CN105618499A - Manufacturing method of high-strength and high-wear-resistance polycrystalline diamond wire drawing mold blank - Google Patents
Manufacturing method of high-strength and high-wear-resistance polycrystalline diamond wire drawing mold blank Download PDFInfo
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- CN105618499A CN105618499A CN201610175009.5A CN201610175009A CN105618499A CN 105618499 A CN105618499 A CN 105618499A CN 201610175009 A CN201610175009 A CN 201610175009A CN 105618499 A CN105618499 A CN 105618499A
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- diamond
- wire drawing
- strength
- polycrystalline diamond
- diamond wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/18—Making tools by operations not covered by a single other subclass; Repairing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/025—Dies; Selection of material therefor; Cleaning thereof comprising diamond parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a manufacturing method of a high-strength and high-wear-resistance polycrystalline diamond wire drawing mold blank. The method comprises the following steps: metal covers the surface of diamond micropowder to form a metal layer; large-particle diamond and small-particle diamond are mixed in proportion and grinded; and the mixed diamond particles are put in a high-temperature and high-pressure container for sintering to form the high-strength and high-wear-resistance polycrystalline diamond wire drawing mold blank after mixing with adhesive. The wear resistance of the diamond wire drawing mold blank, produced by the method, is obviously improved; and the strength of the diamond particles is high.
Description
Technical field
The present invention relates to a kind of wortle base manufacturing process, it is specifically related to the manufacture method of a kind of high-strength, high-anti-friction polycrystalline diamond wire drawing die base.
Background technology
Wortle is a kind of instrument for wire drawing, such as draws metal wire, and such mould must have enough intensity to avoid breakage when wire drawing, has good wear resistance simultaneously. Diamond, as the known the highest material of hardness, is widely used in wortle industry. Due to the anisotropy of natural diamond and single-crystal diamond, in wire drawing process, natural diamond or single-crystal diamond in a certain position in hole by uneven abrasion; And polycrystalline diamond belongs to polycrystal, has isotropic feature, thus avoid the phenomenon that the nib uneven and nib of abrasion do not justify and occur.
Compared with Wimet, the tensile strength of polycrystalline diamond is only the 70% of conventional Wimet, but harder than Wimet 250%, like this so that polycrystalline diamond mould has more advantage than sintered carbide die. The wortle wear resisting property made with polycrystalline diamond is good, and bore wear is even, and strong shock resistance, wire drawing efficiency height, and price are more cheap than natural diamond many. Therefore polycrystalline diamond mould is widely used in wire drawing industry at present.
When polycrystalline diamond use coarse particles sintering and become and when being applied to wortle, wear resistance significantly improves in some cases, but on the other hand, compare the polycrystalline diamond become by fine particle diamond sintering, coarse particles polycrystalline diamond intensity is on the low side, easily ftracture when the wire rod that drawing hardness is higher, but fine particle polycrystalline diamond wear resistance is on the low side.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that the manufacture method of a kind of high-strength, high-anti-friction polycrystalline diamond wire drawing die base, make the existing higher wear resistance of mould base have again higher intensity.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A manufacture method for high-strength, high-anti-friction polycrystalline diamond wire drawing die base, the method comprises the steps:
The first step, chooses the diadust of 50 ~ 100 microns, diamond surface is applied layer of metal, and the thickness of metal level is 5 ~ 10 microns;
2nd step, mixes for 1:3 ~ 4 with small-particle diamond in mass ratio by the bulky diamond after coating, and the adamantine grain-size of small-particle is 5 ~ 15 microns;
3rd step, puts into planetary ball mill by mixed bulky diamond and small-particle diamond and mixes, and makes small-particle diamond be inlaid in the metal level of coating;
4th step, mixes the binding agent that mass percent is 80 ~ 90% mixed diamond particles and 10-20%;
5th step, puts into high-temperature resistant container sealing by described mixture;
6th step, it is 6GPa ~ 8.5GPa and sintering 3 ~ 30 minutes when temperature 1300 DEG C ~ 1600 DEG C that high temperature and high pressure containers is placed in pressure, obtains high-strength, high-anti-friction polycrystalline diamond wire drawing die embryo.
Further, described metal level is W, Co or Ni.
