CN102485675B - Cold quenching process of plate glass tempering - Google Patents
Cold quenching process of plate glass tempering Download PDFInfo
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- CN102485675B CN102485675B CN 201010568001 CN201010568001A CN102485675B CN 102485675 B CN102485675 B CN 102485675B CN 201010568001 CN201010568001 CN 201010568001 CN 201010568001 A CN201010568001 A CN 201010568001A CN 102485675 B CN102485675 B CN 102485675B
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- 238000010791 quenching Methods 0.000 title claims abstract description 88
- 230000000171 quenching effect Effects 0.000 title claims abstract description 88
- 238000005496 tempering Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000005357 flat glass Substances 0.000 title claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 93
- 230000010355 oscillation Effects 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000007664 blowing Methods 0.000 claims description 12
- 230000002045 lasting effect Effects 0.000 claims description 6
- 239000005341 toughened glass Substances 0.000 abstract description 15
- 238000009825 accumulation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000005816 glass manufacturing process Methods 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000003672 processing method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229940028231 symax Drugs 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention discloses a cold quenching process of plate glass tempering, comprising the following steps that: when the plate glass which is heated to the tempering temperature is about to be discharged, an upper cold quenching grid and a lower cold quenching grid start to continuously blow to form a wind field; under the transmission of a roller way, and the glass is transmitted out from a hot furnace to enter the wind field formed by the upper cold quenching grid and the lower cold quenching grid. According to the invention, the range of the continuous reciprocating oscillation of the glass along with the direction of travel is random and not less than the minimum set value, and the range of the continuous opposite reciprocating oscillation of the upper cold quenching grid and the lower cold quenching grid along with the direction which is perpendicular to the direction of travel is random and not less than the minimum set value; the ranges of the two oscillations are set randomly, the oscillation reciprocating point positions of the glass relative to the upper cold quenching grid and the lower cold quenching grid in the two directions are random, and the position of a wind spot formed on the glass is random; thus the wind spots formed by the glass reciprocating oscillation at every time are dispersed in different reciprocating points without the effects of repeated accumulation and continuous reinforcement, and the produced tempered glass has no wind spot basically.
Description
Technical field
The present invention relates to a kind of cold quenching technique of flat glass toughening, for the cold quenching stage of the dull and stereotyped tempering Improving Glass Manufacturing Processes of horizontal roller formula.
Background technology
The basic production flow process of horizontal roller formula flat glass toughening is: loading → heating → cold quenching → unloading.Be specially:
The loading stage: former sheet glass is transmitted in process furnace.
Heating phase: be heated to the tempering temperature in glass heating furnace.
The cold quenching stage: to the blowing of the glass after heating cold quenching.
Unloading phase: the glass that completes tempering is sent.
At cold quenching, in the stage, the freezing air blown out the circular hole battle array by the regular arrangement from upper and lower cold quenching air grid is ejected into respectively the upper and lower surface of sheet glass and completes the cold quenching to sheet glass.The processing method in the cold quenching stage generally adopted at present, has two kinds of modes: simple pendulum type cold quenching method and compound pendulum type cold quenching method.
Simple pendulum type cold quenching method because of the single pendulum cold quenching air grid used because simple in structure, equipment cost is cheap, easily safeguard and be widely used.This kind of cold quenching method technique is: be heated to the glass of tempering temperature when being about to come out of the stove, upper and lower cold quenching air grid starts to continue blowing, and forms wind field.Glass enters in the wind field that upper and lower cold quenching air grid forms from sending in hot stove, start in wind field with two fixedly terminal (being that the amplitude of oscillation is certain) with certain speed along the lasting reciprocating swing of glass direct of travel.Until, after glass completes tempering, glass stops swinging, upper and lower cold quenching air grid stops blowing.
