CN107500771A - Glass bending mould ceramics and preparation method thereof - Google Patents
Glass bending mould ceramics and preparation method thereof Download PDFInfo
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- CN107500771A CN107500771A CN201710555310.3A CN201710555310A CN107500771A CN 107500771 A CN107500771 A CN 107500771A CN 201710555310 A CN201710555310 A CN 201710555310A CN 107500771 A CN107500771 A CN 107500771A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3821—Boron carbides
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3891—Silicides, e.g. molybdenum disilicide, iron silicide
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
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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
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- 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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Abstract
The invention provides a kind of glass bending mould ceramics and preparation method thereof, glass bending mould ceramics include ceramic matrix and silicon, and the percentage by weight of the silicon is 0.3% 35%.The glass bending mould ceramics of the present invention, add elemental silicon, and preferred its preparation method, improve compactness, dimensional stability and the abrasion resistance properties of glass bending mould ceramics, both service life is extended, in turn ensure that higher glass product yield.In addition, the addition of silicon makes the glass bending mould ceramics of the present invention possess preferable electric machining characteristic, processing cost is reduced, improves the surface quality of converted products.
Description
Technical field
The invention belongs to the technical field of material, more particularly to a kind of glass bending mould ceramics and its preparation side
Method.
Background technology
In recent years, with the fast development of consumption electronic product and 5G communication times at hand, glass rear shell is made
It is increasingly strong for important outward appearance component, its demand.Because glass optical component requires very high precision, therefore, in order to
Can by extrusion forming stably obtain glass elements, it is desirable to glass bending mould it is excellent with Ceramic manufacturing and
There is excellent thermal conductivity, oxidative resistance, the wear-resisting corrosion resistance, right of undermining under hot conditions when being press-formed to glass
Glass presentation inertia, demoulding are excellent, so as to easily high accuracy and smoothly pressurized plane are processed.
Glass bending mould of the prior art ceramic generally use carborundum and graphite, although graphite has easily
The advantages that intensity is high under processing, hot conditions, thermal conductivity is good, but graphite is oxidizable under the high temperature conditions, not wear-resistant grade lacks
Fall into the service life and glass formed precision for having had a strong impact on glass mold.
The content of the invention
The technical problems to be solved by the invention are used for glass bending mould of the prior art ceramics
A kind of technological deficiency that service life caused by when carborundum and graphite is short and glass formed precision is low, there is provided glass bending shaping
Mould ceramics.
Technical scheme is used by the present invention solves above-mentioned technical problem：
A kind of glass bending mould ceramics are provided, its component includes ceramic matrix and silicon, the weight hundred of the silicon
It is 0.3%-35% to divide ratio, and the ceramic matrix includes carborundum.
Preferably, the percentage by weight of the silicon is 5%-20%.
Preferably, the ceramic matrix also includes molybdenum disilicide and/or boron carbide, the weight of the molybdenum disilicide and boron carbide
Measure percentage and be no more than 5%.
Preferably, the relative density of the glass bending mould ceramics is 95% or more.
Preferably, the relative density of the glass bending mould ceramics is 98% or more.
The present invention also provides a kind of preparation method of glass bending mould ceramics：Using ceramic powder as raw material, use
Dry pressure formed, slip casting method shaping, isostatic pressing method shaping, one or more methods of collosol and gel moldings formed therefrom, wherein described
Ceramic powder includes ceramic matrix and silicon, and the percentage by weight of the silicon is 0.3%-35%, and the ceramic matrix includes carborundum.
Preferably, the collosol and gel moldings formed therefrom includes：The ceramic powder is mixed with deionized water and organic monomer
Ball milling 5-10h；Add initiator and continue mixing and ball milling 5-60min；It is placed in after degasification in mould under 30-80 DEG C of temperature conditionss
Gelation 30-120min, obtains ceramic blank after cooling, and the blank obtains glass after drying, finishing, vacuum-sintering
Bending mould ceramics.
Preferably, it is described it is dry pressure formed including：By the ceramic powder and organic solvent mixing and ball milling 5-10h, after be placed in
Compressing to obtain ceramic body in mould, the ceramic body obtains glass bending shaping after drying pre-burning, vacuum-sintering
Mould ceramics.
