CN102587838A - Manufacturing method of hot-press polymerized coarse-grain diamond drill bit - Google Patents
Manufacturing method of hot-press polymerized coarse-grain diamond drill bit Download PDFInfo
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- CN102587838A CN102587838A CN2011103926145A CN201110392614A CN102587838A CN 102587838 A CN102587838 A CN 102587838A CN 2011103926145 A CN2011103926145 A CN 2011103926145A CN 201110392614 A CN201110392614 A CN 201110392614A CN 102587838 A CN102587838 A CN 102587838A
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Abstract
The invention discloses a manufacturing method of a hot-press polymerized coarse-grain diamond drill bit, comprising the steps of: firstly prefabricating polymerized coarse-grain diamond fan-shaped cutting unit thin layers by using a cold-press method; regularly and vertically arraying the cutting unit thin layers with different specifications along the radial direction of a drill bit layer by layer to form fan-shaped cutting work blocks; and placing the a plurality of cutting work blocks into a graphite mould and performing hot pressing to form the hot-press polymerized coarse-grain diamond drill bit. The cutting unit thin layers are distributed and arrayed in a work layer of the drill bit like a concentric circle, so that the principle of drilling to crush rocks is embodied; continuous crushing caves can be formed at the rocks at the bottoms of holes, so that the rock crushing cave effect can be fully utilized during the drilling; and the polymerized coarse-grain diamond has good self-sharpening effect and can keep very high exposure, so that the rock cutting depth is improved and the rock crushing efficiency of the drill bit is high. Compared with the common drill bits, the manufactured drill bit in the invention has obvious advantages in the deep hard rock prospecting and the wire line coring drilling.
Description
Technical field
The present invention relates to the manufacturing approach of the used diamond bit in Geological Engineering subject field, particularly a kind of manufacturing approach of hot pressing polymerization large stone bit.
Background technology
China begins to develop synthetic diamond core bit, up to now existing nearly half a century.Though present diamond bit has preferable performance, can obtain the high economic technical indicator.But along with the development to the deep prospecting direction, the rock stratum is more and more harder and complicated, changeable; The wire line coring probing is imperative, and not only drilling efficiency is high to require diamond bit, and requires to grow application life, also requires drill bit will get well the compliance of rock stratum; And the kind of existing diamond bit is few, and its performance is difficult to satisfy above-mentioned many-sided requirement.
Diamond bit is in creeping into, and little embrittlement phenomenon can appear in the adamantine edges and corners of part, and this helps keeping the sharp state and raising rate of penetration of drill bit.But this little embrittlement is very limited, therefore, also is limited to improving rate of penetration; Simultaneously, most diamonds do not have the phenomenon of little embrittlement, do not possess sharping by oneself affect.
In sum,, can not satisfy the demand of current probing, so a kind of drilling efficiency of development is high, long service life and be the task of top priority of Geological Engineering subject to the good drill bit of lithology compliance because of there are many deficiencies in existing drill bit.
Summary of the invention
The manufacturing approach that the purpose of this invention is to provide a kind of hot pressing polymerization large stone bit makes its drill bit drilling efficiency of producing high, and long service life is good to the compliance of different rocks, thereby satisfies the higher demand in geology engineering discipline field.
The object of the invention is realized by following technical scheme:
A kind of manufacturing approach of hot pressing polymerization large stone bit, its main technique step is:
(1) raw material of selecting for use is the coarse gold hard rock of vacuum brazing method polymerization, on steel mould, gets out regular aperture of arranging according to design and requirement, and polymerization coarse gold hard rock is inserted in the aperture of steel mould; The carcass metal material powder that contains adhesive on covering again; On cold press, suppress, its pressure of colding pressing is 180～220MPa, and the dwell time is 5～8s; Can precast the fan-shaped cutting unit thin layer of drill bit of different size, its every bed thickness is 1.6～2.5mm;
(2) with the fan-shaped cutting unit thin layer of polymerization coarse gold hard rock; By external diameter from big pack graphite jig into to little stack successively in; Form the fan-shaped cutwork piece of a plurality of drill bits, each fan-shaped cutwork piece radially vertically is arranged in a combination along drill bit by 5～8 different layers of polymer coarse gold hard rock cutting unit thin layers of specification; After whole fan-shaped cutwork pieces had been assembled, the weld layer metal powder material of packing into pressed the drill steel matrix; Send into hot pressed sintering in the middle frequency furnace; Its hot pressing temperature is 960～970 ℃, and hot pressing pressure is 18～20MPa, and temperature retention time is 5～6min; Come out of the stove and be placed under the heat-retaining condition slow cooling and promptly accomplish the manufacturing of this drill bit to room temperature.
