CN203145840U - Impregnated polycrystalline diamond drill bit - Google Patents
Impregnated polycrystalline diamond drill bit Download PDFInfo
- Publication number
- CN203145840U CN203145840U CN 201320109451 CN201320109451U CN203145840U CN 203145840 U CN203145840 U CN 203145840U CN 201320109451 CN201320109451 CN 201320109451 CN 201320109451 U CN201320109451 U CN 201320109451U CN 203145840 U CN203145840 U CN 203145840U
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- drill bit
- impregnated
- broken
- bit
- glomerocryst
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Abstract
The utility model discloses a broken polycrystalline diamond-impregnated drill bit, wherein a first working layer of the drill bit is of a surface-embedded structure, a main body grinding material of the surface-embedded structure is of an irregular broken polycrystalline, and the rest working layers of the drill bit are of an embedded structure and are impregnated with broken polycrystalline; the working layer matrix of the drill bit is also compounded with single crystal diamond. The utility model relates to a can self-grind out the sword in well hard and elastoplasticity stratum, have cutting and grinding dual-purpose high efficiency, long-life, extensive applicability's combined type hot crushing polycrystalline diamond-impregnated bit, can increase substantially the probing efficiency, practice thrift the probing cost.
Description
Technical field:
The utility model relates to a kind of impregnated broken polycrystalline diamond compact bit, particularly a kind of in the impregnated broken polycrystalline diamond compact bit of combined type hot pressing of drilling efficiency height, long service life in the hard and elastoplastic rock.
Background technology:
China's development synthetic diamond core bit is existing nearly 60 years history so far.The present used conventional diamond bit of geological core drilling, it is lower that diamond goes out sword, and the mode of fractured rock is mainly based on grinding, and fractured rock efficient is lower; Drill bit timeliness and life-span often can not be taken into account; Drill bit needs to select dissimilar diamond bits according to different rocks to the bad adaptability of rock; The hand-hole domestic demand wants preliminary grinding normally to creep under the green bit; The drill produced manufacturing cost is higher.Because the kind of rock stratum is diversified, lithology is complicated and changeable, and existing diamond bit is difficult to satisfy simultaneously long, requirement such as drilling efficiency is high, broad spectrum activity good, cost is low of life-span.
Summary of the invention:
For overcoming the defective of prior art, the purpose of this utility model be to provide a kind of in can grind sword certainly in the hard and elastoplasticity stratum, have cutting and grinding double action efficiently, long-life, the broken glomerocryst diamond-impregnated bit of combined type hot pressing that applicability is wide, to increase substantially drilling efficiency, save drilling cost.
The utility model technical solution problem adopts following technical scheme:
A kind of impregnated broken polycrystalline diamond compact bit, first working lining of described drill bit is table edge structure, and the main body abrasive material of described table edge structure is irregular broken glomerocryst, and all the other working linings of drill bit are impregnated structure, impregnated irregular broken glomerocryst are arranged; In drill bit working lining carcass, also be compounded with single-crystal diamond.
The volumetric concentration of irregular broken glomerocryst in the working lining carcass is 16% ~ 20%.
First working lining of described drill bit adopts table edge structure, and the broken glomerocryst of table edge is to arrange in order in the working lining carcass; All the other working linings of drill bit are impregnated structure, and impregnated broken glomerocryst is lack of alignment in the working lining carcass.
Compound single-crystal diamond in the working lining carcass of described drill bit, the percent concentration of single-crystal diamond is 20% ~ 22%; Granularity is that 30/40 purpose accounts for 60% in the single-crystal diamond; Granularity is that 40/50 purpose accounts for 40%.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
The utility model adopts broken glomerocryst as the main body abrasive material of fractured rock, has sharp-pointed free cutting face, and it goes out the sword height, has grinding and cutting double action, in will inevitably obtain high drilling efficiency in the hard and elastoplasticity rock stratum; First working lining of drill bit adopts table edge mode, does not need time consuming just directly to creep under the drill bit at the bottom of the hand-hole; Owing to contain the impregnated working lining of the broken glomerocryst of multilayer lack of alignment, the working lining of drill bit can not only can obtain long application life well from grinding sword in the drilling process up to 10 ~ 12mm; Impregnated percent concentration is 20% ~ 22% single-crystal diamond in the drill bit, not only can participate in fractured rock, the more important thing is the balance wearing and tearing that can keep the drill bit working lining, improves the result of use of drill bit.Can well go out sword owing to the utility model drill bit in drilling process simultaneously, and it is higher to go out sword, drill bit row powder is effective, can avoid the generation of repetition fragmentation and bit balling phenomenon.The utility model drill bit cost is lower, compares with the conventional hot-press diamond bit, and its cost performance improves about 20%.
