FIELD: process engineering.
SUBSTANCE: invention can be used for production of carcass-panel structures and those like solids of revolution, e.g. tanks and shells. Revolving welding tool 1 is fed into weld butt and displace along butt line between two welded parts 2. Material heated by friction to plastic state is mixed. Welding is performed at support element 3 of material that features heat conductivity equal to 0.1-0.5 of that of welded material. Substrate 4 made from material of hardness superior to that of welded material is arranged between support element 3 and weld butt 2. Barrier layer 6 is arranged on substrate surface facing the weld butt root 5 to prevent metallurgical interaction between weld material and substrate in area of their contact.
EFFECT: homogeneous flawless weld joint.
2 cl, 4 dwg
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