FIELD: welding processes and equipment, manufacture of metallic structures.
SUBSTANCE: method comprises steps of welding filling layers of multi-pass joints at electric current intensity, voltage, welding rate and heating temperature determined with allowance ±5% according to preset length of welded joint, depth fusion of previous pass and critical cooling rate with use of given equation system.
EFFECT: enhanced quality of welded joints due to elimination of quenching structure formation in metal of welded multi-pass joint, lowered time period of welding, reduced cost of production process.
1 ex
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