CN100370060C - Mold with super hard coating - Google Patents
Mold with super hard coating Download PDFInfo
- Publication number
- CN100370060C CN100370060C CNB2004100276319A CN200410027631A CN100370060C CN 100370060 C CN100370060 C CN 100370060C CN B2004100276319 A CNB2004100276319 A CN B2004100276319A CN 200410027631 A CN200410027631 A CN 200410027631A CN 100370060 C CN100370060 C CN 100370060C
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- CN
- China
- Prior art keywords
- superhard
- die
- mold
- plated film
- particulate
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Other Surface Treatments For Metallic Materials (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The present invention relates to a mold for molding glass products, which comprises a mold basal body with a molding surface and a superhard film covered on the molding surface, wherein the superhard film comprises an amorphous boron-carbon-nitrogen material basal body, cubic crystal boron nitride nanon particles distributed in the amorphous boron-carbon-nitrogen material basal body and diamond nanon particles. The lubricity of amorphous boron-carbon-nitrogen materials is favorable for demoulding, and the cubic crystal boron nitride nanon particles and the diamond nanon particles have nanon-stage grain sizes and very high hardness, which can improve the mechanical strength of the molding surface. The superhard film can also prevent the diffusion of metal elements in a mold-core basal body.
Description
[technical field]
The present invention relates to a kind of die that is used for mold pressing opticglass, relate in particular to the die of a kind of high rigidity and the easy demoulding.
[background technology]
Mould is widely used in the compression molding processing procedure, especially for making the opticglass product, as aspheric surface glass lens, globe lens, prism etc., adopt direct compression molding (Direct Press-molding) but the high-quality opticglass product of technology direct production, and need not subsequent process steps such as polishing, polishing, can enhance productivity greatly and output.But directly compression molding method requires very high for the chemical stability of mould, thermal shock resistance, physical strength, surface flatness etc.So in fact the development of compression molding technology depends primarily on the progress of the material and the technology of die manufacturing of mould.For the mould that is used for compression molding following requirement is arranged generally:
A. when high temperature, has good rigidity, anti-mechanical impact strength and enough hardness;
B. reaching repeatedly under the thermal shocking of rapid heating refrigerative, mould does not crack or is out of shape;
C. chemical reaction does not take place in molding surface and opticglass when high temperature, does not stick glass;
D. high temperature oxidation does not take place in mould;
E. good processability easily is processed into the profile of high precision and high surface finish;
F. cost is low.
Traditional moulds adopts stainless steel or refractory alloy as moulding stock mostly, and high temperature oxidation takes place this mould easily, and particularly under thermal shocking effect repeatedly, grain growth can take place material, thereby glass is cohered in the die surface roughen.
For addressing the above problem, nonmetal and superhard alloy is used to mfg. moulding die.It is reported silicon carbide (SiC), silicon nitride (Si
3N
4), titanium carbide (TiC), wolfram varbide (WC) and tungsten-cobalt carbide alloy have been used to make this mould.But above-mentioned various carbide ceramics hardness are very high, are difficult to be processed into needed given configuration, particularly high precision aspheric surface shape.And superhard alloy uses for some time also high temperature oxidation may take place afterwards except that being difficult to processing.
So, be mold base with carbide or superhard alloy, the composite structure mould that its surface is formed with other material coating or coating becomes new developing direction.
United States Patent (USP) the 4th, 685, disclose a kind of composite structure mould that is used for direct compression molding opticglass product No. 948, it adopts high-intensity superhard alloy, carbide ceramics or sintering metal as die matrix, and be formed with iridium (Ir) thin film layer in the mold pressing surface of mould, or the alloy firm layer of Ir and platinum (Pt), rhenium (Re), osmium (Os), rhodium (Rh) or ruthenium (Ru), or Ru thin film layer, or the alloy firm layer of Ru and Pt, Re, Os, Rh.
