CN110374516A - A kind of diamond compact and its 3D printing method - Google Patents
A kind of diamond compact and its 3D printing method Download PDFInfo
- Publication number
- CN110374516A CN110374516A CN201910555189.3A CN201910555189A CN110374516A CN 110374516 A CN110374516 A CN 110374516A CN 201910555189 A CN201910555189 A CN 201910555189A CN 110374516 A CN110374516 A CN 110374516A
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- CN
- China
- Prior art keywords
- diamond
- diamond compact
- compact
- printing
- printing method
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- 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
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The present invention provides a kind of 3D printing methods of diamond compact, comprising steps of selecting basis material of the chrome molybdenum as diamond compact, are processed into diamond compact substrate；Prepare nanoscale monocrystalline diamond powder；Diamond dust Flashmelt is set on the diamond compact substrate using hot-working method, prepares diamond compact layer；Using Cold-forming process by between the point of the diamond compact layer prepared, between line, the atom phase counterdiffusion of interlayer, re-melt solidification；Above-mentioned hot-working and cold working are repeated, the cold alternating of heat prepares diamond compact.The present invention is using the cold 3D printing alternately processed of heat, between point, between line, the nano-diamond particle moment phase counterdiffusion of interlayer, the thermal stress for being bonded to diamond and generating without heat transfer concentrates caused defect, there is no need to add metal Co as Binder Phase, there is high abrasion, high heat resistance, high-impact, the good characteristic of high life using the diamond compact that the present invention prints.
Description
Technical field
The present invention relates to 3D printing fields, more specifically, are related to a kind of diamond compact and its 3D printing method.
Background technique
The drill bit that the diamond compact of various patterns is combined with gear wheel and wing has been used to exploit oil gas field.Work as diamond
When composite sheet has high abrasion, high heat resistance, high-impact and high life performance, this drill bit can also be used to high-efficiency mining shale gas
With uranium ore.It is of great significance so developing high abrasion, high heat resistance, high-impact and the diamond compact of high life.
Currently, being all used as adhesive, the thermal expansion of Co using metallic cobalt (Co) in the world when manufacturing diamond compact
The thermal expansion coefficient of coefficient ratio diamond particles is big, and at 700~760 DEG C, the expansion meeting of Co is so that between diamond particles
Bonding separates, the wearability of serious reduction diamond, so generalling use acid corrosion method used makes Co between diamond particles
It is precipitated, corrosion depth can restore the resistance to of diamond up to 0.1~0.5mm or so, this de- Co method to a certain extent
Mill property, but its meeting therefore reduces the Mechanical Structure Strength of diamond compact, institute so that diamond layer appearance is more porous
Diamond ring must be added in diamond outer ring, to improve its intensity.In short, the increase Co of current diamond compact
The preparation method of Binder Phase limits the high wearable and high impact properties of diamond compact.
The drill bit combined by diamond compact with gear wheel and wing can generate high temperature when creeping into cutting, make diamond
Surface oxidation and be carbonized, reduce the wearability of diamond compact, this thermal stress corrosion can make diamond compact surface
It cracks, greatly reduces the Durability of diamond compact.In order to cool down, water flowing is designed on diamond layer surface
Slot, such as claw type composite sheet, are water-cooled, radiate, to reduce thermal damage.This undesirable heating conduction makes diamond compact
Requirement to high heat resistance is restricted.
The matrix of diamond compact is mostly used tungsten carbide (WC), is usually sintered in electric furnace with powder metallurgy process, is consumed very much
Electricity, and its tyre-e/or performance is more crisp, when creeping into sandy pear variety, due to percussion, it is easier that drill bit wing fractures.So at present
Has the matrix using five-axis linkage machine tools come working steel products as diamond compact.The wing being made by it, good toughness, no
Frangibility and can do it is thin do height, be conducive to creep into, improve drilling speed.But its anti-mud corrosive power is poor.
Summary of the invention
One of the objects of the present invention is to provide a kind of 3D printing methods of diamond compact, to solve existing printing skill
The problem of cracking diamond compact due to thermal stress in art；
The second object of the present invention is to provide a kind of diamond compact, which has high abrasion, height
Heat-resisting, high-impact, the good characteristic of high life.
In order to solve the above-mentioned technical problem, one aspect of the present invention provides a kind of 3D printing method of diamond compact, packet
Include following steps:
S1: selecting basis material of the chrome molybdenum as diamond compact, and the diamond for being processed into required pattern is compound
Sheet matrix；
S2: nanoscale monocrystalline diamond powder or micron order mixing diamond dust are prepared；
S3: the diamond dust Flashmelt is set in by the diamond compact substrate using hot-working method
On, prepare diamond compact layer；
S4: using Cold-forming process by between the point of the diamond compact layer prepared in the step S3, between line, interlayer
Atom phase counterdiffusion, re-melts solidification；
Diamond dust is printed upon diamond compact according to preparatory design by S5: repeating said steps S3 and S4
On matrix, diamond compact is prepared.
