CN112479559A - Preparation process of high borosilicate glass tube - Google Patents
Preparation process of high borosilicate glass tube Download PDFInfo
- Publication number
- CN112479559A CN112479559A CN202011409415.6A CN202011409415A CN112479559A CN 112479559 A CN112479559 A CN 112479559A CN 202011409415 A CN202011409415 A CN 202011409415A CN 112479559 A CN112479559 A CN 112479559A
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- CN
- China
- Prior art keywords
- glass tube
- raw materials
- borosilicate glass
- glass
- melting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000005388 borosilicate glass Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims description 7
- 239000002994 raw material Substances 0.000 claims abstract description 50
- 239000011521 glass Substances 0.000 claims abstract description 32
- 238000002844 melting Methods 0.000 claims abstract description 29
- 230000008018 melting Effects 0.000 claims abstract description 29
- 238000005303 weighing Methods 0.000 claims abstract description 23
- 239000006060 molten glass Substances 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000000137 annealing Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 239000000156 glass melt Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B1/00—Preparing the batches
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/187—Stirring devices; Homogenisation with moving elements
Abstract
One or more embodiments of the present specification provide a process for preparing a high borosilicate glass tube, comprising the steps of; heating and melting, namely conveying the mixed raw materials into a melting tank furnace, and heating and melting by an electrode to obtain molten glass; melting, conveying and cooling, namely flowing out the molten glass through a conveying channel, and cooling; drawing out the mold, naturally dropping the molten glass through the mold to form a glass tube, and introducing gas into the center of the mold during tube making; cutting the tube, wherein the glass tube vertically falls down and is output through the cooling channel, and the preliminarily hardened glass tube is cut into glass tubes with equal length; annealing, namely conveying the glass tubes with equal length to an annealing furnace for annealing to obtain a high borosilicate glass tube finished product; according to the invention, the feeding ratio of the raw materials is controlled by the weighing and blanking mechanism, so that the accuracy of the raw material ratio is improved, the raw materials are stirred by the graphite rod during melting, the uniformity of the raw materials in the glass is improved, and the quality of the high borosilicate glass tube is further improved.
Description
Technical Field
One or more embodiments of the present disclosure relate to the technical field of high borosilicate glass production, and more particularly, to a process for producing a high borosilicate glass tube.
Background
The high borosilicate glass has good fire resistance and high physical strength, compared with common glass, has no toxic or side effect, and has greatly improved mechanical property, thermal stability, water resistance, alkali resistance, acid resistance and other properties, so the high borosilicate glass can be widely used in various fields of chemical industry, aerospace, military, families, hospitals and the like, can be made into various products such as lamps, tableware, target discs, telescope lenses, washing machine observation holes, microwave oven discs, solar water heaters and the like, has good popularization value and social benefit, is an important material for manufacturing high-durability glass instruments such as beakers and test tubes, and is of course far more applied, and is applied in other fields such as vacuum tubes, heaters of aquariums, lenses of electric torches, professional lighters, tobacco pipes, glass ball artworks, high-quality beverage glass vessels, solar energy utilization vacuum tubes and the like, and is also applied in the field of aerospace simultaneously, for example, the insulating tiles of space shuttles are also coated with high borosilicate glass.
The existing production process of the high borosilicate glass tube can not ensure the quality of the high borosilicate glass during production, and meanwhile, the production efficiency of the high borosilicate glass tube is lower, thus being not beneficial to wide popularization and use.
Disclosure of Invention
In view of the above, it is an object of one or more embodiments of the present disclosure to provide a high borosilicate glass tube manufacturing process that solves one or all of the above problems.
In one or more embodiments of the present specification, a process for preparing a high borosilicate glass tube includes the following steps:
firstly, preparing raw materials, namely crushing the raw materials for preparing the high borosilicate glass, and mixing the raw materials according to a certain proportion;
secondly, heating and melting, namely conveying the mixed raw materials into a melting tank furnace, and heating and melting the raw materials through electrodes to obtain molten glass;
thirdly, melting, conveying and cooling, wherein the molten glass flows out through a conveying channel, and is cooled;
pulling out the mold, naturally dropping the molten glass through the mold to form a glass tube, and introducing gas into the center of the mold during tube making;
fifthly, cutting the tube, wherein the glass tube vertically falls down and is output through a cooling channel, and the preliminarily hardened glass tube is cut into glass tubes with equal length;
sixthly, annealing; and conveying the glass tubes with equal length to an annealing furnace for annealing to obtain the high borosilicate glass tube finished product.
