INDUCTOR Russian patent published in 1996 - IPC

FIELD: treatment and welding of metals by heavy magnetic fields. SUBSTANCE: inductor has primary turn connected to current source and short circuited secondary turn, both turns being coaxial, and provided with semicylindrical slots pointed to each other for placing in workpiece hole. Axis of working hole is perpendicular to axis of turns. Part of turns i made replaceable. width of secondary turn of replaceable part is 13-26% smaller than width of primary turn. Magnetic filed concentrator in the form of segment cut of turn is arranged in place of location of working hole. Turns can be provided with additional semicylindrical slots for fitting long-cut articles with clearance in hole thus formed. Invention makes it possible to carry out magnetoimpulse welding of pipes differing in diameter and shape at site. EFFECT: simple design, long service life, easy to manufacture. 2 cl, 2 dwg