CN107604232A - A kind of hard alloy substrate, machining composite polycrystal-diamond and preparation method thereof - Google Patents
A kind of hard alloy substrate, machining composite polycrystal-diamond and preparation method thereof Download PDFInfo
- Publication number
- CN107604232A CN107604232A CN201710757760.0A CN201710757760A CN107604232A CN 107604232 A CN107604232 A CN 107604232A CN 201710757760 A CN201710757760 A CN 201710757760A CN 107604232 A CN107604232 A CN 107604232A
- Authority
- CN
- China
- Prior art keywords
- tungsten carbide
- diamond
- alloy substrate
- hard alloy
- composite polycrystal
- Prior art date
- 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.)
- Granted
Links
Abstract
The invention belongs to super-hard compound material technical field, and in particular to a kind of hard alloy substrate, machining composite polycrystal-diamond and preparation method thereof.The hard alloy substrate of the present invention, is made up of the component of following weight percentage：Cobalt 12~16%, tungsten carbide 84~88%；Wherein tungsten carbide includes the tungsten carbide of coarseness, the tungsten carbide of middle granularity and fine-grained tungsten carbide, and the tungsten carbide particle diameter of coarseness is 12~15 μm, and the tungsten carbide particle diameter of middle granularity is 8~11 μm, and fine-grained tungsten carbide particle diameter is 3~8 μm.Thick fine-grained tungsten carbide is uniformly distributed in hard alloy substrate of the present invention; the tungsten carbide particle of coarseness, which can be woven into network and force the cobalt in matrix more uniformly to be swept, in sintering process more arrives diamond layer; the phenomenon of diamond layer cobalt skewness is reduced, improves the uniformity of its material.
Description
Technical field
The invention belongs to super-hard compound material field, and in particular to a kind of hard alloy substrate, machining glomerocryst Buddha's warrior attendant
Stone composite sheet and preparation method thereof.
Background technology
Pure diamond sintering condition is harsher, mainly there is both sides reason：First, diamond is high-melting-point, low diffusion
The material of coefficient, sintering phenomenon generally occur under more than the 2/3 of melting point substance temperature conditionss, and the particle of material connects under high temperature
Flow, diffusion and flowing occur first for contact portion point, are finally sintered together each other.Can by the P-T phasors (as shown in Figure 1) of carbon
Know：The fusing point of diamond is 4000K, i.e., sintering temperature must be more than 2700K (2400 DEG C), to make diamond be in P-T phases
Thermodynamically stable area on figure, its corresponding pressure are more than 8GPa, and less than this pressure, then diamond can enter at the temperature disclosed above
Enter the Thermodynamically stable area of graphite, diamond understands graphitization, what so high sintering pressure was very difficult to temperature；Second, gold
Hard rock has high hardness, even in above-mentioned pressure, at a temperature of be not easy to occur flow, so can not all be connect between particle
Touch, space be present, the pressure of gap is extremely low, under high temperature the diamond of gap will graphitization, as a result form a kind of performance
The diamond of difference and the sintered body of graphite.The content for sweeping more diamond layer bonding agent only by improving is wanted to its electric conductivity
Seeking Truth is far from enough, but is influenceed by current batch mixing condition, and the diamond content directly added in diamond compact is got over
The uneven phenomenon of its high batch mixing is more serious, ultimately results in the uneven of diamond layer material, the region of rich bonding agent is gold
Hard rock composite sheet synthesize and using process can easily graphitization, ultimately result in cutting edge and collapse knife, the damage at rapidoprint interface.
Composite polycrystal-diamond (PCD) due to its superelevation hardness (more than Vickers hardness 6000MPa, hard alloy
Vickers hardness is 2000MPa or so) and wearability be widely used as the cutting edge of superhard cutter, in Machining Hardened Steels, its is resistance to
Expenditure is 10~50 times of alloy cutter.With the emergence of China's manufacturing industry, the either dosage of PCD cutters or precision all carries
Higher requirement is gone out, the processing efficiency and machining accuracy of common wire cutting are far not by far up to the mark, main at present to use
EDM-W low-speed WEDMs and spark pulse power cutting (EDM-G), the uniformity of electric conductivity and material to product propose
New requirement.Domestic many producers are numerous and confused by the wearability for sacrificing product in order to reach split requirement, increase its bonding agent
Content, obtain the PCD that well easily cuts of electric conductivity, the composite polycrystal-diamond wearability and stable performance that this method obtains
Property can be all remarkably decreased, and seriously reduce PCD service life.
