CN202165016U

CN202165016U - Diamond bit provided with composite matrix body

Info

Publication number: CN202165016U
Application number: CN2011202772501U
Authority: CN
Inventors: 杨春; 宋玉印; 杨俊德; 张津伟; 孔令; 邵平军; 彭正琼; 李雷
Original assignee: Zhongkuang Resources Exploration Co Ltd
Current assignee: Zhongkuang Resources Exploration Co Ltd
Priority date: 2011-08-01
Filing date: 2011-08-01
Publication date: 2012-03-14
Anticipated expiration: 2021-08-01

Abstract

A diamond bit provided with a composite matrix body comprises a steel body (20) and a matrix body (10). The matrix body comprises at least one first matrix block (11) and at least one second matrix block (12). The first matrix block comprises a first inner layer (111), a first intermediate layer (112) and a first outer layer (113) in the radial direction of the steel body; and diamonds are embedded in the first inner layer and the first outer layer only. The second matrix block comprises a second inner layer (121), a second intermediate layer (122) and a second outer layer (123) in the radial direction of the steel body; and the diamonds are embedded in the second intermediate layer only. After the diamond bit is used for a period of time, the part with no diamond in the matrix body is abraded before the part containing the diamonds in the matrix body, the contact area of the labial surface of the matrix body and rocks is reduced, and the pressure that is applied to the rocks by each diamond is increased, so that diamond bit is easier to crush the rocks. The diamond bit has the advantages of high drilling speed and high production efficiency.

Description

Diamond bit with composite casing

Technical field

The utility model relates to a kind of diamond bit, particularly a kind of diamond bit with composite casing, hard creeping into to firm hard formation during this drill bit can be widely used in.

Background technology

Diamond bit is with sharp, wear-resisting and can be cutting edge from sharp natural diamond or diamond, firmly to solid rock, also can be used for creeping into steel concrete, pottery, refractory material, cement products etc. in mainly being applicable to.Diamond bit generally comprises steel body, carcass, cutting edge and hydrophthalmia.Wherein most widely used is the geological prospecting coring bit, and this drill bit can be divided into table edge drill bit and impregnated bit.Table edge drill bit is that diamond is embedded on the working surface of drill bit according to certain rules, and this drill bit can wearing and tearing along with using.Impregnated bit is that carcass all plates diamond inside with diamond and the made together drill bit of carcass mix, when drill bit is worked, diamond along with the continuous exposure of the wearing and tearing of carcass, work, come off, exposure again.This drill bit is because labial surface and rock surface contact area are big, and drilling efficiency is lower.

The utility model content

The purpose of the utility model provides a kind of fractured rock effectively, has the diamond bit with composite casing of higher drilling speed.

The utility model provides a kind of diamond bit with composite casing, comprises a steel body and the carcass that takes shape in said steel body.Carcass comprises at least one first mole and at least one second mole.First mole radially comprises first la m, first intermediate layer and first outside layer along diamond bit, and only first la m and first outside layer stud with diamond.Second mole radially comprises second la m, second intermediate layer and second outside layer along diamond bit, only studs with diamond in second intermediate layer.

In a kind of exemplary embodiment of the diamond bit with composite casing, first mole and second mole evenly distribute around the axle center of diamond bit.

In a kind of exemplary embodiment of the diamond bit with composite casing, first mole is identical with the quantity of second mole, and the space is provided with.

In a kind of exemplary embodiment of the diamond bit with composite casing, first mole is that three and second mole are three.

The diamond bit that the utility model provides with composite casing; Do not stud with in first mole that adamantine first intermediate layer ratio studs with adamantine first la m and first outside layer is more easy to wear; After using a period of time, the labial surface of first mole forms a concave station; In like manner, after use a period of time, the labial surface of second mole can form a boss.The contact area of labial surface and rock reduces, the pressure of unit area increases, every diamond of bit matrix labial surface increases the pressure of rock.Diamond drill machine easy fractured rock on first watch like this, the slow problem of rate of penetration to the firm hard formation firmly in having solved provides the diamond bit that a kind of rate of penetration is fast, production efficiency is high.

Hereinafter will be with clear and definite understandable mode, and the accompanying drawings preferred embodiment further specifies above-mentioned characteristic, technical characterictic, advantage and the implementation thereof of diamond bit with composite casing.

