CN201598984U - Pile-buried diamond bit for drilling hard and ultrahard rock stratum - Google Patents
Pile-buried diamond bit for drilling hard and ultrahard rock stratum Download PDFInfo
- Publication number
- CN201598984U CN201598984U CN2009202658513U CN200920265851U CN201598984U CN 201598984 U CN201598984 U CN 201598984U CN 2009202658513 U CN2009202658513 U CN 2009202658513U CN 200920265851 U CN200920265851 U CN 200920265851U CN 201598984 U CN201598984 U CN 201598984U
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- diamond
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- drill bit
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Abstract
The utility model relates to a diamond bit, in particular to a pile-buried diamond bit for drilling hard and ultrahard rock stratum. The appearance of the diamond bit is completely different from that of a standard drill bit. The diamond bit is characterized in that pluralities of buried piles are distributed on a diamond matrix of the bit, and the buried piles are made of metal or nonmetal materials which are easy to be worn and can resist high temperature. During drilling, the buried piles are worn first and then form a large quantity of concave pits at a lip, contact area of the bit and the rock surface is reduced, and the pits remain a large quantity of rock debris and high-abrasiveness materials such as diamond fragments and the like shedding after being worn, thereby quickening wear of the lip and improving diamond exposure. The diamond bit is favorable for resolving problems that the diamond bit slips and fails to advance during drilling hard and ultrahard rock stratum, has small influence on strength of cutting lips by aid of the structure, is reliable in operation, and is not easy to cause drill bit breakage and separation.
Description
[technical field]
The utility model relates to a kind of diamond bit, relates in particular to a kind of diamond bit hard and utmost point competent bed that is used to creep into.
[background technology]
The probing of hard and utmost point competent bed, be that the lithology index is more than the penetration hardness 4500Mpa, uniaxial compressive strength is greater than 1500Mpa, and abrasiveness is lower than the rock stratum of 5Kg (measuring with steel pole wearing and tearing method), as the probing of quartzite, hard granite, flint fire rock etc., be the difficult problem of probing industry always.
Impregnated diamond is when this rocks of fragmentation, and itself weares and teares also very serious.Diamond point blade divides is worn into facet very soon in drilling process by rock, thereby has increased the contact area with rock greatly, has reduced compressive load per unit area, and the diamond rock breaking capacity is reduced greatly.In addition because the rock dust that the probing of this rocks produces is few and thin, the bit matrix that can't in time wear and tear, make blunt diamond can not in time come off.When compressive load per unit area is reduced to compressive strength less than rock, just make to produce skidding by the drill bit ground fractured rock that can not remain valid.
Act on adamantine specific pressure in order to increase, promote the new sharp blade of diamond to divide exposure and quilt to carve and press rock, the way that adopts is at present: one, the metallurgy way, promptly adopt soft carcass or diamond weak-wrapped, make the faceted diamond that weares and teares come off in advance (Zhang Shao and etc. " research of timeliness long-life weak-wrapped drill bit " P62, NO.2 Vol29April2001 coal field geology and exploration).Two, Mechanical Method promptly changes lip shape-designing at the bottom of the drill bit working lining, makes lip drill bit of the special-shaped end to reduce the contact area of drill bit and rock stratum, and increase acts on adamantine specific pressure.At present, the special-shaped drill bit that uses has (1) height sawtooth pattern drill bit, (2) monolateral male-type drill bit, (3) concave-convex type drill bit, (4) staggered pointed tooth type drill bit, (5) sharp annular groove type drill bit (Liu Guangzhi " China skid layer drilling technology entered the international rank of advanced units " P53-54 NO.10 Vol25 Oct 1989 geology and exploration).
Above method cuts both ways, and the soft matrix drill bits intensity that metallurgical method is made is lower, in the middle easy deformation of creeping into of high-voltage high-speed.The weak-wrapped bit life is short.And special-shaped lip subdrilling head no doubt contact surface is little, but exist drill bit intensity low, perhaps the little root of head is big, contact area is increasing with the consumption of drill bit lip, drilling speed is more and more slower, so that can't creep at last.
[summary of the invention]
At the problems referred to above, the purpose of this utility model provides when the creeping into of hard and utmost point competent bed that a kind of difficult generation is skidded, drilling depth phenomenon not, also is not easy to produce the cutter head fracture and comes off the pile anchoring formula diamond bit of reliable operation.
