Differences,Between,Electrofus business, insurance Differences Between Electrofusion Welding (EFW) and Resistan
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Electrofusion welding(EFW) is to combine metals by heating the metal between one or several consumable electrodes and the workpiece. Resistance welding is welding that uses a strong current to pass through the contact point between the electrode and the workpiece, and generates heat by the contact resistance.The electric welding arc fully melts the metal and the filler material, and does not require pressure. All the filler metal comes from the electrode.Resistance welding(ERW) is a type of welding method using resistance heat as an energy source, including electroslag welding using slag resistance heat as an energy source and resistance welding using solid resistance heat as an energy source.Resistance welding often uses large currents. In order to prevent arcing on the contact surface and to forge the weld metal, always apply pressure during the welding process.Extended informationWelding achieves the purpose of joining in the following three ways:1. Welding—Heating the workpieces to be welded to locally melt them to form a molten pool. After the molten pool is cooled and solidified, it is joined. If necessary, molten filler can be added to assist it. It is suitable for welding of various metals and alloys. pressure.2. Pressure welding-The welding process must apply pressure to the weldment, which belongs to the processing of various metal materials and some metal materials.3. Brazing—Use a metal material with a lower melting point than the base metal as the brazing material, use the liquid brazing material to wet the base material, fill the gap between the joints, and mutually diffuse with the base material to achieve the link weldment. Suitable for welding of various materials, but also suitable for welding of different metals or dissimilar materials. Article Tags: Resistance Welding, Resistance Heat, Energy Source
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