CN104453722A - Method of ordered-arrangement brazing impregnated diamond bit - Google Patents
Method of ordered-arrangement brazing impregnated diamond bit Download PDFInfo
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- CN104453722A CN104453722A CN201410714056.3A CN201410714056A CN104453722A CN 104453722 A CN104453722 A CN 104453722A CN 201410714056 A CN201410714056 A CN 201410714056A CN 104453722 A CN104453722 A CN 104453722A
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- diamond
- ordered arrangement
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- working lining
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
Abstract
The invention relates to a method of a diamond-impregnated bit, in particular to a method of an ordered-arrangement brazing impregnated diamond bit. The method comprises the steps of (a) manufacturing powder brazing filler metal (1) and working layer powder (2) into a sheet steel billet with the thickness of 0.4mm through a cold pressing forming process to respectively serve as a working layer 1 and a working layer 2; (b) brushing a layer of special organic glue on the surface of the working layer 1; (c) sticking diamonds to the working layer 1 by means of the designed ordered arrangement formwork, and sticking the working layer 2 to the diamonds to form working layers 3; (d) stacking up multiple layers of the working layers 3 with the diamonds in ordered arrangement in the same sequence, putting the whole into a graphite mould with a bit steel body and a transition layer, and sintering the graphite mould in a vacuum furnace to obtain the ordered-arrangement brazing impregnated diamond bit. By means of the method, ordered arrangement of the diamonds can be achieved, concentrates of the diamonds on the different work structure surfaces of the bit can be arranged reasonably, sharpness of the diamond bit is improved remarkably, the service life of the diamond bit is prolonged remarkably, and drill cost and drilling cost can be reduced.
Description
Technical field
The present invention relates to a kind of diamond-impregnated bit method, particularly relate to a kind of ordered arrangement soldering diamond-impregnated bit method.
Background technology
At present, China's geological prospecting is progressively to deep development, and the rock stratum that deep drilling faces is more complicated, also higher to diamond bit performance requirement.The method that tradition manufactures diamond bit has pressure sintering and galvanoplastic, the more difficult control of diamond bit performance that pressure sintering manufactures, and is difficult to adapt to creeping into of stratum complicated and changeable, deep; The diamond bit that galvanoplastic manufacture often inside and outside gauge effect is poor, and the application life of drill bit is lower, is also difficult to adapt to deep bad ground, particularly incomplete stratum and strong abrasive layer.In addition, tradition diamond bit working lining internal construction is comparatively single, also namely diamond and the matrix composition of carcass inside be all performance consistent be evenly distributed in working lining, cause the compliance of drill bit to rock stratum undesirable, greatly reduce the functional performance of drill bit.
Using method for brazing to manufacture diamond tool is that Chinese scholars studied more a kind of new method in recent years, soldering tech can make some active element in solder and diamond top layer carbon atom generation chemical metallurgy react, layer of metal carbide lamella is formed at diamond surface, by this layer of carbide lamella, diamond, solder and matrix three form firmly enhanced primary treatment, be conducive to improving single adamantine height of protrusion and working time, and then improve stock-removing efficiency and the application life of instrument.The working environment very severe of diamond bit at the bottom of hole is the life-span of guarantee fund's diamond bit, and the good nickel-based solder of abrasion resistance should be adopted to make diamond bit.But, solder plate diamond strong while diamond also can be made to be difficult to sword, so the brazed diamond tool succeeded in developing at present is generally single layer soldering diamond tool.Chinese invention patent CN 101824968A discloses a kind of novel brazed impregnated diamond bit, and this invention, by the brazing pretreatment to diamond particles, enhances the bond strength of diamond and carcass, and what improve drill bit creeps into timeliness and life-span.But this patent exploitation is the manufacture technics diamond bit of post forming, has larger impact to adamantine fire damage.In addition, Chinese patent CN101862834A has openly invented the manufacture craft of one-step molded multilayer brazed diamond drill bit, sinters under given conditions, make multilayer brazed diamond drill bit with diamond particles after being mixed by nickel-based solder.But the drill bit that this invention is made, carcass is too hard, and diamond is difficult to sword, is not suitable for creeping into of deep low-abrasive hard rock especially.In order to realize, soldering is diamond impregnated goes out sword in time, the present inventor once attempted adopting and in carcass, added thin wire to realize the advanced wear of carcass, the method achieve and adamantinely go out sword in time, but in drill bit, diamond concentration is higher and be lack of alignment, and adamantine utilization rate has much room for improvement.