For achieving the above object, technical solution adopted in the utility model is as follows:
A kind of pile anchoring formula diamond bit that is used to creep into hard and utmost point competent bed, comprise bizet and steel body, two parts are sintered into one, and the steel body is a tubular structure, and the one end has screw thread, can be connected with drilling rod by core barrel, at the bottom of bizet comprises the drill bit lip, carcass working lining and have the inoperative layer of protecting the footpath piece, steel body and bizet joint portion have the mouth of a river, are distributed with some pile anchorings in the diamond carcass working lining, these pile anchorings are polyhedrons such as cylinder, regular hexahedron, and height is identical with the carcass working lining.
Described pile anchoring is evenly distributed in the diamond carcass.
Described pile anchoring is made by easy abrasion, resistant to elevated temperatures metal or nonmetals.
Described pile anchoring is made by graphite rod or copper rod or low-carbon (LC) rod iron.
Aforesaid pile anchoring formula drill bit can adopt two kinds of method manufacturings.Low-density pile anchoring formula drill bit can be after the carcass powder adds graphite mo(u)ld, but not before the compacting, the pile anchoring material is evenly inserted.With carcass powder compacting location, be pressed into the steel body then and carry out hot pressed sintering.High density pile anchoring formula drill bit then needs to rule by designing requirement in the lip position of graphite mo(u)ld in advance, bores locating hole, and the locating hole pore size is identical with the diameter of pile anchoring material; Dark stake is inserted in the hole again, fill out powder then, compacting is carried out hot pressing to fire again behind the steel body of packing into, does not overlap mutually to keep pile anchoring.The drill bit blank of sinter molding through thread turning processing, mill operation such as the mouth of a river and promptly make pile anchoring formula drill bit.
A kind of pile anchoring formula diamond bit that is used to creep into hard and utmost point competent bed of the utility model, a lot of easy abrasion pile anchorings contour with it have evenly distributed in the diamond carcass working lining of this drill bit.Pile anchoring preferential wear in the drilling process and form a large amount of pits at lip has reduced and the scar contact area.And pit has been held back the contour abrasive materials of diamond particle that come off after a large amount of rock chips and the wearing and tearing, has quickened the abrasion of lip, thereby promotes the adamantine sword that goes out.Make drill bit all keep constant high speed in the drilling process, overcome diamond bit and drilled through the hard utmost point competent bed not problem of drilling depth of skidding.
[description of drawings]
Fig. 1 is the utility model structural representation reference diagram.
Among the figure, 1 for bizet, 2 for the steel body, 3 at the bottom of the drill bit lip, 4 be pile anchoring for having the inoperative layer of protecting the footpath piece, 6 for the mouth of a river, 7 for carcass working lining, 5.
[specific embodiment]
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of pile anchoring formula diamond bit that is used to creep into hard and utmost point competent bed, be included as drill bit 1 and steel body 2, steel body 2 is a tubular structure, the one end has screw thread, can be connected with drilling rod by core barrel, and its other end is connected with drill bit 1, the drill bit mouth of a river 6 is carved with in steel body 2 and bizet 1 joint portion, and bizet 1 comprises having protects directly the inoperative layer 5 and the diamond carcass working lining 4 of piece; The interior external diameter of inoperative layer 5 is inlaid with the bit gauge protection piece, and the bottom of diamond carcass working lining 4 is at the bottom of the drill bit lip 3, is evenly distributed with some pile anchorings 7 that are made by graphite rod in carcass working lining 4, and these pile anchorings 7 are cylinder and contour with carcass.This pile anchoring formula drill bit during fabrication, add graphite mo(u)ld and not before the compacting at the carcass powder, the pile anchoring material is evenly inserted behind the carcass powder compacting location again, be pressed into the steel body then and carry out hot pressed sintering, the drill bit blank of sinter molding through thread turning processing, mill operation such as the mouth of a river and promptly make pile anchoring formula drill bit finished product.
