FIELD: technological processes.
SUBSTANCE: in the zone where the molten metal bath crystallizes, the molten flux is removed. The forced cooling of the weld joint is carried out on the side of the flux-free weld seam from the temperature of the welded joint, not less than the temperature of the transformation beginning of the austenite Ar3 and to the temperature of its termination. Forced cooling is carried out by supplying water, air, or a combination thereof. Before removing the molten flux, unmelted flux is removed.
EFFECT: increasing the toughness of the welded joint at negative temperatures, reducing the coarse grain zone.
3 cl, 1 dwg, 1 tbl
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