CN103522014B - Laser in combination welding heavy wall diamond drill machine method for making head - Google Patents
Laser in combination welding heavy wall diamond drill machine method for making head Download PDFInfo
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- CN103522014B CN103522014B CN201310481126.0A CN201310481126A CN103522014B CN 103522014 B CN103522014 B CN 103522014B CN 201310481126 A CN201310481126 A CN 201310481126A CN 103522014 B CN103522014 B CN 103522014B
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- diamond
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- steel tube
- bit
- thick walled
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 85
- 239000010432 diamond Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000003466 welding Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 238000005245 sintering Methods 0.000 claims abstract description 20
- 238000007731 hot pressing Methods 0.000 claims abstract description 12
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 10
- 238000003754 machining Methods 0.000 claims abstract description 8
- 238000005219 brazing Methods 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 9
- 238000007514 turning Methods 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000005470 impregnation Methods 0.000 abstract description 3
- 239000000843 powder Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 4
- 229910001573 adamantine Inorganic materials 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 208000002925 dental caries Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
Classifications
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/025—Connecting cutting edges or the like to tools; Attaching reinforcements to workpieces, e.g. wear-resisting zones to tableware
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
Abstract
The present invention discloses a kind of laser in combination welding heavy wall diamond drill machine method for making head, the technological process taked is the diamond bit embryo tooth adopting cold-press method to manufacture sandwich construction, hot pressing sintering method is adopted to manufacture shaping diamond bit tooth, adopt method for laser welding diamond bit tooth coaxial welding uniform for some circumference equal dividings in one end of thick walled steel tube, postwelding temper, adopt CO2 to fill silk and protect weldering or high frequency brazing method to strengthen the weld strength of diamond bit tooth and thick walled steel tube, postwelding temper, the machining of relative dimensions is carried out to thick walled steel tube and produces drill bit finished product.Compared with the sintering process such as existing intermediate-frequency hot-pressing sintering process, resistance hot pressing sintering method, pressureless impregnation method, the cost of sintering mold of the present invention can reduce by 60%, and energy consumption can reduce by 58%, and whole efficiency still can improve 50%; Compared with existing galvanoplastic, cost is recycled in the environmental protection can exempting heavy metal ion, or non-environmental-pollution problem.
Description
(1) technical field:
The present invention relates to the manufacture method of all kinds of geological prospecting, engineering exploration diamond bit, be specially a kind of laser in combination welding heavy wall diamond drill machine method for making head.
(2) background technology:
Heavy wall diamond bit is the one of diamond tool, its principal character is connected with diamond bit tooth in one end of thick walled steel tube, the other end is processed with screw thread and is connected with basket, and drill bit and basket are carved and got rock and realize creeping under the revolution torsion and axial compressive force effect of rig.
The manufacture method of existing diamond bit is based on intermediate-frequency hot-pressing sintering process, resistance hot pressing sintering method, pressureless impregnation method, galvanoplastic.
The technological process of described intermediate-frequency hot-pressing sintering process is: drill bit design, calculating powder and adamantine consumption---powder mixes with adamantine weighing---prepare the fuse of overall graphite jig, foundation ring,---the diamond powder weighing mixing is assembled in overall graphite jig, and------intermediate-frequency hot-pressing sintering---slowly cools---and exits graphite external mold mouth of a river block in incubator 12 hours for thick walled steel tube processing and the process of powder contact surface, fuse, mouth of a river block---heavy wall diamond bit finished product is processed.
Visible, the graphite jig cost of sintering process is high, electric energy consumption cost is also very high.
And high cost is recycled in the environmental protection that galvanoplastic Problems existing is heavy metal ion.
(3) summary of the invention:
For the weak point of existing manufacturing technology; the present invention proposes a kind of laser in combination welding heavy wall diamond drill machine method for making head; to solve the problem that heavy wall geological drill bit sintering process die cost is high, energy consumption is large, work efficiency is low, and high cost and problem of environmental pollution are recycled in the environmental protection of galvanoplastic heavy metal ion.
The laser in combination welding heavy wall diamond drill machine method for making head that can solve the problem, the technological process taked is:
1, cold-press method is adopted to manufacture the diamond bit embryo tooth of sandwich construction.
2, hot pressing sintering method is adopted to manufacture shaping diamond bit tooth.
3, method for laser welding is adopted diamond bit tooth coaxial welding uniform for some circumference equal dividings in one end of thick walled steel tube.
4, postwelding temper.
5, CO is adopted
2fill silk the weld strength protecting weldering or high frequency brazing method to strengthen diamond bit tooth and thick walled steel tube.
6, postwelding temper.
7, the machining of relative dimensions carried out to thick walled steel tube and produce drill bit finished product.
In heavy wall diamond bit series, the inner and outer diameter of serial thick walled steel tube is between 36mm ~ 400mm, and the heavy wall of same thick walled steel tube is between 8mm ~ 25mm.
Corresponding, the interior outer radius of series diamond bit tooth between 18mm ~ 200mm, inside and outside chord length between 10mm ~ 40mm, height between 8mm ~ 30mm, the inside and outside semidiameter of same diamond bit tooth between 8mm ~ 25mm, inside and outside chord length difference is between 3mm ~ 15mm.
Described diamond bit tooth adopts three layered material structures radially, the diamond consumption of layered material in the diamond consumption > bit teeth of the outer layered material of diamond consumption > bit teeth of bit teeth middle material.
The technological parameter of described laser weld: weld Shen Du≤7mm, bonding power is selected between 1KW ~ 2.3KW, incidence angle < 5 °, spot diameter is between ￠ 0.15mm ~ ￠ 0.25mm, laser focal is between 170mm ~ 173mm, and in facula deviation amount, bit teeth and steel body are between 5.5:4.5 ~ 6.5:3.5; During welding, thick walled steel tube turning spur speed is between 0.6 m/min ~ 2 ms/min.
Described CO
2the technological parameter that the protection that fills silk is welded: gage of wire is between ￠ 0.8mm ~ ￠ 1.2mm, and welding current is selected between 50A ~ 280A, and during welding, the turning spur speed of thick walled steel tube is between 6 ms/min ~ 9 ms/min.
The technological parameter of described high frequency brazing: silver soldering sheet thickness is between 0.2mm ~ 0.6mm, and welding temperature is between 650 DEG C ~ 750 DEG C, and the power selection of single diamond bit tooth heating is between 5KW ~ 10KW, and temperature retention time is between 5 seconds ~ 10 seconds.
Advantage of the present invention:
1, compared with the sintering process such as laser in combination of the present invention welding heavy wall diamond drill machine method for making head and existing intermediate-frequency hot-pressing sintering process, resistance hot pressing sintering method, pressureless impregnation method, the cost of sintering mold can reduce by 60%, energy consumption can reduce by 58%, and whole efficiency still can improve 50%; Compared with existing galvanoplastic, cost is recycled in the environmental protection can exempting heavy metal ion, or non-environmental-pollution problem.
2, the present invention is geological prospecting, engineering exploration diamond bit provides the manufacture method of a kind of environmental protection, efficient, energy-conservation, low cost.
(4) accompanying drawing illustrates:
Fig. 1 (a) is the structural representation of the heavy wall diamond bit with manufacture method manufacture of the present invention.
A-A sectional view in Fig. 1 (b) Fig. 1 (a).
Fig. 2 is that in manufacturing process flow of the present invention, diamond bit embryo is laughed somebody to scorn pressure schematic diagram.
Fig. 3 is diamond bit tooth hot pressed sintering schematic diagram in manufacturing process flow of the present invention.
Fig. 4 is the structural representation of Fig. 1 medium thickness pipe.
Fig. 5 (a) is the structural representation of laser weld stationary fixture in manufacturing process flow of the present invention.
Fig. 5 (b) is for boring the structural representation of tooth equal dividing and positioning mould in Fig. 5 (a).
Fig. 6 is CO in manufacturing process flow of the present invention
2fill silk and protect the structural representation of weldering stationary fixture.
Figure number identifies: 1, diamond bit tooth; 2, thick walled steel tube; 3, side form; 4, backing plate; 5, internal diameter pressure head; 6, layered material in bit teeth; 7, bit teeth middle material; 8, the outer layered material of bit teeth; 9, external diameter pressure head; 10, recessed dividing plate; 11, inclined clapboard; 12, median septum; 13, pressing plate is sintered; 14, strong magnets; 15, pressing plate is welded; 16, tooth equal dividing and positioning mould is bored; 17, bit teeth is gone out sword positioning module; 18, scroll chuck; 19, bore tooth and be welded and fixed mould; 20, thimble.
(5) detailed description of the invention:
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
The technological process of laser in combination welding heavy wall diamond drill machine method for making head of the present invention is: (preparation is before drill bit design to the diamond bit embryo tooth of employing cold-press method manufacture sandwich construction, calculate powder and adamantine consumption, powder mixes with adamantine weighing)---adopt hot pressing sintering method to manufacture shaping diamond bit tooth 1 and---adopt method for laser welding that diamond bit tooth 1 coaxial welding uniform for some circumference equal dividings is adopted CO in one end---postwelding temper---of thick walled steel tube 2
2the protection that fills silk is welded or high frequency brazing method reinforcement diamond bit tooth 1 carries out the machining of relative dimensions to thick walled steel tube with the weld strength---postwelding temper---of thick walled steel tube 2 and produces drill bit finished product.
Diamond bit finished product after machining as shown in Figure 1.
Each technological process detailed annotation:
1, to cold pressing the making of diamond bit embryo tooth.
Manufacture with the bit teeth cold stamping die (tool steel) shown in Fig. 2: surround die cavity with left and right side form 3 and forward and backward dividing plate, pave side form 3 and dividing plate with backing plate 4, allow the internal diameter pressure head 5 of bottom expose; In the die cavity of internal diameter pressure head 5 end, pour layered material 6 in the bit teeth weighing up weight into and shakeout, pour the bit teeth middle material 7 that weighs up weight again into and shakeout, finally pour the outer layered material 8 of the bit teeth weighing up weight into and shakeout, the diamond consumption of layered material 6 in the diamond consumption > bit teeth of the outer layered material 8 of diamond consumption > bit teeth of bit teeth middle material 7, the external diameter pressure head 9 at top is put into die cavity and is corresponded to the outer layered material 8 of bit teeth; Tighten side form 3 and dividing plate with screw rod, mould is taken and forcing press flattens internal diameter pressure head 5 and external diameter pressure head 9 and pressurize 5 second, take out mould, turn on screw rod, unclamp side form 3 and dividing plate, take out the single diamond bit embryo tooth of cold moudling.
Repeat said process, until several diamond bit embryo teeth of needs of having colded pressing.
2, the making of sintered diamond bit teeth 1.
Manufacture with the bit teeth hot pressed sintering mould (separate type high strength graphite) shown in Fig. 3: surround die cavity (totally 8 die cavitys by recessed dividing plate 10 and two pieces of inclined clapboards 11 and median septum 12, ), recessed dividing plate 10 is paved with cushion block, inclined clapboard 11, median septum 12, push-down head is allowed to expose head, diamond bit embryo tooth is put into successively in 8 cavitys, put into pressure head successively again, put into diamond bit embryo tooth again successively, finally put into seaming chuck successively, last screw rod is tightened sintering pressing plate 13 and is locked die cavity, take in vacuum resistance furnace, by being warmed up to 870 DEG C of insulations 5 minutes, dwell pressure 220 ㎏/CM
2, vacuum-0.08MPa technique sinter out the finished product of diamond bit tooth 1.
3, the making of thick walled steel tube 2.
Machining process processes the preferred 45# steel of thick walled steel tube 2(shown in Fig. 4 routinely).
4, on thick walled steel tube 2, laser weld diamond bit tooth 1 is used.With laser weld stationary fixture (being 45# steel entirely) the fixing tipped drill tooth shown in Fig. 5 (a), Fig. 5 (b).First strong magnets 14 horizontal positioned, strong magnets 14 places welding pressing plate 15 above, welding pressing plate 15 is placed above and is bored tooth equal dividing and positioning mould 16, diamond bit tooth 1 finished product (the solder side handled well upward) is put in the die cavity (circumference uniform distribution 8 decile) boring tooth equal dividing and positioning mould 16, bit teeth nose end in sword positioning module 17 of going out is entangled the cylindrical that 8 diamond bit teeth 1 form down, the solder side of thick walled steel tube 2 is vertically put into bit teeth down to go out sword positioning module 17, tensioning on the scroll chuck 18 finally a whole set of fixture level fixed being taken laser-beam welding machine, bit teeth being gone out, sword positioning module 17 is axial slips off the faying face exposing thick walled steel tube 2 and diamond bit tooth 1 again, by following welding condition, diamond bit tooth 1 and thick walled steel tube 2 are welded together: bonding power is 1.5KW, incidence angle is 3.5 °, spot diameter is ￠ 0.2mm, laser focal is 172mm, in facula deviation amount, bit teeth and steel body are 6:4, thick walled steel tube 2 turning spur speed is 0.8 m/min.
