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2 465 112

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IPC

B23P15/00(2006-01-01)

(21) (22)

Application

2010154827/02, 2010-12-29

(24)

Start date

2010-12-29

(22)

Actual filing date

2010-12-29

(45)

Published

2012-10-27

(72)

Inventor

Aksenov Leonid BorisovichKomaishko Sergej GeorgievichKomaishko Andrej GeorgievichKulik Georgij NikolaevichMoisej Mikhail Vil'Gel'MovichSuzdal' Konstantin Valer'EvichTonkonog Anton Jur'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF MAKING DRILL STRING SECTION LOCKS Russian patent published in 2012 - IPC B23P15/00

Abstract RU 2465112 C2

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to making drill string section locks, each being made up of case, sleeve, and four small and two large inserts. Lock case blank is made from two forged pieces from high-strength impact-resistance steel welded together. Sleeve blank is made from three forged pieces. Larger insert blanks are made from two forged pieces varying in strength and impact resistance, welded together. Small insert blanks are made forged pieces from high-strength impact-resistance steel welded together. Roots of weld seams are removed by machining from all blanks.

EFFECT: higher cost efficiency.

8 cl, 5 dwg

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RU 2 465 112 C2

Authors

Aksenov Leonid Borisovich

Komaishko Sergej Georgievich

Komaishko Andrej Georgievich

Kulik Georgij Nikolaevich

Moisej Mikhail Vil'Gel'Movich

Suzdal' Konstantin Valer'Evich

Tonkonog Anton Jur'Evich

Dates

2012-10-27—Published

2010-12-29—Filed