Preferably, the percentage by weight of the silicon is 5%-20%.
Preferably, the ceramic matrix also includes molybdenum disilicide and/or boron carbide, the weight of the molybdenum disilicide and boron carbide
Measure percentage and be no more than 5%.
The glass bending mould ceramics of the present invention, add elemental silicon, improve the glass bending mould
With ceramics compactness, dimensional stability and abrasion resistance properties so that the present invention glass bending mould with ceramics have
There are preferable abrasion resistance properties, both extend service life, in turn ensure that higher glass product yield.In addition, the addition of silicon
The glass bending mould ceramics of the present invention is possessed preferable electric machining characteristic, be allowed to carry out conventional
Machining, moreover it is possible to carry out electrical discharge machining, greatly reduce processing cost, improve the surface quality of converted products.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Embodiment, the present invention is described in further detail.It should be appreciated that specific embodiment described herein is only solving
The present invention is released, is not intended to limit the present invention.
The invention discloses a kind of glass bending mould ceramics, its component includes ceramic matrix and silicon, the silicon
Percentage by weight be 0.3%-35%, the ceramic matrix includes carborundum.
Silicon is added in technical scheme, because elemental silicon has good electric conductivity, make the glass bending into
Pattern tool is provided with preferable electric machining characteristic with ceramics.But the too high levels of silicon, can cause poor ceramics toughness, poor thermal conductivity and
It is easy to damaged, can possesses it when the glass bending mould is 0.5%-35% with the percentage by weight of silicon in ceramics
Good compactness, dimensional stability and wear resistance.
Wherein, the percentage by weight of the silicon is that 5%-20% effects can be more preferable.
The ceramic matrix also includes molybdenum disilicide and/or boron carbide.The addition of molybdenum disilicide can further improve ceramics
Conductive characteristic, be allowed to be more readily processed.Boron carbide can further improve the wear resistance and dimensional stability of ceramics, simultaneously
Boron carbide can reduce sintering temperature, improve the consistency of sintering as sintering aid.
The percentage by weight of wherein described molybdenum disilicide and boron carbide is no more than 5%.
It should be noted that in the case where not influenceing the technology of the present invention effect, this glass bending mould ceramics
In also allow to have other carbide in addition to carborundum and boron carbide of percentage by weight total amount no more than 5% or other
The one or more of ceramic composition that anticipate are present, such as：Aluminum oxide, silicon nitride, molybdenum carbide, tungsten carbide etc..
In order to avoid glass bending mould ceramics cause glass in forming process the defects of caused stomata
Glass product is bad, and the relative density of glass bending mould ceramics provided by the invention is 95% or more, and then is ensured
Glass product has fine surface quality and higher finish, is easy to the following process of glass product.
In a preferred embodiment, the relative density of the glass bending mould ceramics is 98% or more.
Relative density is the ratio of density and solid density.The assay method reference standard number of its Midst density is GB4472-84 chemical industry
Product density, relative density determination general rule, the glass bending mould are the theoretical close of each component with ceramic solid density
Degree and percentage by volume product and.
Another embodiment of the present invention also provides a kind of preparation method of above-mentioned glass bending mould ceramics：With ceramics
Powder is raw material, and use is dry pressure formed, slip casting method is molded, isostatic pressing method is molded, the one or more of collosol and gel moldings formed therefrom
Method, wherein the ceramic powder includes ceramic matrix and silicon, the percentage by weight of the silicon is 0.3%-35%, the ceramic base
Material includes carborundum.
Wherein collosol and gel injection molding includes：By the ceramic powder, deionized water and organic monomer mixing and ball milling 5-10h；
Add initiator and continue mixing and ball milling 5-60min；The gelation 30- under 30-80 DEG C of temperature conditionss is placed in mould after degasification
120min, the blank of glass bending mould is obtained after cooling, and the blank must after drying, finishing, vacuum-sintering
To glass bending mould.
Wherein dry pressing includes：By the ceramic powder and organic solvent mixing and ball milling 5-10h, after be placed in mould,
Compressing to obtain ceramic body, the ceramic body obtains glass bending mould after drying pre-burning, vacuum-sintering.
The percentage by weight of the silicon is 5%-20%.Ceramic matrix also includes molybdenum disilicide and/or boron carbide, and described two
The percentage by weight of molybdenum silicide and boron carbide is no more than 5%.
Collosol and gel injection molding is preferable implementation, because there is collosol and gel injection molding component to be uniformly dispersed, material
The features such as purity is high, physical and chemical performance is stable, compactness is high is expected, so as to significantly improve adding for glass bending mould
Work yield and shaping yield.It is of course also possible to the preparation that different preparation methods carries out glass bending mould is applied in combination.
Embodiment 1
First by the silicon of the 0.5 parts by weight and carborundum of 99.5 parts by weight, the deionized water of 40 parts by weight and 4 parts by weight
Organic monomer add ball grinder in mixing and ball milling 5h, add 0.1 parts by weight initiator after continue mixing and ball milling 5min, take out
After be put into degasification 5min in vacuum degassing device, take out and be placed in gypsum mold after degasification, and gypsum mold is placed on 30 DEG C
Temperature conditionss under gelation 60min, taken out after cooling from gypsum mold, obtain ceramic blank.Blank is through drying, numerical control
Glass bending mould is obtained with ceramic S1 after milling machine processing, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Embodiment 2
The silicon of the 5 parts by weight and carborundum of 95 parts by weight, the deionized water of 40 parts by weight and 4 parts by weight are had first
Machine monomer adds mixing and ball milling 6h in ball grinder, continues mixing and ball milling 30min after adding the initiator of 0.1 parts by weight, after taking-up
Degasification 10min in vacuum degassing device is put into, takes out and is placed in gypsum mold after degasification, and gypsum mold is placed on 30 DEG C
Gelation 90min under temperature conditionss, takes out from gypsum mold after cooling, obtains ceramic blank.Blank is through drying, numerical control mill
Glass bending mould is obtained with ceramic S2 after bed processing, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Embodiment 3
First by the silicon of the 15 parts by weight and carborundum of 85 parts by weight, the deionized water of 40 parts by weight and 4 parts by weight
Organic monomer adds mixing and ball milling 8h in ball grinder, continues mixing and ball milling 40min after adding the initiator of 0.1 parts by weight, takes out
After be put into degasification 10min in vacuum degassing device, take out and be placed in gypsum mold after degasification, and gypsum mold is placed on 80 DEG C
Temperature conditionss under gelation 120min, taken out after cooling from gypsum mold, obtain ceramic blank.Blank is through drying, number
Glass bending mould is obtained with ceramic S3 after the processing of control milling machine, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Embodiment 4
First by the silicon of the 25 parts by weight and carborundum of 75 parts by weight, the deionized water of 40 parts by weight and 4 parts by weight
Organic monomer adds mixing and ball milling 8h in ball grinder, continues mixing and ball milling 60min after adding the initiator of 0.1 parts by weight, takes out
After be put into degasification 10min in vacuum degassing device, take out and be placed in gypsum mold after degasification, and gypsum mold is placed on 50 DEG C
Temperature conditionss under gelation 120min, taken out after cooling from gypsum mold, obtain ceramic blank.Blank is through drying, number
Glass bending mould is obtained with ceramic S4 after the processing of control milling machine, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Embodiment 5
First by the silicon of the 35 parts by weight and carborundum of 65 parts by weight, the deionized water of 40 parts by weight and 4 parts by weight
Organic monomer adds mixing and ball milling 10h in ball grinder, continues mixing and ball milling 60min after adding the initiator of 0.1 parts by weight, takes out
After be put into degasification 10min in vacuum degassing device, take out and be placed in gypsum mold after degasification, and gypsum mold is placed on 60 DEG C
Temperature conditionss under gelation 120min, taken out after cooling from gypsum mold, obtain ceramic blank.Blank is through drying, number
Glass bending mould is obtained with ceramic S5 after the processing of control milling machine, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Embodiment 6
The silicon of 15 parts by weight, the carborundum of the molybdenum disilicide of 2 parts by weight and 83 parts by weight, 40 parts by weight are gone first
Ionized water and the organic monomer of 4 parts by weight add mixing and ball milling 8h in ball grinder, continue to mix after adding the initiator of 0.1 parts by weight
Ball milling 40min is closed, degasification 10min in vacuum degassing device is put into after taking-up, takes out and is placed in gypsum mold after degasification, and by stone
Cream mould is placed on gelation 120min under 70 DEG C of temperature conditionss, is taken out after cooling from gypsum mold, obtains ceramic hair
Base.Blank obtains glass bending mould with ceramic S6 after drying, CNC milling machine processing, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Embodiment 7
First by the silicon of 15 parts by weight, the carborundum of the boron carbide of 3 parts by weight and 82 parts by weight, 40 parts by weight go from
Sub- water and the organic monomer of 4 parts by weight add mixing and ball milling 8h in ball grinder, continue to mix after adding the initiator of 0.1 parts by weight
Ball milling 40min, degasification 10min in vacuum degassing device is put into after taking-up, takes out and be placed in gypsum mold after degasification, and by gypsum
Mould is placed on gelation 120min under 40 DEG C of temperature conditionss, is taken out after cooling from gypsum mold, obtains ceramic blank.