Compound pendulum type cold quenching method, because can solve relatively preferably the wind spot problem of toughened glass, also is employed in practice.This kind of cold quenching method technique is to be compounded with the swing of upper and lower cold quenching air grid on the basis of simple pendulum type cold quenching method technique, is heated to the glass of tempering temperature when being about to come out of the stove that is:, and upper and lower cold quenching air grid starts to continue blowing, and forms wind field.Glass enters in the wind field that upper and lower cold quenching air grid forms from sending in hot stove, start in wind field with two fixedly terminal (being that the amplitude of oscillation is certain) with certain speed along the lasting reciprocating swing of glass direct of travel.Simultaneously, upper and lower cold quenching air grid, along perpendicular to the glass direct of travel, continues reciprocally swinging in opposite directions with certain amplitude of oscillation, certain speed.Until, after glass completes tempering, glass stops swinging, upper and lower cold quenching air grid stops swinging and stops blowing.
In the cold quenching stage, glass completes cold quenching in wind field.Wind field is that the freezing air blown out by the circular hole battle array from the regular arrangement of upper and lower cold quenching air grid is set up, and inevitably will form the point-like wind spot that corresponding relation is arranged with the blowhole of upper and lower cold quenching air grid on the upper and lower surface of glass surface.That is, the toughened glass surface forms the blowhole formation distribution that the basic reason of point-like wind spot is the cold quenching air grid.Because glass continues reciprocating swing along the glass direct of travel in wind field, thus when glass when returning the benefit commutation (being amplitude of oscillation maximum), upper and lower cold quenching air grid is in stationary state momently, now the wind spot of formation is the most obvious.
To analyzing known in the processing method in cold quenching stage in the dull and stereotyped tempering Improving Glass Manufacturing Processes of the current horizontal roller formula generally adopted:
1. adopt simple pendulum type cold quenching method, glass continues reciprocating swing along the glass direct of travel in wind field.Because the amplitude of oscillation of glass reciprocating swing is certain, glass is also fixed with respect to the position of upper and lower tuyere when returning the benefit at two, in the position of the wind spot of formation on glass, also fixes.So the wind spot that each glass reciprocating swing forms also just in time repeats accumulation, constantly is reinforced.The toughened glass product has obvious wind spot.
2. adopt compound pendulum type cold quenching method, although be to be compounded with upper and lower cold quenching air grid along the reciprocally swinging perpendicular to the glass direct of travel, reduced glassy phase for the of short duration static probability of upper and lower cold quenching air grid, the wind spot that alleviates toughened glass is had certain effect, but because two kinds of amplitudes of oscillation that swing form are all fixed, so the wind spot of two kinds of each glass reciprocating swing formation of swing form also just in time repeats accumulation separately, constantly is reinforced.The toughened glass product also has obvious wind spot.
In life and production practice, why select the toughened glass product, be because of the glittering and translucent characteristic conforms people of glass self esthetic sentiment.But realistic situation is toughened glass, obvious wind spot is arranged, have to again accept this helpless fact.Along with improving constantly that material and culture life are pursued, more and more discontented to this present situation, limited the widespread use of toughened glass product.Solve the obvious wind spot of toughened glass product problem, seem important, urgent.
Summary of the invention
Purpose of the present invention is exactly for the obvious wind spot of current toughened glass product problem, has proposed in the dull and stereotyped tempering Improving Glass Manufacturing Processes of a kind of horizontal roller formula the processing method in the cold quenching stage.Adopt this processing method can greatly alleviate the wind spot of dull and stereotyped toughened glass.
The objective of the invention is to realize by following technical proposals: a kind of cold quenching technique of flat glass toughening, be heated to the sheet glass of tempering temperature when being about to come out of the stove, upper and lower cold quenching air grid starts to continue blowing, forms wind field, under the transmission of roller-way, glass is sent and is entered in hot stove, in the wind field that lower cold quenching air grid forms, glass continues reciprocating swing along the glass direct of travel in wind field, simultaneously, on, lower cold quenching air grid is along perpendicular to the glass direct of travel, continuing reciprocally swinging in opposite directions, until after glass completes tempering, glass stops swinging, on, lower cold quenching air grid stops swinging and stops blowing, it is characterized in that: glass follows into the amplitude of oscillation of the lasting reciprocating swing of direction and is random and is not less than minimum set(ting)value, on, lower cold quenching air grid is also random and is not less than minimum set(ting)value along perpendicular to the glass direct of travel, continuing the amplitude of oscillation of reciprocally swinging in opposite directions.