Further, the diamond compact substrate is processed using five-axle linkage precision machine tool.
Further, the nanoscale monocrystalline diamond powder or micron order mixing diamond dust use detonation legal system
It is standby.
Further, for the diamond dust impurity content less than 1%, principal metal impurities content is less than 10PPM.
Further, using high power CW laser, by scanning, point-by-point, by-line, layer-by-layer printing make institute to the step S3
Diamond dust is stated to melt and solidify.
Further, the step S4 tracks the high power CW laser using ultrafast femto-second laser, to described
High power CW laser printing point between, between line, interlayer tracked, between making a little, between line, the atom phase counterdiffusion of interlayer,
Re-melt solidification.
Further, the Method of printing further include: at one layer 3-5 microns of the diamond compact printout surface thick
Metallic nickel.
Further, the Method of printing further include: in the diamond compact preparation process, be filled with nitrogen or lazy
Property gas, with anti-oxidation.
Another aspect of the present invention provides a kind of diamond compact, is prepared by the above method.
Further, the diamond compact is tooth-shape structure.
The beneficial effects of the present invention are: diamond compact 3D printing method of the invention is alternately processed using heat is cold
3D printing, between point, between line, the nano-diamond particle moment phase counterdiffusion of interlayer, be bonded to diamond and without heat transfer
Defect caused by the thermal stress of generation is concentrated, therefore printed in this way without adding metal Co as Binder Phase during the preparation process
The diamond compact of generation just has high abrasion, high heat resistance, high-impact, the good characteristic of high life.And it can be convenient ground
Be printed as tooth form diamond compact, be printed as integrated gear wheel and wing and form drill bit, so that it may efficiently exploit
Shale gas and uranium ore.
Detailed description of the invention
Fig. 1 is a kind of 3D printing method schematic diagram of diamond compact provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and specific implementation
Invention is further described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
In order to keep the narration of this disclosure more detailed with it is complete, below for embodiments of the present invention and specific real
It applies example and proposes illustrative description；But this not implements or uses the unique forms of the specific embodiment of the invention.Embodiment
In cover multiple specific embodiments feature and to construction with operate these specific embodiments method and step it is suitable with it
Sequence.However, can also reach identical or impartial function and sequence of steps using other specific embodiments.
Embodiment 1:
A kind of 3D printing method of diamond compact, comprising the following steps:
S1: selecting basis material of the chrome molybdenum as diamond compact, and the diamond for being processed into required pattern is compound
Sheet matrix；
S2: nanoscale monocrystalline diamond powder or micron order mixing diamond dust are prepared；
S3: the diamond dust Flashmelt is set in by the diamond compact substrate using hot-working method
On, prepare diamond compact layer；
S4: using Cold-forming process by between the point of the diamond compact layer prepared in the step S3, between line, interlayer
Atom phase counterdiffusion, re-melts solidification；
Diamond dust is printed upon diamond compact according to preparatory design by S5: repeating said steps S3 and S4
On matrix, diamond compact is prepared.
In some embodiments, using high power CW laser, by scanning, point-by-point, by-line, layer-by-layer printing make the gold
Hard rock powder melts simultaneously solidify.High power CW laser (or electron beam) can make printed material Flashmelt and solidification, make crystalline substance
Grain is tiny, ingredient is uniform, dense structure.So the comprehensive mechanical property of 3D printing product is excellent, while stock utilization is high, system
It makes faster, hot-working is belonged to using high power CW laser；But high power CW laser is by scanning, it is point-by-point, by
Line, when printing layer by layer and making material molten and solidify, the thermal stress as caused by the fuel factor of heat transfer makes the point of printing
Between, between line, in the boundary line and interface of interlayer will necessarily generate defect, part cracking is even resulted in, therefore, using super in the present invention
Fast femto-second laser tracks high power CW laser, between the point just printed, line, interlayer tracking be cold worked, it is extremely short
Between making a little in time, between line, the rapid phase counterdiffusion of the atom of interlayer, re-melt solidification, have little time occur heat transfer, belong to cold
Processing.The defect generated when original hot-working is set to disappear.Ultrafast pulse cold working can make a little between, between line, interface layer and boundary
It disappears, generates continuous gradual transition layer, do not have the mutation of the calorifics amount and mechanical quantity of macroscopic view, thus increasing temperature and high pressure
When, the cracking between interlayer and line, between point is not had, so producing using the 3D printing that the cold alternate method of heat can produce high quality
Product.
In some embodiments, diamond compact substrate is processed using five-axle linkage precision machine tool, and diamond dust is adopted
It is prepared with Detonation Process, prepared diamond dust impurity content is less than 1%, and principal metal impurities content is less than 10PPM, in this way
Manufactured diamond layer, bonding is securely, defect is few, has high-wearing feature and high impact properties.
