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2 531 077

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IPC

B21K5/00(2006-01-01)

B21B25/00(2006-01-01)

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Application

2012127246/02, 2012-06-21

(24)

Start date

2012-06-21

(22)

Actual filing date

2012-06-21

(45)

Published

2014-10-20

(72)

Inventor

Komaishko Sergej GeorgievichKulik Georgij NikolaevichMoisej Mikhail Vil'Gel'MovichSmirnova Angelina Grigor'EvnaBurenkov Aleksandr Evgen'EvichPinjagin Sergej AleksandrovichShakhmin Sergej IvanovichMelikjan Garnik Arovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

PRODUCTION OF MANDRELS FOR PIPE ROLLING MILLS Russian patent published in 2014 - IPC B21K5/00 B21B25/00

Abstract RU 2531077 C2

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used in production of tolling mill mandrels. Worn-out mandrels made of complex-alloyed chromium tool steel are assembled to bundle to be subjected to remelting. Produced ingot is annealed and forged at radial forging machine. Then, forged piece is annealed, heat treated, edge cutting machining, grinding, chromium plating and honing. Then, the mandrel is subjected to tests by non-destructive methods in compliance with preset operating characteristics.

EFFECT: reuse of expensive material for production of mandrels.

1 ex

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RU 2 531 077 C2

Authors

Komaishko Sergej Georgievich

Kulik Georgij Nikolaevich

Moisej Mikhail Vil'Gel'Movich

Smirnova Angelina Grigor'Evna

Burenkov Aleksandr Evgen'Evich

Pinjagin Sergej Aleksandrovich

Shakhmin Sergej Ivanovich

Melikjan Garnik Arovich

Dates

2014-10-20—Published

2012-06-21—Filed