CN103806844B - The Ni-based diamond-impregnated bit of deep hard-rock boring soldering and manufacture method thereof - Google Patents
The Ni-based diamond-impregnated bit of deep hard-rock boring soldering and manufacture method thereof Download PDFInfo
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- CN103806844B CN103806844B CN201410076939.6A CN201410076939A CN103806844B CN 103806844 B CN103806844 B CN 103806844B CN 201410076939 A CN201410076939 A CN 201410076939A CN 103806844 B CN103806844 B CN 103806844B
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Abstract
The invention discloses a kind of Ni-based diamond-impregnated bit of deep hard-rock boring soldering and manufacture method thereof, the soldering nickel-based matrix compound of the present invention is to be formed by Ni-based carcass, thin wire and diamond sintering, diamond cast is in Ni-based carcass, the percent by volume of diamond content is 30% 80%, and granularity is 35/60 mesh；Described Ni-based carcass is to be made up of the component of following mass percent: nichrome powder 65%～75%, iron powder 25%～35%；Thin wire a diameter of 1.0～1.6mm；The present invention uses Ni-based prealloy solder, substantially increases the performance of drill bit, reduces sintering temperature, decreases the degree of diamond hot injury；Iron content is higher, reduces drill bit cost；Inlay thin wire, reduce Matrix Wear Resistance, beneficially diamond exposure and boring is anti-oblique.The present invention is especially suitable for deep ground consisting of hard rock to creep into, be also applied for superficial part slipping formation and creep into.
Description
Technical field
The invention belongs to oil, technical field of geological exploration, relate to a kind of Ni-based diamond-impregnated bit of soldering and manufacture method thereof,
Specifically, a kind of Ni-based diamond-impregnated bit of deep hard-rock boring soldering and manufacture method thereof are related to.
Background technology
Along with the oil equal energy source of existing exploration and continually developing of mineral resources, geological prospecting is from the superficial part in past, medium and deep
Deep (2000 with deep) is turned to even to surpass deep prospecting (4000m).In deep drilling, wire line coring drills through the heart by feat of not carrying
Technology is applied greatly.Bit life is the longest, drilling efficiency is the fastest, make a trip number of times and time less, labor intensity
Technical economic benefit low, wire line coring is the most obvious.
Under conditions of certain hole depth scope, along with hole depth increases, the effect of hole bed rock stone is increased notable by drilling well liquid columnpressure,
Triaxial pressure suffered by the bed rock stone of hole increases, and the index parameter such as compressive strength of rock, hardness all increases.Under bigger confined pressure effect,
Rock strength increases, and plasticity increases, and causes compact structure, and abrasiveness is weak, and rock drillability reduces, and drillability is 9～12
Level.When superficial part, medium and deep creep into, such stratum is also referred to as hard and compact low-abrasive stratum or " skidding " stratum, but
Thickness is the most little, and drill bit timeliness and life-span are inconspicuous on the impact of whole drilling cost.When deep even surpasses deep drilling,
Such stratum accounts for the overwhelming majority of hole depth, and timeliness and the life-span of drill bit are the most particularly important to the cost of whole boring.
When creeping into superficial part hard and compact low-abrasive stratum, manufacture diamond-impregnated bit frequently with pressure sintering or galvanoplastic, take
The diamond bit of better effects has a following two: (1) drill bit jacketed and inlaid by diamond: utilize weak-wrapped method to make in carcass one
The degree that part diamond is plated is more weak, creeps into middle meeting and comes off from carcass in advance.The diamond come off can wear and tear carcass, has
It is beneficial to diamond exposure.(2) self-forming same central circle saw wave diamond bit: utilize drill bit grinds sword certainly, is always maintained at same
Heart circle pointed tooth situation, improves the pressure of unit are on drill bit labial surface, " wedging " rock, also has the anti-oblique of boring simultaneously
Effect.Both the above drill bit substantially uses tungsten carbide-base as carcass material, goes out sword, necessarily by improve diamond
Overcome hard and compact low-abrasive stratum in degree and creep into the shortcoming that timeliness is low, but the life-span of drill bit receives certain shadow
Ring.Additionally, Chinese invention patent CN102828696 is also disclosed invention one, " hard slipping formation creeps into the impregnated Buddha's warrior attendant of iron-based
Aiguille ", by using iron powder to reduce the cost of manufacture of drill bit, but this drill bit has the feature that bit life is relatively low equally.
