CN108751722A - A kind of computer hard disk substrate devitrified glass and preparation method - Google Patents
A kind of computer hard disk substrate devitrified glass and preparation method Download PDFInfo
- Publication number
- CN108751722A CN108751722A CN201810923896.9A CN201810923896A CN108751722A CN 108751722 A CN108751722 A CN 108751722A CN 201810923896 A CN201810923896 A CN 201810923896A CN 108751722 A CN108751722 A CN 108751722A
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- China
- Prior art keywords
- devitrified glass
- glass
- raw material
- hard disk
- disk substrate
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0063—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing waste materials, e.g. slags
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
- C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0036—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents
Abstract
The invention discloses a kind of computer hard disk substrate devitrified glass and preparation methods,Structure of Glass Ceramic includes devitrified glass block,Devitrified glass block side is pasted with air filtration item,Moisture seal item is bonded with by buffered silica gel layer on the outside of air filtration item,Preparation method includes preparing raw material,Configure raw material,Mixed raw material,Again raw material is sent into melt in crucible and be melted,Then water quenching operation is carried out,It places into grinder and grinds,It is sintered again and Crystallizing treatment,Obtain molding devitrified glass,Devitrified glass is polished,Cutting process,The air filtration item installed on the outside of devitrified glass,Moisture seal item can avoid extraneous gas respectively,Moisture,Moisture enters devitrified glass,Thermal grease layer,Buffered silica gel layer can carry out heat radiation protection to devitrified glass,Buffer protection,Extend service life,In polishing treatment step,The auxiliary polishing action of Nano diamond improves polishing efficiency,Increase the surface smoothness of devitrified glass.
Description
Technical field
The present invention relates to hard disk microcrystal glass area, specially a kind of computer hard disk substrate devitrified glass and preparation side
Method.
Background technology
As hard disc of computer develops to directions such as large capacity, high rotating speed, small sizes, the requirement to hard disk substrate is increasingly
Height, such as elasticity modulus>110GPa, surface roughness<05nm.
Currently, the material of manufacture hard disk substrate mainly has NiP/Al alloys, strengthened glass and devitrified glass.NiP/Al alloys
Because of the influence of its ductility, there are problems that warpage, deformation, will be gradually crystallite so being difficult to out the surface of high smooth
Glass is substituted；Devitrified glass is a kind of polycrystalline solids for forming the glass of specific composition after heat treatment process crystallization,
It has many advantages, such as that impact resistance, indeformable, surface is smooth, glacing flatness and high mechanical strength.But the knot in the microcosmic composition of the material
Structure, the chemical composition of crystalline phase and glass phase are different from, and microhardness is very high, it is considered that it is more difficult to process go out Subnano-class
Smooth surface.
Hard disk crystallite glass substrate is a kind of novel discs sill, and the record of hard disk can be improved using crystallite glass substrate
Density and access speed.Compared with aluminum substrate general at present, crystallite glass substrate is in the mechanical performances such as hardness, intensity and mechanics
It has a clear superiority in index, is the developing direction of hard disk substrate.
But the devitrified glass of existing hard disk substrate has the following defects：
(1) structure is relatively simple, and devitrified glass because intensity itself it is not high, therefore when hard disk is by external impacts
Be easily broken, and devitrified glass inside hard disk be in sealing state when, be unfavorable for the heat dissipation of devitrified glass, to influence hard disk
Reading and storage speed；
(2) after devitrified glass makes molding, surface irregularity, it usually needs polishing, the polishing agent of chemical polishing compare
Costliness, cost is higher, and the quality that common sanding and polishing disk is polished devitrified glass is also bad, influences hard disk total quality
And performance.
Invention content
In order to overcome the shortcomings of prior art, a kind of computer hard disk substrate devitrified glass of present invention offer and system
Preparation Method, air filtration item, the moisture seal item that devitrified glass outside is installed can avoid extraneous gas, moisture, moisture respectively
Into devitrified glass, thermal grease layer, buffered silica gel layer can carry out heat radiation protection, buffer protection to devitrified glass, and extending makes
With the service life, in polishing treatment step, the auxiliary polishing action of Nano diamond improves polishing efficiency, increases devitrified glass
Surface smoothness can effectively solve the problem that the problem of background technology proposes.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of computer hard disk substrate devitrified glass, including devitrified glass block, devitrified glass block side are pasted with
Air filtration item, the air filtration item outside are bonded with moisture seal item by buffered silica gel layer.
Further, the air filtration item is sticked to the side of devitrified glass block, the air mistake by thermal grease layer
It includes filtering sliver to filter item, and the filtering sliver is embedded with several active carbon particles.
Further, the end section of the moisture seal item is in " Fang " shape, and the side of moisture seal item passes through viscose glue
Layer is connected with micro glass block.
Further, the moisture seal item is equipped with rectangular straight slot.
A kind of preparation method of computer hard disk substrate devitrified glass is that primary raw material makes crystallite glass using iron tailings
The raw material of glass, devitrified glass is divided by weight percentage：Tailing 63.3%, aluminium oxide 2.6%, magnesite 10.2%, calcite
16.1%, boric acid 2.6%, barium carbonate 1.4%, soda ash 3.8%, and the chemical composition of the devitrified glass raw material made by iron tailings
Percentage is：SiO257.1%, Al2O37.9%, B2O21.8%, Fe2O36.5%, CaO12.8%, MgO7.0%,
BaO1.4%, n=Na204.5%, K2O 1.0%.
Further, the production process of devitrified glass includes the following steps：
S100, configuration raw material, the various batches of raw material are homogenously mixed together；
S200, mixed raw material is sent into melt in crucible and is melted；
S300, the raw material of fusing is sent into granulating unit progress water quenching operation, the raw material after water quenching places into grinder
Grinding；
S400, raw material is sintered and Crystallizing treatment, obtains molding devitrified glass；
S500, devitrified glass is processed by shot blasting, finally devitrified glass is cut, make devitrified glass shape and
Size meets the requirement of devitrified glass on hard disk substrate.
Further, the melt raw material operating procedure is as follows：
S201, alumina crucible is put into silicon molybdenum rod furnace；
S202, the temperature of silicon molybdenum rod furnace is risen to 1300 DEG C；
S203, mixed raw material equivalent is first divided into several pieces, first part of raw material is then put into crucible, every 20 minutes later
Add a raw material into crucible, until all raw materials are put into crucible；
S204, the temperature of silicon molybdenum rod furnace is risen to 1500 DEG C, constant temperature keeps 40-70min, and glass metal is made to clarify.
Further, the water quenching operation includes the following steps：
S301, the glass metal of fusing is guided into granulating unit, glass metal quenching is in by flowing water in granulating unit
The particle of 2-6mm sizes；
S302, particle is put into dryer and screening machine and is dried and is sieved, then by glass particle with certain matter
Amount and thickness are layered on the framed interior of refractory material making, are sent into blast furnace and are sintered.
Further, the sintering and Crystallizing treatment include the following steps：
After S401, glass particle are with framed entrance high temperature furnace, blast furnace is made to be risen to from room temperature with the heating rate of 300 DEG C/h
800-960 DEG C, temperature 2h is kept, makes glass particle sintering and coring；
S402, the temperature of blast furnace risen into 1100-1150 DEG C of held for some time again, glass surface is made to shakeout and crystallization；
S403, keep blast furnace flame-out, and make formed glass with blast furnace natural cooling, after being cooled to room temperature, keep micro glass de-
Mould.
Further, the polishing treatment includes the following steps：
S501, it applies last layer in the burnishing surface of devitrified glass and contains the polishing agent of Nano diamond particle；
S502, the underface that devitrified glass is fixed on to polishing pad, keep the burnishing surface and polishing pad of devitrified glass or more right
It answers；
S503, polishing disc spins simultaneously polish to the polishing flour milling of devitrified glass；
S504, having polished one is cleaned and dried in face of devitrified glass, then again to other burnishing surfaces of devitrified glass
It polishes.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) air filtration item, the moisture seal item installed on the outside of devitrified glass of the invention can avoid extraneous gas respectively
Body, moisture, moisture enter devitrified glass, to ensure that the safe working environment of devitrified glass, and thermal grease layer, buffering
Layer of silica gel can carry out heat radiation protection, buffer protection to devitrified glass, and devitrified glass is safer in hard disk, and service life is more
It is long；
(2) in the polishing treatment step to devitrified glass of the invention, suitable nanometer is uniformly first added in polishing agent
Then diamond particles make polishing agent that Nano diamond to be sticked on the burnishing surface of devitrified glass, diamond can play auxiliary and beat
The effect of mill can not only improve sanding and polishing efficiency, and since ultra-fine, the superhard characteristic of Nano diamond keeps polishing fine
Spend higher, devitrified glass surface more smooth.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the devitrified glass of the present invention；
Fig. 2 is the preparation method flow chart of the devitrified glass of the present invention.
Figure label：
1- devitrified glass blocks；2- air filtration items；3- buffered silica gel layers；4- moisture seal items；5- thermal grease layers；6- is viscous
Glue-line；7- rectangular straight slot；
21- filters sliver；22- active carbon particles.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, the present invention provides a kind of computer hard disk substrate devitrified glass, a kind of computer is hard
Disc board devitrified glass, including devitrified glass block 1,1 side of devitrified glass block are pasted with air filtration item 2, air filtration item 2
The side of devitrified glass block 1 is sticked to by thermal grease layer 5, thermal grease layer 5 generates convenient for devitrified glass because of hard disk operational
Heat distribute, moisture seal item 4 be equipped with rectangular straight slot 7, convenient for heat dissipation.
Air filtration item 2 includes filtering sliver 21, and filtering sliver 21 is embedded with several active carbon particles 22.Filter sliver 21
The etchant gas in air can be adsorbed with active carbon particle 22, moisture, dust in air can be also absorbed, so as to avoid micro-
Crystal glass is contaminated, corrosion or moist, to ensure that the superperformance of devitrified glass, and filters sliver 21 and has been also convenient for dissipating
Heat.
2 outside of air filtration item is bonded with moisture seal item 4 by buffered silica gel layer 3, and buffered silica gel layer 3 can give crystallite glass
Glass provides certain buffer protection, when hard disk is subjected to impact power or vibration force, devitrified glass will not fragmentation, extend glass
The service life of glass.
Moisture seal item 4 prevents moisture from invaded outside hard disk to making glass condensate on microcrystal glass plate, so as to avoid
The abnormal situation of devitrified glass work.The end section of moisture seal item 4 is in " Fang " shape, and the side of moisture seal item 4 is logical
It crosses adhesive-layer 6 with micro glass block 1 to be connected, ensure that the connective stability of moisture seal item 4, increase waterproof protective face
Product.
In addition the present invention also provides a kind of preparation method of computer hard disk substrate devitrified glass, the lifes of devitrified glass
Production process includes the following steps：
S100, configuration raw material, the various batches of raw material are homogenously mixed together, and are primary raw material system using iron tailings
Make devitrified glass, the raw material of devitrified glass is divided by weight percentage：Tailing 63.3%, aluminium oxide 2.6%, magnesite
10.2%, calcite 16.1%, boric acid 2.6%, barium carbonate 1.4%, soda ash 3.8%, and the devitrified glass made by iron tailings
The chemical composition percentage of raw material is：SiO257.1%, Al2O37.9%, B2O21.8%, Fe2O36.5%, CaO12.8%,
MgO7.0%, BaO1.4%, n=Na204.5%, K2O 1.0%.
S200, mixed raw material is sent into melt in crucible and is melted, melt raw material operating procedure is as follows：
S201, alumina crucible is put into silicon molybdenum rod furnace；
S202, the temperature of silicon molybdenum rod furnace is risen to 1300 DEG C；
S203, mixed raw material equivalent is first divided into several pieces, first part of raw material is then put into crucible, every 20 minutes later
Add a raw material into crucible, until all raw materials are put into crucible；
S204, the temperature of silicon molybdenum rod furnace is risen to 1500 DEG C, constant temperature keeps 40-70min, and glass metal is made to clarify.