In some embodiments, one layer 3-5 microns thick metallic nickels are printed in diamond surface, it can be made with good
Good thermal conductivity.Under the cold alternately processing of heat, the continuous transition of both materials will be generated on the interface of nickel and diamond layer
Layer, therefore there will be no the mutation of calorifics amount and mechanical quantity, can thus greatly increase the heat-sinking capability of diamond layer, slow down
Thermal shock prevents oxidation and carbonization of the generated high temperature to diamond layer in drilling cutting process, prevents thermal stress corrosion from existing
Diamond layer surface cracks, this has been considerably improved the thermal stability of diamond compact, it is made to have high-fire resistance, and
And enhance the Durability of diamond compact.
In some embodiments, the circulation equipment for filling protective gas is also introduced, in order to prevent material quilt during 3D printing
Oxidation, protective gas are nitrogen or inert gas (helium, neon, argon, krypton, xenon, radon).
Embodiment 2:
It the present embodiment provides a kind of diamond compact, is prepared by above-mentioned 3D printing method, and prepared
Diamond compact is tooth-shape structure.
Diamond compact provided in this embodiment is combined into drill bit with gear wheel and wing, can be used to high-efficiency mining shale
Gas and uranium ore.
It can also be used to produce the height of the diamond coatings of above-mentioned characteristic with the 3D printing technique that above-mentioned hot and cold is alternately processed
Fast numerical control drill, NC cutting tool, medical instrument, implantation product etc..In the present invention unless specifically defined or limited otherwise,
The terms such as term " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, can also be with for example, it may be fixedly connected
It is to be detachably connected, or it is integral；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also pass through
Intermediary is indirectly connected, and can be the connection inside two elements or the interaction relationship of two elements, unless otherwise bright
True restriction.For the ordinary skill in the art, it can understand as the case may be above-mentioned term in the present invention
Concrete meaning.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Above a specific embodiment of the invention, is not intended to limit the scope of the present invention..It is any according to this hair
Any other various changes and modifications made by bright technical concept should be included in the protection model of the claims in the present invention
In enclosing.
Claims (10)
1. a kind of 3D printing method of diamond compact, which comprises the following steps:
S1: basis material of the chrome molybdenum as diamond compact is selected, the diamond compact base of required pattern is processed into
Body；
S2: nanoscale monocrystalline diamond powder or micron order mixing diamond dust are prepared；
The diamond dust Flashmelt: being set on the diamond compact substrate by S3 using hot-working method, system
Standby diamond compact layer；
S4: using Cold-forming process by between the point of the diamond compact layer prepared in the step S3, between line, the atom of interlayer
Phase counterdiffusion re-melts solidification；
Diamond dust is printed upon on diamond compact substrate by S5: repeating said steps S3 and S4 according to preparatory design,
Prepare diamond compact.
2. a kind of 3D printing method of diamond compact as described in claim 1, which is characterized in that the diamond is compound
Sheet matrix is processed using five-axle linkage precision machine tool.
3. a kind of 3D printing method of diamond compact as described in claim 1, which is characterized in that the nanoscale monocrystalline
Diamond dust or micron order mixing diamond dust are prepared using Detonation Process.
4. a kind of 3D printing method of diamond compact as claimed in claim 3, which is characterized in that the diamond dust
For impurity content less than 1%, principal metal impurities content is less than 10PPM.
5. a kind of 3D printing method of diamond compact as described in claim 1, which is characterized in that the step S3 is used
High power CW laser melts the diamond dust and is solidified by point-by-point, by-line, layer-by-layer printing.
6. a kind of 3D printing method of diamond compact as claimed in claim 5, which is characterized in that the step S4 is used
Ultrafast femto-second laser tracks the high power CW laser, between the point of high power CW laser printing, line,
Interlayer is tracked, between making a little, between line, the atom phase counterdiffusion of interlayer, re-melt solidification.
7. a kind of 3D printing method of diamond compact as described in claim 1, which is characterized in that the Method of printing is also
It include: the metallic nickel at one layer 3-5 microns of the diamond compact printout surface.
8. a kind of 3D printing method of diamond compact as described in claim 1, which is characterized in that the Method of printing is also
It include: nitrogen or inert gas to be filled with, with anti-oxidation in the diamond compact preparation process.
9. a kind of diamond compact, which is characterized in that as the method preparation as described in claim 1-8 any claim
At.
10. a kind of diamond compact as claimed in claim 9, which is characterized in that the diamond compact is tooth form knot
Structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910555189.3A CN110374516A (en) | 2019-06-25 | 2019-06-25 | A kind of diamond compact and its 3D printing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910555189.3A CN110374516A (en) | 2019-06-25 | 2019-06-25 | A kind of diamond compact and its 3D printing method |
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| CN110374516A true CN110374516A (en) | 2019-10-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322938A (en) * | 2020-09-21 | 2021-02-05 | 北京科技大学 | Nickel-based composite material based on additive manufacturing, preparation method and forming method thereof |
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| US20110167734A1 (en) * | 2010-01-14 | 2011-07-14 | National Oilwell Varco, L.P. | Thermally Conductive Sand Mould Shell for Manufacturing a Matrix Bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20191025 |