SU1458547A1

SU1458547A1 - Diamond drilling crown bit

Info

Publication number: SU1458547A1
Application number: SU864151452A
Authority: SU
Inventors: Мурат Габдуллович Тлеуов; Василий Федорович Фадеев; Марат Тлеубаевич Аубакиров; Анатолий Петрович Закора; Лариса Алексеевна Фадеева
Original assignee: Казахский политехнический институт им.В.И.Ленина
Priority date: 1986-07-18
Filing date: 1986-07-18
Publication date: 1989-02-15

Abstract

Изобретение относитс к горной промети и предназначено дл породоразрушаю- щих инструментов дл бурени скважин. Цель - повышение износостойкости коронки . Она содержит короночное кольцо 1 с закрепленными на нем приварочным слоем 2 и матрицей 3, разделенной промывочными пазами на сектора, в которых размещены вставки 5 сверхтвердого материала. Вставки расположены на внутренней и наружной поверхност х сектора с выходом на рабочий торец коронки. Прочность алмазов во вставках 5 выше прочности алмазов матрицы. Концентраци алмазов во вставках 5 в 1,2: 1,25 или 1,5 раза выше концентрации алмазов матрицы. Вставки 5 работают как инден- тор, т. е. внедр ютс в горную породу прежде основной массы алмазов матрицы, и воспринимают на себ боьшую долю нагрузки . Это сопровождаетс повышением механической скорости бурени и стойкости буровой коронки. 3 ил.The invention relates to the mining industry and is intended for rock cutting tools for drilling wells. The goal is to increase the wear resistance of the crown. It contains a corona ring 1 with a welding layer 2 fixed on it and a matrix 3 divided by washing slots into sectors in which the inserts 5 of superhard material are placed. The inserts are located on the inner and outer surfaces of the sector with access to the working end of the crown. The strength of diamonds in the inserts 5 is higher than the strength of the diamond matrix. The concentration of diamonds in inserts 5 is 1.2: 1.25 or 1.5 times higher than the concentration of the diamond matrix. Inserts 5 work as an indenter, i.e., they are introduced into the rock before the bulk of the diamond matrix, and take on a larger share of the load. This is accompanied by an increase in the mechanical drilling speed and durability of the drill bit. 3 il.

Description

.2.2

Claims

Claim

Diamond drill bit containing a core ring with a welding layer and a matrix fixed on it, divided by flushing grooves into sectors in which inserts of superhard material are located, characterized in that, in order to increase the wear resistance of the crown, inserts of superhard material are placed on the inner and outer surfaces of the sector with access to the working end face of the crown, while the strength of diamonds in the inserts is higher than the strength of the diamonds of the matrix, and the concentration of diamonds in the inserts is 1.2; 1.25 or

1.5 times the concentration of diamond matrix.

5 4

Compiled by A. Khromin Redagor M. Tsitkina Order 341/37 Tehred I. Veres Corrector M. Sharoshi Circulation 514 Subscription

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