CN102182405A - Layered composite type diamond drill bit and manufacturing process thereof - Google Patents
Layered composite type diamond drill bit and manufacturing process thereof Download PDFInfo
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- CN102182405A CN102182405A CN2011100880099A CN201110088009A CN102182405A CN 102182405 A CN102182405 A CN 102182405A CN 2011100880099 A CN2011100880099 A CN 2011100880099A CN 201110088009 A CN201110088009 A CN 201110088009A CN 102182405 A CN102182405 A CN 102182405A
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Abstract
The invention discloses a layered composite type diamond drill bit and a manufacturing process thereof. The layered composite type diamond drill bit comprises fan-shaped working blocks, wherein water gaps are formed among the fan-shaped working blocks; the fan-shaped working blocks are in a layered composite type, comprise diamond working layers and non-diamond working layers and are formed by alternately combining the diamond working layers and the non-diamond working layers; and the diamond working layers and the non-diamond working layers are multi-layer. The manufacturing process of the layered composite type diamond drill bit comprises the following steps of: carrying out cold press moulding on the fan-shaped working blocks of the drill bit by using a steel mould; assembling the fan-shaped working blocks which are formed by cold press moulding into a graphite mould; and carrying out hot press moulding on the fan-shaped working blocks to manufacture the diamond drill bit. The invention has the advantages that: the applicability of rock stratums is improved greatly; good drilling effects can be achieved in most common rocks; meanwhile, a drilling speed can be improved by 20 to 25 percent; the service life of the drill bit can be prolonged by 10 to 15 percent; and about 15 percent of drilling cost per metre is reduced. The invention is characterized by high rock applicability, long service life and low cost.
Description
Technical field
The present invention relates to a kind of layering composite diamond drill bit and manufacturing process thereof, diamond bit is widely used in the improvement of prospecting of Foundation Designs such as geological prospecting, oil drilling and water conservancy and hydropower and geological disaster.
Background technology
Enter 21 century, geological prospecting of China and deep prospecting workload increase sharply, the diamond bit boring tool that is absolutely necessary, and also its consumption is very big.Yet the rock in the earth's crust is of a great variety, and its performance is ever-changing; Wish that drill bit is stronger to the adaptive capacity of rock stratum in the probing practice, can not change because of rock stratum kind and character that the drill bit that will change another kind of performance at once creeps into, this not only influences the process of drilling operation, and obviously improves drilling cost.And its structure of present diamond bit comprises fan-shaped operation block, be provided with the mouth of a river between the fan-shaped operation block, its structure of fan-shaped operation block is a single structure, adaptive capacity to the rock stratum is not strong, the working lining of common drill bit is a homogeneous pattern, diamond being evenly distributed in whole working lining, in the drilling process because drill bit stressed and wearing and tearing are inequality, must cause the working lining wearing and tearing inhomogeneous, the result of use of drill bit is subjected to obvious influence.
Summary of the invention
Its purpose of the present invention just is to provide a kind of layering composite diamond drill bit and manufacturing process thereof, and the compliance of rock stratum is improved the drilling effect that all can obtain greatly in common most rocks.Simultaneously, rate of penetration can improve 20%～25%, and can improve 10%～15% the application life of drill bit, and every meter drilling cost has descended about about 15%.Have that the rock stratum conformability is strong, long service life and the low characteristics of cost.
The technical scheme that realizes above-mentioned purpose and take,
Comprise fan-shaped operation block, be provided with the mouth of a river between the fan-shaped operation block, described fan-shaped operation block is that layering is compound, comprises diamond working layers and non-diamond layer, described diamond working layers and non-diamond layer alternate combinations form, and described diamond working layers and non-diamond layer are multilayer.
Its manufacturing process comprises postforming grade, with described multi-layer diamond working lining and non-diamond layer alternately, in the alternate punching block of packing into, cold moudling precasts the fan-shaped operation block of drill bit; The fan-shaped operation block that will precast again is assembled in the graphite jig, and is hot-forming by middle frequency furnace, makes diamond bit.
Compared with prior art, beneficial effect of the present invention is,
Owing to adopted the structure design of multi-layer diamond working lining and non-diamond layer and colded pressing accordingly and hot press forming technology, thereby the compliance of rock stratum has been improved greatly the drilling effect that in common most rocks, all can obtain.Simultaneously, rate of penetration can improve 20%～25%, and can improve 10%～15% the application life of drill bit, and every meter drilling cost has descended about about 15%.Have that the rock stratum conformability is strong, long service life and the low characteristics of cost.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is this apparatus structure schematic diagram;
Fig. 2 is the structural representation of fan-shaped operation block in this device;
Fig. 3 is non-diamond layer structural representation in this device;
Fig. 4 is diamond layer structural representation in this device.
The specific embodiment
Comprise fan-shaped operation block, be provided with the mouth of a river 1 between the fan-shaped operation block, as shown in Figure 1, described fan-shaped operation block is that layering is compound, comprise diamond working layers 3 and non-diamond layer 2, described diamond working layers 3 and non-diamond layer 2 alternate combinations form, and described diamond working layers 3 and non-diamond layer 2 are multilayer.
The layer of described diamond working layers 3 is wide to be that internal layer and skin are 2.0～3.2mm, and the middle part is wide layer by layer to be 2.0mm; The layer of described non-diamond layer 2 is wide to be 1.2mm or 1.5mm.
Described diamond working layers 3 accounts for 75%～80% of drill bit working lining, and non-diamond layer 2 accounts for 25%～20% of drill bit working lining.
Its manufacturing process comprises postforming grade, with described multi-layer diamond working lining 3 and non-diamond layer 2 alternately, in the alternate punching block of packing into, cold moudling precasts the fan-shaped operation block of drill bit; The fan-shaped operation block that will precast again is assembled in the graphite jig, and is hot-forming by middle frequency furnace, makes diamond bit.
Described cold pressing forming process technical data is: pressure 200MPa～250MPa, stablize 3～5s; Described hot press forming technology technical data is: 940 ℃ of temperature, and pressure 16MPa, temperature retention time 5min, the drill bit tapping temperature is 820 ℃.
Embodiment
1, the structure of drill bit
The compound hot pressing diamond bit of layering is characterised in that: drill bit working lining do as one likes can combine with different multi-layer diamond working lining and the non-diamond layer of specification.
The layer of diamond working layers is wide: internal layer and outer field be 2.0～3.2mm, common specification drill bit adopts 2.0～2.5mm, the wire line coring drill bit adopts 2.5～3.2mm.The wide 2.0mm that all adopts of layer at position placed in the middle.See shown in Figure 4.
The layer of non-diamond layer is wide: adopt 1.2mm or 1.5mm.For the big rock of fragility, adopt 1.2mm; And be the main brittle rock of moulding for plasticity, adopt 1.5mm.See shown in Figure 3.
2, process of drill bit manufacture
Cold pressing forming process is: adopt 100T hydraulic press and tool steel mould.Pressure 200MPa～the 250MPa that colds pressing stablizes 5s.
Hot press forming technology: adopt the automatic sintering of intelligent middle frequency furnace.
940 ℃ of whole Wen Wendu, programming rate: before 600 ℃, adopt 80 ℃/min, adopt 120 ℃/min to rise to design temperature after 600 ℃, insulation 1min in the time of 820 ℃.
First pressing is set at 2～3MPa, and final pressure is set at 16MPa.
When temperature rises to the whole temperature of setting, begin insulation, temperature retention time is set 5min; Pressure rises to the final pressure of setting behind the insulation 1min.
The drill bit tapping temperature is made as 820 ℃.When temperature retention time to promptly stop the insulation, pressure still is in packing state; The release that has a power failure when furnace temperature is reduced to tapping temperature, drill bit is come out of the stove.
3, characteristics
1. the drill bit working lining is contained diamond layer and is not contained diamond layer by multilayer and forms, and is spaced from each other;
2. contain the wide 2.0mm～3.2mm of being of diamond working layers, can be according to the different preferred working lining width of bite type with the rock kind;
3. do not contain two kinds of wide 1.2mm of being of diamond layer and 1.5mm, according to rock kind different choice;
4. adopt punching block elder generation cold moudling composite bed working cell, a plurality of composite beds working cell is assembled in is hot pressed into diamond bit in the graphite jig then;
5. can adjust the width of each layer at rock kind and character, make it the drilling effect that reaches best.
This device is designed a kind of layering composite diamond drill bit from improving the conformability of hot pressing diamond bit to the rock stratum.In the working lining of drill bit by multi-layer diamond layer and multilayer non-diamond layer alternately-alternate combination and constitute the working lining of drill bit.Diamond working layers is the main body of drill bit fractured rock, accounts for 75%～80% of drill bit working lining; But not diamond layer accounts for 25%～20% of drill bit working lining, direct fractured rock, but utilize broken cave effect, fractured rock under the axial and radial vibration effect of drill bit, rock dust under broken is thicker, help the wearing and tearing carcass of drill bit makes diamond to keep and good go out sword and improve drilling efficiency, improves the compliance to the rock stratum.
Hence one can see that, the drill bit of identical diamond content, and the height of its working lining improves 20%～25% approximately, helps improving the application life of drill bit; If the drill bit of identical working lining height, then adamantine content reduces by 20%～25% approximately, has equaled to reduce the cost about about 20% of drill bit.
Is example with wire line coring drill bit φ 77/ φ 49mm drill bit with the rock that creeps into drillability VII～IX level, medium abrasive:
The working lining of drill bit can be designed to 4 layers, and external diameter is two-layer in the close drill bit, and its width is 3.2mm; The middle two-layer 2.0mm that is designed to; And do not contain the wide 1.2mm of being designed to of diamond layer.Like this, drill bit combines by 7 layers altogether, sees shown in Figure 1.
(2) process of drill bit manufacture design:
With the wire line coring process of drill bit manufacture that creeps into drillability VII～IX level, medium abrasive rock is example:
The cold pressing forming process of drill bit design: every mould 10 fan-shaped working cells of colding pressing, the about 20cm of its area
2, adopting the 200MPa moulding, its gross pressure is 40T, pressurize 5s, the release demoulding, 10 fan-shaped working cells are moulding, and are standby.
The heat pressing process design of drill bit:
The fan-shaped working cell of the cold moudling requirement according to drill bit is assembled in the graphite jig, sends into hot pressed sintering in the middle frequency furnace.
940 ℃ of the whole Wen Wendu of hot pressing, programming rate: before 600 ℃, adopt 80 ℃/min, adopt 120 ℃/min to rise to design temperature after 600 ℃, insulation 1min in the time of 800 ℃.
First pressing is set at 3MPa, and final pressure is set at 16MPa.
When temperature rises to the whole temperature of setting, begin insulation, temperature retention time is set 5min; Pressure progressively rises to the final pressure 43kN of setting (drill bit is subjected to the about 27cm of the area of hot pressing behind the insulation 1min
2, the pressure of employing 16MPa draws final pressure and is about 43kN).
The drill bit tapping temperature is made as 820 ℃.When temperature retention time to promptly stop the insulation, pressure still is in packing state; The release that when furnace temperature is reduced to tapping temperature, has a power failure, drill bit is come out of the stove, come out of the stove the back under heat-retaining condition slow cooling to room temperature.
Claims (5)
1. layering composite diamond drill bit, comprise fan-shaped operation block, be provided with the mouth of a river (1) between the fan-shaped operation block, it is characterized in that, described fan-shaped operation block is that layering is compound, comprise diamond working layers (3) and non-diamond layer (2), described diamond working layers (3) and non-diamond layer (2) alternate combinations form, and described diamond working layers (3) and non-diamond layer (2) are multilayer.
2. the described a kind of layering composite diamond drill bit of root a tree name claim 1 is characterized in that, the layer of described diamond working layers (3) is wide to be that internal layer and skin are 2.0～3.2mm, and the middle part is wide layer by layer to be 2.0mm; The layer of described non-diamond layer (2) is wide to be 1.2mm or 1.5mm.
3. the described a kind of layering composite diamond drill bit of root a tree name claim 1 is characterized in that described diamond working layers (3) accounts for 75%～80% of drill bit working lining, and non-diamond layer (2) accounts for 25%～20% of drill bit working lining.
