VIBRATION-ELECTRIC ARC WELDING METHOD AT FEEDING ELECTRODE WIRE AND APPARATUS FOR FEEDING ELECTRODE WIRE

摘要

FIELD: vibration-electric arc welding processes and equipment at feeding electrode wire, possibly in motor and ship building industry branches, at oil and gas production, tool making industry branch.;SUBSTANCE: method comprises steps of continuously feeding electrode wire and imparting to it in addition reciprocation motion of different amplitude. Reciprocation motion of electrode wire end is provided by means of crank-connecting rod mechanism having rod of apparatus for feeding electrode wire by alternating impulses of reciprocation motion. Said rod is mounted on free end of connecting rod; it has opening for clamping wire and it is normal relative to axis of duct for feeding wire. Welding process is realized at burning electric arc cyclically excited due to electrode wire and part short circuiting occurred by action of dynamic force when oscillation amplitude of electrode wire end is maximal. Drops of melt electrode wire are transferred by action of dynamic force between time moments of short circuiting when oscillation amplitude of electrode wire end is minimal. Oscillation amplitude of electrode wire end is determined according to crank radius, angular velocity of crank rotation and length of connecting rod with use of expression at and where S - length of duct for feeding wire; L - distance between rotation axis of crank and slide; b - motion value of slide relative to axis of duct for feeding electrode wire or wire bending value; R - crank radius; ω - angular velocity of crank rotation; t - time; m - length of connecting rod; p - length of rod; L_oa - distance between rotation axis of crank and axis of duct for feeding wire.;EFFECT: improved quality of welding.;2 cl, 4 dwg