CN113954205A - Split type combined quartz crucible mold - Google Patents
Split type combined quartz crucible mold Download PDFInfo
- Publication number
- CN113954205A CN113954205A CN202111366267.9A CN202111366267A CN113954205A CN 113954205 A CN113954205 A CN 113954205A CN 202111366267 A CN202111366267 A CN 202111366267A CN 113954205 A CN113954205 A CN 113954205A
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- purity
- inner shell
- quartz
- split type
- shaped part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/20—Producing shaped prefabricated articles from the material by centrifugal or rotational casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
Abstract
A split combined quartz crucible mold comprises an inner shell formed by combining and stacking a plurality of high-purity quartz ceramic pieces, wherein a water cooling circulation sleeve is sleeved outside the inner shell, an air exhaust gap is reserved between the water cooling circulation sleeve and the outer wall of the inner shell, vacuumizing holes communicated with the air exhaust gap are formed in the high-purity quartz ceramic pieces, and a vacuumizing pipeline communicated with the air exhaust gap is fixedly communicated with the bottom of the water cooling circulation sleeve. The split combined quartz crucible mold provided by the application is of a split structure, has the advantages of small expansion coefficient and good thermal shock property, is not easy to expand and deform at high temperature, is made of high-purity silica, is free from pollution due to contact with high-purity quartz sand used as a crucible raw material, is long in service cycle of each mold, and effectively reduces the production cost of the crucible.
Description
Technical Field
The invention relates to the technical field of crucible molds, in particular to a split combined quartz crucible mold.
Background
Along with the national standard-reaching requirement of carbon neutralization, solar energy develops and progresses day by day, and the solar energy has unique advantages. Along with the development of solar energy, the development of a single crystal solar energy technology is particularly rapid and has a leading position, the yield and the cost performance of solar single crystals are also greatly improved, the size of a monocrystalline silicon crucible is gradually increased from 10 inches in the 90 th year to 36-40 inches till now, and the problem of a mould for producing the monocrystalline silicon crucible is also gradually shown along with the gradual increase of the size of the monocrystalline silicon crucible.
The material used for the monocrystalline silicon quartz crucible mold is graphite, the graphite mold has high cost, oxidation and shedding at high temperature pollute the high-purity quartz sand, but the produced high-purity quartz sand is purified about 8000 yuan per ton after being polluted, and the graphite crucible mold has high cost and great pollution; later, the silicon single crystal quartz crucible mold belongs to a large-size silicon single crystal quartz crucible mold, but the silicon single crystal quartz crucible mold is high in cost and easy to deform at high temperature, the silicon single crystal quartz crucible mold can react with high-purity quartz sand to be polluted at the same high temperature, the polluted high-purity quartz sand is difficult to purify, the silicon single crystal quartz crucible mold is heavy and inconvenient to operate, the two molds have high cost and low cost performance, the polluted high-purity quartz sand is purified by about 8000 yuan per ton, and the environmental pollution is greatly increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing a split combined quartz crucible mold with good thermal shock property and no pollution aiming at the defects of the prior art.
The technical problem to be solved by the present invention is achieved by the following technical means. The invention relates to a split combined quartz crucible mold, which comprises an inner shell formed by combining and stacking a plurality of high-purity quartz ceramic pieces, wherein a water cooling circulation sleeve is sleeved outside the inner shell, an air exhaust gap is reserved between the water cooling circulation sleeve and the outer wall of the inner shell, vacuumizing holes communicated with the air exhaust gap are formed in the high-purity quartz ceramic pieces, and a vacuumizing pipeline communicated with the air exhaust gap is fixedly communicated with the bottom of the water cooling circulation sleeve.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the split combined quartz crucible mold, a plurality of supporting legs are fixedly arranged at the bottom of the inner shell, a supporting tube matched with the supporting legs is welded at the bottom of the water cooling circulating sleeve, one end of the supporting tube extends into the air exhaust gap, the other end of the supporting tube extends to the outer side of the water cooling circulating sleeve and is screwed with a sealing bolt, and a supporting spring matched with the supporting legs is also arranged in the supporting tube.
