CN109882078B - A two-way cutting edge polycrystalline diamond compact for high frequency rubble that shakes soon - Google Patents
A two-way cutting edge polycrystalline diamond compact for high frequency rubble that shakes soon Download PDFInfo
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- CN109882078B CN109882078B CN201910332321.4A CN201910332321A CN109882078B CN 109882078 B CN109882078 B CN 109882078B CN 201910332321 A CN201910332321 A CN 201910332321A CN 109882078 B CN109882078 B CN 109882078B
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Abstract
The invention discloses a polycrystalline diamond compact with a bidirectional cutting edge for high-frequency rotary vibration rock crushing, which belongs to the technical field of drilling and well drilling and consists of a first polycrystalline diamond layer, a hard alloy layer and a second polycrystalline diamond layer, wherein the first polycrystalline diamond layer and the second polycrystalline diamond layer have the same structure; the hard alloy layer is clamped between the first polycrystalline diamond layer and the second polycrystalline diamond layer, and two sides of the hard alloy layer are respectively bonded with the first polycrystalline diamond layer and the second polycrystalline diamond layer in a high-temperature high-pressure sintering multi-face combination mode; the first polycrystalline diamond layer and the second polycrystalline diamond layer are respectively provided with a cutting surface, a blade surface and a junction surface; the blade face of by first polycrystalline diamond layer and second polycrystalline diamond layer realizes the two-way broken pore-forming to the hard rock stratum that the abrasiveness is extremely weak under the high frequency rotary oscillation, and is little to the country rock vibration to avoid the unilateral wearing and tearing of conventional single-blade polycrystalline diamond compact, improved polycrystalline diamond compact's life-span.
Description
Technical Field
The invention belongs to the technical field of drilling and well drilling, relates to a high-frequency rotary vibration rock crushing cutter, and particularly relates to a polycrystalline diamond compact with a bidirectional cutting edge for high-frequency rotary vibration rock crushing.
Background
In drilling, the hard rock stratum with extremely weak abrasiveness is characterized in that the rock is compact and complete, the compression-resistant hardness is high, the abrasiveness is very weak, the drilling time of a common diamond bit is extremely low, the lip surface of the bit and the rock are polished mutually, and the phenomenon of slipping of the bit occurs. Drilling becomes increasingly difficult as the depth of drilling increases, and the depth, frequency and thickness of hard, slippery formations increase. The drilling of the stratum is usually completed by adopting a method of combining a diamond drill bit with hydraulic axial impact, torque impact or hydraulic axial impact and torque impact, and the effect is still not ideal. Aiming at the difficulties, the Chinese patent document discloses a high-frequency rotary vibration type rock crushing method and a high-frequency rotary vibration type rock crushing machine tool, which are disclosed in the application number 201811148280.5 in detail, so that the hard rock drilling problem is fundamentally solved, but the PDC (polycrystalline diamond compact) matched with the conventional drilling tool can only realize unidirectional cutting, and the service life of the PDC is short.
Disclosure of Invention
The invention aims to provide a bidirectional cutting edge polycrystalline diamond compact for high-frequency rotary vibration rock crushing drilling tool, which is used for high-frequency rotary vibration rock crushing and generates bidirectional cutting edge high-frequency vibration and rapid micro-cutting into rocks, so that the purpose of high-speed rock breaking and hole forming of the bidirectional cutting edge polycrystalline diamond compact is realized.
In order to achieve the aim, the invention provides a bidirectional cutting edge polycrystalline diamond compact for high-frequency rotary vibration rock crushing, which is characterized by comprising a first polycrystalline diamond layer, a hard alloy layer and a second polycrystalline diamond layer, wherein the first polycrystalline diamond layer and the second polycrystalline diamond layer have the same structure; the hard alloy layer is clamped between the first polycrystalline diamond layer and the second polycrystalline diamond layer, and two sides of the hard alloy layer are respectively bonded with the first polycrystalline diamond layer and the second polycrystalline diamond layer in a high-temperature high-pressure sintering multi-face combination mode;
the first polycrystalline diamond layer and the second polycrystalline diamond layer are respectively provided with a cutting surface, a cutting surface and a joint surface, the included angle between the cutting surface and the horizontal plane is a, the included angle between the cutting surface and the vertical plane is b, the joint surface is the contact surface of the first polycrystalline diamond layer and the second polycrystalline diamond layer with the hard alloy layer, and the included angle between the central lines of the first polycrystalline diamond layer and the second polycrystalline diamond layer is c; when the cutting surface protrudes out of the polycrystalline diamond layer, an included angle a between the cutting surface and the horizontal plane is a positive value, and when the cutting surface is recessed into the polycrystalline diamond layer, the included angle a between the cutting surface and the horizontal plane is a negative value.