Soldering diamond-impregnated bit has crossed research, as Chinese invention patent CN101824968A discloses a kind of novel impregnated
Brazed diamond drill bit, is first passed through soldering processes and diamond carries out pretreatment, then made by the method for hot pressed sintering during making
Go out diamond bit.This invention, by the brazing pretreatment to diamond particles, enhances the bond strength of diamond and carcass,
Improve drill bit creeps into timeliness and life-span.But this patent exploitation be post forming technique manufacture diamond bit, to Buddha's warrior attendant
The hot injury of stone has large effect.Additionally, Chinese patent CN101862834A is open has invented one-step molded multilayer brazed gold
The processing technology of diamond bit, sinters after being mixed with diamond particles by solder under given conditions, makes multi-layered brazing diamond
Drill bit.This invention is reacted by the soldering between diamond with carcass, improves the performance of drill bit.But the brill that this invention is made
Head, carcass is too hard, is not suitable for creeping into of deep low-abrasive hard rock.
In sum, existing diamond bit is difficult to meet the needs of deep well drilling, catalase feature new under the conditions of deep hole
Making drill bit creep into speed low, the life-span is short, seriously hinders the development of Trend of Wireline Core Drilling Techniques, therefore cores deep hole rope
The research of diamond-impregnated bit is necessary.
Summary of the invention
In order to overcome defect present in prior art, the present invention proposes a kind of Ni-based impregnated diamond of deep hard-rock boring soldering
Drill bit and manufacture method thereof, this drill bit be a kind of vacuum without pressing Ni-based diamond-impregnated bit, significantly improve diamond bit and bore
Timeliness during depth portion ground consisting of hard rock and life-span.
Its technical scheme is as follows:
A kind of Ni-based diamond-impregnated bit of deep hard-rock boring soldering, including drilling bit steel body and nickel-base alloy carcass, drill steel
One end of body is provided with female thread, and one end sintering has nickel-base alloy carcass, and impregnated in nickel-base alloy carcass have diamond particles and thin ferrum
Silk, the bottom surface of nickel-base alloy carcass offers the drill bit mouth of a river.
The percent by volume of described diamond content is 30%-80%, and granularity is 35/60 mesh；
Described nickel-base alloy carcass is to be made up of the component of following mass percent: nichrome solder 65%～75%, iron powder
25%～35%；
Described iron powder purity is more than 99.9%, and granularity is 300 mesh.
Further preferably, a diameter of the 1.0 of described thin wire～the soft thin wire of 1.6mm.
Further preferably, described soldering is vacuum brazing sintering process, and brazing temperature is 980 DEG C～1020 DEG C, temperature retention time
It is 8～12min.
Further preferably, the room temperature impact strength Ti value of described diamond particles is not less than 80%, and thermal shock strength TTi value is not
Less than 75%, the granularity of diamond particles be the one in 35/40 mesh, 40/45 mesh and 50/60 mesh diamond or any two kinds or
The mixing of three kinds.
Further preferably, described nichrome solder is pre-alloyed powder, and granularity is 200 mesh, by the group of following mass percent
Divide and constitute:
Cr6%～8%, B2.75～3.5%, Si4%～5%, Fe2.5%～3.5%, C0.06%, Ni surplus.
