ARB Accessories offers welding equipment alongside battery cells, nickel strips, insulation materials and pack-assembly accessories. Share the cell terminal, strip material, thickness and pack drawing when discussing this machine. Matching the equipment and consumables as one welding application helps procurement and production teams define a meaningful sample trial before placing an order.