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2 294 425

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(51)

IPC

E21B10/16(2006-01-01)

(21) (22)

Application

2005101169/03, 2005-01-19

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Start date

2005-01-19

(22)

Actual filing date

2005-01-19

(45)

Published

2007-02-27

(72)

Inventor

Gilev Anatolij VladimirovichButkin Vladimir DmitrievichChesnokov Valerij TimofeevichNekhoroshev Dmitrij BorisovichNekhorosheva Ljudmila Vasil'EvnaStovmanenko Andrej Jur'Evich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Universitet Tsvetnykh Metallov I Zolota"

METHOD AND DEVICE FOR HARD-ALLOY TEETH REMOVAL FROM WORN DRILLING TOOL Russian patent published in 2007 - IPC E21B10/16

Abstract RU 2294425 C2

FIELD: mining, particularly to recycle worn drilling tools adapted to drill blast, prospecting, gas, oil and other holes.

SUBSTANCE: method involves separating teeth from preheated rock-cutting tool by applying inertia forces P_in generated by rock-cutting tool rotation, which exceeds residual pressing force P_res acting on hart-alloy teeth after simultaneous heating of outer surface and interior of rock-cutting member up to temperature providing three-dimensional expansion thereof so that P_in should be greater than P_res. Device for above method realization comprises rock-cutting tool fastening unit, heater, oscillator, drive, which provides rock-cutting tool reciprocation and rotation and teeth accumulation bin. Heater comprises outer rock-cutting tool surface heating inductor and rock-cutting tool interior heating inductor.

EFFECT: increased efficiency of hard-alloy teeth removal from drilling tool.

4 cl, 4 dwg, 1 ex, 3 tbl

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RU 2 294 425 C2

Authors

Gilev Anatolij Vladimirovich

Butkin Vladimir Dmitrievich

Chesnokov Valerij Timofeevich

Nekhoroshev Dmitrij Borisovich

Nekhorosheva Ljudmila Vasil'Evna

Stovmanenko Andrej Jur'Evich

Dates

2007-02-27—Published

2005-01-19—Filed