A kind of Ni-based diamond-impregnated bit of deep hard-rock boring soldering and manufacture method thereof, comprise the following steps:
(1) batch mixing
Use homemade rocker-arm batch mixer to carry out batch mixing, use sintered carbide ball as batch mixing framework material, by nickel-based solder and
Iron powder is put in batch mixer and is mixed, and incorporation time is 2h；
(2) pelletizing
With batch mixing pelletizer, mixed carcass material and diamond being carried out mixed pelletizing, spheroid particle diameter is 0.8～1.5mm；
(3) cold moudling
The spheroid being enclosed with diamond is loaded in punching block according to the quality calculated, working lining labial surface is uniformly assigned iron wire,
Cold pressing with four-column hydraulic press, form bit operation layer；Drill bit inoperative layer powder is loaded punching block by the quality calculated
In, cold pressing, form drill bit inoperative layer；
(4) cold pressing reduction
The working lining of cold moudling is put into reduction furnace, at a temperature of 400 DEG C, places 0.5h, make glue fully volatilize；
(5) die-filling, sintering
By reduction furnace working lining out die-filling, sintering together with the inoperative layer suppressed, carry out under higher vacuum condition
Pressureless sintering, brazing temperature is 980 DEG C～1020 DEG C, and temperature retention time is 5～15min, furnace cooling.
Beneficial effects of the present invention: (1) present invention uses Ni-based prealloy solder, sinters under vacuum conditions simultaneously, reduces
Sintering temperature, decreases the degree of diamond hot injury；(2) adding iron powder in solder, content is higher, reduces drill bit
This；(3) in carcass, inlay thin wire, reduce the part wearability of carcass, beneficially diamond exposure；(4) vacuum pricker
Welding makes active element chromium in solder react with diamond generation chemical metallurgy, improves carcass trapping gold hard rock ability, prolongs
Grow bit life.
Accompanying drawing explanation
Fig. 1 (a) is the sectional view of the drill bit of the present invention, and Fig. 1 (b) is the enlarged drawing of bit operation layer I；
Fig. 2 (a) is the top view of Fig. 1, and Fig. 2 (b) is the enlarged drawing of bit operation layer labial surface II.
1 thin wire；2 nickel-base alloy carcasses；The 3 drill bit mouths of a river；4 diamond particles；5 drill steels
Body；6 drill bit thread.
Detailed description of the invention
With detailed description of the invention, technical scheme is described in more detail below in conjunction with the accompanying drawings.
With reference to Fig. 1, a kind of Ni-based diamond-impregnated bit of deep hard-rock boring soldering, including drilling bit steel body 5 and nickel-base alloy
Carcass 2, one end of drilling bit steel body 5 is provided with female thread 6, and one end sintering has nickel-base alloy carcass 2, in nickel-base alloy carcass 2
Impregnated have diamond particles 4 and thin wire 1, and the bottom surface of nickel-base alloy carcass 2 offers the drill bit mouth of a river 3.
The percent by volume of described diamond content is 30%-80%, and granularity is 35/60 mesh.
Described nickel-base alloy carcass is to be made up of the component of following mass percent: nichrome solder 65%～75%, iron powder
25%～35%.
Described iron powder purity is more than 99.9%, and granularity is 300 mesh.
The soft thin wire of a diameter of the 1.0～1.6mm of described thin wire (1).
Described soldering is vacuum brazing sintering process, and brazing temperature is 980 DEG C～1020 DEG C, and temperature retention time is 8～12min.
The room temperature impact strength Ti value of described diamond particles is not less than 80%, and thermal shock strength TTi value is not less than 75%, gold
The granularity of hard rock granule is a kind of or mixing of any two or three in 35/40 mesh, 40/45 mesh and 50/60 mesh diamond.
Described nichrome solder is pre-alloyed powder, and granularity is 200 mesh, is made up of the component of following mass percent:
Cr6%～8%, B2.75～3.5%, Si4%～5%, Fe2.5%～3.5%, C0.06%, Ni surplus.