The content of the invention
It is an object of the invention to provide a kind of hard alloy substrate containing different grain size tungsten carbide.
Second purpose of the invention is to provide a kind of machining composite polycrystal-diamond, the composite sheet ensure it is resistance to
There is high heat endurance and good electric conductivity while mill property.
Another purpose of the invention is the preparation method for providing above-mentioned machining composite polycrystal-diamond.
To achieve the above object, the technical scheme is that：
A kind of hard alloy substrate, it is made up of the component of following weight percentage：Cobalt 12~16%, tungsten carbide 84~
88%；The tungsten carbide includes the tungsten carbide of coarseness, the tungsten carbide of middle granularity and fine-grained tungsten carbide, the coarseness
Tungsten carbide particle diameter is 12~15 μm, and the tungsten carbide particle diameter of the middle granularity is 8~11 μm, and the fine-grained tungsten carbide particle diameter is
3~8 μm.
The tungsten carbide of the coarseness, the tungsten carbide of middle granularity, the volume ratio of fine-grained tungsten carbide are 10~20:10~
20:60~80.
The volume of the tungsten carbide of the coarseness accounts for the 10~20% of the volume of tungsten carbide total in hard alloy substrate.
The volume of the tungsten carbide of the middle granularity accounts for the 10~20% of the volume of tungsten carbide total in hard alloy substrate.
The volume of the fine-grained tungsten carbide accounts for the 60~80% of the volume of tungsten carbide total in hard alloy substrate.
Hard alloy substrate used in traditional composite polycrystal-diamond is 3~8 μm of tungsten carbide particle, matrix
In cobalt sweep more arrive diamond layer when distribution it is very uneven, the electric conductivity in Fu Gu areas is relatively good, and TURP is cut comparatively fast, wearability
Difference；Pin Gu areas poorly conductive, the slow even TURP of electric cutting speed cut not feed, be cutter yield rate main influence because
Element.
Thick fine-grained tungsten carbide is uniformly distributed in hard alloy substrate of the present invention, the carbonization of coarseness in sintering process
Tungsten particle, which can be woven into network and force the cobalt in matrix evenly to be swept, more arrives diamond layer, reduces diamond layer cobalt skewness
Phenomenon, improve the uniformity of its material.
A kind of machining composite polycrystal-diamond, including above-mentioned hard alloy substrate and dimond synneusis layer.
The dimond synneusis layer is made up of the component of following weight percentage：90%~100% bortz powder, 0~
10% metallic bond.
The metallic bond is the one or more in cobalt, nickel, silicon, tungsten carbide.
The bortz powder is diadust.
The particle diameter of the diadust is 0.5~40 μm.
The preparation method of above-mentioned machining composite polycrystal-diamond, comprises the following steps：By dimond synneusis layer with
Hard alloy substrate is assembled into assembling block, is then sintered under the conditions of temperature is 1400~1550 DEG C, pressure is 5.5~6.5GPa
10~30min.
The dimond synneusis layer is made up of the component of following weight percentage：90%~100% bortz powder, 0~
10% metallic bond.
The bortz powder is diadust.The particle diameter of the diadust is 0.5~40 μm.
The metallic bond is the one or more in cobalt, nickel, silicon, tungsten carbide.
Above-mentioned assembling block includes the carbon pipe 6 with lumen, is arranged with salt pipe 7 in carbon pipe 6, hard alloy is provided with salt pipe 7
Matrix 2, dimond synneusis layer 1 and salt piece 9.Specifically, the first salt piece, first are disposed with from salt pipe one end to the other end
Hard alloy substrate, the first dimond synneusis layer, the second dimond synneusis layer, the second hard alloy substrate, the second salt piece.Hard
Shielding material, hard alloy substrate and salt are provided between alloy substrate, the outer peripheral face of dimond synneusis layer and salt pipe inner peripheral surface
Shielding material is also equipped between piece, is also equipped with shielding material between the first dimond synneusis layer and the second dimond synneusis layer
Material.The outer surface of first salt piece and the second salt piece is concordant with the end face of carbon pipe and the corresponding end of salt pipe, the first salt piece and its correspondingly
Carbon pipe and salt pipe end face on covered with the first steel ring, on the second salt piece and its end face of corresponding carbon pipe and salt pipe covered with
Second steel ring.First steel ring, the external diameter of the second steel ring are identical with the external diameter of carbon pipe.The end face of first steel ring and corresponding carbon pipe
Between be provided with the first carbon plate, the second carbon plate is provided between the second steel ring and the end face of corresponding carbon pipe.First carbon plate and the second carbon
The diameter of piece is identical with the external diameter of the first steel ring.The outer peripheral face upper measurement of carbon pipe is provided with pyrophyllite in lumps, the length of pyrophyllite in lumps etc.
