METHOD FOR FORMING METAL-COATING BY ELECTRIC CONTACT WELDING OF WELDING WIRE Russian patent published in 2018 - IPC B23K11/06 

FIELD: metallurgy.

SUBSTANCE: invention can be used to produce an electric contact welding of a metal covering of wires on flat or outer cylindrical surfaces of parts, in particular when the cutting part of the plowshare plow is hardened. At the same time, two filler wires touching each other are welded together by one roller-electrode to produce a double welded metal coating roller. Filler wires are additionally stretched with an unequal force applied to each of them and providing a difference of their relative longitudinal plastic deformations of at least 0.14. Filler wires of different cross-sections are used from the condition for forming a metal covering with rollers of equal height, and a wire that is stretched with a greater force is selected having a larger cross-section.

EFFECT: method ensures the production of two parts of the welded roller of equal height.

1 cl, 3 dwg, 1 ex