Stainless Steel Flange Longitudinal Seam Welding Machine Automatic Hwashi

Employing roller electrodes in place of cylindrical ones for spot welding, this method allows the welding workpiece to move between rolling plates. The rolling action produces overlapping weld nuggets, ensuring a sealed weld that effectively joins the workpieces together

Typically utilizing AC pulse or amplitude modulation current, this method offers flexibility, including options for three (single)-phase rectification, medium frequency, and high-frequency DC. It is suitable for welding single plates with a thickness of up to 3mm.

The seam welding machine employs a pair of roller electrodes, replacing traditional cylindrical electrodes in spot welding. Workpieces move between these rollers, creating a sealed weld with overlapping molten cores that fuse the pieces together. This technique results in a single, unified weld joint and can be categorized as roll spot welding or gas-tight seam welding, depending on the specific core fusion overlap.

1. seam welding machine use the roller electrode to replace the cylindrical electrode of spot welding.

2. It will generate weld nuggets which will overlap with each other so as to achieve welding effect.

3. AC pulse current or amplitude modulation current will be adopted, but three (single)-phase rectification, medium frequency and high frequency      DC are also available.

4. According to different overlap of the melting cores, it could be divided into roll spot welding and air-tight seam welding.

5. There exist three stages in the forming process of welding spots: pressurization, heating fusing and cooling crystallization like spot welding.