CN105797648A - Manufacturing method of special-shaped hole polycrystalline diamond die blank - Google Patents
Manufacturing method of special-shaped hole polycrystalline diamond die blank Download PDFInfo
- Publication number
- CN105797648A CN105797648A CN201610175012.7A CN201610175012A CN105797648A CN 105797648 A CN105797648 A CN 105797648A CN 201610175012 A CN201610175012 A CN 201610175012A CN 105797648 A CN105797648 A CN 105797648A
- Authority
- CN
- China
- Prior art keywords
- boron nitride
- hexagonal boron
- polycrystalline diamond
- binding agent
- wire drawing
- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
- B01J3/062—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
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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
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/025—Dies; Selection of material therefor; Cleaning thereof comprising diamond parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2203/00—Processes utilising sub- or super atmospheric pressure
- B01J2203/06—High pressure synthesis
- B01J2203/0605—Composition of the material to be processed
- B01J2203/062—Diamond
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2203/00—Processes utilising sub- or super atmospheric pressure
- B01J2203/06—High pressure synthesis
- B01J2203/0605—Composition of the material to be processed
- B01J2203/0645—Boronitrides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2203/00—Processes utilising sub- or super atmospheric pressure
- B01J2203/06—High pressure synthesis
- B01J2203/065—Composition of the material produced
- B01J2203/0655—Diamond
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2203/00—Processes utilising sub- or super atmospheric pressure
- B01J2203/06—High pressure synthesis
- B01J2203/0675—Structural or physico-chemical features of the materials processed
- B01J2203/0685—Crystal sintering
Abstract
The invention discloses a manufacturing method of a special-shaped hole polycrystalline diamond die blank.The method comprises the steps that firstly, hexagonal boron nitride is processed into a column with a special-shaped section, then the hexagonal boron nitride column is put into a mixture formed by mixing diamond micro-powder and a binding agent and sintered, and the polycrystalline diamond die blank can be obtained through sintering under specific temperature and pressure conditions.According to the manufacturing method, the hexagonal boron nitride column is put into the center of the mixture of the diamond micro-powder and the binding agent, synthesis is achieved under the high temperature and high pressure, die hole pre-forming is achieved, and diversity of hole shapes is achieved by processing the hexagonal boron nitride column into various shapes.
Description
Technical field
The invention belongs to superhard material and manufacture field, be specifically related to the manufacture method of a kind of irregularly-shaped hole polycrystalline diamond wire drawing die base.
Background technology
Polycrystalline diamond has high hardness, wearability, thermal conductivity and higher intensity, compared with traditional sintered carbide wire drawing die, its life-span of wire drawing die manufactured with polycrystalline diamond is longer, and the wire rod of drawing or bar fineness is good, precision is high, cost is low, these excellent characteristics make it rapidly become the new material manufacturing wire drawing die.Polycrystalline diamond wire drawing die is according to pass, circular port and irregularly-shaped hole wire drawing die can be divided into, for manufacturing irregularly-shaped hole wire drawing die, laser or slow wire feeding cutting is generally adopted to be processed, but laser or slow wire feeding processing difficulties, too high processing temperature can increase the cracking probability of mold base, and difficulty of processing is big and yield rate is low, and processing cost is high.
Summary of the invention
The invention provides the manufacture method of a kind of irregularly-shaped hole polycrystalline diamond wire drawing die base, the method simple and fast, shorten the subsequent processing operations of punching, reduce the high temperature because producing when laser boring or slow wire feeding cut simultaneously and be likely to the probability cracked, significantly improve yield rate, reduce processing cost, contain hexagonal boron nitride with hole when endosexine, in use play the effect of lubrication.