Blank obtains glass bending mould with ceramic S7 after drying, CNC milling machine processing, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Embodiment 8
First by the carbon of the silicon of 15 parts by weight, the molybdenum disilicide of 2 parts by weight, the boron carbide of 2 parts by weight and 81 parts by weight
The organic monomer of SiClx, the deionized water of 40 parts by weight and 4 parts by weight adds mixing and ball milling 8h in ball grinder, adds 0.1 weight
Continue mixing and ball milling 60min after the initiator of part, degasification 10min in vacuum degassing device is put into after taking-up, take out and put after degasification
Gelation 90min under 50 DEG C of temperature conditionss is placed in gypsum mold, and by gypsum mold, after cooling from gypsum mold
Middle taking-up, obtains ceramic blank.Blank obtains glass bending after drying, CNC milling machine processing, 1700 DEG C of high-temperature vacuum sintering
The ceramic S8 of mould.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Embodiment 9
The silicon of 15 parts by weight and the carborundum of 85 parts by weight, the alcohol of 10 parts by weight are added in ball grinder and mixed first
Ball milling 8h, it is placed in after taking-up in steel mold, compressing to obtain ceramic body, ceramic body is through drying pre-burning, 1700 DEG C of high temperature
Glass bending mould S9 is obtained after vacuum-sintering.
Comparative example 1
Having the carborundum of 90 parts by weight, the graphite of 10 parts by weight, the deionized water of 40 parts by weight and 4 parts by weight first
Machine monomer adds mixing and ball milling 8h in ball grinder, continues mixing and ball milling 45min after adding the initiator of 0.1 parts by weight, after taking-up
Degasification 10min in vacuum degassing device is put into, takes out and is placed in gypsum mold after degasification, and gypsum mold is placed on 50 DEG C
Gelation 90min under temperature conditionss, takes out from gypsum mold after cooling, obtains ceramic blank.Blank is through drying, numerical control mill
Glass bending mould is obtained with ceramic D1 after bed processing, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
Comparative example 2
First by the silicon of the 40 parts by weight and carborundum of 60 parts by weight, the deionized water of 40 parts by weight and 4 parts by weight
Organic monomer adds mixing and ball milling 8h in ball grinder, continues mixing and ball milling 60min after adding the initiator of 0.1 parts by weight, takes out
After be put into degasification 10min in vacuum degassing device, take out and be placed in gypsum mold after degasification, and gypsum mold is placed on 40 DEG C
Temperature conditionss under gelation 120min, taken out after cooling from gypsum mold, obtain ceramic blank.Blank is through drying, number
Glass bending mould is obtained with ceramic D2 after the processing of control milling machine, 1700 DEG C of high-temperature vacuum sintering.
Wherein organic monomer is the acrylamide of methyl two, and initiator is ammonium persulfate.
The above-mentioned glass bending mould being prepared is subjected to performance test with ceramics, obtained test result is inserted
Table 1.
Specific performance test is as follows：
Electric machining characteristic test：Minute surface electric discharge is carried out using minute surface spark machine with ceramics to glass bending mould to add
Work, wherein processing electric current 0.1A, working (finishing) area 100cm2, electro-discharge machining amount is 0.2mm, is entered using visual observation and processing efficiency
Row is judged, and judgment criteria is as follows：
◎:Surface roughness is low, and product surface is smooth, high in machining efficiency；
Δ:Surface roughness is slightly higher, and product surface smoothness declines, and processing efficiency is low；
x:Rough surface, processing efficiency is very low or even can not process.
