FIELD: dimensional treatment of butt zones of structures of different materials, possibly joined by soldering or welding.
SUBSTANCE: treated anode surface of blank is subjected to cold hardening by means of movable tool-electrode on surface portions of metal having less diffusion rate. After drawing tool-electrode apart by value equal to inter-electrode gap, all treated surface is subjected to diffusion. Duration of diffusion process is controlled according to achievement of maximum electric current value. Then treatment cycle is wholly repeated for complete removal of allowance.
EFFECT: enhanced accuracy of treating bimetallic surfaces.
5 dwg, 1 ex
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