CN105772733A - Manufacturing method of polycrystalline diamond compacts with super-thick diamond layers - Google Patents
Manufacturing method of polycrystalline diamond compacts with super-thick diamond layers Download PDFInfo
- Publication number
- CN105772733A CN105772733A CN201610175010.8A CN201610175010A CN105772733A CN 105772733 A CN105772733 A CN 105772733A CN 201610175010 A CN201610175010 A CN 201610175010A CN 105772733 A CN105772733 A CN 105772733A
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- Prior art keywords
- diamond
- polycrystalline diamond
- disk
- polycrystalline
- temperature
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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
- 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
- B22F7/06—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 workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—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 workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a manufacturing method of polycrystalline diamond compacts with super-thick diamond layers and solves the problem that the polycrystalline diamond compacts cannot be synthesized when the thickness of the diamond layers is 3.0mm. The method comprises the following steps: firstly synthesizing polycrystalline diamond blank wafers by using diamond micro powder and metal powder under the high-temperature and high-pressure condition, manufacturing transition layers mixed with a plurality of metals on the polycrystalline diamond blank wafers and stacking tungsten carbide alloys on the transition layers, and sintering to form the polycrystalline diamond compacts with super-thick diamond layers. According to the technical scheme, the method is capable of producing batches of polycrystalline diamond compacts with the diamond layers with thickness being greater than or equal to 3.0mm; the yield is greater than 90%.
Description
Technical field
The present invention relates to superhard material manufacturing technology, be specifically related to the manufacture method of the composite polycrystal-diamond of a kind of super thick diamond layer.
Background technology
Composite polycrystal-diamond has the hardness of diamond and the toughness of wearability and carbide matrix material and weldability, it is a kind of excellent cutting element and high-abrasive material, is widely used in non-ferrous metals processing, wood materials processing, elastomeric material processing, plastic material processing, truer, high abrasion workpiece etc..
Inevitably there is composite all Problems existing in composite polycrystal-diamond as the composite of a kind of high rigidity, high abrasion, namely due to the difference of thermal coefficient of expansion between different materials, produce stress to concentrate at material interface place, thus causing material to deform, the defect such as internal voids, crackle.Due to the existence of these problems, the diamond layer thickness of the composite polycrystal-diamond of wide variety of employing static high pressure method synthesis in the market is at 0.3 ~ 2.2mm, and its yield rate is between 50 ~ 80%；When diamond layer thickness is when 2.2 ~ 3.0mm, the yield rate of composite polycrystal-diamond is less than 30%；When diamond layer thickness is more than 3.0mm, the yield rate of composite polycrystal-diamond is almost nil.
Summary of the invention
In order to solve problem of the prior art, the invention provides the manufacture method of the composite polycrystal-diamond of a kind of diamond layer super thick, when solving diamond layer more than 3.0mm, the problem that composite polycrystal-diamond cannot synthesize.
The technical solution used in the present invention is: the manufacture method of the composite polycrystal-diamond of a kind of super thick diamond layer, comprises the steps:
The first step, makes polycrystalline diamond base disk；By diadust and metal powder temperature be 1350-1600 DEG C, pressure be 6.5GPa when the synthesis thickness polycrystalline diamond base be more than or equal to 3mm, polycrystalline diamond base is made after spark machined, grinding, slow wire feeding cutting processing polycrystalline diamond base disk；
Second step, makes transition zone；By one or several the mixture powder in cobalt, nickel, tungsten, ferrum, titanium, silver, copper, zinc, stannum, lead temperature be 300 ~ 600 DEG C, pressure be 4 ~ 10MPa, temperature retention time be 3 ~ 10min when Vacuum Pressure make the disk that thickness is 0.15 ~ 0.2mm, diameter is identical with polycrystalline diamond base disk；
3rd step, is fabricated to diamondite and the disk of polycrystalline diamond base disk same diameter；
4th step, it is stacked together polycrystalline diamond base disk, transition zone disk and tungsten carbide disk in accordance with the order from top to bottom to assemble and makees as a whole to put into hot pressed sintering in vacuum sintering funace, sintering temperature is 500 ~ 750 DEG C, sintering pressure is 5 ~ 20MPa, temperature retention time is 30 ~ 60min, forms the composite polycrystal-diamond of polycrystalline diamond layer super thick after having sintered.