But, above-mentioned various precious metals or its alloy resource scarcity, the output rareness costs an arm and a leg, and makes this die cost improve greatly; And, carbide or sintering metal are as die matrix, generally be to form, in sintering process, need to add cobalt (Co), nickel (Ni) or molybdenum metallic elements such as (Mo) and participate in sintering, like this as additive by sintering, after the long-time use of mould, the metallic element of these interpolations will diffuse to the outside surface of mould by above-mentioned layer of precious metal, thus the glass material generation chemical reaction that mold pressing forms with desire, change the color of glass, influence the precision of mould and the quality of compression molding glassy product.These shortcomings are unacceptable for the high-precision optical glassy product.
Except that above-mentioned formation noble metal film layer, industry utilizes electric pulp vapour deposition process (Plasma CVD) or thermal chemical vapor deposition method (Thermal CVD) to form silicon carbide or silicon nitride film layer on the die matrix surface in addition, but, this thin film layer sticks together the opticglass product easily when 400 celsius temperatures, make the opticglass product be difficult for the demoulding.
In view of this, provide a kind of chemical stability good, the metallic element that can prevent mold matrix is to external diffusion, and it is real in necessary can not stick together the die of glass during the demoulding.
[summary of the invention]
Be to solve the problems referred to above of known techniques, the object of the present invention is to provide a kind of anti-oxidation, physical strength is high, can prevent the metallic element diffusion and the die of the demoulding easily.
For realizing the present invention's purpose, the invention provides a kind of die with superhard plated film, it comprises: a mould benevolence matrix, it has a mold pressing surface; And a superhard rete is covered in the mold pressing surface of this mould benevolence matrix.This superhard rete comprises that amorphousness boron-carbon-nitrogen material successive substrates, cubic boron nitride particulate and diamond carbon Particle Distribution are in this amorphousness boron-carbon-nitrogen material matrix.
With respect to prior art, the present invention forms a superhard rete in the mold matrix mold pressing surface of high rigidity, utilizes the good characteristics of amorphousness boron-carbon-nitrogen material matrix oilness, makes die of the present invention when mold pressing, can not stick together the demoulding easily with the opticglass product; Thirty years of age prismatic crystal particulate boron nitride and diamond carbon particulate extreme hardness are so can improve the physical strength of mold pressing surface; In addition, this superhard rete also can prevent the metallic element diffusion of mold matrix, thereby avoids glassy product is produced detrimentally affect.
[description of drawings]
Fig. 1 is the synoptic diagram that first embodiment of the invention is used for the die of mold pressing aspherics glassy product;
Fig. 2 is the synoptic diagram that second embodiment of the invention is used for the die of molded surface opticglass product.
[embodiment]
The present invention is described in further detail below in conjunction with accompanying drawing.
See also Fig. 1, first embodiment of the invention provides a kind of die 10 that is used for mold pressing aspherics glassy product, the thin film layer 14 that it comprises a mold matrix 12 and is formed at mold matrix 12 mold pressing surface.This mold matrix 12 can be that main raw gets through the sintering manufacturing: SiC, Si, Si by following pottery, sintering metal or superhard alloy
3N
4, ZrO
2, Al
2O
3, TiN, TiO
2, TiC, B
4C, WC, W or WC-Co.The mold pressing surface of mold matrix 12 needs corresponding with the shape of the aspherics glassy product for the treatment of mold pressing, i.e. aspheric surface shape.Thin film layer 14 is covered in the mold pressing surface of mold matrix 12, it comprises amorphousness boron-carbon-nitrogen material 16 (Amorphous Boron Carbon Nitride, i.e. a-BCN), cubic boron nitride particulate 17 (Cubic Boron Nitride) and diamond carbon particulate 18.Amorphousness boron-carbon-nitrogen material 16 is a successive layers, can be used as the matrix that cubic boron nitride particulate 17 and diamond carbon particulate 18 distribute; Thirty years of age prismatic crystal particulate boron nitride 17 and diamond carbon particulate 18 are discrete or partial continuous is distributed in whole amorphousness boron-carbon-nitrogen material 16 matrixes, and its content accounts for thin film layer 14 total amounts 10%～60% (molar percentage).The particle diameter of cubic boron nitride particulate 17 and diamond carbon particulate 18 is in the 1-100 nanometer range, preferably in 5～100 nanometer range.And the thickness of thin film layer 14 can be at 1 micron to 100 micrometer ranges.