S300, the raw material of fusing is sent into granulating unit progress water quenching operation, the raw material after water quenching places into grinder
Grinding, water quenching operation include the following steps：
S301, the glass metal of fusing is guided into granulating unit, glass metal quenching is in by flowing water in granulating unit
The particle of 2-6mm sizes, then grinds glass particle in grinder smooth, and glass particle is made to be more easy to be sintered；
S302, particle is put into dryer and screening machine and is dried and is sieved, then by glass particle with certain matter
Amount and thickness are layered on the framed interior of refractory material making, are sent into blast furnace and are sintered.
S400, raw material is sintered and Crystallizing treatment, obtains molding devitrified glass, sintering and Crystallizing treatment include such as
Lower step：
After S401, glass particle are with framed entrance high temperature furnace, blast furnace is made to be risen to from room temperature with the heating rate of 300 DEG C/h
800-960 DEG C, temperature 2h is kept, makes glass particle sintering and coring；
S402, the temperature of blast furnace risen into 1100-1150 DEG C of held for some time again, glass surface is made to shakeout and crystallization；
S403, keep blast furnace flame-out, and make formed glass with blast furnace natural cooling, after being cooled to room temperature, keep micro glass de-
Mould.
S500, devitrified glass is processed by shot blasting, finally devitrified glass is cut, make devitrified glass shape and
Size meets the requirement of devitrified glass on hard disk substrate, and polishing treatment includes the following steps：
S501, it applies last layer in the burnishing surface of devitrified glass and contains the polishing agent of Nano diamond particle；
S502, the underface that devitrified glass is fixed on to polishing pad, keep the burnishing surface and polishing pad of devitrified glass or more right
It answers；
S503, polishing disc spins simultaneously polish to the polishing flour milling of devitrified glass；
S504, having polished one is cleaned and dried in face of devitrified glass, then again to other burnishing surfaces of devitrified glass
It polishes.
The production stage of devitrified glass provided by the invention can be substantially summarized as：The screening of raw material and outfit mix, are molten
Change raw material, water quenching, grinding, sintering, crystallization, polishing and cutting.In place of the present invention is to the maximum change of devitrified glass production method
I.e. to the polishing treatment step of devitrified glass, suitable Nano diamond particle is uniformly first added in polishing agent, then makes throwing
Nano diamond is sticked on the burnishing surface of devitrified glass by photo etching, when devitrified glass receives polishing pad sanding and polishing, gold
Hard rock can also play the role of auxiliary polishing, can not only improve sanding and polishing efficiency, and ultra-fine, super due to Nano diamond
Hard characteristic makes the polished surface roughness of devitrified glass reach 1nm, and to make polishing fineness higher, devitrified glass surface is more
It is smooth.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of computer hard disk substrate devitrified glass, including devitrified glass block (1), it is characterised in that：The devitrified glass
Block (1) side is pasted with air filtration item (2), is bonded with by buffered silica gel layer (3) on the outside of the air filtration item (2) moisture-proof
Sealing strip (4).
2. a kind of computer hard disk substrate devitrified glass according to claim 1, it is characterised in that：The air filtration
Item (2) is sticked to the side of devitrified glass block (1) by thermal grease layer (5), and the air filtration item (2) includes filtering sliver
(21), the filtering sliver (21) is embedded with several active carbon particles (22).
3. a kind of computer hard disk substrate devitrified glass according to claim 1, it is characterised in that：The moisture seal
The end section of item (4) is in " Fang " shape, and the side of moisture seal item (4) is connected by adhesive-layer (6) with micro glass block (1)
It connects.
4. a kind of computer hard disk substrate devitrified glass according to claim 1, it is characterised in that：The moisture seal
Item (4) is equipped with rectangular straight slot (7).
5. a kind of preparation method of computer hard disk substrate devitrified glass, it is characterised in that：It is main including the use of iron tailings
Raw material makes devitrified glass, and the raw material of devitrified glass is divided by weight percentage：Tailing 63.3%, aluminium oxide 2.6%, magnesite
10.2%, calcite 16.1%, boric acid 2.6%, barium carbonate 1.4%, soda ash 3.8%, and the devitrified glass made by iron tailings
The chemical composition percentage of raw material is：SiO257.1%, Al2O37.9%, B2O21.8%, Fe2O36.5%, CaO12.8%,
MgO7.0%, BaO1.4%, n=Na204.5%, K2O 1.0%.