The drill blank welded is incubated 240 DEG C in an oven, is incubated and cools with stove after 3 hours.
5, CO
2weld strength is strengthened in the protection weldering that fills silk
With the CO shown in Fig. 6
2protection weldering stationary fixture (45# steel) that fills silk is fixed on the thick walled steel tube 2 of drill blank on the scroll chuck 18 of lathe, brill tooth is welded and fixed mould 19 and is enclosed within the internal-and external diameter of the diamond bit tooth 1 weld, then withstands brill tooth with the thimble 20 of lathe and be welded and fixed mould 19; CO
2the plumb joint that the protection that fills silk is welded aims at the soldered (processing in the making of thick walled steel tube 2) between thick walled steel tube 2 and diamond bit tooth 1, by following CO
2fill silk protection welding parameter, and diamond bit tooth 1 and thick walled steel tube 2 are welded: gage of wire selects ￠ 0.8mm, and welding current is chosen as 65A, during welding, the turning spur speed of thick walled steel tube 2 is 8 ms/min.
The drill blank welded is put in baking oven and is incubated 270 DEG C, is incubated and cools with stove after 3 hours.
6, finished product processing.
The drill blank cooled routinely machining process process the heavy wall drill bit finished product (comprising the screw thread process that thick walled steel tube 2 other end is connected with basket) shown in Fig. 1 (a), Fig. 1 (b), produce a complete heavy wall diamond bit.
The area of bed of diamond drill machine described in the present invention can require different according to processing object, or tool work condition is different and adopt different size design.
In heavy wall diamond bit series of the present invention:
The inner and outer diameter of series thick walled steel tube 2 is 36mm ~ 400mm, and the heavy wall of same thick walled steel tube 2 is 8mm ~ 25mm.
Corresponding, the interior outer radius of serial diamond bit tooth 1 is 18mm ~ 200mm, inside and outside chord length is 10mm ~ 40mm, highly for 8mm ~ 30mm, the inside and outside semidiameter of same diamond bit tooth 1 is 8mm ~ 25mm, inside and outside chord length difference is 3mm ~ 15mm.
Claims (6)
1. laser in combination welding heavy wall diamond drill machine method for making head, the technological process taked is followed successively by the diamond bit embryo tooth adopting cold-press method to manufacture sandwich construction, hot pressing sintering method is adopted to manufacture shaping diamond bit tooth (1), adopt method for laser welding diamond bit tooth (1) coaxial welding uniform for some circumference equal dividings one end in thick walled steel tube (2), postwelding temper, adopts CO
2fill silk the weld strength protecting weldering or high frequency brazing method to strengthen diamond bit tooth (1) and thick walled steel tube (2); postwelding temper; the machining of relative dimensions is carried out to thick walled steel tube (2) and produces drill bit finished product; it is characterized in that adopting laser weld stationary fixture to fix tipped drill tooth (1), its welding step is:
1., strong magnets (14) horizontal positioned;
2., strong magnets (14) places welding pressing plate (15) above;
3., weld pressing plate (15) and place brill tooth equal dividing and positioning mould (16) above;
4., in the die cavity boring tooth equal dividing and positioning mould (16) circumference uniform distribution diamond bit tooth (1) finished product is put into, the solder side handled well upward;
5., the go out interior nose end of sword positioning module (17) of bit teeth is entangled the cylindrical that diamond bit tooth (1) forms down;
6., the solder side of thick walled steel tube (2) is vertically put into bit teeth down to go out sword positioning module (17);
7., a whole set of fixture level fixed take the upper tensioning of scroll chuck (18) of laser-beam welding machine, then bit teeth sword positioning module (17) of going out axially is sliped off the faying face exposing thick walled steel tube (2) and diamond bit tooth (1);
8., by the saturating Shen Du≤7mm of weldering, bonding power is 1KW ~ 2.3KW, incidence angle < 5 °, spot diameter is ￠ 0.15mm ~ ￠ 0.25mm, laser focal is 170mm ~ 173mm, in facula deviation amount, bit teeth and steel body are 5.5:4.5 ~ 6.5:3.5, and thick walled steel tube (2) turning spur speed is that the welding condition of 0.6 m/min ~ 2 ms/min welds together diamond bit tooth (1) and thick walled steel tube (2);
The machining of thick walled steel tube (2) being carried out to relative dimensions comprises the screw thread process be connected with basket thick walled steel tube (2) other end.