Wherein an included angle c between central lines of the first polycrystalline diamond layer and the second polycrystalline diamond layer is less than or equal to 180 degrees.
Wherein, the included angle a between the cutting surfaces of the first polycrystalline diamond layer and the second polycrystalline diamond layer and the horizontal plane is in the range of-10 degrees to 10 degrees.
Through the design scheme, the invention can bring the following beneficial effects: the invention provides a polycrystalline diamond compact with a bidirectional cutting edge for high-frequency rotary vibration rock crushing, which is characterized in that the blade surfaces of a first polycrystalline diamond layer and a second polycrystalline diamond layer realize bidirectional crushing and pore forming on a hard rock stratum with extremely weak abrasiveness under high-frequency rotary vibration, the vibration on surrounding rocks is small, the single-side abrasion of a conventional single-edge polycrystalline diamond compact is avoided, and the service life of the polycrystalline diamond compact is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to the right, and in which:
fig. 1 is a schematic structural diagram of a dual-edged polycrystalline diamond compact in which a is equal to 0 ° to 10 ° and c is equal to 180 ° according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a dual-edged polycrystalline diamond compact according to an embodiment of the present disclosure, where a is-10 to 0, and c is 180;
fig. 3 is a schematic structural diagram of a dual-edged polycrystalline diamond compact according to an embodiment of the present disclosure, where a is equal to 0 ° to 10 ° and c is less than 180 °;
fig. 4 is a schematic structural diagram of a dual-edged polycrystalline diamond compact in which a is equal to-10 ° to 0 ° and c is less than 180 ° according to an embodiment of the present invention.
The respective symbols in the figure are as follows: 1-a first polycrystalline diamond layer; 2-a hard alloy layer; 3-a second layer of polycrystalline diamond; 4-a multi-face joint surface of the polycrystalline diamond layer and the hard alloy layer; 5-cutting the surface; 6-edge surface; a-the included angle between the cutting surface and the horizontal plane; b-the included angle between the edge face and the vertical plane; c-the included angle between the center lines of the polycrystalline diamond layer.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and that the features defined as "first" and "second" do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
The invention provides a bidirectional cutting edge polycrystalline diamond compact for a high-frequency rotary vibration rock crushing drilling tool, and as shown in fig. 1, 2, 3 and 4, the bidirectional cutting edge polycrystalline diamond compact consists of a first polycrystalline diamond layer 1, a hard alloy layer 2 and a second polycrystalline diamond layer 3, and the first polycrystalline diamond layer 1 and the second polycrystalline diamond layer 3 have the same structure; the hard alloy layer 2 is clamped between the first polycrystalline diamond layer 1 and the second polycrystalline diamond layer 3, two sides of the hard alloy layer 2 are respectively bonded with the first polycrystalline diamond layer 1 and the second polycrystalline diamond layer 3 in a high-temperature high-pressure sintering multi-face combination mode, the high-temperature adopted temperature is 1500-1750 ℃, and the high-pressure adopted pressure is 5 GPa-6 GPa; the first polycrystalline diamond layer 1 and the second polycrystalline diamond layer 3 are respectively provided with a cutting surface, an edge surface and a joint surface, the included angle between the cutting surface and the horizontal plane is a, the included angle between the edge surface and the vertical plane is b, the joint surface is the contact surface of the first polycrystalline diamond layer 1 and the second polycrystalline diamond layer 3 with the hard alloy layer 2, namely the polycrystalline diamond layer and the hard alloy layer multi-surface joint surface 4, and the included angle between the central lines of the first polycrystalline diamond layer 1 and the second polycrystalline diamond layer 3 is c; when the cutting surface protrudes out of the polycrystalline diamond layer, an included angle a between the cutting surface and the horizontal plane is a positive value, and when the cutting surface is recessed into the polycrystalline diamond layer, the included angle a between the cutting surface and the horizontal plane is a negative value.