The technical problem to be solved by the invention can be further solved by adopting the following technical scheme that for the split combined quartz crucible mold, the inner shell comprises a disc-shaped part at the bottom, a cylinder-shaped part at the middle part and a ring-shaped part at the top, the disc-shaped part is of an integral structure made of high-purity quartz ceramic parts, and the cylinder-shaped part and the ring-shaped part are of split structures formed by combining and stacking the high-purity quartz ceramic parts.
The technical problem to be solved by the invention can be further solved by adopting the following technical scheme that for the split combined quartz crucible mold, the tops of the disc-shaped part and the cylinder-shaped part are respectively provided with a convex edge, the bottoms of the cylinder-shaped part and the ring-shaped part are respectively provided with a groove, one side of the high-purity quartz ceramic part forming the cylinder-shaped part and one side of the high-purity quartz ceramic part forming the ring-shaped part are respectively provided with a convex edge, and the other side of the high-purity quartz ceramic part forming the cylinder-shaped part and the other side of the high-purity quartz ceramic part forming the ring-shaped part are respectively provided with a groove.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the split combined quartz crucible mold, the vacuumizing hole is conical, and the smaller end of the vacuumizing hole is arranged at one side close to the vacuumizing gap.
The technical problem to be solved by the invention can be further realized by the following technical scheme that quartz cotton or quartz ceramic filter elements are filled in the vacuumizing holes of the split combined quartz crucible mold.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the split combined quartz crucible mold, the porosity of the high-purity quartz ceramic piece is 5-15, the width of the upper part of the air extraction gap is 30-50 mm, and the width of the bottom of the air extraction gap is 100-150 mm.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the split combined quartz crucible mold, the high-purity quartz ceramic piece takes high-purity silicon dioxide as a main raw material, and aggregate is added during molding and manufacturing.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the split combined quartz crucible mold, the aggregate is any one or combination of a plurality of carbon fibers, quartz fibers or alumina fibers.
The technical problem to be solved by the invention can be further realized by the following technical scheme that in the actual manufacturing process of the split combined quartz crucible mold, high-purity silicon dioxide is customized according to the diameter of the inner shell, the addition amount of the aggregate is determined according to the wall thickness of the inner shell, the high-purity silicon dioxide is prepared by performing grain size distribution on the high-purity silicon dioxide with 60-100 meshes, 100-200 meshes and 200-300 meshes, and the addition amount of the aggregate is 1-10% of the high-purity silicon dioxide.
Compared with the prior art, the mold provided by the invention adopts a split structure, is built by combining and stacking a plurality of high-purity quartz ceramic pieces, and has the advantages of high temperature resistance, small expansion coefficient, good thermal shock resistance, heat insulation and good heat preservation performance, moreover, the high-purity quartz ceramic pieces are made of high-purity silicon dioxide, are free from pollution when being in contact with high-purity quartz sand used as crucible raw materials, the service cycle of each mold is long, and the production cost of the crucible is effectively reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the inner case of the present invention;
FIG. 3 is a schematic view of the structure of the disc of the present invention;
FIG. 4 is a schematic view of the construction of the cartridge of the present invention;
FIG. 5 is a schematic view of the ring of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all 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.
Referring to fig. 1 to 5, a split combined quartz crucible mold comprises an inner shell 1 formed by combining and stacking a plurality of high-purity quartz ceramic pieces, a water cooling circulation sleeve 2 is sleeved outside the inner shell 1, an air exhaust gap 3 is reserved between the water cooling circulation sleeve 2 and the outer wall of the inner shell 1, vacuumizing holes 9 communicated with the air exhaust gap 3 are formed in the high-purity quartz ceramic pieces, and a vacuumizing pipeline 8 communicated with the air exhaust gap 3 is fixedly communicated with the bottom of the water cooling circulation sleeve 2. The inner shell 1 is used for containing high-purity quartz sand for the production of the quartz crucible, the high-purity quartz sand is centrifugally melted to obtain the quartz crucible when the inner shell rotates along with the water cooling circulating sleeve 2, and the shape of the inner shell 1 is consistent with that of the quartz crucible; the inner shell 1 is formed by combining and stacking high-purity quartz ceramic pieces, can relieve expansion deformation at high temperature and is not easy to deform; the water cooling circulation sleeve 2 is matched with the inner shell 1, so that the inner shell 1 can be conveniently driven to rotate, an air exhaust gap 3 can be formed between the water cooling circulation sleeve and the inner shell 1, high-purity quartz sand in the inner shell 1 is adsorbed to the inner wall of the inner shell 1 through the vacuumizing hole 9, a quartz crucible is formed through hot melting, and meanwhile, cooling water can be circularly introduced to perform cooling treatment;
fixing holes are formed in the tops of the inner shell 1 and the water cooling circulating sleeve 2, so that the inner shell 1 and the water cooling circulating sleeve 2 can be fixedly connected by using fixing bolts;
in order to prevent the quartz sand in the inner shell 1 from entering the air exhaust gap 3 from the vacuumizing hole 9, air permeable materials such as quartz cotton or quartz ceramic filter elements are filled in the vacuumizing hole 9, so that the quartz sand can be blocked without influencing vacuumizing treatment;
in practical application, the vacuumizing hole 9 can be designed to be conical, and the smaller end of the vacuumizing hole 9 is arranged on one side close to the vacuumizing gap 3, so that the vacuumizing hole 9 has certain taper, the quartz cotton or quartz ceramic filter element and other breathable materials are not easy to suck out from the vacuumizing position, and the firmness is ensured.
A plurality of supporting legs 4 are fixedly installed at the bottom of the inner shell 1, supporting tubes 5 matched with the supporting legs 4 are welded at the bottom of the water cooling circulating sleeve 2, one ends of the supporting tubes 5 extend into the air exhaust gap 3, the other ends of the supporting tubes 5 extend to the outer side of the water cooling circulating sleeve 2 and are provided with sealing bolts 7 in a screwed mode, and supporting springs 6 matched with the supporting legs 4 are further installed in the supporting tubes 5. When the inner shell 1 is placed in the water cooling circulation sleeve 2, the supporting legs 4 are inserted into the supporting tubes 5, the supporting springs 6 tightly support and fix the supporting legs 4, stable installation of the inner shell 1 is achieved, and meanwhile, when the subsequent inner shell 1 is heated to expand, the supporting springs 6 can play a certain buffering role; the sealing bolt 7 is also sleeved with a sealing gasket for sealing the supporting tube 5, and meanwhile, the length of the sealing bolt 7 can be set to adjust the elasticity of the supporting spring 6 to the supporting leg 4, so that the mounting and fixing of the inner shell 1 can be better realized;
in practical application, a cylindrical guide isolation block can be arranged in the supporting tube 5 between the supporting spring 6 and the sealing bolt 7, so that the sealing bolt 7 can support the supporting spring 6 conveniently, the isolation effect can be achieved in the supporting tube 5, the sealing bolt 7 is prevented from being in direct contact with the supporting spring 6, and the sealing bolt 7 is prevented from being deformed and damaged by high temperature as far as possible; preferably, the guide isolation block is made of graphite material;
the inner shell 1 comprises a disc-shaped part 10 at the bottom, a cylinder-shaped part 12 in the middle and a ring-shaped part 14 at the top, wherein the disc-shaped part 10 is of an integral structure made of high-purity quartz ceramic parts, and the cylinder-shaped part 12 and the ring-shaped part 14 are of split structures formed by combining and stacking the high-purity quartz ceramic parts. The supporting legs 4 are arranged at the bottom of the disc-shaped part 10, the number of the supporting legs is 3-4, the supporting legs are uniformly distributed along the circumferential direction of the disc-shaped part 10, the cylindrical part 12 and the annular part 14 are of split structures and can be divided into 3-4 sections, so that the replacement and the maintenance are convenient, when one section of high-purity quartz ceramic part is damaged, only the high-purity quartz ceramic part at the position needs to be replaced, the integral replacement is not needed, and the cost is reduced;
in order to improve the reliability of the connection and installation of the disc-shaped element 10, the cylinder-shaped element 12 and the ring-shaped element 14, the tops of the disc-shaped element 10 and the cylinder-shaped element 12 are respectively provided with a convex edge 11, the bottoms of the cylinder-shaped element 12 and the ring-shaped element 14 are respectively provided with a groove 13, one side of the high-purity quartz ceramic element forming the cylinder-shaped element 12 and one side of the high-purity quartz ceramic element forming the ring-shaped element 14 are respectively provided with a convex edge 11, the other side of the high-purity quartz ceramic element forming the cylinder-shaped element 12 and the other side of the high-purity quartz ceramic element forming the ring-shaped element 14 are respectively provided with a groove 13, when the inner shell 1 is assembled, the disc-shaped element 10, the cylinder-shaped element 12 and the ring-shaped element 14 can be stacked by matching the convex edges 11 and the grooves 13, and an integral inner shell 1 is formed;
preferably, the fixing holes of the inner shell 1 are arranged on the ring-shaped member 14;
the porosity of the high-purity quartz ceramic piece is 5-15, the width of the upper part of the air exhaust gap 3 is 30-50 mm, the width of the bottom of the air exhaust gap 3 is 100-150 mm, the diameter of one end of the vacuumizing hole 9 is 10-30mm, and the diameter of the other end of the vacuumizing hole is 3-10 mm.
The high-purity quartz ceramic part is characterized in that high-purity silicon dioxide is used as a main raw material, aggregate is added during molding and manufacturing, the aggregate is any one or combination of carbon fiber, quartz fiber or alumina fiber, during actual manufacturing, the high-purity silicon dioxide is customized according to the diameter of the inner shell 1, the addition amount of the aggregate is determined according to the wall thickness of the inner shell 1, the high-purity silicon dioxide adopted by the high-purity quartz ceramic part is prepared by performing grain size distribution by using high-purity silicon dioxide of 60-100 meshes, 100-200 meshes and 200-300 meshes, and the addition amount of the aggregate is 1-10% of the high-purity silicon dioxide;
of course, in specific application, the parameters of temperature resistance, thermal shock resistance, expansion coefficient and the like of the inner shell 1 can be adjusted by adjusting the porosity of the high-purity quartz ceramic piece without adding aggregates.
When the device is used, the inner shell 1 is placed in the water cooling circulating sleeve 2, one side of a high-purity quartz ceramic part forming the inner shell 1 is combined and piled, the high-purity quartz ceramic part is fixed by the fixing hole and the supporting tube 5, then the assembled inner shell 1 and the water cooling circulating sleeve 2 are placed on an external rotating device, quartz sand for quartz crucible production is placed in the inner shell 1, then electric arc hot melting is carried out on the quartz sand, the water cooling circulating sleeve 2 is rotated at the same time, axial vacuum treatment is carried out on the air exhaust gap 3 by the vacuumizing pipeline 8, the quartz sand is attached to the inner wall of the inner shell 1, and the quartz crucible is formed by hot melting;
subsequently, cooling water can be circularly introduced by utilizing the water cooling circulating sleeve 2 to cool the quartz crucible;
meanwhile, the air exhaust gap 3 is evacuated into a vacuum cavity, so that the heat preservation performance is good, and the thermal field of the arc quartz crucible is released from inside to outside, so that the effect of temperature leakage can be achieved, and the temperature is reduced for water cooling outside the die;
high-purity quartz ceramic spare adopts high-purity silica to make, and the quartz sand contact of production usefulness with quartz crucible under high temperature is pollution-free, and simultaneously, inner shell 1 is split type structure, and not only the coefficient of expansion is little, and non-deformable can used repeatedly many times under high temperature, and certain part damages moreover, only needs to change this part, need not carry out the whole change, and is with low costs, is favorable to reducing quartz crucible's manufacturing cost.
Claims (10)
1. The utility model provides a split type combination quartz crucible mould which characterized in that: the high-purity quartz ceramic piece vacuum pumping device comprises an inner shell formed by combining and stacking a plurality of high-purity quartz ceramic pieces, a water cooling circulation sleeve is sleeved outside the inner shell, an air pumping gap is reserved between the water cooling circulation sleeve and the outer wall of the inner shell, vacuum pumping holes communicated with the air pumping gap are formed in the high-purity quartz ceramic pieces, and a vacuum pumping pipeline communicated with the air pumping gap is fixedly communicated with the bottom of the water cooling circulation sleeve.
2. The split type combined quartz crucible mold according to claim 1, wherein: the bottom of the inner shell is fixedly provided with a plurality of supporting legs, the bottom of the water cooling circulating sleeve is welded with a supporting tube matched with the supporting legs, one end of the supporting tube extends into the air exhaust gap, the other end of the supporting tube extends to the outer side of the water cooling circulating sleeve and is provided with a sealing bolt in a screwing mode, and a supporting spring matched with the supporting legs is further arranged in the supporting tube.
3. The split type combined quartz crucible mold according to claim 1, wherein: the inner shell comprises a disc-shaped part at the bottom, a cylindrical part in the middle and an annular part at the top, the disc-shaped part is of an integral structure made of high-purity quartz ceramic parts, and the cylindrical part and the annular part are of split structures formed by combining and stacking the high-purity quartz ceramic parts.
4. The split type combined quartz crucible mold according to claim 3, wherein: the top of the disc-shaped part and the top of the cylinder-shaped part are both provided with convex edges, the bottom of the cylinder-shaped part and the bottom of the ring-shaped part are both provided with grooves, the convex edges are arranged on one sides of the high-purity quartz ceramic parts forming the cylinder-shaped part and the high-purity quartz ceramic parts forming the ring-shaped part, and the grooves are arranged on the other sides of the high-purity quartz ceramic parts forming the cylinder-shaped part and the high-purity quartz ceramic parts forming the ring-shaped part.
5. The split type combined quartz crucible mold according to claim 1, wherein: the vacuumizing hole is conical, and the smaller end of the vacuumizing hole is arranged on one side close to the air exhaust gap.
6. The split type combined quartz crucible mold according to claim 1 or 5, wherein: quartz cotton or quartz ceramic filter elements are filled in the vacuumizing holes.
7. The split type combined quartz crucible mold according to claim 1, wherein: the porosity of the high-purity quartz ceramic piece is 5-15, the width of the upper part of the pumping gap is 30-50 mm, and the width of the bottom of the pumping gap is 100-150 mm.
8. The split type combined quartz crucible mold according to claim 1, wherein: the high-purity quartz ceramic part takes high-purity silicon dioxide as a main raw material, and aggregate is added during molding and manufacturing.
9. The split type combined quartz crucible mold according to claim 8, wherein: the aggregate is any one or combination of a plurality of carbon fibers, quartz fibers or alumina fibers.
10. The split type combined quartz crucible mold according to claim 8, wherein: during actual manufacturing, the high-purity silica is customized according to the diameter of the inner shell, the addition amount of the aggregate is determined according to the wall thickness of the inner shell, the high-purity silica is prepared by performing grain size grading on the high-purity silica with 60-100 meshes, 100-200 meshes and 200-300 meshes, and the addition amount of the aggregate is 1-10% of the high-purity silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111366267.9A CN113954205A (en) | 2021-11-18 | 2021-11-18 | Split type combined quartz crucible mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111366267.9A CN113954205A (en) | 2021-11-18 | 2021-11-18 | Split type combined quartz crucible mold |
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| Publication Number | Publication Date |
|---|---|
| CN113954205A true CN113954205A (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111366267.9A Pending CN113954205A (en) | 2021-11-18 | 2021-11-18 | Split type combined quartz crucible mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477734A (en) * | 2022-02-18 | 2022-05-13 | 内蒙古鑫晶新材料有限公司 | Quartz crucible water-cooling mold |
-
2021
- 2021-11-18 CN CN202111366267.9A patent/CN113954205A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477734A (en) * | 2022-02-18 | 2022-05-13 | 内蒙古鑫晶新材料有限公司 | Quartz crucible water-cooling mold |
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