Further, described drum's speed of rotation is 500-1000 rev/min, and the ball milling time is 4 ~ 6 hours.
Further, described binding agent is Ni, Co, Fe or their alloy.
Further, described elevated temperature vessel material is zirconium metal, tantalum metal, molybdenum or niobium metal.
Accompanying drawing explanation
Fig. 1 is structural representation around the coated bulky diamond of small-particle diamond after mixing;
Fig. 2 is that between diamond particles, bond closes schematic diagram after High Temperature High Pressure sinters.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Embodiment 1:
Choose the micro-powder of bulky diamond of 50 microns, at the tungsten metal level of diadust surface-coated one layer 5 microns; The small-particle diamond that bulky diamond after coating and grain-size are 5 microns is mixed, it is that 1:3 fully mixes in planetary ball mill according to the adamantine mass ratio of bulky diamond and small-particle during mixing, the rotating speed regulating planetary ball mill is 800 revs/min, and the ball milling time is 4 hours.
In mixing process, small-particle diamond particles can be embedded in the metal level of macrobead polycrystalline diamond, and after fully mixing, small-particle diamond can be embedded in around bulky diamond uniformly.
Being that the mixed diamond particles of 80% and the binding agent of 16% mix by massfraction, binding agent wherein adopts Co. After diamond particles and binding agent fully mix, mixed powder is put into the high-temperature resistant container sealing of zirconium metal material.
It is that 6GPa, temperature sinter when being 1300 DEG C that sealed vessel is put into pressure, and sintering time is 6 minutes, after end to be sintered, can obtain high-strength, high-anti-friction polycrystalline diamond wire drawing die base.
Embodiment 2:
Choose the micro-powder of bulky diamond of 100 microns, at the tungsten metal level of diadust surface-coated one layer 10 microns; The small-particle diamond that bulky diamond after coating and grain-size are 15 microns is mixed, it is that 1:4 fully mixes in planetary ball mill according to the adamantine mass ratio of bulky diamond and small-particle during mixing, the rotating speed regulating planetary ball mill is 800 revs/min, and the ball milling time is 6 hours.
In mixing process, small-particle diamond particles can be embedded in the metal level of macrobead polycrystalline diamond, and after fully mixing, small-particle diamond can be embedded in around bulky diamond uniformly.
Being that the mixed diamond particles of 90% and the binding agent of 20% mix by massfraction, binding agent wherein adopts Co powder. After diamond particles and binding agent fully mix, mixed powder is put into the high-temperature resistant container sealing of molybdenum material.
It is that 7GPa, temperature sinter when being 1600 DEG C that sealed vessel is put into pressure, and sintering time is 8 minutes, after end to be sintered, can obtain high-strength, high-anti-friction polycrystalline diamond wire drawing die base.
The present invention is not limited to above-mentioned embodiment, and those skilled in the art also can make multiple change accordingly, but any is equal to the present invention or similar change all should be encompassed in the scope of the claims in the present invention.
Claims (5)
1. a manufacture method for high-strength, high-anti-friction polycrystalline diamond wire drawing die base, the method comprises the steps:
The first step, chooses the diadust of 50 ~ 100 microns, diamond surface is applied layer of metal, and the thickness of metal level is 5 ~ 10 microns;
2nd step, mixes for 1:3 ~ 4 with small-particle diamond in mass ratio by the bulky diamond after coating, and the adamantine grain-size of small-particle is 5 ~ 15 microns;
3rd step, puts into planetary ball mill by mixed bulky diamond and small-particle diamond and mixes, and makes small-particle diamond be inlaid in the metal level of coating;
4th step, mixes the binding agent that mass percent is 80 ~ 90% mixed diamond particles and 10-20%;
5th step, puts into high-temperature resistant container sealing by described mixture;
6th step, it is 6GPa ~ 8.5GPa and sintering 3 ~ 30 minutes when temperature 1300 DEG C ~ 1600 DEG C that high temperature and high pressure containers is placed in pressure, obtains high-strength, high-anti-friction polycrystalline diamond wire drawing die embryo.
2. the manufacture method of a kind of high-strength abrasion-proof polycrystalline diamond wire drawing die base according to claim 1 is characterized in that: described metal level is W, Co or Ni.
3. the manufacture method of a kind of high-strength abrasion-proof polycrystalline diamond wire drawing die base according to claim 1 is characterized in that: described drum's speed of rotation is 500-1000 rev/min, and the ball milling time is 4 ~ 6 hours.
4. the manufacture method of a kind of high-strength abrasion-proof polycrystalline diamond wire drawing die base according to claim 1 is characterized in that: described binding agent is Ni, Co, Fe or their alloy.
5. the manufacture method of a kind of high-strength abrasion-proof polycrystalline diamond wire drawing die base according to claim 1 is characterized in that: described elevated temperature vessel material is zirconium metal, tantalum metal, molybdenum or niobium metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175009.5A CN105618499A (en) | 2016-03-25 | 2016-03-25 | Manufacturing method of high-strength and high-wear-resistance polycrystalline diamond wire drawing mold blank |
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| CN201610175009.5A CN105618499A (en) | 2016-03-25 | 2016-03-25 | Manufacturing method of high-strength and high-wear-resistance polycrystalline diamond wire drawing mold blank |
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| CN105618499A true CN105618499A (en) | 2016-06-01 |
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| CN201610175009.5A Pending CN105618499A (en) | 2016-03-25 | 2016-03-25 | Manufacturing method of high-strength and high-wear-resistance polycrystalline diamond wire drawing mold blank |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376786A (en) * | 2017-08-24 | 2017-11-24 | 河南理工大学 | A kind of high rigidity polycrystalline diamond agglomerating plant and corresponding sintering method |
| CN110102585A (en) * | 2019-05-29 | 2019-08-09 | 河南四方达超硬材料股份有限公司 | Multilayer polycrystalline diamond wire drawing die blank, preparation method thereof and manufactured die |
| CN110184491A (en) * | 2019-06-03 | 2019-08-30 | 河南四方达超硬材料股份有限公司 | Polycrystalline diamond wire-drawing die blank with uniform structure and preparation method thereof |
| CN112226660A (en) * | 2020-10-20 | 2021-01-15 | 安徽酷勒威拉丝模有限公司 | High-strength wear-resistant polycrystalline diamond wire drawing die and preparation method thereof |
| CN112391547A (en) * | 2019-08-14 | 2021-02-23 | 中南大学 | Preparation method of polycrystalline material |
| CN114409405A (en) * | 2022-01-26 | 2022-04-29 | 河南景链新材料有限公司 | Polycrystalline diamond product with uniform microstructure and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376786A (en) * | 2017-08-24 | 2017-11-24 | 河南理工大学 | A kind of high rigidity polycrystalline diamond agglomerating plant and corresponding sintering method |
| CN107376786B (en) * | 2017-08-24 | 2020-12-18 | 河南理工大学 | A kind of high hardness polycrystalline diamond sintering equipment and corresponding sintering method |
| CN110102585A (en) * | 2019-05-29 | 2019-08-09 | 河南四方达超硬材料股份有限公司 | Multilayer polycrystalline diamond wire drawing die blank, preparation method thereof and manufactured die |
| CN110102585B (en) * | 2019-05-29 | 2024-02-09 | 河南四方达超硬材料股份有限公司 | Multilayer polycrystalline diamond wire drawing die blank, preparation method thereof and prepared die |
| CN110184491A (en) * | 2019-06-03 | 2019-08-30 | 河南四方达超硬材料股份有限公司 | Polycrystalline diamond wire-drawing die blank with uniform structure and preparation method thereof |
| CN112391547A (en) * | 2019-08-14 | 2021-02-23 | 中南大学 | Preparation method of polycrystalline material |
| CN112391547B (en) * | 2019-08-14 | 2022-07-08 | 中南大学 | A kind of preparation method of polycrystalline material |
| CN112226660A (en) * | 2020-10-20 | 2021-01-15 | 安徽酷勒威拉丝模有限公司 | High-strength wear-resistant polycrystalline diamond wire drawing die and preparation method thereof |
| CN114409405A (en) * | 2022-01-26 | 2022-04-29 | 河南景链新材料有限公司 | Polycrystalline diamond product with uniform microstructure and preparation method thereof |
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Application publication date: 20160601 |
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