Further, described metal powder is one or several the mixture in cobalt, nickel, tungsten, ferrum, titanium, silver, copper, zinc, stannum, lead.
The beneficial effect comprise that: adopt the technical scheme in the present invention to be possible not only to the composite polycrystal-diamond of batch production diamond layer 3.0mm, and yield rate is more than 90%.
Accompanying drawing explanation
Fig. 1 is the structural representation of composite polycrystal-diamond in the present invention.
Detailed description of the invention
It is below a kind of embodiment of the present invention, this embodiment is 11mm in order to manufacture gross thickness, diameter 30mm, the composite polycrystal-diamond of thickness of diamond 5.5mm.
The manufacturing step that the present embodiment adopts is:
The first step, by diadust and cobalt, nickel, tungsten, ferrum, silver mixed metal powder temperature be 1350-1600 DEG C, pressure be 6.5GPa when synthesis diameter to be 31mm, thickness be 6.5mm polycrystalline diamond base, polycrystalline diamond base is made through electric spark and attrition process that to become diameter be that 30.0mm, thickness are the polycrystalline diamond base disk of 5.5mm and clean up surface.
Second step, it is 1-5% by certain mass and silver proportion, copper proportion is 35-70%, zinc proportion is 5-20%, stannum proportion is 1-5%, plumbous proportion is the silver of 1-10%, copper, zinc, stannum, plumbous mixed powder is 350 DEG C in temperature, and pressure is 5.0MPa, temperature retention time be 3min vacuum condition under be pressed into diameter to be 30.0mm, thickness be the transition zone disk of 0.2mm.
3rd step, it be 30.0mm, thickness is the disk of 6.0mm that diamondite is fabricated to diameter.
4th step, it is 30.0mm by the diameter prepared respectively in above-mentioned steps, thickness is the polycrystalline diamond base disk of 5.5mm, diameter is 30.0mm, thickness is the transition zone disk of 0.2mm, diameter is 30.0mm, thickness is the diamondite disk of 6.0mm, it is stacked together in accordance with the order from top to bottom to assemble and makees as a whole to put in vacuum sintering funace, it it is 580 DEG C in temperature, pressure is 7.0MPa, temperature retention time be 8min vacuum condition under form the composite polycrystal-diamond of a kind of diamond layer super thick, eventually passing plain grinding, to be processed into gross thickness be 11mm, diameter is 30mm, diamond layer thickness is the composite polycrystal-diamond of 5.5mm.
Claims (2)
1. a manufacture method for the composite polycrystal-diamond of super thick diamond layer, comprises the steps:
The first step, makes polycrystalline diamond base disk；By diadust and metal powder temperature be 1350-1600 DEG C, pressure be 6.5GPa when the synthesis thickness polycrystalline diamond base be more than or equal to 3mm, polycrystalline diamond base is made after spark machined, grinding, slow wire feeding cutting processing polycrystalline diamond base disk；
Second step, makes transition zone；By one or several the mixture powder in cobalt, nickel, tungsten, ferrum, titanium, silver, copper, zinc, stannum, lead temperature be 300 ~ 600 DEG C, pressure be 4 ~ 10MPa, temperature retention time be 3 ~ 10min when Vacuum Pressure make the disk that thickness is 0.15 ~ 0.2mm, diameter is identical with polycrystalline diamond base disk；
3rd step, is fabricated to diamondite and the disk of polycrystalline diamond base disk same diameter；
4th step, it is stacked together polycrystalline diamond base disk, transition zone disk and tungsten carbide disk in accordance with the order from top to bottom to assemble and makees as a whole to put into hot pressed sintering in vacuum sintering funace, sintering temperature is 500 ~ 750 DEG C, sintering pressure is 5 ~ 20MPa, temperature retention time is 30 ~ 60min, forms the composite polycrystal-diamond of polycrystalline diamond layer super thick after having sintered.