Contain the carcass metal material powder of adhesive in the said step (1), its weight percentages of components is: Ni accounts for 12%～16%, and Fe accounts for 28%～32%, and the Cu-Re alloy accounts for 32%～36%, and YG8 accounts for 12%～18%, and Mn accounts for 2%～4%.
The hardness of the carcass metal material powder in the said step (1) is HRC30～HRC35, and abrasion resistance is (0.36～0.42) * 10
-5ML.
The pressure of colding pressing in the said step (1) is 200MPa, and the dwell time is 5s.
Hot pressing temperature in the said step (2) is 960 ℃, and hot pressing pressure is 18MPa, and temperature retention time is 5min.
Tapping temperature after the hot pressing insulation in the said step (2) is 820 ℃.
The coarse gold hard rock of the vacuum brazing method polymerization of being selected for use in the said step (1), its particle diameter are 1.2～2.0mm.
Beneficial effect of the present invention:
Technology of the present invention is simpler, and operation is easier to, and it is good that its product creeps into performance, long service life.The structure of this product best embodies the basic principle of drill bit rotary drilling fractured rock; Can give full play to catalase cave effect; Thereby fractured rock efficient is high, so this structure drill bit helps improving the drilling efficiency and the conformability of raising drill bit to the rock stratum of drill bit.Drilling test show obtained to creep into timeliness higher by 22%～27% than common diamond bit, want high by 18～20% the application life of drill bit, this is characteristics and advantage that other common diamond bit does not have.This diamond bit can be used for geological prospecting, oil drilling, Science Drilling and engineering investigation, also can be used for the improvement of geological disaster simultaneously.
Description of drawings
Fig. 1 is the structural representation of cold moudling polymerization coarse gold hard rock cutting unit thin layer among the present invention and operation block; Wherein: (A) be polymerization coarse gold hard rock cutting unit thin layer; (B) the fan-shaped cutwork piece that is combined into for polymerization coarse gold hard rock cutting unit thin layer by the multilayer different size.
Fig. 2 is labial surface structural representation at the bottom of the hot pressing polymerization large stone bit;
Fig. 3 is the I-I sectional structure sketch map of Fig. 2.
In the above accompanying drawing, the corresponding relation of each label and component is:
1-soldering polymerization coarse gold hard rock; 2-plates the adamantine carcass metal material powder of polymerization coarse grain; 3-polymerization coarse gold hard rock cutting unit thin layer; The fan-shaped cutwork piece of drill bit that 4-is combined into by different size, multilayer polymeric coarse gold hard rock cutting unit thin layer; The 5-hot pressing polymerization large stone bit mouth of a river; 6-hot pressing polymerization large stone bit steel matrix; 7-hot pressing polymerization large stone bit weld layer metal powder material; The cutwork body that 8-is made up of each cutwork piece 4.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Consult Fig. 2, the present invention is an example to make φ 77/47mm specification drill bit, and its drill bit mouth of a river is 8, and promptly drill bit has 8 fan-shaped cutwork pieces 4 of polymerization coarse gold hard rock, and each fan-shaped cutwork piece is combined by 6 layers of cutting unit thin layer 3.And every layer of thick 1.6mm of cutting unit thin layer, the adamantine particle diameter of polymerization coarse grain of employing is 1.2mm.External diameter Radian compasses lattice size is according to the type of drill bit, specification and different, through calculating in it.
Hot pressing polymerization large stone bit manufacturing process:
With the coarse gold hard rock 1 of method for brazing polymerization according to the specification arranged distribution that designs in the hole of template; Sticking with glue paper then moves in the steel mould of colding pressing; A certain amount of carcass material powder 2 that contains adhesive evenly dispense in polymerization coarse gold hard rock 1 above, the moulding through the compacting of cold press promptly becomes bit cutting unit thin layer 3; At this moment, polymerization coarse gold hard rock 1 just is evenly distributed in this fan-shaped cutting unit thin layer 3 regularly.