Glass follows into the speed of the lasting reciprocating swing of direction and reduces gradually, and upper and lower cold quenching air grid also reduces gradually along perpendicular to the glass direct of travel, continuing the speed of reciprocally swinging in opposite directions.
The amplitude of oscillation of two kinds of above-mentioned swings all arranges minimum set(ting)value, is that the OK range of setting is in order to reduce glassy phase for the of short duration static frequency of upper and lower cold quenching air grid: the minimum set(ting)value that glass follows the amplitude of oscillation swung into direction is greater than the maximum amplitude of oscillation
doubly and be less than the maximum amplitude of oscillation
the minimum set(ting)value of the amplitude of oscillation that doubly, upper and lower cold quenching air grid edge swings perpendicular to direct of travel is greater than the maximum amplitude of oscillation
doubly and be less than the maximum amplitude of oscillation
doubly.The amplitude of oscillation of two kinds of swings is random settings, and the both direction upper glass is also random with respect to the swing of upper and lower cold quenching air grid toward the position that returns the benefit, and now the position at the wind spot of formation on glass is also random.So the wind spot that each glass reciprocating swing forms also is dispersed in different past returning the benefit, the effect of do not repeat accumulation, constantly strengthening.
When the sheet glass that is heated to the tempering temperature has just entered in the wind field that upper and lower cold quenching air grid forms, glass is also in soft state, in order to keep the planeness of sheet glass, must be on its direct of travel the two-forty reciprocally swinging, otherwise can be on roller-way collapse-deformation.Along with the prolongation of the glass cold quenching time in wind field after heating, glass is hardening gradually, can keep the planeness of self gradually, and the flutter rate be reduced in gradually on its direct of travel becomes possibility.Also, along with the prolongation of the glass cold quenching time in wind field after heating, glass reduces at two kinds of susceptibilitys that form the wind spot toward returning the benefit that relatively swing.Changing down has reduced the number of times that swings round commutation pause further gradually, has reduced the probability that forms the wind spot.
Adopt the inventive method to carry out the production of dull and stereotyped tempering glassy product, the quality parameter about the wind spot that can reach is: dull and stereotyped tempering glassy product stacks and is not more than 25 millimeters, along with glass surface, being the direction that is not less than 15 ° of angles, detect by an unaided eye, the wind spot is invisible.
The toughened glass product that adopts the inventive method to produce, if do not detect by an unaided eye, but observe by instruments such as polarizers, and the wind spot is also visible.The contriver to illustrate a bit, the toughened glass product of producing by the method for blowing cold quenching, it is absolute forming wind spot on its surface, it is relative there is no the wind spot.Because naked the looking of naked eyes is the normalities of people in life and production practice, the product that can meet above quality parameter in industry is called the dull and stereotyped toughened glass of calm spot.
The accompanying drawing explanation
Fig. 1 is the processing method schematic diagram adopted in dull and stereotyped tempering Improving Glass Manufacturing Processes of the present invention in the cold quenching stage;
Fig. 2 adopts the amplitude of fluctuation that swings along the glass direct of travel at cold quenching stage glass in dull and stereotyped tempering Improving Glass Manufacturing Processes of the present invention and the rational curve schematic diagram of time.
Fig. 3 adopts in dull and stereotyped tempering Improving Glass Manufacturing Processes of the present invention at upper and lower cold quenching air grid of cold quenching stage along the amplitude of fluctuation swung perpendicular to the glass direct of travel and the rational curve schematic diagram of time.
