CN205477375U - Point type polycrystalline diamond composite tooth - Google Patents
Point type polycrystalline diamond composite tooth Download PDFInfo
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- CN205477375U CN205477375U CN201521079936.4U CN201521079936U CN205477375U CN 205477375 U CN205477375 U CN 205477375U CN 201521079936 U CN201521079936 U CN 201521079936U CN 205477375 U CN205477375 U CN 205477375U
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- polycrystalline diamond
- diamond composite
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- tip
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Abstract
The utility model provides a point type polycrystalline diamond composite tooth, be in with the setting including cemented carbide substrate the last polycrystalline diamond head of cemented carbide substrate, the polycrystalline diamond head includes that glomerocryst buddha's warrior attendant layer is domatic, the domatic top in glomerocryst buddha's warrior attendant layer is collectd for sharp type head. The beneficial effects of the utility model are that: through setting up sharp type head, can enough guarantee point type polycrystalline diamond composite tooth's shock resistance, make the crucial position of the broken rock of point type polycrystalline diamond composite tooth more sharp -pointed again to can guarantee the efficiency of its broken rock, have shock resistance height, the broken efficient characteristics of rock.
Description
Technical field
This utility model relates to diamond composite teeth, particularly relates to a kind of tip polycrystal diamond composite teeth.
Background technology
Diamond composite teeth is to be added by diamond dust after certain bonding agent and hard alloy substrate fit together, and on special diamond hydraulic press, under the conditions of high pressure high temperature, sintering prepares.It is made up of one layer of polycrystalline diamond layer and hard alloy substrate.Owing to polycrystalline diamond layer hardness is high, wearability is good, add excellent toughness and the solderability of hard alloy substrate so that it is be used widely in oil drilling, geological drilling and coal mining are applied.
Along with the continuous renewal of drilling technology, break in rock field more and more harsher to the requirement of diamond-hard alloy composite teeth in oil drilling, mine development, engineering.Especially in oil drilling field, in the middle of the oil field that the mankind have verified, it is easy to the oil field of drilling has been bored to the greatest extent.And the oil field that the oil field exploited now maybe will be exploited, creep into difficulty processing, subsurface environment and rock and soil constitution complicated.Traditional plane polycrystal diamond composite teeth all can also play its irreplaceable advantage in most oil field, but the drill bit of single Planar Compound toothing the most progressively can not meet drilling well requirement.In order to adapt to these changes in demand, people devise conisphere type polycrystal diamond composite teeth, ball-type polycrystal diamond composite teeth in succession.The appearance of these composite teeth, supplementing as plane composite polycrystal-diamond, compensate for the deficiency of some Planar Compound teeth.Such as these ball-type composite teeth, as the backrest tooth of drill bit, compensate for the defect that plane teeth shock resistance is not enough, improve the life-span of drill bit.
But these conisphere types are more blunt, although improve bit life, but also reduce the efficiency of drilling well, creep into speed slow simultaneously.And as the carrying person of down-hole impact, its shock resistance is the most not enough.In prior art, fail to solve a contradictory problems, can also be that polycrystal diamond composite teeth has higher efficiency of breaking rock in the case of i.e. ensureing shock resistance.The efficiency of breaking rock of polycrystal diamond composite teeth and shock resistance always are the paradox that can not get both the most under the prior art.
Summary of the invention
In order to solve the problems of the prior art, this utility model provides a kind of tip polycrystal diamond composite teeth.
This utility model provides a kind of tip polycrystal diamond composite teeth, including hard alloy substrate and the polycrystalline diamond head being arranged on described hard alloy substrate, described polycrystalline diamond head includes that glomerocryst Buddha's warrior attendant layer is domatic, and the domatic top of described glomerocryst Buddha's warrior attendant layer is collected for tip head.
As further improvement of the utility model, the top of described tip head is provided with arc transition portion, and the arc radius in described arc transition portion is between 0 to 4 millimeter.
As further improvement of the utility model, described glomerocryst Buddha's warrior attendant layer is domatic is provided with arcuate configuration.
As further improvement of the utility model, described arcuate configuration is crossed to form by least two plane.
As further improvement of the utility model, described arcuate configuration is formed by curved surface.
As further improvement of the utility model, the top of described tip head is provided with round platform transition part.
As further improvement of the utility model, the radius of described round platform transition part is less than 4 millimeters.
As further improvement of the utility model, the top of described tip head is provided with wedge angle transition part.
As further improvement of the utility model, described wedge angle transition part is formed by least two conical surface or surface intersection.
The beneficial effects of the utility model are: pass through such scheme, by arranging tip head, the shock resistance of tip polycrystal diamond composite teeth can either be ensured, tip polycrystal diamond composite teeth is made again to break rock key position more sharp-pointed, it is thus possible to ensure the efficiency of its broken rock, have the advantages that shock resistance is high, efficiency of breaking rock is high.
Accompanying drawing explanation
Fig. 1 is the structural representation in the tip head employing arc transition portion of this utility model a kind of tip polycrystal diamond composite teeth.
Fig. 2 is the structural representation of the tip head employing wedge angle transition part of this utility model a kind of tip polycrystal diamond composite teeth.
Fig. 3 is the structural representation of the tip head employing wedge angle transition part of this utility model a kind of tip polycrystal diamond composite teeth.
Fig. 4 is the structural representation of the tip head employing round platform transition part of this utility model a kind of tip polycrystal diamond composite teeth.