Wherein, the cutting surface of the first polycrystalline diamond layer 1 has two included angles with the horizontal plane, namely an included angle a between the cutting surface and the horizontal plane is equal to 0-10 degrees and an included angle a between the cutting surface and the horizontal plane is equal to-10-0 degrees. The included angle c between the central lines of the two polycrystalline diamond layers is also divided into two cases of being equal to 180 degrees and being less than 180 degrees. Fig. 1 shows a schematic structural view of a dual-edged polycrystalline diamond compact with a equal to 0 ° to 10 ° and c equal to 180 °; fig. 2 shows a schematic structural view of a dual-edged polycrystalline diamond compact with a equal to-10 ° to 0 ° and c equal to 180 °; fig. 3 shows a schematic structural view of a dual-edged polycrystalline diamond compact with a equal to 0 ° to 10 ° and c less than 180 °; fig. 4 shows a schematic structural diagram of a dual-edged polycrystalline diamond compact with a equal to-10 ° to 0 ° and c less than 180 °.
In use, for a harder stratum, the polycrystalline diamond compact with the bidirectional cutting edge and the c of which is less than 180 degrees is easier to cut into rock, and when the a is equal to 0-10 degrees, the impact resistance is better, but the attack force is relatively weaker, and along with the increase of the angle, the impact resistance is increased, and the attack force is reduced; when the angle a is equal to 0-minus 10 degrees, the attacking force is strong, but the impact resistance is weak, and the attacking force is stronger and weaker along with the reduction of the angle.
Claims (1)
1. The polycrystalline diamond compact with the bidirectional cutting edge for the high-frequency rotary vibration rock crushing is characterized by consisting of a first polycrystalline diamond layer (1), a hard alloy layer (2) and a second polycrystalline diamond layer (3), wherein the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3) are consistent in structure; the hard alloy layer (2) is clamped between the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3), and two sides of the hard alloy layer (2) are respectively bonded with the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3) in a high-temperature high-pressure sintering polyhedral combination mode;
the hard alloy layer comprises a first polycrystalline diamond layer (1), a second polycrystalline diamond layer (3), a hard alloy layer (2), a first polycrystalline diamond layer (1), a second polycrystalline diamond layer (3), a second polycrystalline diamond layer (1) and a third polycrystalline diamond layer (3), wherein both the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3) are provided with a cutting surface, a cutting surface and a joint surface, the included angle between the cutting surface and the horizontal plane is a, the included angle between the cutting surface and the vertical plane is b, the joint surface is the contact surface between the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3) and the hard alloy layer (2), and the included angle between the central lines of the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3) is c; when the cutting surface protrudes out of the polycrystalline diamond layer, an included angle a between the cutting surface and the horizontal plane is a positive value, and when the cutting surface is recessed into the polycrystalline diamond layer, the included angle a between the cutting surface and the horizontal plane is a negative value;
cutting surfaces are arranged on two opposite sides of the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3), and the two surfaces are concave surfaces, convex surfaces or planes;
wherein an included angle c between central lines of the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3) is less than or equal to 180 degrees;
wherein the included angle a between the cutting surfaces of the first polycrystalline diamond layer (1) and the second polycrystalline diamond layer (3) and the horizontal plane is in the range of-10 degrees to 10 degrees.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910332321.4A CN109882078B (en) | 2019-04-24 | 2019-04-24 | A two-way cutting edge polycrystalline diamond compact for high frequency rubble that shakes soon |
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| CN201910332321.4A CN109882078B (en) | 2019-04-24 | 2019-04-24 | A two-way cutting edge polycrystalline diamond compact for high frequency rubble that shakes soon |
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| CN109882078B true CN109882078B (en) | 2022-05-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2632288Y (en) * | 2003-07-10 | 2004-08-11 | 大庆石油管理局 | Double-blade artificial synneusis diamond composite sheet |
| US7152701B2 (en) * | 2003-08-29 | 2006-12-26 | Smith International, Inc. | Cutting element structure for roller cone bit |
| WO2012173893A1 (en) * | 2011-06-16 | 2012-12-20 | National Oilwell Varco, L.P. | Multi-layered pdc cutters |
| CN202788628U (en) * | 2012-05-22 | 2013-03-13 | 株洲西迪硬质合金科技有限公司 | Polycrystalline diamond compact (PDC) bit tooth |
| CN203383736U (en) * | 2013-07-23 | 2014-01-08 | 郑州博特硬质材料有限公司 | Double-blade PDC composite percussion drill |
| CN204175191U (en) * | 2014-09-23 | 2015-02-25 | 珠海市钜鑫科技开发有限公司 | A kind of special diamond compact making wearing piece |
| CN206589404U (en) * | 2017-03-14 | 2017-10-27 | 珠海市钜鑫科技开发有限公司 | A kind of inclined diamond compact of glomerocryst layer surface |
| CN106958421B (en) * | 2017-04-10 | 2020-09-15 | 广东钜鑫新材料科技股份有限公司 | Composite piece of shock attenuation PDC combination of restriction depth of penetration |
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