CN115745380A - Light sintered microcrystal plate and sintering process thereof - Google Patents
Light sintered microcrystal plate and sintering process thereof Download PDFInfo
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- CN115745380A CN115745380A CN202211345879.4A CN202211345879A CN115745380A CN 115745380 A CN115745380 A CN 115745380A CN 202211345879 A CN202211345879 A CN 202211345879A CN 115745380 A CN115745380 A CN 115745380A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000005245 sintering Methods 0.000 title claims abstract description 38
- 239000013081 microcrystal Substances 0.000 title claims abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 71
- 239000002245 particle Substances 0.000 claims abstract description 51
- 238000002425 crystallisation Methods 0.000 claims abstract description 14
- 230000008025 crystallization Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 238000000498 ball milling Methods 0.000 claims abstract description 7
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000011819 refractory material Substances 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910052863 mullite Inorganic materials 0.000 claims description 3
- 229910052596 spinel Inorganic materials 0.000 claims description 3
- 239000011029 spinel Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052681 coesite Inorganic materials 0.000 abstract description 5
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 5
- 239000000377 silicon dioxide Substances 0.000 abstract description 5
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 5
- 229910052682 stishovite Inorganic materials 0.000 abstract description 5
- 229910052905 tridymite Inorganic materials 0.000 abstract description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 4
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000003892 spreading Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 238000013461 design Methods 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002241 glass-ceramic Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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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- Glass Compositions (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a light sintered microcrystal plate and a sintering process thereof, which comprises the steps of glass particle preparation, ball milling classification, material distribution, sintered crystallization, cold processing and the like; the material distribution comprises a first groove and a second groove which are used for fully spreading glass particles in the refractory mold, wherein the second groove is formed in the bottom of the first groove, the depth of the first groove is 5-20 mm, the depth of the second groove is 3-40 mm, and the particle size of the glass particles in the first groove is different from that of the glass particles in the second groove. The invention has the beneficial effects that: the glass solution is adjusted to include 40% -70% of SiO2, 8% -20% of CaO, 4% -12% of MgO, 5% -20% of Al2O3 and 2% -8% of Na2O, then the glass solution is quenched with water, and glass particles obtained by water quenching are sieved and distributed, so that sintering forming of a large-size light sintered microcrystalline plate is achieved, the phenomenon that the glass particles cannot be reliably combined together due to shrinkage in a sintering process is avoided, the combination degree of a reinforcing structure and a microcrystalline plate body is obviously enhanced, and the bearing capacity of the light sintered microcrystalline plate is improved.
Description
Technical Field
The invention relates to the technical field of microcrystalline plate preparation, in particular to a light sintered microcrystalline plate and a sintering process thereof.
Background
The light weight and assembly type building design is one of the mainstream directions of the current building development, and the light weight and assembly type building design has outstanding significance for reducing the resource and energy consumption in the preparation and processing processes of building materials. At present, the thickness of a sintered microcrystal plate is generally heavier to ensure the structural strength, and the density is 2.5-3.2g cm < -3 >; taking 1200 × 800 × 20mm microcrystalline plates as an example, the weight of a single microcrystalline plate can reach 48-61.4kg, so that the bearing pressure of the structure is greatly increased, the structural design requirement of an assembly type structure cannot be met, and the transportation and installation efficiency of the microcrystalline plate is limited, therefore, the light-weight design and processing of the microcrystalline plate are particularly important. However, the overall compressive strength of the plate is affected by the thinness of the plate, so that potential safety hazards are caused.
Patent CN96114108.5 discloses a method for preparing a special-shaped microcrystalline glass plate by a sintering method, which adopts high-temperature forming, and utilizes the characteristic that a microcrystalline glass plate blank is softened and deformed at high temperature to press the plate blank at high temperature by a mold to form. Patent CN200610043667.5 adopts optimized glass particle size distribution paving material, uses roller to compact, uses SiO2 powder as interlayer to prepare ultrathin glass ceramics, and prepares ultrathin glass ceramics panel, its forming thickness is about 2-5 mm. Patent CN202010292506.X discloses a method for preparing iron-selecting tailing microcrystalline glass by synergistic sintering of fuming slag, which comprises the steps of preparing a mother blank by powder granulation and die pressure forming, and then sintering and forming.
Disclosure of Invention
In order to overcome at least part of defects in the prior art, the embodiment of the invention provides a light sintered microcrystalline plate and a sintering process thereof, which have simple structure and convenient use.
The invention relates to 1. A sintering process of a microcrystalline plate, which is characterized by comprising the following steps: the method comprises the steps of glass particle preparation, ball milling classification, material distribution, sintering crystallization, cold processing and the like;
the method comprises the following steps that glass particles are fully paved in a first groove and a second groove of a refractory mold, the second groove is formed in the bottom of the first groove, the depth of the first groove is 5mm-20mm, the depth of the second groove is 3mm-40mm, and the particle size of the glass particles in the first groove is different from that of the glass particles in the second groove;
the sintering crystallization comprises the following steps of transferring a glass particle paved refractory mold in a material distribution process to a sintering kiln, heating to 1000-1200 ℃ at 8-12 ℃/min, preserving heat for 1-3 hours to complete sintering crystallization, forming a microcrystalline plate body in a first groove in the crystallization process, forming a reinforcing structure connected with the microcrystalline plate body in a second groove, cooling to 580-670 ℃ at 4-8 ℃/min, preserving heat for 0.5-1 hour to remove internal residual stress, completing annealing, cooling at 6-10 ℃/min, cooling to normal temperature, and discharging to obtain a light microcrystalline glass plate blank.
Furthermore, the refractory mould comprises a first detachable template and a second detachable template, wherein the first groove is formed in the upper surface of the first template and penetrates through the first template, the second template is placed in the first groove, and the second groove is formed in the upper surface of the second template.
Further, refractory mould includes first template of detachable and second template, first recess is seted up and is sealed at first template upper surface and first recess below, the second template includes that a plurality of overlap joint is in bar shaped plate in the first template, the constant head tank that is used for the overlap joint bar shaped plate is seted up to the inner wall of first template, and adjacent bar shaped plate encloses jointly with the inner wall of first template and establishes and form the second recess.
Further, the preparation of the glass particles comprises the following steps of mixing raw materials, feeding the mixed raw materials into a glass melting furnace, melting the mixed raw materials at the temperature of 1400-1650 ℃, removing internal gas to obtain a uniform glass solution, and discharging the uniform glass solution of the clarified melt into water to obtain water-quenched glass particles.
Further, the glass solution comprises, by weight, 40% to 70% of SiO2, 8% to 20% of CaO, 4% to 12% of MgO, 5% to 20% of Al2O3 and 2% to 8% of Na2O.
Further, the material distribution method comprises the following steps of uniformly paving second groove parts in the refractory mold with glass particles larger than 16 meshes, uniformly paving the first groove parts with glass particles of 5-60 meshes, wherein the diameter of the particles in the first groove is larger than that of the particles in the second groove, and the second groove parts are distributed at the bottom of the first groove in a parallel strip shape, an I shape, a # -shaped shape, a cylindrical shape or a square grid shape.
Further, the refractory mould is made of refractory materials with high temperature resistance and small thermal expansion coefficient.
Further, the refractory materials are spinel refractory plates, siC refractory plates, mullite refractory plates and corundum refractory plates.
Further, the method comprises the steps of putting water-quenched glass particles into a ball mill for ball milling, and screening the ball-milled glass material.
The invention also provides a light sintered microcrystal plate, which is prepared by the sintering process of the microcrystal plate.
The invention has the advantages that the composition substances of the glass solution are adjusted to include 40-70 percent of SiO2, 8-20 percent of CaO, 4-12 percent of MgO, 5-20 percent of Al2O3 and 2-8 percent of Na2O, then the glass solution is quenched by water, and the glass particles obtained by water quenching are sieved and distributed, thereby realizing the sintering molding of the large-size light-weight sintered microcrystalline plate, preventing the glass particles from being combined together without reliability due to shrinkage in the sintering process, obviously strengthening the combination degree of a strengthening structure and the microcrystalline plate body, and improving the bearing capacity of the light-weight sintered microcrystalline plate
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of one of the structures of the refractory mold.
FIG. 2 is a schematic structural view of another configuration of the refractory mold.
Fig. 3 is a schematic cross-sectional structure of fig. 2.
FIG. 4 is a graph comparing the properties of the sheets obtained in the examples and comparative examples.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 2 and 3, a sintering process of a microcrystalline plate in a preferred embodiment of the present invention includes the steps of glass particle preparation, ball milling classification, material distribution, sintering crystallization, and cold working;
the method comprises the following steps that glass particles are fully paved in a first groove and a second groove of a refractory mold, the second groove is formed in the bottom of the first groove, the depth of the first groove is 12mm, the depth of the second groove is 20mm, and the particle size of the glass particles in the first groove is different from that of the glass particles in the second groove; in the actual implementation in-process, refractory mould includes first template of detachable and second template, first recess is seted up and is sealed at first template upper surface and first recess below, the second template includes that a plurality of overlap joint is in bar shaped plate on the first template, the constant head tank that is used for the overlap joint bar shaped plate is seted up to the inner wall of first template, and adjacent bar shaped plate encloses jointly with the inner wall of first template and establishes the formation second recess, and the cross-section of first recess and second recess is the rectangle. Through the second recess setting that will form reinforcing structure in the top of first recess, can reduce the glass granule of upper strata to the pressure of lower floor's glass granule, at glass crystallization shrink's in-process, the reduction shrinkage that can show improves final crystallization quality.
The sintering crystallization comprises the following steps of transferring a glass particle paved refractory mould in a material distribution process to a sintering kiln, heating to 1000 ℃ at 8 ℃/min, preserving heat for 1-3 hours to complete sintering crystallization, cooling to 580 ℃ at 4 ℃/min, preserving heat for 0.5 hour to remove internal residual stress, completing annealing, cooling at 6 ℃/min, cooling to normal temperature, discharging to obtain a light microcrystalline glass plate blank, and obtaining a light sintered microcrystalline plate by cold processing, wherein the light microcrystalline glass plate blank comprises a reinforcing structure formed in a second groove and a microcrystalline plate body formed in a first groove.
In the above embodiment, the preparation of the glass particles includes the steps of mixing the raw materials, feeding the mixture into a glass melting furnace, melting the mixture at 1400 ℃, removing internal gas to obtain a uniform glass solution, and discharging the clarified and uniform molten glass into water to obtain water-quenched glass particles.
In the above examples, the glass solution comprises 40% to 70% by weight of SiO2, 8% to 20% by weight of CaO, 4% to 12% by weight of MgO, 5% to 20% by weight of Al2O3 and 2% to 8% by weight of Na2O.
In the above embodiment, the distributing includes the steps of uniformly paving the second groove portion of the refractory mold with 20-mesh glass particles, and uniformly paving the first groove portion with 30-mesh glass particles.
In the above embodiment, the refractory mold is made of a refractory material that is resistant to high temperatures and has a small coefficient of thermal expansion.
In the above embodiments, the refractory materials are spinel refractory plates, siC refractory plates, mullite refractory plates, and corundum refractory plates.
In the above embodiment, the method includes the steps of putting the water-quenched glass particles into a ball mill for ball milling, and sieving the ball-milled glass frit.
In the above embodiment, the second grooves are distributed at the bottom of the first groove in a parallel strip shape, an i-shape, a # -shape, a cylindrical shape or a grid shape.
Example 2
The main features are the same as in example 1, except that the depth of the first groove is 5mm and the depth of the second groove is 3mm.
Example 3
The main features are the same as in example 1, except that the depth of the first groove is 5mm and the depth of the second groove is 20mm.
Example 4
The main features are the same as those of embodiment 1 except that the depth of the first groove is 20mm and the depth of the second groove is 40mm.
Example 5
The main features are the same as those of embodiment 1 except that the depth of the first groove is 12mm and the depth of the second groove is 3mm.
Example 6
The main features are the same as in example 1, except that the depth of the first groove is 12mm and the depth of the second groove is 40mm.
Example 7
The main features are the same as in example 1, except that the depth of the first groove is 20mm and the depth of the second groove is 3mm.
With reference to fig. 1, indeed, in other embodiments, the refractory mold comprises a first removable template and a second removable template, the first recess being provided on an upper surface of the first template and extending through the first template, the second template being placed in the first recess, the second recess being provided on an upper surface of the second template.
The invention also provides a light sintered microcrystalline plate which is prepared by the sintering process of the microcrystalline plate in any embodiment.
Comparative example 1
The main features are the same as in example 1, except that the refractory mold is a flat mold having a groove.
Comparative example 2
The main characteristics are the same as those of the embodiment 1, except that the second groove part of the refractory mold is uniformly paved with 30-mesh glass particles, and the first groove part is uniformly paved with 20-mesh glass particles. In other examples, attempts were also made to arrange the glass particles used in the first and second grooves to be uniform, and it was found that significant delamination of the glass particles in the first and second grooves occurred.
To further illustrate the light sintered microcrystalline panels produced by the present invention, the performance of the light sintered microcrystalline panels produced in the examples and comparative examples was tested, and the test results are shown in fig. 4: comparing the examples with comparative example 1, it can be seen that the lightweight structure-enhanced microcrystalline plate prepared by using the refractory mold of the present invention can ensure that the lightweight structure-enhanced microcrystalline plate still has good structural strength while reducing the thickness and weight. Comparing the examples with comparative example 2, it can be seen that the compressive strength of comparative example 2 is superior to that of the examples, the longitudinal flexural strength and the transverse flexural strength are both lower than those of the examples, and the overall performance of the lightweight structure-reinforced microcrystalline panel obtained in the comparative example is superior to that of comparative example 2 because the lightweight structure-reinforced microcrystalline panel has a lower requirement for compressive strength as a building material.
In summary, examples 1 to 7 show that the lightweight structure-reinforced microcrystalline panel obtained in example 5 is most excellent in overall strength, the lightweight structure-reinforced microcrystalline panel obtained in example 1 has the highest structural strength but a thickness significantly larger than that of example 5, and the lightweight structure-reinforced microcrystalline panel obtained in example 2 has a low structural strength but a low weight, and has a longitudinal flexural strength and a transverse flexural strength comparable to those of examples, and is more excellent in applications in building materials.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A sintering process of a microcrystalline plate is characterized by comprising the following steps: the method comprises the steps of glass particle preparation, ball milling classification, material distribution, sintering crystallization, cold processing and the like;
the material distribution method comprises the following steps that glass particles are fully paved in a first groove and a second groove of a refractory mold, the second groove is formed in the bottom of the first groove, the depth of the first groove is 5-20 mm, the depth of the second groove is 3-40 mm, and the particle size of the glass particles in the first groove is different from that of the glass particles in the second groove;
the sintering crystallization comprises the following steps of transferring a refractory mold paved with glass particles in a material distribution process to a sintering kiln, heating to 1000-1200 ℃ at 8-12 ℃/min, preserving heat for 1-3 hours to complete sintering crystallization, forming a microcrystalline plate body in a first groove in the crystallization process, forming a reinforcing structure connected with the microcrystalline plate body in a second groove, cooling to 580-670 ℃ at 4-8 ℃/min, preserving heat for 0.5-1 hour to remove internal residual stress, completing annealing, cooling at 6-10 ℃/min, cooling to normal temperature, and discharging to obtain a light microcrystalline glass plate blank.
2. A process for sintering a microcrystalline plate as claimed in claim 1, wherein the refractory mould comprises a first and a second detachable mould plate, wherein the first recess is provided in the upper surface of the first mould plate and extends through the first mould plate, and wherein the second mould plate is placed in the first recess and the second recess is provided in the upper surface of the second mould plate.
3. A sintering process of a microcrystal plate according to claim 1, wherein the refractory mold comprises a first mold plate and a second mold plate which are detachable, the first groove is formed in the upper surface of the first mold plate, the lower portion of the first groove is closed, the second mold plate comprises a plurality of strip-shaped plates lapped on the first mold plate, a positioning groove for lapping the strip-shaped plates is formed in the inner wall of the first mold plate, and the adjacent strip-shaped plates and the inner wall of the first mold plate are jointly encircled to form a second groove.
4. A sintering process of a microcrystalline plate according to claim 1, characterized in that: the preparation method of the glass particles comprises the following steps of mixing raw materials, feeding the mixed raw materials into a glass melting furnace, melting the mixed raw materials at the temperature of 1400-1650 ℃, removing internal gas to obtain uniform glass solution, and discharging the clarified uniform glass solution into water to obtain water-quenched glass particles.
5. A sintering process of a microcrystalline plate according to claim 1, characterized in that: the glass solution comprises 40-70% by weight of SiO 2 CaO 8-20%, mgO 4-12%, al 5-20% 2 O 3 And 2% to 8% of Na 2 O。
6. A sintering process of a microcrystalline plate according to claim 1, characterized in that: the material distribution method comprises the following steps of uniformly paving the second groove part in the refractory mold with glass particles larger than 16 meshes, uniformly paving the first groove part with glass particles of 5-60 meshes, wherein the diameter of the particles in the first groove is generally larger than that of the particles in the second groove, and the second groove is distributed at the bottom of the first groove in a parallel strip shape, an I shape, a # -shaped shape, a cylindrical shape or a square shape.
7. A sintering process of a microcrystalline plate according to claim 1, characterised in that: the refractory mould is prepared from a refractory material which is high temperature resistant and has a small thermal expansion coefficient.
8. A sintering process of a microcrystalline plate according to claim 1, characterised in that: the refractory materials are spinel refractory plates, siC refractory plates, mullite refractory plates and corundum refractory plates.
9. A sintering process of a microcrystalline plate according to claim 1, characterised in that: the method comprises the steps of putting water-quenched glass particles into a ball mill for ball milling, and screening the ball-milled glass material.
10. A light sintered microcrystal plate is characterized in that: prepared by a sintering process of a microcrystalline plate according to any of claims 1-9.
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| CN1107811A (en) * | 1994-12-06 | 1995-09-06 | 唐山市燕山产业有限公司 | Process for producing large devitrified glass decorative board |
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