METHOD FOR PRESSURE WELDING OF PARTS HEATED WITH AN ARC MOVING IN MAGNETIC FIELD

摘要

PCT No. PCT/SU89/00025 Sec. 371 Date Sep. 25, 1990 Sec. 102(e) Date Sep. 25, 1990 PCT Filed Jan. 26, 1990 PCT Pub. No. WO90/08617 PCT Pub. Date Aug. 9, 1990.A method for pressure welding of parts with heating with an arc moving in magnetic field in which the parts (2,3) are placed coaxially with each other with a working gap ( delta ) between their ends magnetic field is created in the gap (67 ) and electric arc (6) is fired to heat the ends of the parts (2,3). A d-c component of voltage of the arc (6) is measured, and when this component reaches its minimum value corresponding to a temperature of the ends of the parts (2,3) at which plastic deformation of the material of the parts can occur, a pulsed increase in the arc current is carried out, with subsequent upsetting of the parts (2,3).