Description of drawings

Fig. 1 be have composite casing diamond bit a kind of specific embodiment the axial section sketch map.

Fig. 2 is the carcass floor map with diamond bit of composite casing.

Fig. 3 be diamond bit with composite casing use after a period of time the axial section sketch map.

Label declaration

10 carcasses

20 steel bodies

11 first moles

111 first la ms

112 first intermediate layers

113 first outside layers

12 second moles

121 second la ms

122 second intermediate layers

123 second outside layers

13 concave stations

14 boss.

The specific embodiment

Understand for technical characterictic, purpose and effect to utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present, identical label is represented identical parts in each figure.

For making drawing succinct, only schematically shown out the part relevant among each figure with the utility model, they do not represent its practical structures as product.In addition, so that drawing succinctly is convenient to understand, the parts that in some figure, have same structure or function have only schematically illustrated one of them, or have only marked one of them.

" interior " " outward " in the utility model do not represent the absolute position of each parts, just representes their relativeness.

The diamond that uses in the utility model comprises natural and diamond.

Fig. 1 be have composite casing diamond bit a kind of specific embodiment the axial section sketch map.Diamond bit as shown in Figure 1 comprises a steel body 20 and the carcass 10 that takes shape in steel body 20.Carcass 10 comprises first mole 11 and second mole 12.First mole 11 radially comprises first la m 111, first intermediate layer 112 and first outside layer 113 along steel body 20.First la m 111 and first outside layer 113 stud with diamond, and first intermediate layer 112 does not stud with diamond.Second mole 12 comprises radially that along steel body 20 second la m 121, second intermediate layer 122 and second outside layer, 123, the second intermediate layers 122 stud with diamond, and does not stud with diamond at second la m 121 and second outside layer 123.

As shown in Figure 2, in a kind of preferred embodiments of the diamond bit with composite casing, first mole 11 and second mole 12 evenly distribute around the axle center of steel body 20.First mole 11 is three, and second mole 12 is three, and their spaces are provided with.First mole 11 here and the number of second mole 12 can be different with the overall dimensions of drill bit, the geological conditions of drill bit use or the material of drill bit etc.

Owing to the utlity model has in the diamond bit of composite casing; Do not stud with in first mole that adamantine first intermediate layer ratio studs with adamantine first la m and first outside layer is more easy to wear; After using a period of time, the labial surface of first mole forms a concave station 13; In like manner, after use a period of time, the labial surface of second mole can form a boss 14.The contact area of labial surface and rock reduces, the pressure of unit area increases, every diamond of bit matrix labial surface increases the pressure of rock.Diamond drill machine easy fractured rock on first watch like this, the slow problem of rate of penetration to the firm hard formation firmly in having solved provides a kind of rate of penetration fast, constant product quality, the diamond bit that production efficiency is high.

The carcass 10 and the steel body 20 of the utility model can adopt the Thermocompressed sintering and forming in present technique field, repeat no more at this.

In this article, " schematically " expression " is served as instance, example or explanation ", should any diagram, the embodiment that be described to " schematically " in this article be interpreted as a kind of preferred or have more the technical scheme of advantage.

The listed a series of detailed description of preceding text only is specifying to the feasibility embodiment of the utility model; They are not the protection domain in order to restriction the utility model, allly do not break away from equivalent embodiment or the change that the utility model skill spirit done and all should be included within the protection domain of the utility model.

Claims

1. the diamond bit that has composite casing comprises a steel body (20) and takes shape in the carcass (10) of said steel body, it is characterized in that:

Said carcass (10) comprises at least one first mole (11) and at least one second mole (12);

Said first mole (11) radially comprises first la m (111), first intermediate layer (112) and first outside layer (113) along said diamond bit; Only stud with diamond at said first la m (111) and first outside layer (113);

Said second mole (12) radially comprises second la m (121), second intermediate layer (122) and second outside layer (123) along said diamond bit; Only stud with diamond in said second intermediate layer (122).

2. the diamond bit with composite casing as claimed in claim 1, wherein said first mole (11) and said second mole (12) evenly distribute around the axle center of said diamond bit.

3. according to claim 1 or claim 2 the diamond bit with composite casing, wherein said first mole (11) is identical with the quantity of said second mole (12), and the space is provided with.

4. it is three with said second mole (12) that the diamond bit with composite casing as claimed in claim 3, wherein said first mole (11) are three.