A kind of Ni-based diamond-impregnated bit of deep hard-rock boring soldering and manufacture method thereof, comprise the following steps:
(1) batch mixing
Use homemade rocker-arm batch mixer to carry out batch mixing, use sintered carbide ball as batch mixing framework material, by nickel-based solder and
Iron powder is put in batch mixer and is mixed, and incorporation time is 2h；
(2) pelletizing
With batch mixing pelletizer, mixed carcass material and diamond being carried out mixed pelletizing, spheroid particle diameter is 0.8～1.5mm；
(3) cold moudling
The spheroid being enclosed with diamond is loaded in punching block according to the quality calculated, working lining labial surface is uniformly assigned iron wire,
Cold pressing with four-column hydraulic press, form bit operation layer；Drill bit inoperative layer powder is loaded punching block by the quality calculated
In, cold pressing, form drill bit inoperative layer；
(4) cold pressing reduction
The working lining of cold moudling is put into reduction furnace, at a temperature of 400 DEG C, places 0.5h, make glue fully volatilize；
(5) die-filling, sintering
By reduction furnace working lining out die-filling, sintering together with the inoperative layer suppressed, carry out under higher vacuum condition
Pressureless sintering, brazing temperature is 980 DEG C～1020 DEG C, and temperature retention time is 5～15min, furnace cooling.
Embodiment 1:
According to actual borehole design alternative bit size, select matrix formula, drill bit structure and gold according to engineering geology lithologic character
Hard rock parameter, carries out charging and calculates, weighing, and batch mixing is colded pressing, reduction, and steel body aligns die-filling, vacuum non-pressure sintering, insulation,
Furnace cooling, machining, inspection is dispatched from the factory.
Now as a example by (drillability is 11 grades), design the rope of φ 56.5/38mm as quartz porphyry with indoor drilling test rock sample
Rope coring bit: use Ni-based prealloy powder and iron powder as matrix formula, stud with diamond and thin wire, Bit in carcass
Face is platybasic type, described in detail below:
The most Ni-based carcass component (mass percent): the nickel chromium triangle borosilicate solder 70% selecting certain company to produce, iron powder 30%, grain
Degree is 200 mesh；
2. use JRD380 type 40/45 mesh and 50/60 mesh diamond, mix for 1:2 in mass ratio, diamond body volume concentrations
It is 80%；
3. batch mixing
Use homemade rocker-arm batch mixer to carry out batch mixing, use sintered carbide ball as batch mixing framework material, by nickel-based solder and
Iron powder is put in batch mixer and is mixed, and incorporation time is 2 hours；
4. pelletizing
With batch mixing pelletizer, mixed carcass material and diamond being carried out mixed pelletizing, spheroid particle diameter is 1.0～1.2mm；
5. cold moudling
The spheroid being enclosed with diamond is loaded in punching block according to the quality calculated, working lining labial surface is uniformly assigned a diameter of
The iron wire of 1.0mm, iron wire cross-sectional area accounts for the 5% of bit bottom lip surface area, colds pressing with four-column hydraulic press, is formed
Bit operation layer, is loaded drill bit inoperative layer powder in punching block by the quality calculated, colds pressing, and forms drill bit inoperative layer；
6. cold pressing reduction
The working lining of cold moudling is put into reduction furnace, places about half an hour at a temperature of 400 DEG C, make glue fully wave
Send out；
The most die-filling, sintering
By reduction furnace working lining out die-filling, sintering together with the inoperative layer suppressed, carry out under higher vacuum condition
Pressureless sintering, vacuum is 1.3 × 10-3MPa, brazing temperature is 1010 DEG C, and temperature retention time is 10min, furnace cooling.
8. the drill bit after coming out of the stove is tested, and eligible carries out the mouth of a river, rib machine processing, sprays paint, mark, then checks, and goes out
Factory.
Result of the test shows, the average timeliness using the drill bit of this fabrication techniques is 1.8m/h, and bit life is about 38m/,
21.2% and 32.5% have been respectively increased it than conventional hot-press drill bit.
Embodiment 2:
Make the field industrial experimentation drill bit 1 of φ 75.5/55mm.