In carbon length of tube and the first steel ring, the second steel ring, the first carbon plate, the second carbon plate thickness sum.
The hard alloy substrate of the present invention uses varigrained tungsten carbide, and thick fine-grained tungsten carbide is uniformly distributed,
The tungsten carbide particle of coarseness, which can be woven into network and force the cobalt in matrix evenly to be swept, during follow-up sintering more arrives diamond
Layer, the phenomenon of diamond layer cobalt skewness is reduced, improve the uniformity of its material.
The composite polycrystal-diamond of the present invention, the hard of distribution is interacted by polycrystalline diamond layer and tungsten carbide thickness granularity
Alloy substrate forms, and has preferable heat endurance, wear resistance ratio and electric conductivity.
The composite polycrystal-diamond of the present invention, micro metallic bond is with the addition of in diadust, is contributed to
Reaction temperature is reduced, shortens the reaction time, improves the bonding density of (D-D keys) between diamond.Polycrystalline diamond of the present invention is answered
Piece is closed while wearability is ensured with good heat endurance and electric conductivity, can realize and improve slow wire feeding and electrical spark working
The processing efficiency of work, and do not influence cutting-tool's used life.
Brief description of the drawings
Fig. 1 is the P-T phasors of carbon in background technology；
Fig. 2 is the structural representation of the composite polycrystal-diamond in embodiment 1；
Fig. 3 is the structural representation of the assembling block for preparing composite polycrystal-diamond in embodiment 1.
Embodiment
Embodiment 1
The hard alloy substrate of the present embodiment, it is made up of the component of following weight percentage：Cobalt 16%, tungsten carbide
84%；Above-mentioned tungsten carbide includes the tungsten carbide of coarseness, the tungsten carbide of middle granularity, fine-grained tungsten carbide, wherein, particle diameter 12
The tungsten carbide volume of~15 μm of coarseness accounts for the 10% of the volume of total tungsten carbide, and particle diameter is the carbonization of 8~11 μm of middle granularity
The volume of tungsten accounts for the 10% of the volume of total tungsten carbide, and particle diameter is that the volume of 3~8 μm of fine-grained tungsten carbide accounts for total tungsten carbide
The 80% of volume.
The machining composite polycrystal-diamond of the present embodiment, as shown in Fig. 2 including dimond synneusis layer 1 and above-mentioned
Hard alloy substrate 2, dimond synneusis layer are made up of 98% diadust and 2% cobalt powder.
The preparation method of the machining composite polycrystal-diamond of the present embodiment comprises the following steps：
After being measured diadust, the mixing of metallic bond cobalt powder by formula, purified with hard alloy substrate assembling in groups
Block is filled, 14min is sintered under the conditions of 1500 DEG C, 6.0GPa using cubic hinge press, produces.
Above-mentioned assembling block is arranged with salt pipe 7, set in salt pipe 7 as shown in figure 3, including the carbon pipe 6 with lumen in carbon pipe 6
There are hard alloy substrate 2, dimond synneusis layer 1 and salt piece 9.Specifically, is disposed with from salt pipe one end to the other end
One salt piece, the first hard alloy substrate, the first dimond synneusis layer, the second dimond synneusis layer, the second hard alloy substrate,
Disalt piece.Shielding material 8, hard are provided between hard alloy substrate, the outer peripheral face of dimond synneusis layer and salt pipe inner peripheral surface
Shielding material is also equipped between alloy substrate and salt piece, is also set between the first dimond synneusis layer and the second dimond synneusis layer
It is equipped with shielding material.The outer surface of first salt piece and the second salt piece is concordant with the end face of carbon pipe and the corresponding end of salt pipe, the first salt
Covered with the first steel ring 4, the second salt piece and its corresponding carbon pipe and salt pipe on piece and its end face of corresponding carbon pipe and salt pipe
Covered with the second steel ring on end face.First steel ring, the external diameter of the second steel ring are identical with the external diameter of carbon pipe.First steel ring with it is corresponding
Carbon pipe end face between be provided with the first carbon plate 5, the second carbon plate is provided between the second steel ring and the end face of corresponding carbon pipe.First
The diameter of carbon plate and the second carbon plate is identical with the external diameter of the first steel ring.The outer peripheral face upper measurement of carbon pipe is provided with pyrophyllite in lumps 3, leaf wax
The length of stone is equal to carbon length of tube and the first steel ring, the second steel ring, the first carbon plate, the thickness sum of the second carbon plate.
