FIELD: mechanical engineering.
SUBSTANCE: pilot hole is drilled in the details, which has a greater diameter than the value of landing outside diameter of the metal tube, whose internal diameter corresponds to a given diameter of the through-hole. The metal tube is inserted into the pilot hole with interference with a length, that is greater than the height of the base hole, is connected to the protruding end of the tube and to the details of the electrodes and produce their contact welding at the contacting surfaces, after which protruding ends of the tubes are cut and ends flush with the workpiece.
EFFECT: obtaining the through-holes of small diameter, reducing the complexity of their manufacture.
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