A kind of pile anchoring formula diamond bit that is used to creep into hard and utmost point competent bed of the utility model, the profile of this drill bit and the drill bit of standard are just the same, and difference is to be uniform-distribution with a lot of pile anchorings in the diamond carcass working lining of drill bit.These pile anchoring materials are to be made by easy abrasion, resistant to elevated temperatures metal or nonmetals, as graphite rod, copper, mild steel etc.This pile anchoring formula diamond bit is the same with the using method of other synthetic diamond core bit, drill steel body tail end thread is connected with drilling rod through core barrel, exert pressure by rig driving and hydraulic way, rotation also moves downward gradually at a high speed under the situation that drill bit is cooled off by water circulation, thereby reaches the purpose of creeping into continuously.Conventional bit is creeping into hard and during special competent bed, because drill bit and rock stratum contact surface are big, pressure is little, does not reach rock breaking efficiency.Simultaneously, the particle that produced of probing constantly is recycled water again and washes away, and is helpless to the adamantine sword that goes out, and produces not drilling depth phenomenon of drill bit, is difficult to drill through this class rock stratum.And pile anchoring formula diamond bit described in the utility model is in drilling process, since pile anchoring have easy abrasion characteristic and by preferential wear, form pit well-regulated in a large number, each self-separation at lip, drill bit and scar contact area are significantly reduced, adamantine specific pressure is improved greatly, help promoting adamantine exposure.Again because these pits are continuously, little by little to form, and run through the overall process of probing in drilling process, thus this structure can make drill bit in whole drilling process and scar keep less contact area all the time, make drilling speed keep constant high speed.In addition, because a large amount of concavity holes that distribute of labial surface, held back a large amount of rock chips and the diamond particle that comes off etc. and quickened the abrasion of lip, made diamond be easy to out sword, helped overcoming diamond bit and drill through the hard special competent bed not problem of drilling depth of skidding.And this structure is little to the intensity effect of bit cutting lip, and reliable operation is not easy the phenomenon that produces the drill bit fracture and come off.
Claims (4)
1. pile anchoring formula diamond bit that is used to creep into hard and utmost point competent bed, comprise bizet (1) and steel body (2), two parts are sintered into one, steel body (2) is a tubular structure, the one end has screw thread, can be connected with drilling rod by core barrel, bizet (1) comprises (3) at the bottom of the drill bit lip, carcass working lining (4) and have the inoperative layer (5) of protecting the footpath piece, steel body (2) and bizet (1) joint portion have the mouth of a river (6), be distributed with some pile anchorings (7) in the diamond carcass working lining (4), these pile anchorings are cylinder, polyhedrons such as regular hexahedron, height is identical with the carcass working lining.
2. the pile anchoring formula diamond bit that is used to creep into hard and utmost point competent bed as claimed in claim 1 is characterized in that described pile anchoring (7) is evenly distributed in diamond carcass working lining (4).
3. be used to creep into the pile anchoring formula diamond bit of hard and utmost point competent bed as claimed in claim 1 or 2, it is characterized in that described pile anchoring (7) made by easy abrasion, resistant to elevated temperatures metal or nonmetals.
4. the pile anchoring formula diamond bit that is used to creep into hard and utmost point competent bed as claimed in claim 3 is characterized in that described pile anchoring (7) made by graphite rod or copper or mild steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202658513U CN201598984U (en) | 2009-12-28 | 2009-12-28 | Pile-buried diamond bit for drilling hard and ultrahard rock stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202658513U CN201598984U (en) | 2009-12-28 | 2009-12-28 | Pile-buried diamond bit for drilling hard and ultrahard rock stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201598984U true CN201598984U (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202658513U Expired - Fee Related CN201598984U (en) | 2009-12-28 | 2009-12-28 | Pile-buried diamond bit for drilling hard and ultrahard rock stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201598984U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867133A (en) * | 2014-03-27 | 2014-06-18 | 中钢集团洛阳耐火材料研究院有限公司 | Self-sharpening artificial-diamond-impregnated bit with continuous crushing capacity |
| CN105201412A (en) * | 2015-10-19 | 2015-12-30 | 无锡市永亿精密铸造有限公司 | Diamond drill bit containing high-manganese steel cone |
| CN108915600A (en) * | 2018-08-23 | 2018-11-30 | 兰桥昌 | A kind of intersection tooth diamond bit and its manufacturing method |
| CN112065283A (en) * | 2020-08-13 | 2020-12-11 | 祁东县锋速钻探工具有限公司 | Diamond bit for large-caliber drilling construction |
-
2009
- 2009-12-28 CN CN2009202658513U patent/CN201598984U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867133A (en) * | 2014-03-27 | 2014-06-18 | 中钢集团洛阳耐火材料研究院有限公司 | Self-sharpening artificial-diamond-impregnated bit with continuous crushing capacity |
| CN105201412A (en) * | 2015-10-19 | 2015-12-30 | 无锡市永亿精密铸造有限公司 | Diamond drill bit containing high-manganese steel cone |
| CN108915600A (en) * | 2018-08-23 | 2018-11-30 | 兰桥昌 | A kind of intersection tooth diamond bit and its manufacturing method |
| CN108915600B (en) * | 2018-08-23 | 2024-01-12 | 福清市福钻地质装备有限公司 | Cross-tooth diamond drill bit and manufacturing method thereof |
| CN112065283A (en) * | 2020-08-13 | 2020-12-11 | 祁东县锋速钻探工具有限公司 | Diamond bit for large-caliber drilling construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20121228 |