METHOD OF SHAPING NON-SYMMETRICAL CHANNEL-TYPE SECTION Russian patent published in 1995 - IPC

Abstract RU 2043801 C1

FIELD: metal pressure forming. SUBSTANCE: method, comprising steps of successive bending under of s strip blank by rolls in rough, intermediate and prefinal passes with formation of a web and flanges and rotating the web in a vertical plane to a side of a large flange, also includes steps of rotating the web in a first prefinal pass by an angle γ=(9-11) degrees with simultaneous bending under of a small flange by the same angle and turning the web in a reverse direction at third pass by the angle g with simultaneous bending under of the large flange and bending of the small flange by the same angle; passing the strip at second prefinal pass between rolls, had been drawn apart. EFFECT: enhanced quality of channel-type non-symmetrical sections with lowered labor consumption of their production process. 1 cl, 1 dwg

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RU 2 043 801 C1

Authors

Antipanov V.G.

Gridnevskij V.I.

Afanas'Ev V.F.

Ruzankin K.V.

Dates

1995-09-20—Published

1992-09-18—Filed