Carrying out ordering to the diamond in diamond tool is also research topic popular in recent years, and ordered arrangement diamond tool can make every diamond in instrument be fully used, and then reduces the diamond consumption of instrument, reduces costs.But owing to being difficult to make the ordered arrangement template with high density hole, ordered arrangement technology is comparatively applicable to being applied in the diamond tool making of low concentration.Therefore, ordered arrangement technology is often applied in the low-concentration gold such as diamond saw blade, diamond-impregnated wheel diamond tool.For ensureing the life-span of drill bit, the diamond concentration of traditional diamond-impregnated bit is about 90%, and electroplated diamond bit even reaches 120%, is about 2 ~ 4 times of diamond saw blade.Patent of invention CN101285371 discloses a kind of diamond location arrangement impregnated rock bit, but the method belongs to the diamond bit that conventional thermocompression method manufactures, diamond and carcass fail to realize enhanced primary treatment, adamantine utilization rate is still lower, and due to diamond concentration lower, bit life is shorter.For realizing the ordered arrangement of soldering diamond-impregnated bit, the present inventor once attempted adopting on stainless steel thin slice after the good ordered arrangement mono-layer diamond of soldering, again multi-layered brazing sheet is stacked up, bonding carcass powder is added between soldering lug, soldering-hot pressing multilayer order arrangement diamond bit has been made again by pressure sintering, this drill bit achieves adamantine ordered arrangement, reduce adamantine concentration, what improve drill bit creeps into timeliness, but because this manufacture method belongs to post forming, increase the weight of adamantine fire damage, it is not clearly that the life-span of drill bit improves, therefore also need to improve the manufacturing process manufacturing soldering diamond-impregnated bit.
In sum, existing diamond bit is difficult to the needs meeting deep well drilling, therefore, develops a kind of high timeliness, long-life, low cost new diamond bit being adapted to deep hole rope core-drilling necessary.
Summary of the invention
The object of the present invention is to provide a kind of ordered arrangement soldering diamond-impregnated bit method, the method improves diamond and is connected with carcass and reduces diamond bit concentration and make diamond in drill bit carry out ordered arrangement, solve the problem that diamond utilization rate in bit operation tooth is low, diamond not easily goes out sword, sharpness and the application life of drill bit are significantly improved.
The object of the invention is to be achieved through the following technical solutions:
A kind of ordered arrangement soldering diamond-impregnated bit method, said method comprising the steps of:
(1), after being mixed by the solder of design, made the sheet thin stock of drill bit labial surface shape by cold-press moulding technique, about 0.4mm is thick;
(2) working lining powder is made the thick sheet thin stock of about 0.4mm by cold-press moulding technique;
(3) on thin stock, spray organic gel, pertusate ordered arrangement template proximate will be beaten on it, then above template, spread one deck diamond, with a banister brush unnecessary diamond swept down and reclaim, opening template, the diamond just with ordered arrangement on thin stock;
(4) spray organic gel in the one side of thin stock, and be attached to on adamantine thin stock, form the thin stock of combination;
(5) in order multilayer thin stock is superimposed, loads in cold stamping die, then cold pressing once, make it to become the working lining of colding pressing that has some strength;
(6) working lining is put into the graphite jig that drilling bit steel body and transition zone are housed, sinter in a vacuum furnace, obtain ordered arrangement soldering diamond-impregnated bit.
A kind of described ordered arrangement soldering diamond-impregnated bit method, described working lining powder adopts NiCr solder alloy, or is added with one or both in the middle of Fe powder, WC powder.
A kind of described ordered arrangement soldering diamond-impregnated bit method, described working lining powder adopts Fe powder, 663Cu, Ni powder, Mn mixed powder in proportion.
A kind of described ordered arrangement soldering diamond-impregnated bit method, the aperture of described ordered arrangement template can be determined according to demand, but single adamantine particle diameter d must be greater than, preferably be less than 3 times of diamond diameters, only fall into 1 diamond in hole if think, then aperture is between d ~ 2d, improves diamond concentration if want, can pore size of template be increased, make in single hole, to fall into 2 ~ 3 diamonds.
