CN2749881Y - Module with superhard coating - Google Patents
Module with superhard coating Download PDFInfo
- Publication number
- CN2749881Y CN2749881Y CNU2004200446207U CN200420044620U CN2749881Y CN 2749881 Y CN2749881 Y CN 2749881Y CN U2004200446207 U CNU2004200446207 U CN U2004200446207U CN 200420044620 U CN200420044620 U CN 200420044620U CN 2749881 Y CN2749881 Y CN 2749881Y
- Authority
- CN
- China
- Prior art keywords
- mould
- boron nitride
- superhard
- mold pressing
- plated film
- 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 - Lifetime
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- 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)
Abstract
The utility model relates to a mould used for molding glass products, comprising a mould basal body with a mold pressing surface and a superhard thin film which covers the mold pressing surface. The superhard thin film is composed of an amorphous boron nitride basal body and cubic boron nitride microparticles distributed inside the amorphous boron nitride basal body. The utility model is characterized in that the amorphous boron nitride has a lubricating performance, which is good for demoulding; the particle diameters of the cubic boron nitride microparticles are of nanometer stage with strong hardness, which can enhance mechanical strength and hardness. Additionally, the superhard thin film can also prevent the metallic element of the mould basal body from diffusing outwards.
Description
[technical field]
The utility model relates to a kind of mould that is used for mold pressing opticglass, relates in particular to the mould 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 is for chemical stability, the thermal shock resistance of mould, and physical strength, surface flatness etc. require very high.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 die matrix is to external diffusion, and it is real in necessary can not stick together the mould of glass during the demoulding.
[utility model content]
Be to solve the problems referred to above of known techniques, the purpose of this utility model be to provide a kind of anti-oxidation, physical strength is high, can prevent the metallic element diffusion and the mould of the demoulding easily.
For realizing the purpose of this utility model, the utility model provides a kind of mould with superhard plated film, and it comprises:
Die matrix, its have one with desire the corresponding mold pressing surface of molded product; And be covered in the superhard rete of this mold pressing surface.
This die matrix is by pottery, sintering metal or the manufacturing of superhard alloy material, comprises SiC, Si, Si
3N
4, ZrO
2, Al
2O
3, TiN, TiO
2, TiC, B
4C, WC, W or WC-Co.
Superhard rete is that boron nitride (Boron Nitride) material deposition forms, and comprises that amorphousness boron nitride matrix and cubic boron nitride Particle Distribution are in this amorphousness boron nitride matrix.Described amorphousness boron nitride matrix is a continuous distribution, and the cubic boron nitride particulate is discrete or partial continuous is distributed in wherein, and the particle diameter of cubic boron nitride particulate is a nano level.
Above-mentioned superhard rete can form by electric pulp vapour deposition process deposition.
With respect to prior art, the utility model forms the superhard rete of boron nitride material on the die matrix mold pressing surface of high rigidity, utilizes the good characteristics of amorphousness boron nitride oilness, makes mould of the present utility model in the mold pressing processing procedure, can not stick together the demoulding easily with the opticglass product; And cubic boron nitride particulate extreme hardness, can improve the physical strength of mold pressing surface; In addition, this superhard rete also can prevent the metallic element diffusion of die matrix, thereby avoids glassy product is produced detrimentally affect.
[description of drawings]
Fig. 1 is the synoptic diagram that the utility model first embodiment is used for the mould of mold pressing aspherics glassy product;
Fig. 2 is the synoptic diagram that the utility model second embodiment is used for the mould of molded surface opticglass product.
[embodiment]
The utility model is described in further detail below in conjunction with accompanying drawing.
See also Fig. 1, the utility model first embodiment provides a kind of film benevolence 10 that is used for mold pressing aspherics glassy product, the thin film layer 14 that it comprises a die matrix 12 and is formed at die matrix 12 mold pressing surface.This die matrix 12 can utilize following pottery, sintering metal or superhard alloy to get through the sintering manufacturing for main raw: SiC, Si, Si
3N
4, ZrO
2, Al
2O
3, TiN, TiO
2, TiC, B
4C, WC, W or WC-Co.The mold pressing surface of die 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 die matrix 12, and it is to be formed by the boron nitride material deposition, comprises amorphousness boron nitride 16 (Amorphous Boron Nitride) and cubic boron nitride particulate 17 (Cubic Boron Nitride).Amorphousness boron nitride 16 is successive layerss, can be used as the matrix that cubic boron nitride particulate 17 distributes; Thirty years of age prismatic crystal particulate boron nitride 17 is discrete or partial continuous is distributed in the matrix that whole amorphousness boron nitride 16 forms, and its content accounts for 10%～60% (molar percentage) of thin film layer 14 total amounts.The particle diameter of cubic boron nitride particulate 17 is nano levels, 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 utility model not only can be used for the mould of mold pressing aspherics glassy product, also can be applicable to the mould of the molded product of other different shapes, different purposes.See also Fig. 2, the utility model second embodiment provides a kind of mould 20 that is used for molded surface opticglass product, and it comprises that one has the die matrix 22 of smooth flat, and is covered in the thin film layer 24 of this smooth flat.This die matrix 22 can utilize following pottery, sintering metal or superhard alloy to get through the sintering manufacturing for main raw: SiC, Si, Si
3N
4, ZrO
2, Al
2O
3, TiN, TiO
2, TiC, B
4C, WC, W or WC-Co.Thin film layer 24 is to be formed by the boron nitride material deposition, comprises amorphousness boron nitride 26 and cubic boron nitride particulate 27.Amorphousness boron nitride 26 is successive layerss, can be used as the matrix that cubic boron nitride particulate 27 distributes; Thirty years of age prismatic crystal particulate boron nitride 27 is discrete or partial continuous is distributed in the matrix that whole amorphousness boron nitride 26 forms, and its content accounts for 10%～60% (molar percentage) of thin film layer 24 total amounts.The particle diameter of cubic boron nitride particulate 27 is nano levels, preferably in 5～100 nanometer range.And the thickness of thin film layer 24 can be at 1 micron to 100 micrometer ranges.
In above-mentioned two specific embodiments, die matrix 12 and 22 is to be prepared from by sintering or other working method, thin film layer 14 and 24 can be by electric pulp vapour deposition process (Plasma Chemical VaporDeposition) formation of deposits, for example microwave electricity pulp vapour deposition process (Microwave PlasmaChemical Vapor Deposition).
The mould 10 (20) of the utility model, its die 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), and it is formed by being difficult for oxidized boron nitride material, comprises the cubic boron nitride particulate 17 (27) of softer amorphousness boron nitride 16 (26) and high rigidity, because the atom of amorphousness boron nitride 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) are little, both can strengthen the physical strength of 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 die matrix 12 (22) to permeate, diffuse to thin film layer 14 (24) outsides, avoids these metallic elements to make the glass variable color, influences the opticglass quality.In sum, the mould with superhard plated film of the present utility model have high mechanical strength, anti-oxidant, chemical stability is good and the characteristics of the easy demoulding.
Claims (8)
1. mould with superhard plated film, it comprises: a die matrix, it has a mold pressing surface; And a superhard rete is covered in the mold pressing surface of this die matrix; It is characterized in that: this superhard rete comprises that amorphousness boron nitride matrix and cubic boron nitride Particle Distribution are in this amorphousness boron nitride matrix.
2. the mould with superhard plated film as claimed in claim 1 is characterized in that this die matrix is by SiC, Si, Si
3N
4, ZrO
2, Al
2O
3, TiN, TiO
2, TiC, B
4C, WC, W or WC-Co make.
3. the mould with superhard plated film as claimed in claim 1, it is characterized in that this superhard film layer thickness be 1 micron to 100 micrometer ranges.
4. the mould with superhard plated film as claimed in claim 1, the molar percentage that it is characterized in that this cubic boron nitride particulate is 10%～60%.
5. the mould with superhard plated film as claimed in claim 1, the particle diameter that it is characterized in that this cubic boron nitride particulate is a nano level.
6. the mould with superhard plated film as claimed in claim 5, the particle diameter that it is characterized in that this cubic boron nitride particulate is in 5～100 nanometer range.
7. the mould with superhard plated film as claimed in claim 1, the mold pressing surface that it is characterized in that this mould is an aspheric surface.
8. the mould with superhard plated film as claimed in claim 1, the mold pressing surface that it is characterized in that this mould is the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200446207U CN2749881Y (en) | 2004-04-08 | 2004-04-08 | Module with superhard coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200446207U CN2749881Y (en) | 2004-04-08 | 2004-04-08 | Module with superhard coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2749881Y true CN2749881Y (en) | 2006-01-04 |
Family
ID=35823270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200446207U Expired - Lifetime CN2749881Y (en) | 2004-04-08 | 2004-04-08 | Module with superhard coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2749881Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370060C (en) * | 2004-06-07 | 2008-02-20 | 鸿富锦精密工业（深圳）有限公司 | Mold with super hard coating |
| CN102390920A (en) * | 2011-08-09 | 2012-03-28 | 苏州卡波尔模具科技有限公司 | Moulded glass mould |
| CN110482852A (en) * | 2019-08-29 | 2019-11-22 | 中国兵器工业第五九研究所 | Glass die coating and preparation method thereof, application, mold |
| CN114656133A (en) * | 2022-05-23 | 2022-06-24 | 山东大学 | Anti-adhesion and anti-attrition ultra-precise mold, machining system and method |
-
2004
- 2004-04-08 CN CNU2004200446207U patent/CN2749881Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370060C (en) * | 2004-06-07 | 2008-02-20 | 鸿富锦精密工业（深圳）有限公司 | Mold with super hard coating |
| CN102390920A (en) * | 2011-08-09 | 2012-03-28 | 苏州卡波尔模具科技有限公司 | Moulded glass mould |
| CN110482852A (en) * | 2019-08-29 | 2019-11-22 | 中国兵器工业第五九研究所 | Glass die coating and preparation method thereof, application, mold |
| CN114656133A (en) * | 2022-05-23 | 2022-06-24 | 山东大学 | Anti-adhesion and anti-attrition ultra-precise mold, machining system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140408 Granted publication date: 20060104 |