FIELD: metallurgy.
SUBSTANCE: group of inventions relates to the processing of metals by pressure and can be used for the manufacture of multilayer cores of an electric motor from electrical steel sheets. From a stack of electrical steel sheets with a thickness of 0.35 mm or less and a Vickers hardness of 150 to 400, parts of the core elements are cut down. Gap is selected between the punch and the die, taking into account the minimum sheet thickness and the total thickness of the stack of sheets, and a pressure of 0.10 MPa or more is applied.
EFFECT: loss of stability in the core decreases.
7 cl, 8 dwg
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Year |
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Number |
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