METHOD OF MANUFACTURE OF THREADED PART Russian patent published in 1995 - IPC

FIELD: threading. SUBSTANCE: method comprises operations of formation of helical line with subsequent attachment of it to the surface of revolution. Helical line is made of round section wire 1 and secured with plug welds through holes in walls 2 of the surfaces of revolution. The dimensions of holes are smaller than those of wire. The holes are made in a helical line. The wall thickness of the surface of revolution is smaller than wire dimensions. The points of helical line contact with the surface of revolution are strengthened by welding (soldering) with formation of welds 3 not extending beyond the limits determined by wire dimensions. EFFECT: facilitated procedure. 3 cl, 2 dwg