In figure, 1-glass; The 2-roller-way; The upper and lower cold quenching air grid of 3-; Arrow X means the direction that glass is advanced; Arrow Y means the direction of advancing perpendicular to glass.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated for an application example.
Referring to Fig. 1, illustrate the technological process adopted in dull and stereotyped tempering Improving Glass Manufacturing Processes of the present invention in the cold quenching stage.In the cold quenching stage, be heated to the sheet glass 1 of tempering temperature when being about to come out of the stove, the many blowhole 4 on upper and lower cold quenching air grid 3 start to continue blowing, form wind field.Under the transmission of roller-way 2, glass 1 is sent in the wind field that enters into upper and lower cold quenching air grid 3 formation in hot stove.Glass 1 is along the glass direct of travel in wind field, i.e. directions X, continue reciprocating swing, and the amplitude of oscillation is random and is not less than minimum set(ting)value, and speed reduces gradually; Simultaneously, upper and lower cold quenching air grid 3 is along perpendicular to glass 1 direct of travel, and Y-direction, continue reciprocally swinging in opposite directions, and the amplitude of oscillation is random and is not less than minimum set(ting)value, and speed reduces gradually.Until, after glass 1 completes tempering, glass 1 stops swinging, upper and lower cold quenching air grid 3 stops swinging and stops blowing.
Referring to Fig. 2, illustrate with the amplitude of fluctuation swung along the glass direct of travel at cold quenching stage glass in dull and stereotyped tempering Improving Glass Manufacturing Processes of the present invention and the rational curve schematic diagram of time.In figure, transverse axis means time T (when T=0, glass 1 enters in cold quenching air grid wind field).The longitudinal axis means that glass 1 follows the amplitude of oscillation Sx swung into direction, and Sxmin means that glass follows the minimum set(ting)value of the amplitude of oscillation swung into direction, and Sxmax means that glass 1 follows the amplitude of oscillation maximum value (being that wind field is along the border on the glass direct of travel) swung into direction.Known in figure, it is random that glass 1 follows the amplitude of oscillation Sx swung into direction between minimum set(ting)value Sxmin and amplitude of oscillation maximum value Sxmax, and speed also reduces gradually.Wherein
Referring to Fig. 3, illustrate and adopt in dull and stereotyped tempering Improving Glass Manufacturing Processes of the present invention at upper and lower cold quenching air grid of cold quenching stage along the amplitude of fluctuation swung perpendicular to the glass direct of travel and the rational curve schematic diagram of time.In figure, transverse axis means time T (when T=0, glass 1 enters in cold quenching air grid wind field).The longitudinal axis means that upper and lower tuyere is along the amplitude of oscillation Sy swung perpendicular to the glass direct of travel, Symin means the minimum set(ting)value of the amplitude of oscillation that the glass edge swings perpendicular to the glass direct of travel, and Symax means that glass is along the amplitude of oscillation maximum value swung perpendicular to direct of travel (being that the wind field edge is perpendicular to the border on the glass direct of travel).Known in figure.Upper and lower tuyere is random along the amplitude of oscillation Sy swung perpendicular to the glass direct of travel between minimum set(ting)value Symin and amplitude of oscillation maximum value Symax, and speed also reduces gradually.Wherein
Implement the present invention and can adopt existing installation (roller-way 2 and upper and lower cold quenching air grid 3 etc.), just sequence of control improves slightly, changes glass 1 and the former constant amplitude swing of upper and lower cold quenching air grid 3 into swing shown in Fig. 2 and Fig. 3.
The foregoing is only preferred embodiment of the present invention, is only illustrative for the purpose of the present invention, and nonrestrictive.The professional and technical personnel, modification or the equivalence in the feature category that it limits in the claims in the present invention, it carried out, all should be encompassed in institute of the present invention claim.