Optionally, in the first step, the raw materials for preparing the high borosilicate glass are respectively added into independent raw material bins, and weighing and blanking mechanisms are installed in the independent raw material bins.
Optionally, the weighing and blanking mechanism comprises a lower bracket, a supporting groove is formed in the upper portion of the lower bracket, a raw material bin is slidably mounted on the supporting groove, a placing groove is formed in the supporting groove, a driving electric cylinder is mounted in the placing groove, a sliding block is pivoted to the output end of the driving electric cylinder, the sliding block is slidably mounted in the placing groove, a weighing module is mounted on the sliding block, and the driving electric cylinder drives the weighing module to be stored in the placing groove or extend out of the placing groove.
Optionally, the parameters for melting the raw materials in the melting tank furnace in the second step are that the temperature in the melting tank furnace is raised to 1400-1500 ℃, and the raw materials are burned in the melting tank furnace for 6-8 hours to obtain the glass melt.
Optionally, in the second step, when the raw materials are heated and melted, the glass melt is slowly stirred by using a graphite rod to reach a molten state.
Optionally, a temperature measuring electrode is installed in the conveying channel in the third step, and is used for adjusting the temperature of the molten glass.
Optionally, the temperature of the molten glass entering the mold in the fourth step is controlled to be 1000-.
Optionally, the annealing in the step six specifically comprises: and (3) conveying the equilong glass tube into an annealing furnace with the temperature of 650-680 ℃, preserving the heat for 3-5 hours, then cooling to 180-200 ℃ for 2-3 hours, taking out the equilong glass tube, and naturally cooling to room temperature to obtain a high borosilicate glass tube finished product.
From the above, it can be seen that the high borosilicate glass tube preparation process provided in one or more embodiments of the present specification controls the feeding and proportioning of the raw materials by the weighing and blanking mechanism, improves the accuracy of the proportioning of the raw materials, and improves the uniformity of the raw materials in the glass during melting by stirring the raw materials by the graphite rod, thereby improving the quality of the high borosilicate glass tube.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.
FIG. 1 is a schematic view of a weighing and blanking mechanism according to one or more embodiments of the present disclosure;
FIG. 2 is a schematic view of a weigh blanking mechanism according to one or more embodiments of the present disclosure when weighing;
wherein, lower bracket 1, support groove 2, former feed bin 3, driving electric jar 4, slider 5, weighing module 6.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.
It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
One or more embodiments of the present disclosure provide a process for preparing a high borosilicate glass tube, comprising the steps of:
firstly, raw material preparation, namely crushing raw materials for preparing high borosilicate glass, mixing the raw materials according to a certain proportion, loading the raw materials for preparing the high borosilicate glass into a ton bag, respectively adding the raw materials into independent raw material bins 3 by hoisting during batching, and installing weighing and blanking mechanisms in the independent raw material bins 3 for controlling the adding proportion of the raw materials;
and secondly, heating and melting, namely conveying the mixed raw materials into a melting tank furnace, heating by an electrode for melting, heating the inside of the melting tank furnace to 1400 ℃ plus 1500 ℃, burning the raw materials in the melting tank furnace for 6-8 hours to obtain glass melt, and slowly stirring the glass melt by using a graphite rod when the raw materials are heated and melted to reach a molten state.
Thirdly, melting, conveying and cooling, namely flowing the molten glass out of the conveying channel, cooling, wherein a temperature measuring electrode is arranged in the conveying channel, displaying the temperature of the molten glass when the molten glass passes through the conveying channel, and controlling the conveying speed of the molten glass when the temperature has deviation so as to adjust the cooling temperature of the molten glass;
pulling out the mold, naturally dropping the molten glass through the mold to prepare a glass tube, introducing gas into the center of the mold during tube preparation, and controlling the temperature of the molten glass entering the mold to be 1000-1200 ℃;
fifthly, cutting the tube, wherein the glass tube vertically falls down and is output through a cooling channel, and the preliminarily hardened glass tube is cut into glass tubes with equal length in a horizontal or vertical mode;
sixthly, annealing; and (3) conveying the equilong glass tube into an annealing furnace with the temperature of 650-680 ℃, preserving the heat for 3-5 hours, then cooling to 180-200 ℃ for 2-3 hours, taking out the equilong glass tube, and naturally cooling to room temperature to obtain a high borosilicate glass tube finished product.
In an embodiment, as shown in the figure, the weighing and blanking mechanism comprises a lower bracket 1, a supporting groove 2 is formed in the upper portion of the lower bracket 1, a raw material bin 3 is slidably mounted on the supporting groove 2, a placing groove is formed in the supporting groove 2, a driving electric cylinder 4 is mounted in the placing groove, a sliding block 5 is pivoted to the output end of the driving electric cylinder 4, the sliding block 5 is slidably mounted in the placing groove, a weighing module 6 is mounted on the sliding block 5, and the driving electric cylinder 4 drives the weighing module 6 to be accommodated in the placing groove or extend out of the placing groove. When feeding in to former feed bin 3, drive electricity jar 4 drives weighing module 6 and accomodates in the standing groove, strike weighing module 6 when avoiding the material loading, cause the damage, after reinforced completion, drive electricity jar 4 drives slider 5 and moves up, slider 5 drives weighing module 6 and shifts up, outside weighing module 6 extended the standing groove, weigh former feed bin 3, when raw material bin 3 was reinforced outwards, can learn reinforced how much according to weighing module 6's reading.
According to the invention, the feeding ratio of the raw materials is controlled by the weighing and blanking mechanism, so that the accuracy of the raw material ratio is improved, the raw materials are stirred by the graphite rod during melting, the uniformity of the raw materials in the glass is improved, and the quality of the high borosilicate glass tube is further improved.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.
While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (8)
1. A high borosilicate glass tube preparation process is characterized by comprising the following steps:
firstly, preparing raw materials, namely crushing the raw materials for preparing the high borosilicate glass, and mixing the raw materials according to a certain proportion;
secondly, heating and melting, namely conveying the mixed raw materials into a melting tank furnace, and heating and melting the raw materials through electrodes to obtain molten glass;
thirdly, melting, conveying and cooling, wherein the molten glass flows out through a conveying channel, and is cooled;
pulling out the mold, naturally dropping the molten glass through the mold to form a glass tube, and introducing gas into the center of the mold during tube making;
fifthly, cutting the tube, wherein the glass tube vertically falls down and is output through a cooling channel, and the preliminarily hardened glass tube is cut into glass tubes with equal length;
annealing; and conveying the glass tubes with equal length to an annealing furnace for annealing to obtain the high borosilicate glass tube finished product.
2. The borosilicate glass tube manufacturing process according to claim 1, wherein in the first step, the raw materials for manufacturing the borosilicate glass are respectively added into independent raw material bins, and weighing and blanking mechanisms are installed in the independent raw material bins.
3. The borosilicate glass tube preparation process according to claim 2, wherein the weighing and blanking mechanism comprises a lower bracket, a supporting groove is arranged on the upper portion of the lower bracket, a raw material bin is slidably arranged on the supporting groove, a placing groove is arranged in the supporting groove, a driving electric cylinder is arranged in the placing groove, a sliding block is pivoted on the output end of the driving electric cylinder, the sliding block is slidably arranged in the placing groove, a weighing module is arranged on the sliding block, and the driving electric cylinder drives the weighing module to be accommodated in the placing groove or extend out of the placing groove.
4. The process for preparing high borosilicate glass tube according to claim 1, wherein the parameters for melting the raw materials in the melting tank furnace in the second step are that the temperature in the melting tank furnace is raised to 1400-1500 ℃, and the raw materials are burned in the melting tank furnace for 6-8 hours to obtain the glass melt.
5. The process for preparing high borosilicate glass tube according to claim 1, wherein in the second step, the raw material is slowly stirred by graphite rod to melt the glass melt when heated.
6. The process for preparing a high borosilicate glass tube according to claim 1, wherein a temperature measuring electrode is installed in the conveying channel in the third step for adjusting the temperature of the glass melt.
7. The process for preparing borosilicate glass tube as defined in claim 1, wherein the temperature of the molten glass entering the mold in the fourth step is controlled to be 1000-1200 ℃.
8. The process for preparing the high borosilicate glass tube according to claim 1, wherein the annealing in the sixth step is specifically performed by: and (3) conveying the equilong glass tube into an annealing furnace with the temperature of 650-680 ℃, preserving the heat for 3-5 hours, then cooling to 180-200 ℃ for 2-3 hours, taking out the equilong glass tube, and naturally cooling to room temperature to obtain a high borosilicate glass tube finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011409415.6A CN112479559A (en) | 2020-12-04 | 2020-12-04 | Preparation process of high borosilicate glass tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011409415.6A CN112479559A (en) | 2020-12-04 | 2020-12-04 | Preparation process of high borosilicate glass tube |
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| Publication Number | Publication Date |
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| CN112479559A true CN112479559A (en) | 2021-03-12 |
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| CN202011409415.6A Pending CN112479559A (en) | 2020-12-04 | 2020-12-04 | Preparation process of high borosilicate glass tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920442A (en) * | 2022-05-12 | 2022-08-19 | 信和光能(安徽)有限公司 | Production process of silicon-boron glass |
| CN115259657A (en) * | 2022-08-03 | 2022-11-01 | 张学新 | Porcelain red opaque high borosilicate heat-resistant glass and preparation process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006069881A (en) * | 2004-08-03 | 2006-03-16 | Nippon Electric Glass Co Ltd | Mixed raw material for glass, method of preparing the same and method of manufacturing glass article |
| CN104995140A (en) * | 2012-08-30 | 2015-10-21 | 康宁股份有限公司 | Apparatus and methods of making a glass tube by drawing from molten glass |
| CN205635345U (en) * | 2016-05-05 | 2016-10-12 | 河源市源日通能源有限公司 | Borosilicate glass's automatic blending system |
| CN109279776A (en) * | 2018-08-31 | 2019-01-29 | 江苏京展能源科技有限公司 | Solar energy evacuated effective glass tube of one kind and preparation method thereof |
| CN109896741A (en) * | 2017-12-08 | 2019-06-18 | 辽宁省轻工科学研究院 | A kind of overlength, the preparation method of high-accuracy boron-containing glass pipe |
| CN110668680A (en) * | 2019-10-21 | 2020-01-10 | 扬州市丰泽特种电缆材料有限公司 | Production process of high borosilicate glass tube |
-
2020
- 2020-12-04 CN CN202011409415.6A patent/CN112479559A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006069881A (en) * | 2004-08-03 | 2006-03-16 | Nippon Electric Glass Co Ltd | Mixed raw material for glass, method of preparing the same and method of manufacturing glass article |
| CN104995140A (en) * | 2012-08-30 | 2015-10-21 | 康宁股份有限公司 | Apparatus and methods of making a glass tube by drawing from molten glass |
| CN205635345U (en) * | 2016-05-05 | 2016-10-12 | 河源市源日通能源有限公司 | Borosilicate glass's automatic blending system |
| CN109896741A (en) * | 2017-12-08 | 2019-06-18 | 辽宁省轻工科学研究院 | A kind of overlength, the preparation method of high-accuracy boron-containing glass pipe |
| CN109279776A (en) * | 2018-08-31 | 2019-01-29 | 江苏京展能源科技有限公司 | Solar energy evacuated effective glass tube of one kind and preparation method thereof |
| CN110668680A (en) * | 2019-10-21 | 2020-01-10 | 扬州市丰泽特种电缆材料有限公司 | Production process of high borosilicate glass tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920442A (en) * | 2022-05-12 | 2022-08-19 | 信和光能(安徽)有限公司 | Production process of silicon-boron glass |
| CN115259657A (en) * | 2022-08-03 | 2022-11-01 | 张学新 | Porcelain red opaque high borosilicate heat-resistant glass and preparation process thereof |
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