Certainly, the present invention not only can be used for the die of mold pressing aspherics glassy product, also can be applicable to the die of the molded product of other different shapes, different purposes.See also Fig. 2, second embodiment of the invention provides a kind of die 20 that is used for molded surface opticglass product, and it comprises that one has the mold matrix 22 of smooth flat, and is covered in the thin film layer 24 of this smooth flat.This mold matrix 22 can be that main raw gets through the sintering manufacturing: SiC, Si, Si by following pottery, sintering metal or superhard alloy
3N
4, ZrO
2, Al
2O
3, TiN, TiO
2, TiC, B
4C, WC, W or WC-Co.Thin film layer 24 is to comprise amorphousness boron-carbon-nitrogen material 26, cubic boron nitride particulate 27 and diamond carbon particulate 28.Amorphousness boron-carbon-nitrogen material 26 is successive layerss, can be used as the matrix that cubic boron nitride particulate 27 and diamond carbon particulate 28 distribute; Thirty years of age prismatic crystal particulate boron nitride 27 and diamond carbon particulate 28 are discrete or partial continuous is distributed in whole amorphousness boron-carbon-nitrogen material 26 matrixes, and its content accounts for thin film layer 24 total amounts 10%～60% (molar percentage).The particle diameter of cubic boron nitride particulate 27 and diamond carbon particulate 28 is preferably in 5～100 nanometer range in the 1-100 nanometer range.And the thickness of thin film layer 24 can be at 1 micron to 100 micrometer ranges.
Among above-mentioned two embodiment, mold matrix 12 and 22 is prepared from by sintering or other working method, thin film layer 14 and 24 can form by electric pulp vapour deposition process (Plasma Chemical Vapor Deposition) or sputtering method, comprise microwave electricity pulp vapour deposition process (Microwave Plasma ChemicalVapor Deposition), plate method (Co-Sputtering) or reaction formula sputtering method (ReactiveSputtering) altogether.
The present invention's die 10 (20), its mold matrix 12 (22) has high rigidity, the advantage of high mechanical strength, pressure that produces in the time of can bearing hot press moulding and stress.Mold pressing surface is covered by thin film layer 14 (24), it is formed by being difficult for oxidized non-metallic material, the cubic boron nitride particulate 17 (27) and diamond carbon particulate 18 (28) that comprise softer amorphousness boron-carbon-nitrogen material 16 (26) and high rigidity are because amorphousness boron-carbon-nitrogen material 16 (26) contains sp
2Bond makes that its oilness is good, so, the easy demoulding of moulded glass product; Hardness height, the particle diameter of thirty years of age prismatic crystal particulate boron nitride 17 (27) and diamond carbon particulate 18 (28) are little, both can strengthen the physical strength on die surface, and the precision of mold pressing surface is improved.In addition, this thin film layer 14 (24) also can stop the metallic element of mold matrix 12 (22) to permeate, diffuse to thin film layer 14 (24) outsides when using, and avoids these metallic elements to make the glass variable color, influences the opticglass quality.In sum, the die with superhard plated film of the present invention have high mechanical strength, anti-oxidant, chemical stability is good and the characteristics of the easy demoulding.
Claims (10)
1. die with superhard plated film, it comprises: a mold matrix, it has a mold pressing surface; And a superhard rete is covered in the mold pressing surface of this mold matrix; It is characterized in that: this superhard rete comprises that amorphousness boron-carbon-nitrogen material successive substrates, cubic boron nitride particulate and diamond carbon Particle Distribution are in this amorphousness boron-carbon-nitrogen material matrix.
2. the die with superhard plated film as claimed in claim 1 is characterized in that: this mold matrix is by SiC, Si, Si
3N
4, ZrO
2, Al
2O
3, TiN, TiO
2, TiC, B
4A kind of making among C, WC, W or the WC-Co.
3. the die with superhard plated film as claimed in claim 2 is characterized in that: this mold matrix is to form through sintering.
4. the die with superhard plated film as claimed in claim 1 is characterized in that: this superhard rete is to form by electric pulp vapour deposition process deposition.
5. the die with superhard plated film as claimed in claim 1 is characterized in that: this superhard film layer thickness be 1 micron to 100 micrometer ranges.
6. the die with superhard plated film as claimed in claim 1 is characterized in that: the molar percentage that this cubic boron nitride particulate and diamond carbon particulate account for the superhard film stratum total is 10%～60%.
7. the die with superhard plated film as claimed in claim 1 is characterized in that: the particle diameter of this cubic boron nitride particulate and diamond carbon particulate is a nano level.
8. the die with superhard plated film as claimed in claim 7 is characterized in that: the particle diameter of this cubic boron nitride particulate and diamond carbon particulate is in 5～100 nanometer range.
9. the die with superhard plated film as claimed in claim 1 is characterized in that: the mold pressing surface of this die is an aspheric surface.
10. the die with superhard plated film as claimed in claim 1 is characterized in that: the mold pressing surface of this die is the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100276319A CN100370060C (en) | 2004-06-07 | 2004-06-07 | Mold with super hard coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100276319A CN100370060C (en) | 2004-06-07 | 2004-06-07 | Mold with super hard coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1706983A CN1706983A (en) | 2005-12-14 |
| CN100370060C true CN100370060C (en) | 2008-02-20 |
Family
ID=35581090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100276319A Expired - Fee Related CN100370060C (en) | 2004-06-07 | 2004-06-07 | Mold with super hard coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100370060C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843972B (en) * | 2015-03-26 | 2018-04-27 | 苏州含光微纳科技有限公司 | A kind of new core rod for being used for optical lens processing and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6043461A (en) * | 1983-08-18 | 1985-03-08 | Toshiba Tungaloy Co Ltd | Boron nitride-base sintered body having high-density phase and its manufacture |
| JPH04331798A (en) * | 1991-05-02 | 1992-11-19 | Toyota Central Res & Dev Lab Inc | Method of forming diamond film |
| JP2002274867A (en) * | 2001-03-13 | 2002-09-25 | Canon Inc | Optical glass element press forming die and optical glass element |
| JP2003320552A (en) * | 2002-04-30 | 2003-11-11 | Mitsubishi Materials Corp | Mold assembly for molding optical disk |
| CN2749881Y (en) * | 2004-04-08 | 2006-01-04 | 鸿富锦精密工业（深圳）有限公司 | Module with superhard coating |
-
2004
- 2004-06-07 CN CNB2004100276319A patent/CN100370060C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6043461A (en) * | 1983-08-18 | 1985-03-08 | Toshiba Tungaloy Co Ltd | Boron nitride-base sintered body having high-density phase and its manufacture |
| JPH04331798A (en) * | 1991-05-02 | 1992-11-19 | Toyota Central Res & Dev Lab Inc | Method of forming diamond film |
| JP2002274867A (en) * | 2001-03-13 | 2002-09-25 | Canon Inc | Optical glass element press forming die and optical glass element |
| JP2003320552A (en) * | 2002-04-30 | 2003-11-11 | Mitsubishi Materials Corp | Mold assembly for molding optical disk |
| CN2749881Y (en) * | 2004-04-08 | 2006-01-04 | 鸿富锦精密工业（深圳）有限公司 | Module with superhard coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1706983A (en) | 2005-12-14 |
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Granted publication date: 20080220 Termination date: 20150607 |
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| EXPY | Termination of patent right or utility model |