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(19)

(11)

2 572 674

(13)

(51)

IPC

B23D43/00(2006-01-01)

(21) (22)

Application

2014137641/02, 2014-09-16

(24)

Start date

2014-09-16

(22)

Actual filing date

2014-09-16

(45)

Published

2016-01-20

(72)

Inventor

Morozov Aleksandr ViktorovichGorshkov Aleksandr Jur'Evich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennaja Sel'Skokhozjajstvennaja Akademija Imeni P.A. Stolypina"

METHOD OF ELECTROMECHANICAL MANDRELLING Russian patent published in 2016 - IPC B23D43/00

Abstract RU 2572674 C1

FIELD: metallurgy.

SUBSTANCE: invention includes the mandrel bar movement along hole axis, and on the hole surface the strengthened ring areas with different hardness formation by heating of the said ring areas to hardening temperature with simultaneous passing of the electric current through the contact place between the mandrel bar and hole surface. Preliminary the hole surface is covered with cementing paste.

EFFECT: increased wear resistance.

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RU 2 572 674 C1

Authors

Morozov Aleksandr Viktorovich

Gorshkov Aleksandr Jur'Evich

Dates

2016-01-20—Published

2014-09-16—Filed