A kind of described ordered arrangement soldering diamond-impregnated bit method, the organic gel of described spraying requires to have caking property at normal temperatures, and can vapor away as early as possible in lower sintering temperature-rise period, and remaining residuals is low.
A kind of described ordered arrangement soldering diamond-impregnated bit method, described ordered arrangement soldering diamond-impregnated bit, thin stock 3 need be stacked up in order, such as working lining 1 → diamond → working lining 2 → working lining 1 → diamond → working lining 2 ... → diamond.
A kind of described ordered arrangement soldering diamond-impregnated bit method, the multilayer thin stock 3 after described superposition in order, loads in cold stamping die, then colds pressing once, make it to become the working lining 4 of colding pressing that has intensity.
A kind of described ordered arrangement soldering diamond-impregnated bit method, drill-bit sintering carries out in a vacuum furnace, and sintering temperature is not higher than 1050 DEG C, and vacuum is less than 10
-3pa.
Ordered arrangement soldering diamond-impregnated bit prepared by the present invention have diamond exposure in time, carcass plates the advantages such as diamond is strong, diamond utilization rate is high, bit life is long, can be widely used in the field such as geological prospecting, engineering the drilling, be specially adapted to deep hole hard-rock boring.
Accompanying drawing explanation
Fig. 1 is the manufacturing process flow schematic diagram of ordered arrangement soldering diamond-impregnated bit;
Fig. 2 is the impregnated aiguille sectional drawing of ordered arrangement soldering;
Fig. 3 (a) is the impregnated aiguille top view of ordered arrangement soldering;
Fig. 3 (b) is adamantine Pareto diagram in Cutter;
Fig. 4 is the composition diagram of ordered arrangement soldering diamond-impregnated bit cutting teeth.
In figure: 1---cutting teeth; 2---the mouth of a river; 3---drilling bit steel body; 4---internal thread; 5---diamond; 6---carcass; 7---solder layer is 1.; 8---working lining is 2..
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1:
A kind of ordered arrangement soldering diamond-impregnated bit preparation technology is as follows:
The first step: after 1. (NiCrBSi solder alloy 70 wt %+Fe 30 wt %) mixes by the solder of design, made the sheet thin stock 1 of drill bit labial surface shape by cold-press moulding technique, about 0.4mm is thick;
Second step: by working lining powder 2. (Fe 40wt %+663Cu 30wt %+Ni 20wt %+Mn 10wt %) make the thick sheet thin stock 2 of about 0.4mm by cold-press moulding technique;
3rd step: spray organic gel on thin stock 1, pertusate ordered arrangement template proximate will be beaten on it, one deck diamond is spread again above template, with a banister brush unnecessary diamond swept down and reclaim, open template, diamond just with ordered arrangement on thin stock 1, diamond concentration is about 45%;
(4) spray organic gel in the one side of thin stock 2, and be attached to on adamantine thin stock 1, form the thin stock 3 of combination;
(5) in a certain order multilayer thin stock 3 is superimposed, loads in cold stamping die, then cold pressing once, make it to become the working lining 4 of colding pressing that has some strength;
(6) working lining 4 is put into the graphite jig that drilling bit steel body and transition zone are housed, sinter in a vacuum furnace, obtain ordered arrangement soldering diamond-impregnated bit, single adamantine height of protrusion and utilization rate can be significantly improved, reduce drill bit cost, improve sharpness and the application life of drill bit.
The ordered arrangement soldering diamond-impregnated bit prepared with present invention process; when creeping into Ⅸ hard and compact granitello; creeping into speed per hour is 1.2m/h, improves 60%(0.75m/h than common hot pressing diamond bit), improve 17.6%(1.02m/h than electroplated diamond bit).Bit life improves more than 40%, and the reduction of diamond concentration (volumetric concentration is about 45%) in drill bit, greatly reduce drill bit cost.