Glass product yield is tested：Above-mentioned glass bending mould is subjected to sanding and polishing processing, table with ceramic surface
Surface roughness Ra values reach below 0.2um, are subsequently used for shell product after manufacture mobile phone 3D；Under 720 DEG C of heating condition, pass through
Apply 350kg/cm2Load glass is subjected to hot bending, obtain 3D mobile phone glass rear shells, molded with continuous 5000 times
Product carries out Germicidal efficacy, and judgment criteria is as follows：
◎:Surface no significant defect and impression, product surface are smooth；
Δ:Surface slightly has defect or impression, and product surface smoothness is slightly poor.
Wear resistance is tested：Glass bending mould ceramics of the observation by the test of glass product yield by visual observation
Surface and roughness, glass bending mould is ceramic before and after being tested using vernier caliper measurement glass product yield
Size.Judgment criteria is as follows：
◎:Surface changes without roughness, and die size is unchanged, no breakage；
Δ:Surface roughness is slightly changed, and die size stability is slightly changed, no breakage；
x:Surface roughness has significant change, and die size has significant change, cracky.
Table 1
As shown in Table 1, the glass bending mould that silicone content is located in the range of the restriction of the present invention is used to add with ceramics
Product yield is high during work glassware, and wear resistance is good, electric machining characteristic good.It is relatively low when either silicone content be present without silicon
When, glass bending mould is difficult to electro-discharge machining with ceramics, and its compactness is also difficult to be lifted, therefore can cause electric machining
Characteristic and wear resistance are poor, and glass product yield is low.When silicone content is higher, glass bending mould ceramics can be influenceed
Toughness, fragility increase is allowed to, is easy to appearance and wears and cause its wear resistance to decline to a great extent.And by the test of S1 and S9 in table 1
Comparative result understands that the glass bending mould being prepared through collosol and gel injection molding is ceramic and through dry-pressing formed legal system
Standby obtained glass bending mould ceramic phase ratio, the former glass product yield is higher, and this is due to collosol and gel casting
Modulus method has the characteristics that component is uniformly dispersed, material purity is high, physical chemistry is stable, compactness is high, therefore can significantly improve
The glass product yield of glass bending mould ceramics.
The glass bending mould ceramics that above-described embodiment provides are small with the response characteristic of glass, and compactness is high, resistance to
Abrasiveness is good, can obtain higher glass product yield, and the improvement of electric machining characteristic makes the glass bending mould make pottery
Porcelain can not only carry out conventional machining, moreover it is possible to carry out electrical discharge machining, greatly reduce processing cost, improve processing
The surface quality of product.Because the glass bending mould used does not contain oxidizable volatile material with ceramics, because
This, glass bending mould ceramics good stability of the dimension in applied at elevated temperature environment, so as to which its service life can be extended.
The glass bending mould ceramics of the present invention, add elemental silicon, improve the glass bending mould
With compactness, dimensional stability and the abrasion resistance properties of ceramics, preferable abrasion resistance properties both extend service life, ensure again
Higher glass product yield.In addition, the addition of silicon makes the glass bending mould ceramics of the present invention possess preferably
Electric machining characteristic, conventional machining can not only be carried out, moreover it is possible to carry out electrical discharge machining, greatly reduce and be processed into
This, improves the surface quality of converted products.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of glass bending mould ceramics, it is characterised in that its component includes ceramic matrix and silicon, the weight of the silicon
Amount percentage is 0.3%-35%, and the ceramic matrix includes carborundum.
2. glass bending mould as claimed in claim 1 ceramics, it is characterised in that the percentage by weight of the silicon is
5%-20%.
3. glass bending mould ceramics as claimed in claim 1, it is characterised in that the ceramic matrix also includes two
Molybdenum silicide and/or boron carbide, the percentage by weight of the molybdenum disilicide and boron carbide are no more than 5%.
4. glass bending mould ceramics as claimed in claim 1, it is characterised in that the glass bending mould
It is 95% or more with the relative density of ceramics.
