Resistance seam welding (RSEW) is similar to spot welding except that rotating wheel electrodes are used. The process is used when leak-tight welds or long strings of spot welds are required. Three forms of seam welding exist: standard seam, mash seam, and roll spot welding.

In standard seam welding, a series of overlapping weld nuggets are formed by rotating the wheel electrodes along the workpieces and firing a continuous series of current pulses. This action forms a continuous, leak-tight joint.

In mash seam welding (RSEW-MS), there is a small overlap of sheets, typically about one to two times the sheet thickness. Sheets are then mashed together while current applied, making a solid state joint. The resulting welded joint is generally 110-150% of the original sheet thickness. This final joint thickness can be reduced by post-weld planishing.

In roll spot welding, the current pulses as wheels traverse the workpieces to form a line of separate spot welds (not a leak-tight joint).

Share this:

Latest News

The Importance of Powder Characterization in Metal Additive Manufacturing
Metal additive manufacturing (AM) processes allow the creation of complex, cutting-edge, and never-before-seen designs using a wide range of alloys.Metal additive manufacturing (AM) processes allow the creation of complex,…
Read more...
Intertech Plastics is new EWI Member
EWI is pleased to welcome Intertech Plastics, Inc. to membership.…
Read more...
EWI SonicSeal™ Debuts at Pack Expo 2016
For the first time, EWI visited the international Pack Expo…
Read more...
EWI Colorado Hosts Facility Premiere; Opens Doors to Statewide Audience
On November 9, EWI celebrated the opening of its third…
Read more...
FuzeHub Interviews Buffalo Manufacturing Works President Michael Ulbrich
Michael Ulbrich, President of EWI's New York operations, discusses Buffalo Manufacturing Works and other EWI initiatives.Michael Ulbrich, President of EWI's New York operations, discusses Buffalo…
Read more...
EWI’s High Impact Capabilities for Defense Manufacturers
EWI’s array of technical capabilities and equipment combined with unparalleled…
Read more...
Deere & Company – New EWI Member
EWI is pleased to welcome Deere & Co. to membership. Founded in 1837, John Deere manufactures ... EWI is pleased to welcome Deere & Co. to membership.…
Read more...
Recently Published: Multiphysics Modeling of a Welded Furnace Roll for Improving Creep-Fatigue Life
Congratulations to EWI principal engineers Yu-Ping Yang and Bill Mohr for their published article in the November 2016 issue of Welding Journal, "Multiphysics Modeling of a Welded Furnace Roll for Improving Creep-Fatigue Life."Congratulations to EWI principal engineers Yu-Ping Yang and Bill Mohr…
Read more...