MANUFACTURING OF METAL PART PIECE USING MIG METHOD WITH PULSATING CURRENT AND PULSATING DELIVERY OF WIRE Russian patent published in 2014 - IPC B23K9/04 

FIELD: metallurgy.

SUBSTANCE: at least a piece of metal part is formed with the width L and the height H. Metal is delivered using welding equipment by welding rod in shielding gas environment (MIG), containing pulsating current generator and device for wire pulsating delivery. Current value and wire delivery are measured. Metal is formed by CMT method in the form of deposited beads (10) in several serial arranged layers. At least for one of two layers B, C arranged above the first layer A, realised is the first deposited bead (11', 21') being centred on cross-section of two first deposited beads (11, 21) of the first layer A. Then the second deposited bead is realised (12', 22') considering overlap on the first deposited bead (11', 21'). Quantity of deposited beads is so that the surface covered with these deposited beads is exceeding width L of this part piece.

EFFECT: high quality of beds deposition of considerable cross-section with minimum residual deformation of deposited part.

6 cl, 4 dwg