METHOD OF MANUFACTURE OF MAGNETIC CORE OF STATOR OF SINGLE-PHASE ASYNCHRONOUS MOTOR Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: laminations are produced from ferromagnetic powder by pressing with simultaneous formation of bulges in the form of protrusions on opposite edges of adjacent poles. Magnetic core is properly assembled from separate laminations. Zones with anisotropic electric conductance are made in process of agglomeration of laminations forming magnetic core with the use of diffusion welding at points of their touching. Recessions are formed simultaneously on surfaces of laminations having no bulges uniaxially to them, their shape follows that of bulges and depth is less than height of bulges. EFFECT: facilitated manufacture, reduced cost of manufacture. 2 cl, 4 dwg