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2 578 887

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(51)

IPC

B21B19/04(2006-01-01)

(21) (22)

Application

2014139640/02, 2014-09-30

(24)

Start date

2014-09-30

(22)

Actual filing date

2014-09-30

(45)

Published

2016-03-27

(72)

Inventor

Toporov Vladimir AleksandrovichTolmachev Viktor StepanovichPjankov Boris GrigorevichBushin Roman OlegovichPanasenko Oleg AleksandrovichIbragimov Pavel Aleksandrovich

(73)

Holder

Publichnoe Aktsionernoe Obshchestvo Trubnyj Zavod"

METHOD OF PRODUCING HOLLOW SLEEVES AT PIERCER Russian patent published in 2016 - IPC B21B19/04

Abstract RU 2578887 C1

FIELD: technological processes.

SUBSTANCE: invention relates to sleeve piercing at rotary piercer. High accuracy of geometrical parameters of sleeves, reduction of their wall thickness variation is ensured by simultaneous blank entry into contact with both rolls at the moment of the primary capture by turning of one of the disk mill rolls at feed angle larger than feed angle of another roll. Value of feed angle is specified by mathematical relationship.

EFFECT: high accuracy of geometrical parameters of sleeves, reduction of wall thickness variation.

1 cl, 4 dwg

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RU 2 578 887 C1

Authors

Toporov Vladimir Aleksandrovich

Tolmachev Viktor Stepanovich

Pjankov Boris Grigorevich

Bushin Roman Olegovich

Panasenko Oleg Aleksandrovich

Ibragimov Pavel Aleksandrovich

Dates

2016-03-27—Published

2014-09-30—Filed