Method for the mass production of rotors for electric motors

Details Method for the mass production of rotors for electric motors Method for the mass production of rotors for electric motors

1991-08-14

1992-11-10

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164108, B22D 1900

Patent

active

051615975

ABSTRACT:
A method for the mass production of squirrel-cage rotors for electric motors includes the step of die casting-in-place rotor bars within the slots formed by stacked steel laminations. The molten metal alloy utilized in the method consists essentially of aluminum having an iron content of at least 0.4%. The incorporation of this amount of iron in the otherwise pure aluminum substantially reduces the number of defective rotors produced without degrading motor performance to any significant degree.

REFERENCES:
patent: 2991378 (1961-07-01), Barney
patent: 4214921 (1980-07-01), Henderson
Metals Handbook, ninth Ed. vol. 15 pp. 286-295.

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