5. glass bending mould ceramics as claimed in claim 1, it is characterised in that the glass bending mould
It is 98% or more with the relative density of ceramics.
6. a kind of preparation method of glass bending mould ceramics, it is characterised in that using ceramic powder as raw material, using dry-pressing
Method shaping, slip casting method shaping, isostatic pressing method shaping, one or more methods of collosol and gel moldings formed therefrom, wherein the ceramics
Powder includes ceramic matrix and silicon, and the percentage by weight of the silicon is 0.3%-35%, and the ceramic matrix includes carborundum.
7. the preparation method of glass bending mould ceramics as claimed in claim 6, it is characterised in that the colloidal sol coagulates
Glue moldings formed therefrom includes：
By the ceramic powder and deionized water and organic monomer mixing and ball milling 5-10h；Add initiator and continue mixing and ball milling 5-
60min；The gelation 30-120min under 30-80 DEG C of temperature conditionss is placed in mould after degasification, obtains ceramic hair after cooling
Base, the blank obtain glass bending mould ceramics after drying, finishing, vacuum-sintering.
8. the preparation method of glass bending mould ceramics as claimed in claim 6, it is characterised in that the dry pressing
Shaping includes：
By the ceramic powder and organic solvent mixing and ball milling 5-10h, after be placed in mould, it is compressing to obtain ceramic body, institute
State ceramic body and glass bending mould ceramics are obtained after drying pre-burning, vacuum-sintering.
9. the preparation method of glass bending mould ceramics as claimed in claim 6, it is characterised in that the weight of the silicon
Amount percentage is 5%-20%.
10. the preparation method of glass bending mould ceramics as claimed in claim 6, it is characterised in that the ceramics
Base-material also includes molybdenum disilicide and/or boron carbide, and the percentage by weight of the molybdenum disilicide and boron carbide is no more than 5%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108752002A (en) * | 2018-07-27 | 2018-11-06 | 中国人民解放军国防科技大学 | SiC ceramic-based hot bending die and preparation method thereof |
| CN112341164A (en) * | 2020-10-27 | 2021-02-09 | 福耀玻璃工业集团股份有限公司 | Ceramic mold for glass hot bending molding and preparation method thereof |
| CN116119906A (en) * | 2022-05-13 | 2023-05-16 | 嘉兴南湖学院 | Manufacturing method of integrated concentrating photovoltaic glass |
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| CN102249711A (en) * | 2011-05-17 | 2011-11-23 | 赵宁 | Novel silicon carbide and boron carbide ceramic inner barrel suspending plate for dry method cement kiln |
| CN103998395A (en) * | 2011-10-13 | 2014-08-20 | 圣戈班陶瓷原料公司 | Method for making a dense sic based ceramic product |
| CN106083056A (en) * | 2016-06-12 | 2016-11-09 | 台州东新密封有限公司 | The method of carborundum/molybdenum disilicide composite ceramics is prepared in pressureless sintering |
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| CN102249711A (en) * | 2011-05-17 | 2011-11-23 | 赵宁 | Novel silicon carbide and boron carbide ceramic inner barrel suspending plate for dry method cement kiln |
| CN103998395A (en) * | 2011-10-13 | 2014-08-20 | 圣戈班陶瓷原料公司 | Method for making a dense sic based ceramic product |
| CN106083056A (en) * | 2016-06-12 | 2016-11-09 | 台州东新密封有限公司 | The method of carborundum/molybdenum disilicide composite ceramics is prepared in pressureless sintering |
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| CN108752002A (en) * | 2018-07-27 | 2018-11-06 | 中国人民解放军国防科技大学 | SiC ceramic-based hot bending die and preparation method thereof |
| CN112341164A (en) * | 2020-10-27 | 2021-02-09 | 福耀玻璃工业集团股份有限公司 | Ceramic mold for glass hot bending molding and preparation method thereof |
| CN112341164B (en) * | 2020-10-27 | 2021-12-21 | 福耀玻璃工业集团股份有限公司 | Ceramic mold for glass hot bending molding and preparation method thereof |
| CN116119906A (en) * | 2022-05-13 | 2023-05-16 | 嘉兴南湖学院 | Manufacturing method of integrated concentrating photovoltaic glass |
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