In sum, the manufacture method of a kind of irregularly-shaped hole wire drawing mold base, including step be:
The first step, is processed into the cylinder that cross section is rectangle, triangle, ellipse, semicircle or other shapes by hexagonal boron nitride post；
Second step, mixs homogeneously diadust with binding agent, the composition of compound is mass fraction be 85% ~ 95% diadust and 5% ~ 15% binding agent；
3rd step, is placed on the hexagonal boron nitride cylinder of abnormity the center of compound, carries out High Temperature High Pressure sintering, and sintering condition is pressure 6GPa ~ 8.5GPa, temperature 1300 DEG C ~ 1600 DEG C；Sintering time is 300s ~ 1000s；
4th step, first removes hexagonal boron nitride post during molding, then polycrystalline diamond mold base is ground, is polished, and forms polycrystalline diamond wire drawing die base.
Further, described binding agent is the one in ferrum, cobalt, nickel.
The beneficial effect comprise that:
The cross section of the hexagonal boron nitride cylinder at the wire drawing mold base center manufactured by the present invention can be fabricated to variously-shaped, such as rectangle, triangle, ellipse, semicircle or polygon etc., according to the pass required for finishing die, hexagonal boron nitride cylinder is processed into above-mentioned shape, it is then placed in the center of the compound of diadust and binding agent powder, carrying out High Temperature High Pressure sintering afterwards, hexagonal boron nitride can penetrate into polycrystalline diamond top layer under the influence of high pressure and temperature.When processed finished products mould, directly hexagonal boron nitride cylinder is removed, and to simply grinding in hole, polishing.This method makes simple, and substantially reduces the following process time, improves production efficiency.
The present invention, by hexagonal boron nitride cylinder is put into the center of the compound of diadust and binding agent powder, synthesizes at high temperature under high pressure, it is achieved that nib preforming, by being processed into variously-shaped by hexagonal boron nitride cylinder, it is achieved that the variation of pass.
And this invention can directly take out hexagonal boron nitride cylinder or punch with conventional processing such as carbide drill or ultrasonic grinding, improve efficiency and reduce production cost, and reduce mold base to a certain extent the probability of crackle occurs, hexagonal boron nitride is contained in endosexine, hole, can in use play the effect of lubrication.
Accompanying drawing explanation
Fig. 1 is the variously-shaped sectional view of hexagonal boron nitride cylinder in polycrystalline diamond wire drawing die base.
Detailed description of the invention
Embodiment 1
The present embodiment will manufacture the polycrystalline diamond mold base that endoporus is rectangle.
The first step, is first processed into the cylinder that cross section is rectangle by hexagonal boron nitride cylinder.
Second step, puts it into the compound center of diadust and cobalt powder, and the mass fraction of diadust and cobalt powder is than for 17:3.
3rd step, the compound with hexagonal boron nitride cylinder is put into temperature be 1300 DEG C, pressure be 6GPa sintering machine in, sintering time is 400s.The polycrystalline diamond wire drawing die base containing rectangle hexagonal boron nitride is formed after having sintered.
4th step, directly extracts cubic boron nitride cylinder, is then ground with ultrasound wave, polishes, namely obtains finishing die.
Embodiment 2
The first step, is first processed into the cylinder that cross section is triangle by hexagonal boron nitride cylinder.
Second step, puts it into the compound center of diadust and cobalt powder, and the mass fraction of diadust and cobalt powder is than for 9:1.
3rd step, the compound with hexagonal boron nitride cylinder is put into temperature be 1350 DEG C, pressure be 6.5GPa sintering machine in, sintering time is 300s.The polycrystalline diamond wire drawing die base containing rectangle hexagonal boron nitride is formed after having sintered.
4th step, punches with laser, removes cubic boron nitride cylinder, then grinding and polishing, obtains finished product die.
Claims (2)
1. a manufacture method for irregularly-shaped hole wire drawing mold base, including step be:
The first step, is processed into rectangle, triangle, ellipse, semicircle or other designed shapes by hexagonal boron nitride post；
Second step, mixs homogeneously diadust with binding agent, the composition of compound is mass fraction be 85% ~ 95% diadust and 5% ~ 15% binding agent；
3rd step, is placed on the hexagonal boron nitride cylinder of abnormity the center of compound, carries out High Temperature High Pressure sintering, and sintering condition is pressure 6GPa ~ 8.5GPa, temperature 1300 DEG C ~ 1600 DEG C；
4th step, first removes hexagonal boron nitride post during molding, then polycrystalline diamond mold base is ground, is polished, and forms polycrystalline diamond wire drawing die base.
2. the manufacture method of a kind of irregularly-shaped hole wire drawing mold base according to claim 1, it is characterised in that: described binding agent is the one in ferrum, cobalt, nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175012.7A CN105797648A (en) | 2016-03-25 | 2016-03-25 | Manufacturing method of special-shaped hole polycrystalline diamond die blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610175012.7A CN105797648A (en) | 2016-03-25 | 2016-03-25 | Manufacturing method of special-shaped hole polycrystalline diamond die blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105797648A true CN105797648A (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610175012.7A Pending CN105797648A (en) | 2016-03-25 | 2016-03-25 | Manufacturing method of special-shaped hole polycrystalline diamond die blank |
Country Status (1)
| Country | Link |
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| CN (1) | CN105797648A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002353A (en) * | 2017-10-23 | 2018-05-08 | 富耐克超硬材料股份有限公司 | Water white transparency polycrystalline cubic boron nitride, preparation method and applications, the cutter for including the water white transparency polycrystalline cubic boron nitride |
| CN108031719A (en) * | 2017-12-29 | 2018-05-15 | 铜陵精远线模有限责任公司 | A kind of high luminosity flat glomerocryst wire-drawing die of high accuracy |
| CN108187586A (en) * | 2017-12-05 | 2018-06-22 | 广东钜鑫新材料科技股份有限公司 | A kind of processing method of polycrystalline diamond |
| CN114161327A (en) * | 2020-09-10 | 2022-03-11 | 江信有限公司 | Diamond particles and method for producing same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831428A (en) * | 1973-03-26 | 1974-08-27 | Gen Electric | Composite wire drawing die |
| CN201253638Y (en) * | 2008-09-23 | 2009-06-10 | 河南四方达超硬材料股份有限公司 | Novel diamond die pellet |
| CN103433313A (en) * | 2013-08-22 | 2013-12-11 | 郑州新亚复合超硬材料有限公司 | Polycrystalline diamond wire-drawing die blank and manufacturing method thereof |
| CN103752221A (en) * | 2014-01-21 | 2014-04-30 | 中国地质大学（北京） | Preparation method of ultrahard anti-abrasion PCD (Poly Crystal Diamond) material containing enhanced core |
-
2016
- 2016-03-25 CN CN201610175012.7A patent/CN105797648A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831428A (en) * | 1973-03-26 | 1974-08-27 | Gen Electric | Composite wire drawing die |
| CN201253638Y (en) * | 2008-09-23 | 2009-06-10 | 河南四方达超硬材料股份有限公司 | Novel diamond die pellet |
| CN103433313A (en) * | 2013-08-22 | 2013-12-11 | 郑州新亚复合超硬材料有限公司 | Polycrystalline diamond wire-drawing die blank and manufacturing method thereof |
| CN103752221A (en) * | 2014-01-21 | 2014-04-30 | 中国地质大学（北京） | Preparation method of ultrahard anti-abrasion PCD (Poly Crystal Diamond) material containing enhanced core |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002353A (en) * | 2017-10-23 | 2018-05-08 | 富耐克超硬材料股份有限公司 | Water white transparency polycrystalline cubic boron nitride, preparation method and applications, the cutter for including the water white transparency polycrystalline cubic boron nitride |
| CN108187586A (en) * | 2017-12-05 | 2018-06-22 | 广东钜鑫新材料科技股份有限公司 | A kind of processing method of polycrystalline diamond |
| CN108031719A (en) * | 2017-12-29 | 2018-05-15 | 铜陵精远线模有限责任公司 | A kind of high luminosity flat glomerocryst wire-drawing die of high accuracy |
| CN114161327A (en) * | 2020-09-10 | 2022-03-11 | 江信有限公司 | Diamond particles and method for producing same |
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Application publication date: 20160727 |
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