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(19)

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2 101 109

(13)

(51)

IPC

(21) (22)

Application

96123349/02, 1996-12-10

(22)

Actual filing date

1996-12-10

(45)

Published

1998-01-10

(72)

Inventor

Sokolovskij V.I.Smirnov V.G.Smirnov G.V.

(73)

Holder

Aktsionernoe Obshchestvo Verkhnesaldinskoe Metallurgicheskoe Proizvodstvennoe Ob"Edinenie

DRAWING DIE Russian patent published in 1998 - IPC

Abstract RU 2101109 C1

FIELD: plastic metal working, namely production of tubes and shapes. SUBSTANCE: drawing die includes body, hard-alloy inserts pressed-in to said body and one-piece sleeve. Said body is made of two yokes mutually opposite pressed one to another. Said hard-alloy inserts are in the form of sectors. One-piece sleeve is made of material with less hardness than that of hard-alloy inserts. Drawing hole of tool has reducing portion whose length is equal to width of said sleeve and squeezing portion. Members of drawing die made of different-hardness materials are arranged according to differential distribution of specific pressure of tubular blank upon tool at drawing process. EFFECT: enhanced wearability of drawing die due to lowered volume of hard-alloy inserts, decreased consumption of hard alloy material. 2 dwg

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RU 2 101 109 C1

Authors

Sokolovskij V.I.

Smirnov V.G.

Smirnov G.V.

Dates

1998-01-10—Published

1996-12-10—Filed