Seam welding


Seam welding

Resistance Seam Welding is a resistance welding process that produces a weld at the faying surfaces of overlapped parts along a length of a joint. The weld may be made by overlapping weld nuggets, a continuous weld nugget or by forging the joint as it is heated to the welding temperature by resistance to the flow of welding current. Instead of using two cylindrical electrodes as in case of spot welding, here two circular disks are used as electrodes. The workpiece is passed through the space between the two discs, and under pressure applied by the discs and current flowing through them, a continuous weld is formed.

With seam welding the material passes between two rotating wheels or welding rollers. The welding rollers perform three tasks:
*Weld current transmission
*Welding pressure
*Feed motion transmission

The high electrical A/C current (low voltage) is supplied from a transformer.

The overlap of the work piece with its comparatively high electrical resistance is intensely heated by the current. With each positive or negative current half-wave the parts are heated to a semi-molten condition, especially at the current peaks. The semi-molten overlap surfaces are pressed together by the welding pressure which causes them to bond together into a uniforming welded structure after cooling. Most seam welded technologies use water cooling through the weld roller assemblies due to the intense heat generated.


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Look at other dictionaries:

  • Seam welding — Seam welding. См. Сварка швом. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • seam welding — noun : resistance welding in which the weld is made linearly (as between two rollers, a roller and a bar) * * * seam welding noun 1. Resistance welding of overlapping sheets of metal using wheels or rollers as electrodes 2. Welding two pieces of… …   Useful english dictionary

  • seam welding — ritininis suvirinimas statusas T sritis radioelektronika atitikmenys: angl. seam welding vok. Rollennahtschweißen, n rus. роликовая сварка, f pranc. soudage aux galets, m …   Radioelektronikos terminų žodynas

  • seam welding — /sim ˈwɛldɪŋ/ (say seem welding) noun welding which runs continuously along a seam to connect two pieces of metal, either sheet or tubular. Compare spot welding …   Australian English dictionary

  • Longitudinal resistance seam welding — Longitudinal resistance seam welding. См. Продольная сварка сопротивлением. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Mash resistance seam welding — Mash resistance seam welding. См. Сварка с формированием шва контактным сопротивлением. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Resistance seam welding — Resistance seam welding. См. Роликовая сварка сопротивлением. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • butt-seam welding — Смотри шовно стыковая сварка …   Энциклопедический словарь по металлургии

  • Welding — is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle ) that cools to… …   Wikipedia

  • welding — Technique for joining metallic parts, usually through the application of heat. Discovered in the 1st millennium AD during attempts to manipulate iron into useful shapes, the technique produced a strong, tough blade. Welding traditionally involved …   Universalium


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