The manufacture method of the field industrial experimentation drill bit 1 of φ 75.5/55mm is basically identical with laboratory test drill bit, simply Buddha's warrior attendant
Stone concentration and iron content are slightly different, are designed diamond concentration and the tyre body hardness of drill bit by the scene section of boring rock sample,
Diamond concentration is 80%, and iron content is 25%, and tyre body hardness is HRC35, a diameter of 1.6mm of thin wire, thin wire
Cross-sectional area accounts for the 10% of bit bottom lip surface area.
Test carry out in building site, Jiangxi, drilling depth is 2526.16m, the section of creeping into rock stratum be drillability rank be 10～11 grades
Silication granite, local accompany quartz vein.
Through on-the-spot it was verified that the timeliness of the Ni-based diamond-impregnated bit of the soldering of this fabrication techniques and life-span all than on-the-spot its
He is improved by producer's drill bit, improves index and is respectively more than 23% and more than 30%.
Embodiment 3:
Make the field industrial experimentation drill bit 2 of φ 75.5/55mm.
The manufacture method of the field industrial experimentation drill bit 2 of φ 75.5/55mm is basically identical with laboratory test drill bit, simply Buddha's warrior attendant
Stone concentration and iron content are slightly different, are designed diamond concentration and the tyre body hardness of drill bit by the scene section of boring rock sample,
Diamond concentration is 60%, and iron content is 35%, and tyre body hardness is HRC28, a diameter of 1.2mm of thin wire, thin wire
Cross-sectional area accounts for the 5% of labial surface area.
Test carry out in building site, Jiangxi, drilling depth is 2612.33m, creep into rock stratum be drillability rank be the quartz of 11 grades
Porphyry.
Through on-the-spot it was verified that the timeliness of the Ni-based diamond-impregnated bit of the soldering of this fabrication techniques and life-span all than on-the-spot its
He is improved by producer's drill bit, improves index and is respectively more than 25% and more than 20%.
The above, the only present invention preferably detailed description of the invention, protection scope of the present invention is not limited to this, any is familiar with basis
Those skilled in the art in the technical scope of present disclosure, the simple change of the technical scheme that can become apparent to
Or equivalence replacement each falls within protection scope of the present invention.
Claims (4)
1. the Ni-based diamond-impregnated bit of deep hard-rock boring soldering, including drill steel
Body (5) and nickel-base alloy carcass (2), described drill bit rigid body (5) one end sintering has Ni-based conjunction
Gold carcass (2)；Described soldering is vacuum brazing sintering process, brazing temperature be 980 DEG C～
1020 DEG C, temperature retention time is 8～12min；Impregnated in nickel-base alloy carcass (2) have Buddha's warrior attendant
Stone granule (4) and thin wire (1), the bottom surface of nickel-base alloy carcass (2) offers drill bit water
Mouth (3)；It is characterized in that:
One end of drilling bit steel body (5) is provided with female thread (6)；
The percent by volume of described diamond particle content is 30%-80%, and granularity is 35/60 mesh；
Described nickel-base alloy carcass is to be made up of the component of following mass percent: nichrome pricker
Material 65%～75%, iron powder 25%～35%；
Described iron powder purity is more than 99.9%, and granularity is 300 mesh；
Described nichrome solder is pre-alloyed powder, and granularity is 200 mesh, by following quality
The component of percentage ratio is constituted: Cr6%～8%, B2.75～3.5%, Si4%～5%,
Fe2.5%～3.5%, C0.06%, Ni surplus.
The Ni-based impregnated diamond of deep the most according to claim 1 hard-rock boring soldering
Drill bit, it is characterised in that a diameter of the 1.0～1.6mm of described thin wire (1)
Soft thin wire.
The Ni-based impregnated diamond of deep the most according to claim 1 hard-rock boring soldering
Drill bit, it is characterised in that the room temperature impact strength Ti value of described diamond particles is not less than 80%,
Thermal shock strength TTi value is not less than 75%, the granularity of diamond particles be 35/40 mesh, 40/45
A kind of or the mixing of any two or three in mesh and 50/60 mesh diamond.
