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2 580 262

(13)

(51)

IPC

B21B25/02(2006-01-01)

(21) (22)

Application

2014130739/02, 2014-07-24

(24)

Start date

2014-07-24

(22)

Actual filing date

2014-07-24

(45)

Published

2016-04-10

(72)

Inventor

Bogatov Aleksandr AleksandrovichSalikhjanov Denis Rinatovich

(73)

Holder

Federalnoe Gosudarstvennoe Avtonomnoe Obrazovatelnoe Uchrezhdenie Vysshego Professionalnogo Obrazovanija Federalnyj Universitet Imeni Pervogo Prezidenta Rossii B.N. Eltsina"

MANDREL FOR CALIBRATING THE INTERNAL CHANNEL PIPES Russian patent published in 2016 - IPC B21B25/02

Abstract RU 2580262 C2

FIELD: metallurgy.

SUBSTANCE: invention relates to metal forming and is used in the production tubing in the manufacture of pipes for very precise internal diameter. Mandrel has an operating part and positioned behind it in the form of a gauge portion of the cylindrical portion.

EFFECT: decrease in intensity of non-contact deformation of the pipe during the dispensing provided by the fact that the mandrel has a guide portion of the elastic member, and the working portion of the mandrel has a parabolic shape which blends in with the half-angle conical surface α vertex = 1÷3°.

2 cl, 3 dwg, 1 tbl

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RU 2 580 262 C2

Authors

Bogatov Aleksandr Aleksandrovich

Salikhjanov Denis Rinatovich

Dates

2016-04-10—Published

2014-07-24—Filed