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2 177 864

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IPC

(21) (22)

Application

99114757/02, 1999-07-07

(24)

Start date

1999-07-07

(22)

Actual filing date

1999-07-07

(45)

Published

2002-01-10

(72)

Inventor

Makurin L.V.Grigor'Ev A.G.Davydov V.Ja.Zagudajlov Ju.V.Gubin Ju.G.Govorukhin A.I.

(73)

Holder

Oao Trubnyj Zavod"

METHOD FOR RESTORING THREADED SINGLE-USE PLATES (ITS VARIANTS) Russian patent published in 2002 - IPC

Abstract RU 2177864 C2

FIELD: metal cutting, namely rational exploitation of cutting tools at cutting thread on end portions of oil tubes. SUBSTANCE: method for enhancing cutting properties of restored hard-alloy plates at using one cutting tool comprises steps of regrinding threaded plates along back profiled surface and along surface of chip groove in such a way that to remove the whole worn volume along back surface and to restore parameters of chip groove along front surface. EFFECT: enhanced quality parameters of restored plates. 4 cl, 5 dwg

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RU 2 177 864 C2

Authors

Makurin L.V.

Grigor'Ev A.G.

Davydov V.Ja.

Zagudajlov Ju.V.

Gubin Ju.G.

Govorukhin A.I.

Dates

2002-01-10—Published

1999-07-07—Filed