Embodiment 2:
A kind of ordered arrangement soldering diamond-impregnated bit preparation technology is as follows:
The first step: after 1. (NiCrBSi solder alloy 70 wt %+WC 20 wt %) mixes by the solder of design, made the sheet thin stock 1 of drill bit labial surface shape by cold-press moulding technique, about 0.4mm is thick;
Second step: by working lining powder 2. (Fe 40wt %+663Cu 35wt %+Ni 20wt %+Mn 5wt %) make the thick sheet thin stock 2 of about 0.4mm by cold-press moulding technique;
3rd step: spray organic gel on thin stock 1, pertusate ordered arrangement template proximate will be beaten on it, one deck diamond is spread again above template, with a banister brush unnecessary diamond swept down and reclaim, open template, diamond just with ordered arrangement on thin stock 1, diamond concentration is about 60%;
(4) spray organic gel in the one side of thin stock 2, and be attached to on adamantine thin stock 1, form the thin stock 3 of combination;
(5) in a certain order multilayer thin stock 3 is superimposed, loads in cold stamping die, then cold pressing once, make it to become the working lining 4 of colding pressing that has some strength;
(6) working lining 4 is put into the graphite jig that drilling bit steel body and transition zone are housed, sinter in a vacuum furnace, obtain ordered arrangement soldering diamond-impregnated bit, single adamantine height of protrusion and utilization rate can be significantly improved, reduce drill bit cost, improve sharpness and the application life of drill bit.
The ordered arrangement soldering diamond-impregnated bit prepared with present invention process, when creeping into Ⅸ hard and compact fine sandstone, creeping into speed per hour is 2.35m/h, improves 30.5%(1.8m/h than common hot pressing diamond bit), improve 20.5%(1.95m/h than electroplated diamond bit).Bit life improves more than 30%, and the reduction of diamond concentration (volumetric concentration is about 60%) in drill bit, the use of a small amount of WC, greatly reduces drill bit cost.
Embodiment 3:
A kind of ordered arrangement soldering diamond-impregnated bit preparation technology is as follows:
The first step: after 1. (NiCrBSi solder alloy 70 wt %+WC10 wt %) mixes by the solder of design, made the sheet thin stock 1 of drill bit labial surface shape by cold-press moulding technique, about 0.4mm is thick;
Second step: by working lining powder 2. (Fe 40wt %+663Cu 35wt %+Ni 17wt %+Mn 8wt %) make the thick sheet thin stock 2 of about 0.4mm by cold-press moulding technique;
3rd step: spray organic gel on thin stock 1, pertusate ordered arrangement template proximate will be beaten on it, one deck diamond is spread again above template, with a banister brush unnecessary diamond swept down and reclaim, open template, diamond just with ordered arrangement on thin stock 1, diamond concentration is about 60%;
(4) spray organic gel in the one side of thin stock 2, and be attached to on adamantine thin stock 1, form the thin stock 3 of combination;
(5) in a certain order multilayer thin stock 3 is superimposed, loads in cold stamping die, then cold pressing once, make it to become the working lining 4 of colding pressing that has some strength;
(6) working lining 4 is put into the graphite jig that drilling bit steel body and transition zone are housed, sinter in a vacuum furnace, obtain ordered arrangement soldering diamond-impregnated bit, single adamantine height of protrusion and utilization rate can be significantly improved, reduce drill bit cost, improve sharpness and the application life of drill bit.
The ordered arrangement soldering diamond-impregnated bit prepared with present invention process; creep into VIII grade hard ~ hard middle grain granite time; creeping into speed per hour is 1.8m/h, improves 50%(1.2m/h than common hot pressing diamond bit), improve 38.5%(1.3m/h than electroplated diamond bit).Bit life improves more than 30%, and the reduction of diamond concentration (volumetric concentration is about 60%) in drill bit, the use of a small amount of WC, greatly reduces drill bit cost.
More than implementing only to do the example that illustrates the present invention, is not limitation of the invention, and the present invention can also have other embodiment, all employings to be equal to replace or the technical scheme of equivalent transformation form, all belongs to the protection domain of application claims.
Claims (8)
1. an ordered arrangement soldering diamond-impregnated bit method, is characterized in that, said method comprising the steps of:
(1), after 1. being mixed by the solder of design, made the sheet thin stock (1) of drill bit labial surface shape by cold-press moulding technique, about 0.4mm is thick;
(2) 2. working lining powder is made the thick sheet thin stock (2) of about 0.4mm by cold-press moulding technique;
(3) on thin stock 1, organic gel is sprayed, pertusate ordered arrangement template proximate will be beaten on it, then above template, spread one deck diamond, and with a banister brush unnecessary diamond swept down and reclaim, open template, the diamond just with ordered arrangement on thin stock (1);
(4) spray organic gel in the one side of thin stock (2), and be attached to on adamantine thin stock (1), form the thin stock (3) of combination;
(5) in order multilayer thin stock (3) is superimposed, loads in cold stamping die, then cold pressing once, make it to become the working lining of colding pressing (4) that has some strength;
(6) working lining (4) is put into the graphite jig that drilling bit steel body and transition zone are housed, sinter in a vacuum furnace, obtain ordered arrangement soldering diamond-impregnated bit.
2. a kind of ordered arrangement soldering diamond-impregnated bit method according to claim 1, it is characterized in that, 1. described working lining powder adopts NiCr solder alloy, or is added with one or both in the middle of Fe powder, WC powder.
3. a kind of ordered arrangement soldering diamond-impregnated bit method according to claim 1, it is characterized in that, 2. described working lining powder adopts Fe powder, 663Cu, Ni powder, Mn mixed powder in proportion.
4. a kind of ordered arrangement soldering diamond-impregnated bit method according to claim 1, it is characterized in that, the aperture of described ordered arrangement template can be determined according to demand, but single adamantine particle diameter d must be greater than, preferably be less than 3 times of diamond diameters, only fall into 1 diamond in hole if think, then aperture is between d ~ 2d, improve diamond concentration if want, can pore size of template be increased, make in single hole, to fall into 2 ~ 3 diamonds.
5. a kind of ordered arrangement soldering diamond-impregnated bit method according to claim 1, it is characterized in that, the organic gel of described spraying requires to have caking property at normal temperatures, and can vapor away as early as possible in lower sintering temperature-rise period, and remaining residuals is low.
6. a kind of ordered arrangement soldering diamond-impregnated bit method according to claim 1, it is characterized in that, described ordered arrangement soldering diamond-impregnated bit, thin stock (3) need be stacked up in order, such as working lining (1) → diamond → working lining (2) → working lining (1) → diamond → working lining (2) ... → diamond.
7. a kind of ordered arrangement soldering diamond-impregnated bit method according to claim 1, it is characterized in that, the multilayer thin stock (3) after described superposition in order, loads in cold stamping die, cold pressing again once, make it to become the working lining of colding pressing (4) that has intensity.
8. a kind of ordered arrangement soldering diamond-impregnated bit method according to claim 1, it is characterized in that, drill-bit sintering carries out in a vacuum furnace, and sintering temperature is not higher than 1050 DEG C, and vacuum is less than 10
-3pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714056.3A CN104453722A (en) | 2014-12-02 | 2014-12-02 | Method of ordered-arrangement brazing impregnated diamond bit |
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| CN201410714056.3A CN104453722A (en) | 2014-12-02 | 2014-12-02 | Method of ordered-arrangement brazing impregnated diamond bit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825756A (en) * | 2017-01-16 | 2017-06-13 | 河南颍川新材料股份有限公司 | A kind of production method of ordered arrangement diamond saw blade |
| CN108673362A (en) * | 2018-06-05 | 2018-10-19 | 泉州华大超硬工具科技有限公司 | A kind of preparation method of novel diamond ordered arrangement metal abrading block |
| CN109365879A (en) * | 2018-12-05 | 2019-02-22 | 江苏锋菱超硬工具有限公司 | A kind of military project plate armour Kevlar layer boring long-life ultra-thin sintering soldering hole drill |
| CN110293228A (en) * | 2019-06-18 | 2019-10-01 | 中国地质大学（武汉） | A kind of ordered arrangement diamond bit working lining and its preparation system and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109365879A (en) * | 2018-12-05 | 2019-02-22 | 江苏锋菱超硬工具有限公司 | A kind of military project plate armour Kevlar layer boring long-life ultra-thin sintering soldering hole drill |
| CN110293228A (en) * | 2019-06-18 | 2019-10-01 | 中国地质大学（武汉） | A kind of ordered arrangement diamond bit working lining and its preparation system and method |
| CN110293228B (en) * | 2019-06-18 | 2020-09-25 | 中国地质大学（武汉） | Preparation method of orderly-arranged diamond bit working layer |
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Application publication date: 20150325 |
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