Method of producing a forging

Metal working – Method of mechanical manufacture – Combined manufacture including applying or shaping of fluent...

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2989432, 29894324, 72352, 72356, B21B 146

Patent

active

057298831

ABSTRACT:
A method of producing a disc of an automotive road wheel by using an aluminum alloy as a material. The producing method comprising the following steps: (1) casting a disc material including an annular spoke section which has a ridge and is formed with a depression, the depression defined by a bottom wall; and (2) forging the disc material to obtain the forged disc by applying a processing degree of not less than 15% to the bottom wall of the spoke section and by applying a stress of not less than 50 MPa to the ridge of the spoke section.

REFERENCES:
patent: 4408379 (1983-10-01), Kusano et al.
patent: 4624038 (1986-11-01), Walther
patent: 5065510 (1991-11-01), Ostermann et al.
patent: 5441334 (1995-08-01), Botterman et al.
patent: 5446962 (1995-09-01), Matossian et al.

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