FIELD: process engineering.
SUBSTANCE: invention relates to bonding of two elements by arc welding in the medium of inter gas (versions). Welding elements consist of self-quenching steel alloy, for example, material T23 or T24. Butt is created between said welding elements to be expanded, for example, from outer side to inner side. First, ply is built up in weld root. Then, ply adjoining the weld root ply is built up to fill said joint by at least 90%. At least one cover ply is built up to abut on filling ply from the weld outer side. Welding current strength is used whereat temperature on weld root inner side corresponds to temperature AC3 for particular material of welding elements, or temperature of about 600°C or 700°C, or temperature AC1 for every particular material of welding elements.
EFFECT: weld with high crack resistance.
22 cl, 10 dwg
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