FIELD: mechanic engineering.
SUBSTANCE: invention is related to mechanic engineering, namely to vibration treatment processes and can be used for stress relieving in pipes, pipeline units, pipe couplings, welds, by-passes and other items. To ensure effectiveness of inherent stress relieving, items are treated with vibration by exciting and transmitting mechanical oscillations to the treated item. Mechanical oscillations are first transmitted in plane parallel to item axis and then, at least one treating cycle is conducted in plane at an angle to item axis. Vibration treatment is done at mechanical oscillations frequency 0.75-1.25 of natural oscillation frequency.
EFFECT: effectiveness of inherent stress relieving in items.
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