After the gained machining of embodiment 1 is processed as into finished size with composite polycrystal-diamond, finished product is carried out respectively
Wearability, shock resistance, heat resistance detection, as a result for：Wear resistance ratio：Turning silicon carbide grinding wheel relative wear ratio >=620,000
(according to professional standard JB/T 3235-2013Q/410BA313-2014)；Heat resistance：750 DEG C are heated 10 points under protective atmosphere
Clock, diamond layer is not cracked, is layered, carbonization phenomenon；Diamond is cut using slow wire feeding Germany Vollmer QWD760 lathes
Thickness degree is 0.5, the diamond compact of gross thickness 1.6, cutting speed 1.3mm/min, and cutting speed is steadily without fracture of wire.
Embodiment 2
The hard alloy substrate of the present embodiment, it is made up of the component of following weight percentage：Cobalt 12%, tungsten carbide
88%；Above-mentioned tungsten carbide includes the tungsten carbide of coarseness, the tungsten carbide of middle granularity, fine-grained tungsten carbide, wherein, particle diameter 12
The volume ratio that the volume of the tungsten carbide of~15 μm of coarseness accounts for total tungsten carbide is 20%, and particle diameter is 8~11 μm of middle granularity
The volume ratio that tungsten carbide volume accounts for total tungsten carbide is 15%, and particle diameter is that the volume of 3~8 μm of fine-grained tungsten carbide accounts for total carbonization
The volume ratio of tungsten is 65%.
The machining composite polycrystal-diamond of the present embodiment, including dimond synneusis layer and above-mentioned carbide matrix
Body, dimond synneusis layer are made up of 90% diadust, 5% nickel powder, 5% silica flour.
The preparation method of the machining composite polycrystal-diamond of the present embodiment comprises the following steps：
Measure by formula and assembled in groups with hard alloy substrate after diadust, metallic bond nickel powder, silica flour mix
Block is filled, 12min is sintered under the conditions of 1450 DEG C, 6.5GPa using cubic hinge press, produces.
The structure of above-mentioned assembling block is with embodiment 1, and here is omitted.
After the gained machining of embodiment 2 is processed as into finished size with composite polycrystal-diamond, finished product is carried out respectively
Wearability, shock resistance, heat resistance detection, as a result for：Wear resistance ratio：Turning silicon carbide grinding wheel relative wear ratio >=510,000
(according to professional standard JB/T 3235-2013Q/410BA313-2014)；Heat resistance：750 DEG C are heated 10 points under protective atmosphere
Clock, diamond layer is not cracked, is layered, carbonization phenomenon；Diamond is cut using slow wire feeding Germany Vollmer QWD760 lathes
Thickness degree is 0.5, the diamond compact of gross thickness 1.6, cutting speed 1.5mm/min, and cutting speed is steadily without fracture of wire.
Embodiment 3
The hard alloy substrate of the present embodiment, it is made up of the component of following weight percentage：Cobalt 15%, tungsten carbide
85%；Above-mentioned tungsten carbide includes the tungsten carbide of coarseness, the tungsten carbide of middle granularity, fine-grained tungsten carbide, wherein, particle diameter 12
The volume ratio that the tungsten carbide of~15 μm of coarseness accounts for total tungsten carbide in hard alloy substrate is 15%, and particle diameter is 8~11 μm
The volume ratio that the tungsten carbide of middle granularity accounts for total tungsten carbide in hard alloy substrate is 15%, and particle diameter is 3~8 μm of fine-grained carbon
The volume ratio that change tungsten accounts for total tungsten carbide in hard alloy substrate is 70%.
The machining composite polycrystal-diamond of the present embodiment, including dimond synneusis layer and above-mentioned carbide matrix
Body, dimond synneusis layer are made up of 94% diadust and 6% tungsten carbide.