2. the manufacture method of the composite polycrystal-diamond of a kind of super thick diamond layer according to claim 1 is characterized in that: described metal powder is one or several the mixture in cobalt, nickel, tungsten, ferrum, titanium, silver, copper, zinc, stannum, lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610175010.8A CN105772733B (en) | 2016-03-25 | 2016-03-25 | A kind of manufacturing method of the composite polycrystal-diamond of super thick diamond layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175010.8A CN105772733B (en) | 2016-03-25 | 2016-03-25 | A kind of manufacturing method of the composite polycrystal-diamond of super thick diamond layer |
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| Publication Number | Publication Date |
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| CN105772733A true CN105772733A (en) | 2016-07-20 |
| CN105772733B CN105772733B (en) | 2018-08-17 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112830A (en) * | 2016-08-19 | 2016-11-16 | 广州晶体科技有限公司 | Edging wheel and manufacture method thereof |
| CN108422342A (en) * | 2017-02-13 | 2018-08-21 | 江苏信实精密工具有限公司 | Modify the moulding process and graphite matrix of the diamond roller of grinding wheel |
| CN109396448A (en) * | 2017-08-18 | 2019-03-01 | 深圳先进技术研究院 | Composite polycrystal-diamond and preparation method thereof |
| CN110142305A (en) * | 2019-05-28 | 2019-08-20 | 河南四方达超硬材料股份有限公司 | Polycrystalline diamond wire drawing die blank with high ring-dropping resistance and preparation method thereof |
| CN115213413A (en) * | 2021-06-18 | 2022-10-21 | 河南四方达超硬材料股份有限公司 | Composite superhard part and production process thereof |
| USD997219S1 (en) | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
| US11772977B2 (en) | 2019-07-10 | 2023-10-03 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom |
| USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular structure |
| USD1006073S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface sloping to a peripheral extension |
| USD1026981S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a tripartite raised surface |
| USD1026980S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface and groove therein |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112830B (en) * | 2016-08-19 | 2018-03-13 | 广州晶体科技有限公司 | Edging wheel and its manufacture method |
| CN106112830A (en) * | 2016-08-19 | 2016-11-16 | 广州晶体科技有限公司 | Edging wheel and manufacture method thereof |
| CN108422342A (en) * | 2017-02-13 | 2018-08-21 | 江苏信实精密工具有限公司 | Modify the moulding process and graphite matrix of the diamond roller of grinding wheel |
| CN108422342B (en) * | 2017-02-13 | 2020-02-21 | 江苏信实精密工具有限公司 | Forming process of diamond roller for dressing grinding wheel and graphite matrix |
| CN109396448A (en) * | 2017-08-18 | 2019-03-01 | 深圳先进技术研究院 | Composite polycrystal-diamond and preparation method thereof |
| CN110142305A (en) * | 2019-05-28 | 2019-08-20 | 河南四方达超硬材料股份有限公司 | Polycrystalline diamond wire drawing die blank with high ring-dropping resistance and preparation method thereof |
| US11772977B2 (en) | 2019-07-10 | 2023-10-03 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom |
| CN115213413A (en) * | 2021-06-18 | 2022-10-21 | 河南四方达超硬材料股份有限公司 | Composite superhard part and production process thereof |
| USD997219S1 (en) | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
| USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular structure |
| USD1006073S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface sloping to a peripheral extension |
| USD1026981S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a tripartite raised surface |
| USD1026980S1 (en) | 2021-10-14 | 2024-05-14 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface and groove therein |
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| CN105772733B (en) | 2018-08-17 |
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