Plating adamantine carcass powder 2 and proportioning in the cutting unit thin layer 3 is: nickel accounts for 14%, and iron accounts for 32%, and copper alloy accounts for 36%, and YG8 accounts for 15%, and manganese accounts for 3%.The pressure of colding pressing is 200MPa, pressurize 5s.
With specification different, in the graphite jig of vertically packing into after fan-shaped cutting unit thin layer 3 stacks in layer, constitute a fan-shaped cutwork piece 4 of drill bit.A drill bit (is example with φ 77/47mm specification drill bit) has 8 fan-shaped cutwork pieces.After treating that whole drill bit has been assembled, add weld layer metal powder material 7, press drill steel matrix 6, send in the middle frequency furnace hot-formingly, hot pressing parameters is: 960 ℃ of temperature, pressure 18MPa, temperature retention time 5min; Come out of the stove for 820 ℃.Drill bit after coming out of the stove places that slow cooling is to room temperature under the heat-retaining condition, and this drill bit is promptly made completion.
In the above-mentioned technology, because drill steel matrix 6 is a steel material, and cutwork piece 4 is diamantiferous alloy material, and these two kinds of materials are difficult for firmly connecting; The purpose that adds weld layer metal powder material 7 is can high strength to be welded as a whole whole cutwork body 8 with drill steel matrix 6; Simultaneously, weld layer can effectively improve the guarantor footpath effect of drill bit.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.If of the present invention these are revised the scope that belongs to basic design of the present invention or equivalent technologies with modification, then the present invention also should comprise these changes and modification interior.
If the content of not making detailed description is arranged, then belong to this area professional and technical personnel's technique known in this manual, repeat no more here.
Claims (7)
1. the manufacturing approach of a hot pressing polymerization large stone bit, it is characterized in that: the main technique step is:
(1) raw material of selecting for use is the coarse gold hard rock of vacuum brazing method polymerization; On steel mould, get out regular aperture of arranging according to design and requirement, polymerization coarse gold hard rock is inserted in the aperture of steel mould, cover the carcass metal material powder that contains adhesive again; On cold press, suppress; Its pressure of colding pressing is 180～220MPa, and the dwell time is 5～8s, can precast the fan-shaped cutting unit thin layer of polymerization coarse gold hard rock of different size;
(2) with the fan-shaped cutting unit thin layer of polymerization coarse gold hard rock; By external diameter from big pack graphite jig into to little stack successively in; Form the fan-shaped cutwork piece of drill bit, each fan-shaped cutwork piece radially vertically is arranged in a combination along drill bit by the different fan-shaped cutting unit thin layer of 5～8 layers of polymer coarse gold hard rocks of specification; After whole fan-shaped cutwork pieces had been assembled, the weld layer metal powder material of packing into pressed the drill steel matrix, sends into hot pressed sintering in the middle frequency furnace, and its hot pressing temperature is 960～970 ℃, and hot pressing pressure is 18～20MPa, and temperature retention time is 5～6min; Come out of the stove and be placed under the heat-retaining condition slow cooling and promptly accomplish the manufacturing of drill bit to room temperature.
2. the manufacturing approach of hot pressing polymerization large stone bit according to claim 1; It is characterized in that: the carcass metal material powder that contains adhesive in the said step (1); Its weight percentages of components is: Ni accounts for 12%～16%, and Fe accounts for 28%～32%, and the Cu-Re alloy accounts for 32%～36%; YG8 accounts for 12%～18%, and Mn accounts for 2%～4%.
3. the manufacturing approach of hot pressing polymerization large stone bit according to claim 1 and 2 is characterized in that: the hardness of the carcass metal material powder in the said step (1) is HRC30～HRC35, and abrasion resistance is (0.36～0.42) * 10
-5ML.
4. the manufacturing approach of hot pressing polymerization large stone bit according to claim 1 is characterized in that: the pressure of colding pressing in the said step (1) is 200MPa, and the dwell time is 5s.
5. the manufacturing approach of hot pressing polymerization large stone bit according to claim 1 is characterized in that: the hot pressing temperature in the said step (2) is 960 ℃, and hot pressing pressure is 18MPa, and temperature retention time is 5min.
6. the manufacturing approach of hot pressing polymerization large stone bit according to claim 1 is characterized in that: the tapping temperature after the hot pressing insulation in the said step (2) is 820 ℃.
7. the manufacturing approach of hot pressing polymerization large stone bit according to claim 1 is characterized in that: the coarse gold hard rock of the vacuum brazing method polymerization of being selected for use in the said step (1), its particle diameter are 1.2～2.0mm.
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| CN201110392614.5A CN102587838B (en) | 2011-12-01 | 2011-12-01 | Manufacturing method of hot-press polymerized coarse-grain diamond drill bit |
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| CN201110392614.5A CN102587838B (en) | 2011-12-01 | 2011-12-01 | Manufacturing method of hot-press polymerized coarse-grain diamond drill bit |
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| CN102587838A true CN102587838A (en) | 2012-07-18 |
| CN102587838B CN102587838B (en) | 2014-06-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767336A (en) * | 2012-07-24 | 2012-11-07 | 武汉万邦激光金刚石工具有限公司 | Manufacture method of hot-pressing ordered-arranged broken polycrystalline impregnated bits |
| CN108691509A (en) * | 2018-03-21 | 2018-10-23 | 武汉万邦激光金刚石工具股份有限公司 | Diamond bit and preparation method thereof for engineering investigation |
| CN114951660A (en) * | 2022-05-17 | 2022-08-30 | 中国地质大学（武汉） | Method for preparing diamond-impregnated wedge-shaped cutting teeth and embedding drill bit and application |
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| CN1478990A (en) * | 2003-07-10 | 2004-03-03 | 中国地质大学（武汉） | Diamond-hard alloy composite type coring bit and its manufacturing process |
| CN101591812A (en) * | 2009-06-02 | 2009-12-02 | 武汉万邦激光金刚石工具有限公司 | The manufacture craft of brazing diamond polycrystal and mould therefor thereof |
| CN101725324A (en) * | 2009-11-26 | 2010-06-09 | 中国地质大学（武汉） | Hot pressing diamond bit and manufacturing method thereof |
| US20100281782A1 (en) * | 2009-05-06 | 2010-11-11 | Keshavan Madapusi K | Methods of making and attaching tsp material for forming cutting elements, cutting elements having such tsp material and bits incorporating such cutting elements |
| CN102182405A (en) * | 2011-04-01 | 2011-09-14 | 龚宏伟 | Layered composite type diamond drill bit and manufacturing process thereof |
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2011
- 2011-12-01 CN CN201110392614.5A patent/CN102587838B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478990A (en) * | 2003-07-10 | 2004-03-03 | 中国地质大学（武汉） | Diamond-hard alloy composite type coring bit and its manufacturing process |
| US20100281782A1 (en) * | 2009-05-06 | 2010-11-11 | Keshavan Madapusi K | Methods of making and attaching tsp material for forming cutting elements, cutting elements having such tsp material and bits incorporating such cutting elements |
| CN101591812A (en) * | 2009-06-02 | 2009-12-02 | 武汉万邦激光金刚石工具有限公司 | The manufacture craft of brazing diamond polycrystal and mould therefor thereof |
| CN101725324A (en) * | 2009-11-26 | 2010-06-09 | 中国地质大学（武汉） | Hot pressing diamond bit and manufacturing method thereof |
| CN102182405A (en) * | 2011-04-01 | 2011-09-14 | 龚宏伟 | Layered composite type diamond drill bit and manufacturing process thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767336A (en) * | 2012-07-24 | 2012-11-07 | 武汉万邦激光金刚石工具有限公司 | Manufacture method of hot-pressing ordered-arranged broken polycrystalline impregnated bits |
| CN108691509A (en) * | 2018-03-21 | 2018-10-23 | 武汉万邦激光金刚石工具股份有限公司 | Diamond bit and preparation method thereof for engineering investigation |
| CN114951660A (en) * | 2022-05-17 | 2022-08-30 | 中国地质大学（武汉） | Method for preparing diamond-impregnated wedge-shaped cutting teeth and embedding drill bit and application |
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| CN102587838B (en) | 2014-06-04 |
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Address after: 280-8 No. 430056 Hubei city of Wuhan Province, Wuhan City Economic and Technological Development Zone Avenue Patentee after: Wuhan Wan Bang Laser Diamond Tools Co.,Ltd. Address before: 280-8 No. 430056 Hubei city of Wuhan Province, Wuhan City Economic and Technological Development Zone Avenue Patentee before: Wuhan Wan Bang Laser Diamond Tools Co.,Ltd. |
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