METHOD FOR EXPANDING BLANKS Russian patent published in 2003 - IPC

Abstract RU 2209704 C1

FIELD: plastic metal working, possibly manufacture of tube, namely expanding hollow blanks of different high-cost metals and alloys such as nickel or titanium. SUBSTANCE: method for expanding blanks comprises steps of placing between blank and cut-off ring technological washer having outer diameter equal to that of container or less than it and axial opening corresponding to axial opening of blank; using technological washer made of material having deformation resistance exceeding that of blank material; realizing expanding process at forming flash of material of technological washer. EFFECT: elimination of flash forming of blank material, increased factor of using blank metal. 2 dwg

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RU 2 209 704 C1

Authors

Smirnov V.G.

Gavrilov A.K.

Krokhin B.G.

Kalinin V.S.

Danovskij N.G.

Dates

2003-08-10—Published

2001-11-28—Filed