4. the deep hard-rock boring soldering as described in claim 1-3 is arbitrary is Ni-based pregnant
The manufacture method of diamond-impregnated bit, it is characterised in that comprise the following steps:
(1) batch mixing
Use homemade rocker-arm batch mixer to carry out batch mixing, use sintered carbide ball as batch mixing bone
Frame material, puts into nichrome solder and iron powder in batch mixer and mixes, incorporation time
For 2h；
(2) pelletizing
With batch mixing pelletizer, mixed carcass material and diamond particles are carried out mixed pelletizing, ball
Body particle diameter is 0.8～1.5mm；
(3) cold moudling
The spheroid being enclosed with diamond particles is loaded in punching block according to the quality calculated, in work
Make uniformly to assign on layer labial surface thin wire, cold pressing with four-column hydraulic press, form drill bit work
Make layer；Drill bit inoperative layer powder is loaded in punching block by the quality calculated, colds pressing, formed
Drill bit inoperative layer；
(4) cold pressing reduction
The working lining of cold moudling is put into reduction furnace, at a temperature of 400 DEG C, places 0.5h,
Glue is made fully to volatilize；
(5) die-filling, sintering
By reduction furnace working lining out together with the inoperative layer suppressed die-filling, sintering,
Carrying out pressureless sintering under higher vacuum condition, brazing temperature is 980 DEG C～1020 DEG C, protects
The temperature time is 5～15min, furnace cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410076939.6A CN103806844B (en) | 2014-03-03 | 2014-03-03 | The Ni-based diamond-impregnated bit of deep hard-rock boring soldering and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410076939.6A CN103806844B (en) | 2014-03-03 | 2014-03-03 | The Ni-based diamond-impregnated bit of deep hard-rock boring soldering and manufacture method thereof |
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| Publication Number | Publication Date |
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| CN103806844A CN103806844A (en) | 2014-05-21 |
| CN103806844B true CN103806844B (en) | 2016-09-07 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104439589B (en) * | 2014-10-31 | 2018-01-19 | 中国石油化工股份有限公司 | A kind of junk mill frock and its manufacturing process |
| CN105445090B (en) * | 2015-11-24 | 2018-04-20 | 中国石油大学(华东) | A kind of standard Attrition part for being suitable for oil drilling formation rock abrasiveness measure |
| CN106194036B (en) * | 2016-08-30 | 2018-07-06 | 桂林特邦新材料有限公司 | Middle low temperature brazing diamond bit and preparation method thereof |
| CN108161721B (en) * | 2018-01-10 | 2023-10-24 | 江苏韦尔博新材料科技有限公司 | Multi-layer brazing diamond grinding head |
| CN110253025B (en) * | 2019-06-05 | 2021-07-02 | 江苏华昌工具制造有限公司 | Sintering method of alloy particle saw blade |
| CN111250892A (en) * | 2020-03-13 | 2020-06-09 | 苏州昆腾威新材料科技有限公司 | Brazing material for automatic brazing, and preparation method and application thereof |
| CN111299740A (en) * | 2020-03-13 | 2020-06-19 | 苏州昆腾威新材料科技有限公司 | Self-sharpening straw smashing cutter and preparation method thereof |
| CN113669057B (en) * | 2021-08-06 | 2022-05-10 | 中国矿业大学 | Diamond composite cutting pick and low-temperature activation liquid-phase sintering process thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1116858B1 (en) * | 2000-01-13 | 2005-02-16 | Camco International (UK) Limited | Insert |
| CN101824968B (en) * | 2010-05-13 | 2013-02-20 | 中国地质大学（北京） | Novel brazed impregnated diamond bit |
| CN102294527B (en) * | 2011-07-29 | 2013-04-17 | 江苏华昌工具制造有限公司 | Brazing process of diamond thin-wall drill bit |
| CN203729885U (en) * | 2014-03-03 | 2014-07-23 | 辽宁工业大学 | Soldering nickel-based impregnated diamond bit for deep hard-rock drilling |
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