The preparation method of the machining composite polycrystal-diamond of the present embodiment comprises the following steps：
With hard alloy substrate assembling is assembled into after measuring diadust, the mixing of metallic bond tungsten carbide by formula
Block, it is put into cubic hinge press synthesis chamber, sinters 15min under the conditions of 1500 DEG C, 6.0GPa, produce.
The structure of above-mentioned assembling block is with embodiment 1, and here is omitted.
After the gained machining of embodiment 3 is processed as into finished size with composite polycrystal-diamond, product is carried out respectively
Wearability, shock resistance, heat resistance detection, as a result for：
Wear resistance ratio：Turning silicon carbide grinding wheel relative wear ratio >=580,000 are (according to professional standard JB/T 3235-2013Q/
410BA313-2014)；Heat resistance：750 DEG C are heated 10 minutes under protective atmosphere, and diamond layer is not cracked, is layered, carbon
Change phenomenon；Slow wire feeding Germany Vollmer QWD760 lathes are used to cut diamond layer thickness as 0.5, the diamond of gross thickness 1.6
Composite sheet, cutting speed 1.6mm/min, and cutting speed are steadily without fracture of wire.
Embodiment 4
The hard alloy substrate of embodiment, it is made up of the component of following weight percentage：Cobalt 15%, tungsten carbide 85%；
Above-mentioned tungsten carbide includes the tungsten carbide of coarseness, the tungsten carbide of middle granularity, fine-grained tungsten carbide, wherein, particle diameter is 12~15 μ
The volume ratio that the tungsten carbide of m coarseness accounts for total tungsten carbide in hard alloy substrate is 15%, and particle diameter is 8~11 μm of middle granularity
Tungsten carbide to account for the volume ratio of total tungsten carbide in hard alloy substrate be 15%, particle diameter is that 3~8 μm of fine-grained tungsten carbide accounts for
The volume ratio of total tungsten carbide is 70% in hard alloy substrate.
The machining composite polycrystal-diamond of the present embodiment, including dimond synneusis layer and above-mentioned carbide matrix
Body, dimond synneusis layer are made up of diadust.
The preparation method of the machining composite polycrystal-diamond of the present embodiment comprises the following steps：
Diadust is measured by formula and is assembled into assembling block with hard alloy substrate, is put into cubic hinge press synthesis chamber
In, 15min is sintered under the conditions of 1500 DEG C, 6.0GPa, is produced.
The structure of above-mentioned assembling block is with embodiment 1, and here is omitted.
Claims (7)
1. a kind of hard alloy substrate, it is characterised in that be made up of the component of following weight percentage：Cobalt 12~16%, carbon
Change tungsten 84~88%；The tungsten carbide includes the tungsten carbide of coarseness, the tungsten carbide of middle granularity and fine-grained tungsten carbide, described
The tungsten carbide particle diameter of coarseness is 12~15 μm, and the tungsten carbide particle diameter of the middle granularity is 8~11 μm, the fine-grained carbonization
Tungsten particle footpath is 3~8 μm.
2. hard alloy substrate according to claim 1, it is characterised in that the tungsten carbide of the coarseness, middle granularity
Tungsten carbide, the volume ratio of fine-grained tungsten carbide are 10~20:10~20:60~80.
3. a kind of machining composite polycrystal-diamond, it is characterised in that including carbide matrix as claimed in claim 1
Body and dimond synneusis layer.
4. machining composite polycrystal-diamond according to claim 3, it is characterised in that the dimond synneusis layer
It is made up of the component of following weight percentage：90%~100% bortz powder, 0~10% metallic bond.
A kind of 5. preparation method of machining composite polycrystal-diamond as claimed in claim 3, it is characterised in that including
Following steps：Dimond synneusis layer and hard alloy substrate are assembled into assembling block, is then 1400~1550 DEG C, presses in temperature
Power sinters 10~30min under the conditions of being 5.5~6.5GPa.
6. the preparation method of machining composite polycrystal-diamond according to claim 5, it is characterised in that the gold
Hard rock glomerocryst layer is made up of the component of following weight percentage：90%~100% bortz powder, 0~10% metallic bond.