2. laser in combination welding heavy wall diamond drill machine method for making head according to claim 1, it is characterized in that: the inner and outer diameter of serial thick walled steel tube (2) is 36mm ~ 400mm, the heavy wall of same thick walled steel tube (2) is 8mm ~ 25mm.
3. laser in combination welding heavy wall diamond drill machine method for making head according to claim 2, it is characterized in that: the interior outer radius of serial diamond bit tooth (1) is 18mm ~ 200mm, inside and outside chord length is 10mm ~ 40mm, highly for 8mm ~ 30mm, the inside and outside semidiameter of same diamond bit tooth (1) is 8mm ~ 25mm, inside and outside chord length difference is 3mm ~ 15mm.
4. according to the laser in combination welding heavy wall diamond drill machine method for making head in claims 1 to 3 described in any one, it is characterized in that: described diamond bit tooth (1) for radially interior, in, outer three layered material structures, the diamond consumption of layered material (6) in the diamond consumption > bit teeth of the outer layered material (8) of the diamond consumption > bit teeth of bit teeth middle material (7).
5., according to the laser in combination welding heavy wall diamond drill machine method for making head in claims 1 to 3 described in any one, it is characterized in that: described CO
2the gage of wire that the protection that fills silk is welded is ￠ 0.8mm ~ ￠ 1.2mm, and welding current is 50A ~ 280A, and during welding, the turning spur speed of thick walled steel tube (2) is 6 ms/min ~ 9 ms/min.
6. according to the laser in combination welding heavy wall diamond drill machine method for making head in claims 1 to 3 described in any one, it is characterized in that: the silver soldering sheet thickness of described high frequency brazing is 0.2mm ~ 0.6mm, welding temperature is 650 DEG C ~ 750 DEG C, the power that single diamond bit tooth (1) is heated is 5KW ~ 10KW, and temperature retention time is 5 seconds ~ 10 seconds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481126.0A CN103522014B (en) | 2013-10-15 | 2013-10-15 | Laser in combination welding heavy wall diamond drill machine method for making head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310481126.0A CN103522014B (en) | 2013-10-15 | 2013-10-15 | Laser in combination welding heavy wall diamond drill machine method for making head |
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| CN103522014A CN103522014A (en) | 2014-01-22 |
| CN103522014B true CN103522014B (en) | 2015-09-09 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103953286B (en) * | 2014-05-19 | 2017-05-10 | 中国有色桂林矿产地质研究院有限公司 | Welded high-matrix diamond core bit and manufacturing method thereof |
| CN105018780B (en) * | 2015-07-21 | 2017-01-25 | 吉林大学 | Hard-phase-free matrix formula and manufacturing method for diamond-impregnated bit |
| CN105545214B (en) * | 2016-02-03 | 2017-11-03 | 中国有色桂林矿产地质研究院有限公司 | Major-minor bottom spray type laser welding diamond bit and its manufacture method |
| 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 |
| CN106903488B (en) * | 2017-04-15 | 2018-10-09 | 肖功豪 | A kind of preparation method of geological drill bit |
| CN110202700A (en) * | 2019-07-08 | 2019-09-06 | 江苏金元素超硬材料有限公司 | A kind of grooved bit and its laser welding tooling |
| CN112828437B (en) * | 2020-12-30 | 2022-07-12 | 北京探矿工程研究所 | High-frequency welding die for diamond drill bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2700044Y (en) * | 2003-05-19 | 2005-05-18 | 任京建 | Thin wall diamond drill bit with profiled tooth |
| CN1923442A (en) * | 2005-08-29 | 2007-03-07 | 刘青 | Diamond knife head manufacturing technique |
| KR100968930B1 (en) * | 2008-05-29 | 2010-07-14 | 가부시키 가이샤 미야나가 | Diamond Core Drill |
| CN101758361B (en) * | 2009-12-15 | 2012-05-09 | 华南师范大学 | Method for repairing U-shaped metal thin-wall pipe by applying laser and micro-arc spark composite technology |
| CN102581587A (en) * | 2011-01-17 | 2012-07-18 | 肖云捷 | Method for manufacturing high-efficiency diamond geological drills |
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