METHOD OF RESISTANCE WELDING Russian patent published in 2006 - IPC B23K11/10 B23K28/02 B23K20/14 

FIELD: mechanical engineering; welding.

SUBSTANCE: invention relates to welding and it can be used in manufacture of structural members of materials featuring high plastic properties in zones of temperatures of recrystallization, particularly, in manufacture of frame members of heat liberating assemblies of nuclear reactors manufactured of zirconium alloys. Proposed method of resistance welding with simultaneously putting two weld spots of mainly coaxially arranged parts, includes compression of parts and heating of welding zone with electric current at partial shunting. Compression is done with forming of line of contact along generatrices of parts. Heating is carried out first with forming of zone of higher plasticity along line of contact of parts generatrix in which sections of diffusion character connection are formed, and at further heating, sections of cast nugget are formed in middle part of weld spots. When forming sections of cast nugget, zone of melting is made not exceeding half of area of weld spot, and at beginning of metal melting, welding current is cut off.

EFFECT: improved quality of welds, reduced labor input in manufacture of parts.

2 cl, 3 dwg