7. the preparation method of machining composite polycrystal-diamond according to claim 6, it is characterised in that the gold
Category bonding agent is the one or more in cobalt, nickel, silicon, tungsten carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710757760.0A CN107604232B (en) | 2017-08-29 | 2017-08-29 | A kind of hard alloy substrate, machining composite polycrystal-diamond and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710757760.0A CN107604232B (en) | 2017-08-29 | 2017-08-29 | A kind of hard alloy substrate, machining composite polycrystal-diamond and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107604232A true CN107604232A (en) | 2018-01-19 |
| CN107604232B CN107604232B (en) | 2019-05-24 |
Family
ID=61056528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710757760.0A Active CN107604232B (en) | 2017-08-29 | 2017-08-29 | A kind of hard alloy substrate, machining composite polycrystal-diamond and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107604232B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455252A (en) * | 2020-05-12 | 2020-07-28 | 江西江钨硬质合金有限公司 | Non-uniform hard alloy prepared by adopting close-packed batching mode and preparation method thereof |
| CN114472899A (en) * | 2022-02-11 | 2022-05-13 | 四川伽锐科技有限公司 | Polycrystalline composite material and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722174A (en) * | 2013-12-30 | 2014-04-16 | 中原工学院 | Self-sharpening polycrystalline diamond compact and preparation method thereof |
| CN103882275A (en) * | 2014-04-04 | 2014-06-25 | 株洲硬质合金集团有限公司 | Toughened hard alloy and preparation method thereof |
-
2017
- 2017-08-29 CN CN201710757760.0A patent/CN107604232B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722174A (en) * | 2013-12-30 | 2014-04-16 | 中原工学院 | Self-sharpening polycrystalline diamond compact and preparation method thereof |
| CN103882275A (en) * | 2014-04-04 | 2014-06-25 | 株洲硬质合金集团有限公司 | Toughened hard alloy and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455252A (en) * | 2020-05-12 | 2020-07-28 | 江西江钨硬质合金有限公司 | Non-uniform hard alloy prepared by adopting close-packed batching mode and preparation method thereof |
| CN114472899A (en) * | 2022-02-11 | 2022-05-13 | 四川伽锐科技有限公司 | Polycrystalline composite material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107604232B (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103537699B (en) | A kind of preparation method of polycrystalline cubic boron nitride compound sheets | |
| CN102505090B (en) | Preparation method of high-toughness polycrystalline cubic boron nitride compound sheets | |
| CN109822102B (en) | Preparation method of fine-grained diamond saw blade | |
| CN101608533B (en) | Drill bit impregnated with diamond film and manufacturing method thereof | |
| CN110819866B (en) | WC-Co-B4Preparation method of C hard alloy | |
| CN105772733B (en) | A kind of manufacturing method of the composite polycrystal-diamond of super thick diamond layer | |
| EP3266756B1 (en) | Polycrystalline diamond body, cutting tool, wear-resistant tool, and grinding tool | |
| CN106869805B (en) | A kind of composite polycrystal-diamond and preparation method thereof | |
| CN102606082A (en) | Diamond compact and manufacturing process for same | |
| CN101862834A (en) | One-step molded multilayer brazed diamond drill bit | |
| CN103100977B (en) | Preparation method of high-strength diamond grinding wheel dressing pen | |
| CN108161362B (en) | Polycrystalline diamond compact and manufacturing method thereof | |
| CN107604232B (en) | A kind of hard alloy substrate, machining composite polycrystal-diamond and preparation method thereof | |
| CN110640147B (en) | Cutter and manufacturing method thereof | |
| CN101824968B (en) | Novel brazed impregnated diamond bit | |
| UA63469A (en) | Diamond-hardalloyed plate | |
| CN107379663A (en) | MULTILAYER COMPOSITE interlayer material for synthesizing superhard material sintered body | |
| CN108161781A (en) | A kind of preparation method of novel multi-layer Study on Brazed Superabrasive Tools | |
| CN106964779A (en) | The preparation method of the free sintered diamond cutter head of spontaneous-heating type | |
| CN111266573B (en) | Preparation method of polycrystalline cubic boron nitride composite sheet | |
| CN106180733B (en) | A kind of processing method of superhard material knurling tool | |
| CN108705087A (en) | Diamond compact with control carbon-coating | |
| CN102896311A (en) | Powder-shaped adhesive for diamond composite sheet and preparation method thereof | |
| CN102049583A (en) | Method for manufacturing composite welding blade | |
| CN107269225B (en) | The radial positioning distribution superthin layer composite drill bit of diamond and its manufacture craft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |