CN209687419U - A kind of tip diamond compact - Google Patents
A kind of tip diamond compact Download PDFInfo
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- CN209687419U CN209687419U CN201822121412.7U CN201822121412U CN209687419U CN 209687419 U CN209687419 U CN 209687419U CN 201822121412 U CN201822121412 U CN 201822121412U CN 209687419 U CN209687419 U CN 209687419U
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- composite layer
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- tip
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Abstract
The utility model provides a kind of tip diamond compact, including being mutually butted the hard alloy substrate and diamond composite layer that are combined into, two layers of ladder-like faying face that there are two horizontal planes extended in the horizontal plane and vertical direction face to be formed for hard alloy substrate and diamond composite layer；The faying face makes the outer surface on the outside of faying face be stepped cylindrical body side surface；It is occupied on the side cylindrical side compared with many areas in diamond composite layer relative to hard alloy substrate, the diamond composite layer outer surface opposite with faying face includes at least the sharp face two sides in a sharp face in upper end being pointed at the side of cylindrical body and the upper end and two tangent symmetrical sections of cylindrical sides, one section of intermediate clamping of two symmetrical sections projects roughly triangular clamping cylindrical surface on vertical plane, which is the combination cylinder face that hard alloy substrate and diamond composite layer account for behind.Wearability is good, anti-impact force is strong, can extend drilling life of bit.
Description
Technical field
The utility model relates to a kind of diamond compacts, belong to oil drilling technology field.
Background technique
The eighties in last century, diamond bit are widely used in oil and gas well drilling engineering.Diamond bit
Mainly it is made of bit body and cutting element, diamond bit is divided into three classes according to cutting element: PDC(polycrystalline diamond) it bores
Head, TSP(thermally stable polycrystalline diamond) drill bit and natural diamond bit.PDC drill bit be mainly used for it is soft to medium ground creep into,
By continuous technological progress, the scope of application of PDC drill bit is more and more wider, has preferable economic value.TSP drill bit is mainly used
It is crept into firmly to extremely hard formation in.Currently, oil and gas well drilling engineering middle-deep well operation gradually increases, the stratum for boring chance is also got over
Come more complicated.
When boring chance mud stone, conventional tip tooth cutting stratum efficiency is higher, achieves preferable effect.But due to underground
Layer is complicated, and it is more and more that drill bit bores the stratum met, and drill bit meets other lithology in addition to that can bore to meet mud stone also and can bore, and formation lithology is soft or hard
Staggeredly change, diamond that conventional tip tooth is contacted due to it with stratum, hard alloy abrasive resistance are inconsistent, carbide matrix
Seat abrasive resistance is not so good as diamond, causes diamond layer to lose support and in turn result in diamond layer after hard alloy abrasion and collapses
It falls.It is relatively narrow so as to cause its application range, single drill bit is not adapted to be passed through multiple layers of position and have the demand of higher rate of penetration.
Utility model content
It is a kind of resistance to the technical problem to be solved by the utility model is to provide in view of the deficiency of the prior art
Mill property is good, anti-impact force is strong, can extend the tip diamond compact of drilling life of bit.
The utility model be solve the problems, such as it is set forth above used by technical solution are as follows:
A kind of tip diamond compact, it is compound including being mutually butted the hard alloy substrate being combined into and diamond
Layer, it is characterised in that: above, hard alloy substrate forms pedestal, hard alloy substrate and gold in lower section to diamond composite layer
Two layers of ladder-like faying face that there are hard rock composite layer two horizontal planes extended in the horizontal plane and vertical direction face to be formed；It is described
Faying face makes the outer surface on the outside of faying face be stepped cylindrical body side surface；In diamond composite layer relative to carbide matrix
Body occupies on the side cylindrical side compared with many areas, the diamond composite layer outer surface opposite with faying face include at least one with
The sharp face two sides in the sharp face in the upper end that the side of cylindrical body is pointed at and the upper end and two tangent symmetrical sections of cylindrical sides,
One section of intermediate clamping of two symmetrical sections projects roughly triangular clamping cylindrical surface on vertical plane, which is behind
The combination cylinder face that hard alloy substrate and diamond composite layer account for.
According to the above technical scheme, the symmetrical centre in the sharp face in upper end passes through center line.
According to the above technical scheme, immediately below clamping cylindrical surface, setting tip tooth welds positioning surface, point on hard alloy substrate
Type tooth welding positioning surface is located in the symmetrical center line in the sharp face in upper end.
According to the above technical scheme, the most short height of the step along the vertical direction of hard alloy substrate occupies entire tip gold
The 1/3-1/2 of hard rock composite sheet height.
According to the above technical scheme, cylinder surface area where the diamond composite layer exterior surface area opposite with faying face accounts for
1/3-1/2.
According to the above technical scheme, the sharp face in the upper end is plane；Or the sharp face in upper end is symmetrical with the symmetrical centre
Two inclined-planes, two inclined-planes junction be convex ridge or recessed ridge；Or the sharp face in upper end is with the symmetrical great waves shape group of symmetrical centre
Close inclined-plane.
According to the above technical scheme, two symmetrical sections be two symmetrical slopes and cylindrical sides it is tangent made of plane；Or two
Symmetrical section be two ellipsoids and cylindrical sides it is tangent made of the symmetrical cambered surface of indent.
According to the above technical scheme, the diamond composite layer is polycrystalline diamond composite layer or thermally stable polycrystalline diamond
Composite layer.
According to the above technical scheme, the faying face between the hard alloy substrate and diamond composite layer is plane, recessed
Convex surface or grooved surface.
The utility model has the beneficial effects that: the utility model with stratum by contacting in tip diamond compact
Side increases diamond layer thickness, improves the diamond volume that tip tooth is contacted with stratum, enhances the wearability of tip tooth, in turn
Improve the service life of tip tooth.
Detailed description of the invention
Fig. 1 to Fig. 4 is perspective view, top view, the cross-sectional view, side view for the embodiment one implemented according to the utility model respectively
Figure.
Fig. 5 is the perspective view for the embodiment two implemented according to the utility model.
Fig. 6 is the perspective view for the embodiment three implemented according to the utility model.
Fig. 7 is the perspective view for the example IV implemented according to the utility model.
Fig. 8 is the perspective view for the embodiment five implemented according to the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Diamond composite layer 101 in the utility model is sintered under ultra high pressure and high temperature conditions with hard alloy substrate 102
It forms, then the end face of diamond composite layer 101 is carried out being processed into required shape.
Embodiment one:
As shown in Figures 1 to 4, diamond composite layer 101 and carbide matrix including being arranged at cylindrical combination
Body 102, wherein the outer surface of diamond composite layer 101 includes the sharp face 103 in upper end of horizontal direction, is connected with sharp face 103
And be symmetrically set on the cylinder two class gores (104 and 105), two class gores (104 and 105) it
Between clamping 106 combinatorial surface of cylindrical surface.106 occupied area of cylindrical surface of clamping between two class gores and (104 and 105)
It is the 1/3 of 101 column part of diamond composite layer.Remaining base part is hard alloy pedestal 102.Hard alloy pedestal 102
Upper setting tip tooth welds positioning surface 107, and tip tooth welding positioning surface 107 is located at the sharp 103 symmetrical center in triangle both sides of face
Lower section, about 106 cylindrical surface of the clamping between two class gores and (104 and 105) are in line corresponding.The present embodiment gold
Half circular diameter of hard rock is 15.875mm, and triangle both sides angle α is about 90 degree, and sharp hem width L is 3mm.Diamond composite layer
The most thick position H of 101 thickness is the height on cylindrical surface 106 in 8mm(, that is, Fig. 1).It is from the nearest face gold in 102 bottom surface of hard alloy substrate
1/3(, that is, hard alloy the pedestal 102 and the most short height where 106 contact surface of cylindrical surface that hard rock width is cylinder).The gold
101 edge of hard rock composite layer (sharp face 103 and two class gores (104 and 105), 106 junction of cylindrical surface) setting is fallen
Angle, chamfering are ramp down angle.
Embodiment two is as shown in Figure 5.It and embodiment one the difference is that: the tip on diamond composite layer 101
The sharp face 203 in the upper end of tooth is made of concaved circular cambered surface in two sides (204 and 205) cutoff level face；Concaved circular cambered surface in two sides
Clamping cylindrical surface 206 between (204 and 205) constitutes the outer surface of diamond composite layer 101 with the sharp face 203 in upper end together.Its
Its structure is the same as example 1.
Embodiment three as shown in fig. 6, it and embodiment two the difference is that: the sharp face in the upper end of diamond composite layer
It is to be made of 305, two adjacent bevel surfaces 303 of a convex ridge, 304 face groups.Remaining is identical as embodiment two.
Example IV as shown in fig. 7, it and embodiment two the difference is that: the upper end point of diamond composite layer 101
Sharp face is made of two convex ridges (404 and 407), two groove inclined-planes (405 and 406), two adjacent bevel surfaces (403 and 408).
Remaining is identical as embodiment two.
Embodiment five as shown in figure 8, it and embodiment two the difference is that: the upper end point of diamond composite layer 101
Sharp face is made of 505, two adjacent bevel surfaces (503,504) of horizontal ridge surface, and two to be connected with the sharp face in upper end symmetrically cut
Face is the oval section with cylindrical surface, the cylindrical surface among clamping.Remaining is identical as embodiment two.
Claims (9)
1. a kind of tip diamond compact, including being mutually butted the hard alloy substrate and diamond composite layer that are combined into,
It is characterized by: diamond composite layer is above, hard alloy substrate forms pedestal, hard alloy substrate and diamond in lower section
Two layers of ladder-like faying face that there are composite layer two horizontal planes extended in the horizontal plane and vertical direction face to be formed；The combination
Face makes the outer surface on the outside of faying face be stepped cylindrical body side surface；It is accounted in diamond composite layer relative to hard alloy substrate
According on the side cylindrical side compared with many areas, the diamond composite layer outer surface opposite with faying face includes at least one and cylinder
The sharp face two sides in the sharp face in the upper end that the side of body is pointed at and the upper end and two tangent symmetrical sections of cylindrical sides, two pairs
One section of intermediate clamping of section is claimed to project roughly triangular clamping cylindrical surface on vertical plane, which is hard behind
The combination cylinder face that alloy substrate and diamond composite layer account for.
2. tip diamond compact according to claim 1, it is characterised in that: the symmetrical centre in the sharp face in upper end is passed through
Center line.
3. tip diamond compact according to claim 1, it is characterised in that: immediately below clamping cylindrical surface, hard is closed
Tip tooth is set on auri body and welds positioning surface, tip tooth welding positioning surface is located in the symmetrical center line in the sharp face in upper end.
4. tip diamond compact according to claim 1, it is characterised in that: hard alloy substrate is along the vertical direction
The most short height of step occupy the 1/3-1/2 of entire tip diamond compact height.
5. tip diamond compact according to claim 1, it is characterised in that: diamond composite layer is opposite with faying face
Exterior surface area account for where cylinder surface area 1/3-1/2.
6. tip diamond compact according to claim 1, it is characterised in that: two symmetrical sections be two symmetrical slopes with
Plane made of cylindrical sides are tangent；Or two symmetrical section be that indent made of two ellipsoids and cylindrical sides are tangent is symmetrical
Cambered surface.
7. tip diamond compact according to claim 1, it is characterised in that: the diamond composite layer is plycrystalline diamond
Diamond composite layer or thermally stable polycrystalline diamond composite layer.
8. tip diamond compact according to claim 1, it is characterised in that: the hard alloy substrate and Buddha's warrior attendant
Faying face between stone composite layer is plane, male and fomale(M&F) or grooved surface.
9. tip diamond compact according to claim 2, it is characterised in that: the sharp face in upper end is plane；Or
The sharp face in upper end is with symmetrical two inclined-planes of the symmetrical centre, and two inclined-planes junction is convex ridge or recessed ridge；Or upper end point
Sharp face is to combine inclined-plane with the symmetrical great waves shape of symmetrical centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121412.7U CN209687419U (en) | 2018-12-18 | 2018-12-18 | A kind of tip diamond compact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121412.7U CN209687419U (en) | 2018-12-18 | 2018-12-18 | A kind of tip diamond compact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209687419U true CN209687419U (en) | 2019-11-26 |
Family
ID=68596117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822121412.7U Active CN209687419U (en) | 2018-12-18 | 2018-12-18 | A kind of tip diamond compact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209687419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023165592A1 (en) * | 2022-03-03 | 2023-09-07 | 中石化江钻石油机械有限公司 | Multi-cutting-edge diamond compact and earth drilling tool |
-
2018
- 2018-12-18 CN CN201822121412.7U patent/CN209687419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023165592A1 (en) * | 2022-03-03 | 2023-09-07 | 中石化江钻石油机械有限公司 | Multi-cutting-edge diamond compact and earth drilling tool |
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