6. a kind of preparation method of computer hard disk substrate devitrified glass according to claim 5, it is characterised in that：It is micro-
The production process of crystal glass includes the following steps：
S100, configuration raw material, the various batches of raw material are homogenously mixed together；
S200, mixed raw material is sent into melt in crucible and is melted；
S300, the raw material of fusing is sent into granulating unit progress water quenching operation, the raw material after water quenching, which places into grinder, to be ground；
S400, raw material is sintered and Crystallizing treatment, obtains molding devitrified glass；
S500, devitrified glass is processed by shot blasting, finally devitrified glass is cut, make the shape and size of devitrified glass
Meet the requirement of devitrified glass on hard disk substrate.
7. a kind of preparation method of computer hard disk substrate devitrified glass according to claim 6, it is characterised in that：Institute
It is as follows to state melt raw material operating procedure：
S201, alumina crucible is put into silicon molybdenum rod furnace；
S202, the temperature of silicon molybdenum rod furnace is risen to 1300 DEG C；
S203, mixed raw material equivalent is first divided into several pieces, first part of raw material is then put into crucible, every 20 minutes later to earthenware
Add a raw material in crucible, until all raw materials are put into crucible；
S204, the temperature of silicon molybdenum rod furnace is risen to 1500 DEG C, constant temperature keeps 40-70min, and glass metal is made to clarify.
8. a kind of preparation method of computer hard disk substrate devitrified glass according to claim 6, it is characterised in that：Institute
Water quenching operation is stated to include the following steps：
S301, the glass metal of fusing is guided into granulating unit, glass metal quenching is in 2-6mm by flowing water in granulating unit
The particle of size；
S302, particle is put into dryer and screening machine and is dried and is sieved, then by glass particle with certain mass and
Thickness is layered on the framed interior of refractory material making, is sent into blast furnace and is sintered.
9. a kind of preparation method of computer hard disk substrate devitrified glass according to claim 6, it is characterised in that：Institute
It states sintering and Crystallizing treatment includes the following steps：
After S401, glass particle are with framed entrance high temperature furnace, blast furnace is made to rise to 800- from room temperature with the heating rate of 300 DEG C/h
960 DEG C, temperature 2h is kept, makes glass particle sintering and coring；
S402, the temperature of blast furnace risen into 1100-1150 DEG C of held for some time again, glass surface is made to shakeout and crystallization；
S403, keep blast furnace flame-out, and make formed glass with blast furnace natural cooling, after being cooled to room temperature, micro glass is made to demould.
10. a kind of preparation method of computer hard disk substrate devitrified glass according to claim 6, it is characterised in that：
The polishing treatment includes the following steps：
S501, it applies last layer in the burnishing surface of devitrified glass and contains the polishing agent of Nano diamond particle；
S502, the underface that devitrified glass is fixed on to polishing pad keep the burnishing surface of devitrified glass corresponding up and down with polishing pad；
S503, polishing disc spins simultaneously polish to the polishing flour milling of devitrified glass；
S504, having polished one is cleaned and dried in face of devitrified glass, is then carried out again to other burnishing surfaces of devitrified glass
Polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923896.9A CN108751722A (en) | 2018-08-11 | 2018-08-11 | A kind of computer hard disk substrate devitrified glass and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923896.9A CN108751722A (en) | 2018-08-11 | 2018-08-11 | A kind of computer hard disk substrate devitrified glass and preparation method |
Publications (1)
| Publication Number | Publication Date |
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| CN108751722A true CN108751722A (en) | 2018-11-06 |
Family
ID=63969843
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| CN201810923896.9A Pending CN108751722A (en) | 2018-08-11 | 2018-08-11 | A kind of computer hard disk substrate devitrified glass and preparation method |
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Cited By (1)
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| CN114129001A (en) * | 2021-11-27 | 2022-03-04 | 朱奇威 | Furniture component with soft wood mixed multi-layer board and single-sided paster |
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Application publication date: 20181106 |