{"id":7372,"date":"2018-08-06T09:21:54","date_gmt":"2018-08-06T09:21:54","guid":{"rendered":"http:\/\/www.westermans.com\/blog\/?p=7372"},"modified":"2026-01-09T15:14:13","modified_gmt":"2026-01-09T15:14:13","slug":"what-is-seam-welding","status":"publish","type":"post","link":"https:\/\/www.westermans.com\/blog\/what-is-seam-welding\/","title":{"rendered":"How To Decide On The Right Seam Welder For You"},"content":{"rendered":"

Updated January 2025<\/p>\n

There are two main types of seam welding machine, which is best for you?<\/h2>\n

This is difficult to answer unless we know what is being manufactured.
\nWe start by asking:<\/p>\n

    \n
  1. Is it a similar material to be joined?<\/li>\n
  2. Can it be overlapped?<\/li>\n
  3. Dimensions of the material to be seam welded?<\/li>\n<\/ol>\n

    A. Resistance Seam welders.<\/h3>\n

    The resistance seam welding process produces a weld at the faying surfaces of two similar metals. The seam may be a butt joint<\/a> or an overlap joint<\/a> and is usually an automated process and forms the weld progressively, starting at one end.<\/p>\n

    \"3d<\/p>\n

    Resistance seam welding relies on two electrodes, usually made from copper, to apply pressure and current. The electrodes are often disc-shaped and rotate as the material passes between them.<\/p>\n

    Resistance seam welders produce an extremely durable weld because the joint is forged due to the heat and pressure applied. A properly welded joint formed by resistance welding can easily be stronger than the material from which it is formed.<\/p>\n

    A common use of a resistance\u00a0seam welder is during the manufacture of round or rectangular steel tubing like an exhaust or fire extinguisher.<\/p>\n