Fig. 5 is the structural representation that the glomerocryst Buddha's warrior attendant layer of this utility model a kind of tip polycrystal diamond composite teeth is domatic.
Fig. 6 is the structural representation of the domatic arcuate configuration of the glomerocryst Buddha's warrior attendant layer of this utility model a kind of tip polycrystal diamond composite teeth.
Fig. 7 is the structural representation of the domatic arcuate configuration of the glomerocryst Buddha's warrior attendant layer of this utility model a kind of tip polycrystal diamond composite teeth.
Detailed description of the invention
This utility model is further illustrated by explanation and detailed description of the invention below in conjunction with the accompanying drawings.
Drawing reference numeral in Fig. 1 to Fig. 7 is: hard alloy substrate 1；Tip polycrystal diamond composite teeth 2；Polycrystalline diamond head 3；Glomerocryst Buddha's warrior attendant layer domatic 4；Domatic top and the connecting line 5 of face toe.
As shown in Figure 1, a kind of tip polycrystal diamond composite teeth 2, including hard alloy substrate 1 and the polycrystalline diamond head 3 being arranged on described hard alloy substrate 1, described polycrystalline diamond head 3 includes that glomerocryst Buddha's warrior attendant layer domatic 4, the top of described glomerocryst Buddha's warrior attendant layer domatic 4 collect for tip head.
As it is shown in figure 1, the top of described tip head is provided with arc transition portion 6, the arc radius in described arc transition portion 6 is between 0 to 4 millimeter.So-called 0 millimeter, it is simply that the top of tip head does not has arc transition, is directly the conical surface or surface intersection.So, keep less contact area when the working position of tip polycrystal diamond composite teeth 2 is with rock contact, effectively improve efficiency of breaking rock.
As shown in Figure 1.The radius R in arc transition portion 6 can be more than 0 millimeter, less than 4 millimeters.Such structure circular arc is smaller, can keep less contact area, strengthen the destruction to rock of the pointed tooth, improve its efficiency of breaking rock when with rock effect.Arc transition can reduce the percent defective falling limit when pointed tooth makes simultaneously, but also can guarantee that its shock resistance.
As shown in Figures 5 to 7, described glomerocryst Buddha's warrior attendant layer domatic 4 is provided with arcuate configuration.What is called arches upward, and can be by being crossed to form more than more than 2 sections face directly, it is also possible to formed with curved surface.The structure arched upward, for amechanical angle, more effectively props up support so that be not readily susceptible to destroy.
As shown in Figure 6, described arcuate configuration is crossed to form by least two plane.
As it is shown in fig. 7, described arcuate configuration is formed by curved surface.
As shown in Figures 5 to 7, described glomerocryst Buddha's warrior attendant layer domatic 4 uses arcuate configuration.That is, glomerocryst Buddha's warrior attendant layer domatic 4 is raised structures relative to the connecting line 5 at domatic top Yu face toe.The mode arched upward, in terms of front projection, two sections and above multi-section-line can be used to be connected, can also curve (including circular arc), as shown in Figure 6.
The structure why employing is arched upward.This is because tip polycrystal diamond composite teeth 2 when broken rock except the percussion by front, also by stronger shearing impact effect.The structure arched upward can strengthen supporting role, so can ensure that in the case of top is relatively sharp-pointed, still can guarantee that and higher resists damage capability.
Furthermore, except the above-mentioned design to tip polycrystal diamond composite teeth 2 structure, the hard alloy substrate 1 of pointed tooth can use any structure.
As shown in Figure 4, the top of described tip head is provided with round platform transition part 8.
As shown in Figure 4.Round platform transition part 8 is less than the round platform of 4mm for radius.Such structure can keep top acuity, can keep less contact area, increase the destruction to rock of the pointed tooth, improve its efficiency of breaking rock when with rock effect.Chain-wales can strengthen shock proof ability simultaneously.
As shown in Figure 2 to Figure 3, the top of described tip head is provided with wedge angle transition part 7.
As shown in Figure 2 to Figure 3, described wedge angle transition part 7 is formed by least two conical surface or surface intersection.
As shown in Figure 2 to Figure 3, it is directly that curved surface, the conical surface or many sections are crossed to form sharp-pointed summit.The top forming this structure is very sharp-pointed, and efficiency of breaking rock is the best.
Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (1)
1. a tip polycrystal diamond composite teeth, it is characterized in that: include hard alloy substrate and the polycrystalline diamond head being arranged on described hard alloy substrate, described polycrystalline diamond head includes that glomerocryst Buddha's warrior attendant layer is domatic, the domatic top of described glomerocryst Buddha's warrior attendant layer is collected for tip head, the top of described tip head is provided with round platform transition part, the radius of described round platform transition part is less than 4 millimeters, and the described domatic arcuate configuration that is provided with of glomerocryst Buddha's warrior attendant layer, described arcuate configuration is formed by curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521079936.4U CN205477375U (en) | 2015-12-22 | 2015-12-22 | Point type polycrystalline diamond composite tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521079936.4U CN205477375U (en) | 2015-12-22 | 2015-12-22 | Point type polycrystalline diamond composite tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205477375U true CN205477375U (en) | 2016-08-17 |
Family
ID=56660474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521079936.4U Active CN205477375U (en) | 2015-12-22 | 2015-12-22 | Point type polycrystalline diamond composite tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205477375U (en) |
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2015
- 2015-12-22 CN CN201521079936.4U patent/CN205477375U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |