Magnetically impelled arc butt (MIAB) welding process and parameters effects on performance - Review

Magnetically Impelled Arc Butt (MIAB) welding is a state-of-the-art method that can replace conventional welding. Welding in a furnace with this method involves rapidly spinning a spark to produce uniform burning at the joint. An external magnetic field rotates the arc. The MIAB apparatus is sturdy and relatively simple in design, requiring modest upset pressure as compared to technique such as friction welding. This process has internal flash is low, weld times are shorter, metal loss is less, heating is consistent, and machine maintenance is less. The current used for MIAB ranges from 500A to 1500A depending on the tubes. MIAB has been successfully welded at wall thicknesses ranging from 0.6mm to 10mm and cross sections upto 2000mm2. The MIAB welding apparatus firmly clamps the parts together with a tiny space between their extremities. The first step in this procedure is the formation of a DC circuit between the terminals of the individual components. The extremities of the components are heated to high temperatures as a result of this arc’s rapid circumnavigation of the joint, induced by a steady radial magnetic field. The components are brought together in the second stage under a predetermined forging pressure. The meatal tubes are held in place by the fixture. The MIAB welding process parameters, experimental conditions, and analysis are reported in this review.