CN114380487A - Glass edge polishing method and flame polishing device - Google Patents
Glass edge polishing method and flame polishing device Download PDFInfo
- Publication number
- CN114380487A CN114380487A CN202111654092.1A CN202111654092A CN114380487A CN 114380487 A CN114380487 A CN 114380487A CN 202111654092 A CN202111654092 A CN 202111654092A CN 114380487 A CN114380487 A CN 114380487A
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- 239000011521 glass Substances 0.000 title claims abstract description 128
- 238000005498 polishing Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007524 flame polishing Methods 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000010285 flame spraying Methods 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000007517 polishing process Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 19
- 238000007688 edging Methods 0.000 abstract description 3
- 239000000155 melt Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 7
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- 239000001273 butane Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The application relates to a polishing method and a flame polishing device for a glass edge. The polishing method comprises the following steps: fixing the glass on a rotating platform; flame is adopted to pre-polish the edge of the glass for the first time, and the temperature of the pre-polishing for the first time is 300-500 ℃; pre-polishing the edge of the glass for the second time by adopting flame, wherein the temperature of the pre-polishing for the second time is 500-700 ℃; polishing the edge of the glass by adopting flame at the polishing temperature of 800-1200 ℃; and sequentially carrying out annealing treatment, stage high-temperature heat treatment and cooling on the glass. This application adopts the principle of heating to melt the repair defect, heats sharp defects such as the crazing line that produces, pit after the numerical control edging to glass product for the defect melts and eliminates, and can increase glass's intensity, reduces the discrete type, so can get rid of the crazing line that produces after the edging, can not produce the shortcoming that current three kinds of polishing modes brought again, has higher commercial value.
Description
Technical Field
The present disclosure relates to glass polishing, and particularly to a glass edge polishing method and a flame polishing apparatus.
Background
When the silicate glass is polished, the depressed layer 3-8 μm generated after the glass is edged is completely polished, and the crack layer 10-20 μm below the depressed layer is also polished and removed. The existing polishing technology is divided into three types, namely mechanical polishing, chemical polishing and ultrasonic polishing.
The mechanical polishing is a polishing method which utilizes a polishing wheel to rotate at a high speed for cutting, so that the surface of the material generates plastic deformation, pits and microcracks generated after the edge of the glass is polished are removed, and a smooth surface is obtained. The chemical polishing is to make the microscopic surface defect of the glass in a chemical medium produce chemical reaction and obtain a smooth surface after the reaction. Ultrasonic polishing is to put the workpiece into the abrasive suspension and grind and polish the abrasive on the edge of the glass by means of the oscillation action of ultrasonic waves.
In the course of carrying out the present application, the applicant has found that the above three polishing modes have at least the following technical problems:
1. the oscillation of the polishing wheel in mechanical polishing is large, and when the micro-cracks generated by edging are removed, new micro-cracks are generated by polishing.
2. The proportion of chemical media in chemical polishing changes every time when the chemical media are used, the polishing speed and the polishing depth of glass defects are difficult to control, and the problems that microcracks are not completely removed due to too small polishing amount or the size of glass is affected due to too large polishing amount easily exist.
3. The ultrasonic polishing tool is changed along with the shape of workpieces in different shapes, a plurality of tools need to be prepared to switch different products, the macroscopic force of ultrasonic processing is small, and the polishing effect is poor.
Therefore, there is a need for a new polishing method that can polish silicate glass without the defects caused by the above three polishing methods.
Disclosure of Invention
The embodiment of the application provides a polishing method and a flame polishing device for a glass edge, and solves the technical problem existing in the conventional polishing mode.
In order to solve the above technical problem, the present application is implemented as follows:
in a first aspect, there is provided a method of polishing a glass edge portion, comprising the steps of: fixing the glass on a rotating platform; flame is adopted to pre-polish the edge of the glass for the first time, and the temperature of the pre-polishing for the first time is 300-500 ℃; pre-polishing the edge of the glass for the second time by adopting flame, wherein the temperature of the pre-polishing for the second time is 500-700 ℃; polishing the edge of the glass by adopting flame at the polishing temperature of 800-1200 ℃; and sequentially carrying out annealing treatment, stage high-temperature heat treatment and cooling on the glass.
In a first possible implementation manner of the first aspect, before the first pre-polishing, high temperature resistant protective pads are adhered to the upper side and the lower side of the glass, which are close to the edge of the glass.
In a second possible implementation manner of the first aspect, when the glass edge is first pre-polished, the rotating platform drives the glass to rotate, so that the glass edge is pre-heated at a temperature of 300-.
In a third possible implementation manner of the first aspect, when the glass edge is pre-polished for the second time, the rotating platform drives the glass to rotate, so that the glass edge is heated at the temperature of 500-700 ℃ for 1-2 min.
In a fourth possible implementation manner of the first aspect, when polishing the glass edge, the rotating platform drives the glass to rotate, so that the glass edge is heated at the temperature of 800-.
In a fifth possible implementation manner of the first aspect, during the annealing treatment of the glass, the glass is placed in an annealing furnace through a tool, and the temperature is kept at 200 ℃ for 5-10 min;
when the glass is subjected to high-temperature heat treatment at the glass stage, the glass is sequentially subjected to heat preservation at 300 ℃ for 3-8min and at 400 ℃ for 2-5 min.
In a second aspect, there is provided a flame polishing apparatus applied to the method of polishing a glass edge portion of any one of the first aspect described above, comprising a rotary table, a storage member, a flame throwing tube, a flame throwing member, and a pressure regulating member. The rotary platform is used for bearing glass, and the rotary platform can drive the glass to rotate. The storage piece is arranged on one side of the rotating platform and used for storing combustion liquid. One end of the flame-throwing pipe is connected with the storage piece. The flame-spraying piece is connected with the other end of the flame-spraying pipe and can burn combustion liquid and spray high-temperature flame. The pressure regulating part is arranged on the flame spraying part and used for regulating the size of high-temperature flame.
In a first possible implementation manner of the second aspect, the method further includes: a plurality of high temperature resistant protection pads, a plurality of high temperature resistant protection pads can paste and set up on glass.
In a second possible implementation manner of the second aspect, a plurality of suction cups are arranged on the rotating platform, and the glass is fixed on the rotating platform through the plurality of suction cups.
In a third possible implementation manner of the second aspect, the flame spraying part includes a first flame spraying gun and a second flame spraying gun, the first flame spraying gun and the second flame spraying gun are connected to the flame spraying pipe, and high-temperature flames sprayed by the first flame spraying gun and the second flame spraying gun are respectively located on the upper side and the lower side of the glass edge.
Compared with the prior art, the application has the advantages that:
according to the polishing method and the flame polishing device for the glass edge, the principle of heating and melting to repair defects is adopted, and sharp defects such as microcracks and pits generated after the numerical control edge grinding of a glass product are heated, so that the defects are melted and eliminated, the strength of the glass can be increased, the dispersion is reduced, the microcracks generated after the edge grinding can be removed, the defects caused by the three existing polishing modes can not be generated, and the high commercial value is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of a flame polishing apparatus according to an embodiment of the present application;
FIG. 2 is a flow chart illustrating steps of a method for polishing a glass edge according to an embodiment of the present invention.
Detailed Description
For the existing polishing mode, the mechanical polishing can generate new microcracks by itself; the polishing speed and depth of chemical polishing are difficult to control, and the problems that the micro cracks are not completely removed when the polishing amount is too small or the glass size is influenced when the polishing amount is too large easily exist; ultrasonic polishing needs to prepare a plurality of tools to switch different products, and ultrasonic machining macroscopic force is small, and polishing effect is not good.
The polishing method and the flame polishing device for the glass edge part are a novel polishing method, adopt the heating melting defect repairing principle to heat micro cracks, pits and other sharp defects generated after numerical control edge grinding of a glass product, so that the defects are melted and eliminated, the strength of the glass can be increased, the discrete type is reduced, the micro cracks generated after edge grinding can be removed, and the defects caused by the three existing polishing modes can be avoided.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
As used herein, the terms "first," "second," and the like, do not denote any order or importance, nor do they limit the present application, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.
Please refer to fig. 1, which is a schematic diagram of a flame polishing apparatus according to an embodiment of the present application. As shown in the drawing, the flame polishing apparatus 1 includes a rotary table 2, a storage member 3, a flame throwing tube 4, a flame throwing member 5, and a pressure regulating member 6. The rotary platform 2 is used for carrying the glass S1, and the rotary platform 2 can drive the glass S1 to rotate. In the present embodiment, the plurality of suction pads 21 are provided on the rotary table 2, and the glass S1 is fixed to the rotary table 2 by the plurality of suction pads 21. Specifically, a rotating shaft (not shown) is disposed at the axial center of the rotating platform 2, the rotating shaft is driven by a driving member (not shown) to rotate so as to drive the rotating platform 2 to rotate, and the glass S1 rotates along with the rotating platform 2, but not limited thereto.
The storage 3 is provided on one side of the rotary platform 2, as shown in fig. 1, the storage 3 being located on the right side of the rotary platform 2. One end of the flame-throwing tube 4 is connected to the storage member 3, and the flame-throwing member 5 is connected to the other end of the flame-throwing tube 4, in other words, the storage member 3 is connected to the flame-throwing member 5 through the flame-throwing tube 4. The storage member 3 is used for storing the combustion liquid, the storage member 3 supplies the combustion liquid to the flaming member 5 through the flaming pipe 4, and the flaming member 5 can combust the combustion liquid and spray high-temperature flame to polish the glass S1. Liquefied butane gas is used as the combustion liquid, but the method is not limited to this.
If the high-temperature flame generated by the flaming member 5 directly reaches the polishing temperature to polish the glass S1, the edge of the glass S1 rapidly expands due to the rapid increase in the polishing temperature, causing a crack. Therefore, the glass S1 needs to be heated gradually, in this embodiment, the pressure adjusting member 6 is provided on the flaming member 5, and the size of the high-temperature flame is adjusted by the pressure adjusting member 6, so as to gradually increase the temperature of the high-temperature flame and avoid the edge of the glass S1 from being burst due to rapid expansion.
In this embodiment, the flame spray member 5 includes a first flame spray gun 51 and a second flame spray gun 52, the first flame spray gun 51 and the second flame spray gun 52 are connected to the flame spray tube 4, the first flame spray gun 51 and the second flame spray gun 52 form a double-pipe spray gun, and high-temperature flames sprayed from the first flame spray gun 51 and the second flame spray gun 52 are respectively located at the upper and lower sides of the edge of the glass S1 to perform flame polishing on the upper and lower edges of the arc of the edge of the glass S1.
In the present embodiment, the flame polishing apparatus 1 further includes a plurality of high-temperature resistant protective pads 7. A plurality of high temperature resistant protection pads 7 may be attached to the glass S1. Specifically, since the non-polished portion of the edge of the glass S1 needs to be protected by a high temperature resistant material before polishing, the high temperature resistant pads 7 are attached to the upper and lower sides of the glass S1 near the edge, and the high temperature resistant pads 7 are resistant to at least 1200 ℃.
Referring to fig. 2 and also to fig. 1, fig. 2 is a schematic flow chart illustrating steps of a method for polishing a glass edge according to an embodiment of the present disclosure. As shown in the figure, the glass edge polishing method S of the present embodiment is a method of polishing a glass S1 using the flame polishing apparatus S shown above. The glass edge polishing method S includes the following steps S01 to S05. Wherein:
step S01, mount glass S1. The glass S1 was fixed to the rotating platform 2. Specifically, a protective sheet is attached to the plurality of suction pads 21, and the glass S1 is fixed to the plurality of suction pads 21.
In step S02, the glass is flame pre-polished S1. The edge of the glass S1 was first pre-polished by flame at a temperature of 300-500 ℃. Specifically, high-temperature-resistant protective pads 7 are adhered to the upper surface and the lower surface of the glass S1 close to the edge part, the flame spraying piece 5 is opened, the pressure adjusting piece 6 is adjusted, the temperature of high-temperature flame sprayed by the flame spraying piece 5 is tested, the edge part of the glass S1 is preheated for 3-5min at the temperature of 300-500 ℃, and meanwhile, the rotary platform 2 drives the glass S1 to rotate, so that all the positions of the edge part of the glass S1 are pre-polished.
In step S03, the glass is again flame-prefinished S1. And (3) pre-polishing the edge of the glass S1 for the second time by adopting flame, wherein the temperature of the pre-polishing for the second time is 500-700 ℃. Specifically, the pressure regulating piece 6 is regulated to test the temperature of the high-temperature flame sprayed by the flame spraying piece 5, so that the edge of the glass S1 is heated at the temperature of 500-700 ℃ for 1-2min, and meanwhile, the rotary platform 2 drives the glass S1 to rotate, thereby ensuring that each position of the edge of the glass S1 is completely pre-polished again.
In step S04, the glass is flame polished S1. The flame is adopted to polish the edges of the glass S1, and the polishing temperature is 800-1200 ℃. Specifically, the pressure adjusting part 6 is adjusted, the temperature of the high-temperature flame sprayed by the flame spraying part 5 is tested, the edge of the glass S1 is heated for 30-60S at the temperature of 800-.
Step S05, annealing the glass S1. The glass S1 was subjected to annealing treatment, stepwise high-temperature heat treatment, and cooling in this order. Specifically, after flame polishing is finished, although sharp defects such as microcracks, pits and the like generated at the edge part after numerical control edge polishing can be removed, certain internal stress can be generated at the edge part of the glass S1 due to overhigh temperature of heat treatment, and the strength and stability of the glass can be affected if the internal stress is released untimely, so that after the flame polishing is finished, the glass S1 is placed in an annealing furnace through a tool, the annealing furnace is kept at 200 ℃ for 5-10min, then heating is continued, the glass S1 is kept at 300 ℃ for 3-8min and 400 ℃ for 2-5min in sequence, a heating system is closed after the heat preservation is finished, the temperature is slowly reduced in the annealing furnace, a furnace door can be opened after the temperature is reduced to 100 ℃, the furnace door can be cooled at ambient temperature, and the process can release the internal stress at the edge part of the glass S1.
In summary, the present application provides a method of polishing a glass edge and a flame polishing apparatus. The principle of heating and melting to repair defects is adopted to heat sharp defects such as microcracks, pits and the like generated after the numerical control edge grinding of the glass product, so that the defects are melted and eliminated, the strength of the glass can be increased, and the discrete type is reduced, therefore, the microcracks generated after the edge grinding can be removed, the defects caused by the three polishing modes can not be generated, and the method has high commercial value.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for polishing an edge of glass, comprising the steps of:
fixing the glass on a rotating platform;
pre-polishing the edge of the glass for the first time by adopting flame, wherein the temperature of the pre-polishing for the first time is 300-500 ℃;
pre-polishing the edge of the glass for the second time by adopting flame, wherein the temperature of the pre-polishing for the second time is 500-700 ℃;
polishing the edge of the glass by adopting flame, wherein the polishing temperature is 800-1200 ℃;
and sequentially carrying out annealing treatment, stage high-temperature heat treatment and cooling on the glass.
2. A method of polishing an edge portion of a glass as defined in claim 1, wherein a high temperature protective pad is stuck to portions of both upper and lower sides of the glass near the edge of the glass before the first preliminary polishing.
3. The method as claimed in claim 1, wherein the glass edge is pre-polished by the rotary platen for 3-5min at 300-500 ℃ while the glass edge is pre-polished by the rotary platen.
4. The method as claimed in claim 1, wherein the glass edge is pre-polished for the second time by rotating the glass with the rotary platen, so that the glass edge is heated at a temperature of 500 ℃ and 700 ℃ for 1-2 min.
5. The method as claimed in claim 1, wherein the glass edge is polished by rotating the glass with the rotary platen, and the glass edge is heated at 800-1200 ℃ for 30-60 s.
6. The method for polishing the edge of the glass according to claim 1, wherein the glass is placed in an annealing furnace through a tool during annealing treatment of the glass, and is kept at 200 ℃ for 5-10 min; when the glass is subjected to high-temperature heat treatment at the stage, the glass is sequentially subjected to heat preservation at 300 ℃ for 3-8min and at 400 ℃ for 2-5 min.
7. A flame polishing apparatus to be applied to the glass edge polishing method according to any one of claims 1 to 6, characterized by comprising:
the rotary platform is used for bearing the glass and can drive the glass to rotate;
the storage piece is arranged on one side of the rotating platform and used for storing combustion liquid;
a flame spray pipe, one end of which is connected with the storage member;
the flame ejection piece is connected with the other end of the flame ejection pipe and can combust the combustion liquid and eject high-temperature flame;
the pressure regulating part is arranged on the flame spraying part and used for regulating the size of the high-temperature flame.
8. The flame polishing apparatus of claim 7, further comprising: and the high-temperature-resistant protection pads can be pasted on the glass.
9. The flame polishing apparatus of claim 7, wherein a plurality of suction cups are provided on the rotary platform, and the glass is fixed to the rotary platform by the plurality of suction cups.
10. The flame polishing apparatus according to claim 7, wherein the flame spraying member includes a first flame spraying gun and a second flame spraying gun, the first flame spraying gun and the second flame spraying gun are connected to the flame spraying pipe, and high-temperature flames sprayed from the first flame spraying gun and the second flame spraying gun are respectively located at upper and lower sides of the glass edge portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111654092.1A CN114380487A (en) | 2021-12-30 | 2021-12-30 | Glass edge polishing method and flame polishing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111654092.1A CN114380487A (en) | 2021-12-30 | 2021-12-30 | Glass edge polishing method and flame polishing device |
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| CN114380487A true CN114380487A (en) | 2022-04-22 |
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| CN202111654092.1A Pending CN114380487A (en) | 2021-12-30 | 2021-12-30 | Glass edge polishing method and flame polishing device |
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Application publication date: 20220422 |