METHOD OF MAKING CONE HOLLOW ARTICLES WITH FLAT FLANGE AND OPENING IN ITS BOTTOM Russian patent published in 1994 - IPC

Abstract RU 2014929 C1

FIELD: sheet material forming. SUBSTANCE: method comprises steps of preliminary drawing a semifinished product in the form of a hollow article with flange and a opening in a bottom portion, dimensions of lateral surface of the article being no more, than dimensions of the lateral surface of a ready article; performing a final shaping by forming the lateral surface and the flange of the hollow semifinished product simultaneously with beading the opening at the flange, being jammed; finally forming the bottom. EFFECT: lowered metal consumption. 1 cl, 3 dwg

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RU 2 014 929 C1

Authors

Baginskij V.A.

Dimanis V.I.

Nikolaev V.A.

Shvidak I.A.

Dates

1994-06-30Published

1991-12-28Filed