FIELD: machine building.
SUBSTANCE: according to method structure barrier is created on top of crack by means of its local heating, melting and cooling in air till formation of nucleus with monolithic structure of cold metal overlapping crack minimum at value of 1/2 of its diametre; further, cold nucleus is subject to pulse thermo-treatment heating with light current and to cogging for removal of weld tension; also whole process is performed with contact spot or seam welding machine.
EFFECT: invention ensures increased residual durability of structures of thin sheet material out of structural low and medium carbon steel; also it facilitates automating process and expanding its functionality.
3 dwg
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