Claims (1)
1. the cold quenching technique of a flat glass toughening, be heated to the sheet glass of tempering temperature when being about to come out of the stove, and upper and lower cold quenching air grid starts to continue blowing, forms wind field, under the transmission of roller-way, glass is sent and is entered in hot stove, in the wind field that lower cold quenching air grid forms, glass continues reciprocating swing along the glass direct of travel in wind field, simultaneously, on, lower cold quenching air grid is along perpendicular to the glass direct of travel, continuing reciprocally swinging in opposite directions, until after glass completes tempering, glass stops swinging, on, lower cold quenching air grid stops swinging and stops blowing, it is characterized in that: glass follows into the amplitude of oscillation of the lasting reciprocating swing of direction and is random and is not less than minimum set(ting)value, on, lower cold quenching air grid is also random and is not less than minimum set(ting)value along perpendicular to the glass direct of travel, continuing the amplitude of oscillation of reciprocally swinging in opposite directions, glass follows into the speed of the lasting reciprocating swing of direction and reduces gradually, and upper and lower cold quenching air grid also reduces gradually along perpendicular to the glass direct of travel, continuing the speed of reciprocally swinging in opposite directions,
The minimum set(ting)value that described glass follows the amplitude of oscillation swung into direction is greater than the maximum amplitude of oscillation
doubly, and be less than the maximum amplitude of oscillation
doubly;
The minimum set(ting)value of the amplitude of oscillation that described upper and lower cold quenching air grid edge swings perpendicular to direct of travel is greater than the maximum amplitude of oscillation
doubly, and be less than the maximum amplitude of oscillation
doubly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010568001 CN102485675B (en) | 2010-12-01 | 2010-12-01 | Cold quenching process of plate glass tempering |
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| CN 201010568001 CN102485675B (en) | 2010-12-01 | 2010-12-01 | Cold quenching process of plate glass tempering |
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| CN102485675A CN102485675A (en) | 2012-06-06 |
| CN102485675B true CN102485675B (en) | 2013-12-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103601359A (en) * | 2013-08-14 | 2014-02-26 | 浙江鼎玻自动化设备有限公司 | Method for eliminating wind spots in glass toughening phase |
| CN103833201B (en) * | 2014-01-15 | 2016-08-17 | 洛阳兰迪玻璃机器股份有限公司 | A kind of method eliminating glass wind speckle and air grid swing mechanism |
| CN114644450A (en) * | 2020-12-21 | 2022-06-21 | 洛阳兰迪玻璃机器股份有限公司 | Air grid longitudinal swinging method |
| CN114644451A (en) * | 2020-12-21 | 2022-06-21 | 洛阳兰迪玻璃机器股份有限公司 | Air grid transverse swinging method |
| CN112624587A (en) * | 2021-01-13 | 2021-04-09 | 洛阳北方玻璃技术股份有限公司 | Horizontal roller way type glass continuous toughening method |
| CN115974388B (en) * | 2023-01-17 | 2025-03-14 | 洛阳北方玻璃技术股份有限公司 | Device and method for eliminating wind spots on glass surface |
| CN115893821B (en) * | 2023-02-16 | 2025-01-10 | 天长市中凯钢化玻璃有限公司 | A tempering furnace for tempered glass production |
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| GB927848A (en) * | 1960-04-20 | 1963-06-06 | Triplex Safety Glass Co | Improvements in and relating to methods of producing toughened glass |
| CN2675664Y (en) * | 2004-01-06 | 2005-02-02 | 信义汽车玻璃(深圳)有限公司 | Air grates motion mechanism for glass reinforcing furnace |
| CN201338987Y (en) * | 2009-02-13 | 2009-11-04 | 北京北玻安全玻璃有限公司 | Horizontal swing device of horizontal roller track style glass toughening windshield mold |
| CN101746946A (en) * | 2009-12-21 | 2010-06-23 | 富阳豪信工艺玻璃有限公司 | Secondary homing toughening process for glass toughening furnace |
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