METHOD OF MAKING HOLLOW STEPPED PARTS WITH BRANCHES AT USE OF PRESSURIZED FLUID Russian patent published in 1997 - IPC

Abstract RU 2098210 C1

FIELD: machine engineering, namely, production of T-pieces, rotary pipe elbows and other stepped hollow parts with branches. SUBSTANCE: end portions of tubular blank are reduced in cone die at use of outer counterpressure for shaping cone transition portions between terminal steps and central step of part. Then branch is shaped at simultaneous axial upsetting and bead is formed between part steps. EFFECT: enhanced efficiency. 2 dwg

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RU 2 098 210 C1

Authors

Pogorelov Ju.M.

Aljutin M.D.

Kolesnikov K.I.

Lashevich V.I.

Dates

1997-12-10—Published

1996-04-01—Filed