Description of drawings:
Fig. 1 is the utility model bit bottom lip surface partial structurtes schematic diagrames.
Fig. 2 is A-A direction partial schematic sectional view among Fig. 1.
In the above accompanying drawing, the corresponding relation of each label and component is:
1-drill steel body; The 2-bit matrix; The impregnated broken glomerocryst of 3-; The broken glomerocryst of 4-table edge; The 5-single-crystal diamond; The 6-bit gauge protection; The 7-drill bit mouth of a river.
Below pass through the specific embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
The specific embodiment:
Embodiment: in conjunction with Fig. 1-2, the disclosed structure of accompanying drawing is exactly the structure of an embodiment of the utility model.
The impregnated broken polycrystalline diamond compact bit of present embodiment, first working lining of drill bit is table edge structure, and the main body abrasive material of table edge structure is irregular broken glomerocryst, and all the other working linings of drill bit are impregnated structure, impregnated irregular broken glomerocryst are arranged.
Fig. 2 as can be seen, in the bit matrix 2, in first working lining in order permutation table inlay broken glomerocryst 4, lack of alignment has impregnated broken glomerocryst 3 in all the other working linings, also is compounded with single-crystal diamond 5 in drill bit working lining carcass.The periphery of drill bit working lining is bit gauge protection, and the rear end is drill steel body 1, and the drill bit mouth of a river 7 is bigger, and drill bit row powder is effective, can avoid the generation of repetition fragmentation and bit balling phenomenon.
When making the utility model drill bit, at first will show the broken glomerocryst 4 of edge according to the arranged distribution scheme that designs, be fixed on the surface, foundation ring of drill bit mould, and arrange the table of first working lining in order and inlay broken glomerocryst 4, sprinkle the pure carcass powder of first working lining simultaneously, finish the stocking process of the broken glomerocryst of table edge.
Then, mix calculating good carcass powder, single-crystal diamond 5 and the broken glomerocryst 4 of table edge, on first working lining of the drill bit of packing into, preliminary compacting; Adamantine percent concentration adopts 20%, and the volumetric concentration of broken glomerocryst adopts 18%.
On the basis of above-mentioned dress mould, insert the bit gauge protection glomerocryst, reinstall pure carcass powder, press the drill steel body, namely finish the assembling of drill-bit sintering mould.
The mould that assembles sent into carry out hot pressed sintering in the middle frequency furnace, hot pressing parameters is: 960 ℃ of sintering temperatures, and pressure 18MPa, temperature retention time 4min can come out of the stove when furnace temperature is cooled to 820 ℃, namely finishes the manufacturing of this practicality drill bit.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.If of the present utility model these are revised and modification belongs to basic design of the present utility model or equivalent technologies, then the utility model also should comprise these changes and modification interior.
Claims (2)
1. an impregnated broken polycrystalline diamond compact bit is characterized in that, first working lining of described drill bit is table edge structure, and the main body abrasive material of described table edge structure is irregular broken glomerocryst, and all the other working linings of drill bit are impregnated structure, impregnated broken glomerocryst are arranged; In drill bit working lining carcass, also be compounded with single-crystal diamond.
2. a kind of impregnated broken polycrystalline diamond compact bit according to claim 1 is characterized in that, first working lining of described drill bit adopts table edge structure, and the broken glomerocryst of table edge is to arrange in order in the working lining carcass; All the other working linings of drill bit are impregnated structure, and impregnated broken glomerocryst is lack of alignment in the working lining carcass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320109451 CN203145840U (en) | 2013-03-11 | 2013-03-11 | Impregnated polycrystalline diamond drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320109451 CN203145840U (en) | 2013-03-11 | 2013-03-11 | Impregnated polycrystalline diamond drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203145840U true CN203145840U (en) | 2013-08-21 |
Family
ID=48973376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320109451 Expired - Lifetime CN203145840U (en) | 2013-03-11 | 2013-03-11 | Impregnated polycrystalline diamond drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203145840U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867132A (en) * | 2014-03-27 | 2014-06-18 | 中钢集团洛阳耐火材料研究院有限公司 | Diamond-impregnated geological prospecting coring bit with plowing and breaking functions |
| CN104453722A (en) * | 2014-12-02 | 2015-03-25 | 辽宁工业大学 | Method of ordered-arrangement brazing impregnated diamond bit |
-
2013
- 2013-03-11 CN CN 201320109451 patent/CN203145840U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867132A (en) * | 2014-03-27 | 2014-06-18 | 中钢集团洛阳耐火材料研究院有限公司 | Diamond-impregnated geological prospecting coring bit with plowing and breaking functions |
| CN104453722A (en) * | 2014-12-02 | 2015-03-25 | 辽宁工业大学 | Method of ordered-arrangement brazing impregnated diamond bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |