CN104016572A - Manufacturing method and device of float glass - Google Patents
Manufacturing method and device of float glass Download PDFInfo
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- CN104016572A CN104016572A CN201410309085.1A CN201410309085A CN104016572A CN 104016572 A CN104016572 A CN 104016572A CN 201410309085 A CN201410309085 A CN 201410309085A CN 104016572 A CN104016572 A CN 104016572A
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Abstract
The invention discloses a manufacturing method and device of float glass, particularly a manufacturing method and device of ultrathin float glass. The manufacturing method comprises the following steps: a glass tape, which is formed by molten glass flowing out of a flow channel and a flow tank, is continuously supplied to a horizontal bath surface of a molten metal tank containing molten metal; and in the air isolation state of introducing protective gas into the clearance formed between the flow control flashboard and the flow channel and flow tank, the flow control flashboard moves up and down according to the flow change of the glass in the flow channel. The manufacturing method and device can effectively reduce the problem of increase of the quantities of tin ash and calculuses caused by volatile matters generated due to the clearance between the flow flashboard and the flow channel and flow tank, and the quantity of the calculuses generated due to the volatile matters in the glass tape can be kept within 0-1/m<2>.
Description
Technical field
The present invention relates to a kind of manufacture method and device of float glass, relate in particular to a kind of manufacture method and device of thin float glass.
Background technology
At present, in float glass industry, in order to control the glass flow rate that flows into molten tin bath, generally can take to arrange one or more flow control flashboard on the passage of runner chute, this flow flashboard need to carry out continual flow control to glass, to stablize the required load of tin groove forming.Because this flashboard need to move up and down according to the variation of flow, between the front arch of it and runner chute, just must there is spaced slot.Due to apertured existence, one side glass metal at high temperature some components can volatilize, and its volatile matter can be assembled on the peripheral equipments such as flashboard, waits to gather to a certain degree, can form drop and flow in glass metal and go along periphery, on the other hand particularly between near the flashboard of molten tin bath one side and front arch owing to there being spaced slot, can cause the air of admission passage with from the tin steam generation chemical reaction in molten tin bath, and form " tin ash " and other oxide compounds that tin compound is namely commonly called as, the drop that these several glass volatilization condensation products and tin ash form is due to temperature, form different from below homogeneous glass liquid, can not again form uniform component with glass, often with calculus and other defect, be present in glass, this not only affects the yield rate of glass, especially in the situation that producing ultra-thin glass production, when serious, even can cause the sheet glass plate accident of breaking, the output that is unfavorable for safety in production and raising glass, in current common way, be regularly to this place, to adopt nitrogen to clean purging, but can produce on normal stably manufactured the impact of long period when purging.To this, the generation that reduces glass metal volatile matter and tin ash is one of key factor improving the comprehensive good article rate of sheet glass.
Summary of the invention
In view of this, the invention provides a kind of manufacture method and manufacturing installation thereof of float glass, described manufacturing method and apparatus can effectively reduce because the gap reason between flow flashboard and runner, chute produces the increase problem that volatile matter causes tin ash and calculus quantity, and the quantity of the calculus producing because of volatile matter in gained glass ribbon can maintain 0～1/m
2in.
For solving above technical problem, the technical scheme of first aspect provided by the invention is a kind of manufacture method of float glass, comprises the following steps:
To the level that accommodates the molten metal bath of the molten metal face of bathing, supply with continuously the melten glass flowing out and form glass ribbon from runner, chute; Runner, chute top are provided with the first lid, are respectively runner the first lid and chute the first lid; Flow control flashboard is arranged between runner the first lid and chute the first lid, and flow control flashboard moves up and down to control the melten glass liquid that flows into chute in runner; Between runner the first lid and chute the first lid and flow control flashboard, there is the first gap, is respectively runner the first gap and chute the first gap;
In described the first gap, pass into shielding gas to be formed with under the state of isolated air-flow, flow control flashboard moves up and down according to the variation of glass flow rate in runner.
Preferably, described shielding gas is a kind of in nitrogen, helium, argon gas.
Preferably, the temperature of described shielding gas is 300-500 ℃.
Preferably, described isolated air-flow is to form in the following manner:
Runner the second lid and chute the second lid are set respectively above runner the first lid and chute the first lid, and between runner the second lid, chute the second lid and flow control flashboard, form the second gap, be respectively runner the second gap and chute the second gap; The width in the second gap is less than the width in the first gap;
By the through hole being arranged in the first lid and the second lid, in the first gap, pass into shielding gas respectively, shielding gas pass into direction and horizontal plane has certain angle [alpha], shielding gas moves downward and forms isolated air-flow under the effect of the second lid.
Preferably, described angle [alpha] is 15 °-30 °.
Preferably, the isolated air-flow forming in described runner the first gap is the isolated air-flow of runner; The isolated air-flow forming in chute the first gap is the isolated air-flow of chute; The pressure ratio of the isolated air-flow of described runner and the isolated air-flow of chute is 1:1, and throughput ratio is 1:2.
The application also provides the technical scheme of second aspect, i.e. a kind of manufacturing installation of float glass has:
The runner of confession melten glass circulation, confession melten glass flow into the chute of metal bath; To the level that accommodates the molten metal bath of the molten metal face of bathing, supply with continuously the melten glass flowing out and form glass ribbon from runner, chute; Runner, chute top are provided with the first lid, are respectively runner the first lid and chute the first lid; Flow control flashboard is arranged between runner the first lid and chute the first lid, and flow control flashboard moves up and down to control the melten glass liquid that flows into chute in runner; Between runner the first lid and chute the first lid and flow control flashboard, there is the first gap, is respectively runner the first gap and chute the first gap; Runner the second lid and chute the second lid are set respectively above runner the first lid and chute the first lid, and between runner the second lid, chute the second lid and flow control flashboard, form the second gap, be respectively runner the second gap and chute the second gap; The width in the second gap is less than the width in the first gap;
By the through hole being arranged in the first lid, in the first gap, pass into shielding gas, shielding gas pass into direction and horizontal plane has certain angle [alpha], shielding gas moves downward and forms isolated air-flow under the effect of the second lid.
Preferably, the through hole being arranged on described in the first lid connects outside gas heater and stable-pressure device.
Preferably, described angle [alpha] is 15 °-30 °.
Compared with prior art, it is described in detail as follows the application:
The manufacture method of float glass described in the application, comprises the following steps:
Flow control flashboard is set on the passage of runner and chute, and the two sides of flow flashboard are provided with gap respectively and between runner and the top of chute;
At described gap location, be formed with under the state of isolated air-flow, flow flashboard moves up and down according to the variation of glass flow rate in runner; Described air-flow is for adopting rare gas element to form.
The application adopts the gap location in flow flashboard two sides to form a kind of isolated air-flow; thereby reduce the air capacity that enters runner chute inside by place, gap, flow flashboard both sides, reduce and the shielding gas existing in molten tin bath or the air capacity of tin steam generation chemical reaction.The amount of the compositions such as airborne oxygen and tin steam generation chemical reaction reduces, the quantity of the calculus such as the interior tin ash of obtained float glass and volatile matter, size etc. can be effectively controlled, the application's mode in actual application, gained float glass internal cause volatile matter and produce can be controlled at≤1～3/m of quantity of calculus
2in.
Accompanying drawing explanation
Fig. 1 is that existing mode contrasts 1 preparation facilities structural representation;
Fig. 2 is the preparation facilities structural representation of the application's the first embodiment contrast 2;
Fig. 3 is the preparation facilities structural representation of the application's the second embodiment contrast 3;
Fig. 4 is the schematic diagram that in Fig. 3, embodiment the first lid inner via hole passes into the direction of shielding gas and the angle [alpha] of horizontal plane.
Embodiment
The manufacture method of the application's float glass, comprises the following steps:
To the level that accommodates the molten metal bath of the molten metal face of bathing, supply with continuously the melten glass flowing out and form glass ribbon from runner, chute; Runner, chute top are provided with the first lid, are respectively runner the first lid and chute the first lid; Flow control flashboard is arranged between runner the first lid and chute the first lid, and flow control flashboard moves up and down to control the melten glass liquid that flows into chute in runner; Between runner the first lid and chute the first lid and flow control flashboard, there is the first gap, is respectively runner the first gap and chute the first gap;
In described the first gap, pass into shielding gas to be formed with under the state of isolated air-flow, flow control flashboard moves up and down according to the variation of glass flow rate in runner.
In addition, the mode that described in the application, the generation type of isolated air-flow can adopt the application to provide: runner the second lid and chute the second lid are set respectively above runner the first lid and chute the first lid, and between runner the second lid, chute the second lid and flow control flashboard, form the second gap, be respectively runner the second gap and chute the second gap; The width in the second gap is less than the width in the first gap;
By the through hole being arranged in the first lid, in the first gap, pass into shielding gas, shielding gas pass into direction and horizontal plane has certain angle [alpha], shielding gas moves downward and forms isolated air-flow under the effect of the second lid.
In the application, the design parameter such as the throughput ratio that passes into angle [alpha], isolated air-flow of kind, temperature and the shielding gas of the shielding gas that adopts and pressure ratio can play more excellent effect to the application's scheme.
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with specific embodiment, the present invention is described in further detail.
Contrast 1---existing conventional embodiment:
To the level that accommodates the molten metal bath 16 of the molten metal face of bathing, supply with continuously the melten glass flowing out and form glass ribbon from runner 14, chute 15, described glass ribbon is mentioned from described bath face, and be transported to leer by a plurality of conveying rollers; On the passage of runner 14 and chute 15, flow control flashboard 11 is set, runner 14, chute 15 tops are provided with runner the first lid 12-2 and chute the first lid 12-1, flow control flashboard 11, between runner the first lid 12-2 and chute the first lid 12-1, and moves up and down to control the melten glass liquid of the interior inflow chute 15 of runner 14.Between runner the first lid 12-2 and chute the first lid 12-1 and flow control flashboard 11, have gap, be respectively runner the first gap 13-2 and chute the first gap 13-1.Appliance arrangement is with reference to accompanying drawing 1.
Contrast 2---the application's the first forms isolated air-flow embodiment:
To the level that accommodates the molten metal bath 26 of the molten metal face of bathing, supply with continuously the melten glass flowing out and form glass ribbon from runner 24, chute 25, described glass ribbon is mentioned from described bath face, and be transported to leer by a plurality of conveying rollers; On the passage of runner 24 and chute 25, flow control flashboard 21 is set, runner 24, chute 25 tops are provided with runner the first lid 22-2 and chute the first lid 22-1, flow control flashboard 21, between runner the first lid 22-2 and chute the first lid 22-1, and moves up and down to control the melten glass liquid of the interior inflow chute 25 of runner 24.Between runner the first lid 22-2 and chute the first lid 22-1 and flow control flashboard 21, have the first gap, be respectively runner the first gap 23-2 and chute the first gap 23-1.
The application's embodiment with contrast 1 difference and be: in runner the first gap 23-2 and chute the first gap 23-1, all pass into shielding gas to form isolated air-flow; shielding gas can be selected from nitrogen, helium, argon gas any rare gas element; and the mode that passes into of shielding gas is for simply passing into from the first gap top or side direction, can adopt the top of accompanying drawing 2 runner that is shown in the first lid 22-3 and chute the second lid 22-1 that the mode of ventpipe 27 is set.
Appliance arrangement can be with reference to accompanying drawing 2.
Contrast 3---the application's the second forms isolated air-flow embodiment:
To the level that accommodates the molten metal bath 36 of the molten metal face of bathing, supply with continuously the melten glass flowing out and form glass ribbon from runner 34, chute 35, described glass ribbon is mentioned from described bath face, and be transported to leer by a plurality of conveying rollers; On the passage of runner 34 and chute 35, flow control flashboard 31 is set, runner 34, chute 35 tops are provided with runner the first lid 32-2 and chute the first lid 32-1, flow control flashboard 31 is 32-1 between runner the first lid 32-2 and chute the first lid, and moves up and down to control the melten glass liquid of the interior inflow chute 35 of runner 34.Between runner the first lid 32-2 and chute the first lid 32-1 and flow control flashboard 31, have the first gap, be respectively runner the first gap 33-2 and chute the first gap 33-1.In runner the first gap 33-2 and chute the first gap 33-1, all pass into shielding gas to form isolated air-flow, shielding gas can be selected from nitrogen, helium, argon gas any rare gas element.
The application's embodiment with contrast 2 differences and be, the generation type of isolated air-flow is different, be specially: runner the second lid 37-2 and chute the second lid 37-1 are set respectively above runner the first lid 32-2 and chute the first lid 32-1, and between runner the second lid 37-2, chute the second lid 37-1 and flow control flashboard 31, form the second gap, be respectively runner the second gap 38-2 and chute the second gap 38-1; The width in the second gap is less than the width in the first gap; by the through hole 39 being arranged in the first lid, in the first gap, pass into shielding gas; shielding gas pass into direction and horizontal plane has certain angle, shielding gas moves downward and forms isolated air-flow under the effect of the second lid.
Appliance arrangement can be with reference to accompanying drawing 3 and accompanying drawing 4.
Embodiment 1---controlled trial
Adopt that aforementioned 3 kinds of modes also contrast 1, the mode of contrast 2, contrast 3 is respectively used to manufacture thin float glass (thickness of glass is below 1mm), prepared glass ribbon width and thickness are 2m*0.8m.Wherein, shielding gas temperature T; width ratio D (the L2/L1 in the second gap and the first gap; L2 is the second cover block and regulates the gap between flashboard; L1 is the first cover block and regulates the gap between flashboard); the angle α that passes into direction and horizontal plane of shielding gas, sampling is by the quantity x (individual) of the calculus defect in each subregion of each sheet glass of electron microscope observation.
The data of the calculus that the glass ribbon sampling of each contrast of gained obtains with Observe and measure by electron microscope can see the following form:
Table 1---glass detected result (shielding gas temperature)
Table 2---glass detected result (gap width ratio)
Table 3---glass detected result (gas passes into angle)
Interpretation:
By above adjustment and test known; adopt the isolated mode of the second air-flow, shielding gas temperature is more than 300 degree, and the width ratio in the second gap and the first gap is at 5/20-8/20; gas pass into angle be 15～30 ° for best, can solve and regulate flashboard place to produce the problem of calculus.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a manufacture method for float glass, comprises the following steps:
To the level that accommodates the molten metal bath of the molten metal face of bathing, supply with continuously the melten glass flowing out and form glass ribbon from runner, chute; Runner, chute top are provided with the first lid, are respectively runner the first lid and chute the first lid; Flow control flashboard is arranged between runner the first lid and chute the first lid, and flow control flashboard moves up and down to control the melten glass liquid that flows into chute in runner; Between runner the first lid and chute the first lid and flow control flashboard, there is the first gap, is respectively runner the first gap and chute the first gap; It is characterized in that:
In described the first gap, pass into shielding gas to be formed with under the state of isolated air-flow, flow control flashboard moves up and down according to the variation of glass flow rate in runner.
2. the manufacture method of float glass according to claim 1, is characterized in that: described shielding gas is one or more in nitrogen, helium, argon gas.
3. the manufacture method of float glass according to claim 1, is characterized in that: the temperature of described shielding gas is 300-500 ℃.
4. the manufacture method of float glass according to claim 1, is characterized in that: described isolated air-flow is to form in the following manner:
Runner the second lid and chute the second lid are set respectively above runner the first lid and chute the first lid, and between runner the second lid, chute the second lid and flow control flashboard, form the second gap, be respectively runner the second gap and chute the second gap; The width in the second gap is less than the width in the first gap;
By the through hole being arranged in the first lid, in the first gap, pass into shielding gas, shielding gas pass into direction and horizontal plane has certain angle [alpha], shielding gas moves downward and forms isolated air-flow under the effect of the second lid.
5. the manufacture method of float glass according to claim 4, is characterized in that: described angle [alpha] is 15 °-30 °.
6. the manufacture method of float glass according to claim 4, is characterized in that: the isolated air-flow forming in described runner the first gap is the isolated air-flow of runner; The isolated air-flow forming in chute the first gap is the isolated air-flow of chute; The pressure ratio of the isolated air-flow of described runner and the isolated air-flow of chute is 1:1, and throughput ratio is 1:2.
7. a manufacturing installation for float glass, has:
The runner of confession melten glass circulation, confession melten glass flow into the chute of metal bath; To the level that accommodates the molten metal bath of the molten metal face of bathing, supply with continuously the melten glass flowing out and form glass ribbon from runner, chute; Runner, chute top are provided with the first lid, are respectively runner the first lid and chute the first lid; Flow control flashboard is arranged between runner the first lid and chute the first lid, and flow control flashboard moves up and down to control the melten glass liquid that flows into chute in runner; Between runner the first lid and chute the first lid and flow control flashboard, there is the first gap, is respectively runner the first gap and chute the first gap; Runner the second lid and chute the second lid are set respectively above runner the first lid and chute the first lid, and between runner the second lid, chute the second lid and flow control flashboard, form the second gap, be respectively runner the second gap and chute the second gap; The width in the second gap is less than the width in the first gap;
By the through hole being arranged in the first lid, in the first gap, pass into shielding gas, shielding gas pass into direction and horizontal plane has certain angle [alpha], shielding gas moves downward and forms isolated air-flow under the effect of the second lid.
8. the manufacturing installation of float glass according to claim 7, is characterized in that: described in the through hole that is arranged in the first lid connect outside gas heater and stable-pressure device.
9. the manufacturing installation of float glass according to claim 7, is characterized in that: described angle [alpha] is 15 °-30 °.
10. the manufacturing installation of float glass according to claim 7, is characterized in that: described manufacturing installation is applied to drawing amount at the ultra-thin glass float line of 20～100 ton per days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309085.1A CN104016572A (en) | 2014-06-30 | 2014-06-30 | Manufacturing method and device of float glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309085.1A CN104016572A (en) | 2014-06-30 | 2014-06-30 | Manufacturing method and device of float glass |
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|---|---|
| CN104016572A true CN104016572A (en) | 2014-09-03 |
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ID=51433632
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410309085.1A Pending CN104016572A (en) | 2014-06-30 | 2014-06-30 | Manufacturing method and device of float glass |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000791A (en) * | 2015-08-06 | 2015-10-28 | 蚌埠玻璃工业设计研究院 | Float glass flow passage flashboard sealing device |
| CN105060681A (en) * | 2015-08-06 | 2015-11-18 | 蚌埠玻璃工业设计研究院 | Flow liquid channel flashboard sealing device |
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| CN1600713A (en) * | 2003-09-28 | 2005-03-30 | 洛阳玻璃股份有限公司 | Method of sealing in small spatial obstructs at entrance end of tin pot in product line float glass, and seal structure |
| JP2005527450A (en) * | 2002-03-06 | 2005-09-15 | ショット アクチエンゲゼルシャフト | A device for metering glass melts in the supply passage of a float facility for producing suspended glass ribbons |
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| CN102329064A (en) * | 2011-10-24 | 2012-01-25 | 成都光明光电股份有限公司 | Glass flow control device and method for prolonging service life of glass flow control device |
| CN202224405U (en) * | 2011-08-19 | 2012-05-23 | 武汉长利玻璃(汉南)有限公司 | Float glass flow channel sucking and sweeping device |
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| TW200304433A (en) * | 2002-03-06 | 2003-10-01 | Schott Glas | Equipment to distribute glass-fusion into a feeding-channel of a float-apparatus for manufacturing a floated glass-band |
| JP2005527450A (en) * | 2002-03-06 | 2005-09-15 | ショット アクチエンゲゼルシャフト | A device for metering glass melts in the supply passage of a float facility for producing suspended glass ribbons |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000791A (en) * | 2015-08-06 | 2015-10-28 | 蚌埠玻璃工业设计研究院 | Float glass flow passage flashboard sealing device |
| CN105060681A (en) * | 2015-08-06 | 2015-11-18 | 蚌埠玻璃工业设计研究院 | Flow liquid channel flashboard sealing device |
| CN105000791B (en) * | 2015-08-06 | 2017-03-29 | 蚌埠玻璃工业设计研究院 | A kind of float-glass flow-fluid road flashboard sealing device |
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Application publication date: 20140903 |