4. the manufacturing process of the described a kind of layering composite diamond drill bit of root a tree name claim 1, comprise postforming grade, it is characterized in that, with described multi-layer diamond working lining (3) and non-diamond layer (2) alternately, in the alternate punching block of packing into, cold moudling precasts the fan-shaped operation block of drill bit; The fan-shaped operation block that will precast again is assembled in the graphite jig, and is hot-forming by middle frequency furnace, makes diamond bit.
5. the manufacturing process of the described a kind of layering composite diamond drill bit of root a tree name claim 3 is characterized in that, described cold pressing forming process technical data is: pressure 200MPa～250MPa, stablize 3～5s; Described hot press forming technology technical data is: 940 ℃ of temperature, and pressure 16MPa, temperature retention time 5min, the drill bit tapping temperature is 820 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100880099A CN102182405A (en) | 2011-04-01 | 2011-04-01 | Layered composite type diamond drill bit and manufacturing process thereof |
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| CN2011100880099A CN102182405A (en) | 2011-04-01 | 2011-04-01 | Layered composite type diamond drill bit and manufacturing process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587838A (en) * | 2011-12-01 | 2012-07-18 | 武汉万邦激光金刚石工具有限公司 | Manufacturing method of hot-press polymerized coarse-grain diamond drill bit |
| CN107107223A (en) * | 2014-12-22 | 2017-08-29 | 喜利得股份公司 | Method for the jumping through rings body of the closing that makes coring bit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086086A2 (en) * | 1982-02-05 | 1983-08-17 | Boart International Limited | Cutting device, a tool including a cutting device and a method of making a cutting device |
| US4499959A (en) * | 1983-03-14 | 1985-02-19 | Christensen, Inc. | Tooth configuration for an earth boring bit |
| JPS62174492A (en) * | 1986-01-27 | 1987-07-31 | カザフスキ−、ポリチェフニチェスキ−、インスチツ−ト、イメ−ニ、ベ−、イ−、レ−ニナ | Diamond drill bit |
| RU2007542C1 (en) * | 1991-06-05 | 1994-02-15 | Чихоткин Виктор Федорович | Diamond drill bit |
| CN2580088Y (en) * | 2002-10-24 | 2003-10-15 | 刘碧湘 | Layered cast diomand bit |
| CN1730897A (en) * | 2005-09-02 | 2006-02-08 | 湖南飞碟新材料有限责任公司 | Geological bit and its manufacturing method |
-
2011
- 2011-04-01 CN CN2011100880099A patent/CN102182405A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086086A2 (en) * | 1982-02-05 | 1983-08-17 | Boart International Limited | Cutting device, a tool including a cutting device and a method of making a cutting device |
| US4499959A (en) * | 1983-03-14 | 1985-02-19 | Christensen, Inc. | Tooth configuration for an earth boring bit |
| JPS62174492A (en) * | 1986-01-27 | 1987-07-31 | カザフスキ−、ポリチェフニチェスキ−、インスチツ−ト、イメ−ニ、ベ−、イ−、レ−ニナ | Diamond drill bit |
| RU2007542C1 (en) * | 1991-06-05 | 1994-02-15 | Чихоткин Виктор Федорович | Diamond drill bit |
| CN2580088Y (en) * | 2002-10-24 | 2003-10-15 | 刘碧湘 | Layered cast diomand bit |
| CN1730897A (en) * | 2005-09-02 | 2006-02-08 | 湖南飞碟新材料有限责任公司 | Geological bit and its manufacturing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587838A (en) * | 2011-12-01 | 2012-07-18 | 武汉万邦激光金刚石工具有限公司 | Manufacturing method of hot-press polymerized coarse-grain diamond drill bit |
| CN102587838B (en) * | 2011-12-01 | 2014-06-04 | 武汉万邦激光金刚石工具有限公司 | Manufacturing method of hot-press polymerized coarse-grain diamond drill bit |
| CN107107223A (en) * | 2014-12-22 | 2017-08-29 | 喜利得股份公司 | Method for the jumping through rings body of the closing that makes coring bit |
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Application publication date: 20110914 |