阅读说明：本技术 超薄浮法玻璃生产中直线电机的使用方法 (Application method of linear motor in production of ultra-thin float glass ) 是由 孙炜正 吴惊涛 汤晓旭 孙轶彬 张同海 李红霞 张云贺 于 2020-06-17 设计创作，主要内容包括：本发明属于玻璃生产技术领域,涉及一种超薄浮法玻璃生产中直线电机的使用方法。涉及的一种超薄浮法玻璃生产中直线电机的使用方法为：在锡槽窄段,对称安装一对与玻璃生产拉引量相匹配功率的直线电机；直线电机配置功率的大小与拉引量有关W<Sub>功率=</Sub>1/4~1/5A<Sub>拉引量</Sub>；两台直线电机分别位于玻璃板宽度方向的两侧；直线电机的前端均伸入锡槽,并位于玻璃板的上方；伸入长度L=KA(1+δ/2)；直线电机下端面与玻璃板之间的高度h为锡槽胸墙的高度1/2~1/3；直线电机电流大小与所生产玻璃厚度有关,I<Sub>电机</Sub>=I<Sub>基础电流</Sub>(1+δ/3)。本发明减少了横向锡液温差的方法,降低了漂浮在锡液面上玻璃板的温差,达到了均衡玻璃板横向温差。(The invention belongs to the technical field of glass production, and relates to a use method of a linear motor in production of ultra-thin float glass. The use method of the linear motor in the production of the ultra-thin float glass comprises the following steps: symmetrically installing a pair of linear motors with power matched with the drawing amount in glass production at the narrow section of the tin bath; the magnitude of the linear motor configuration power is related to the pulling amount W Power = 1/4~1/5A Amount of pull (ii) a The two linear motors are respectively positioned on two sides of the glass plate in the width direction; the front ends of the linear motors extend into the tin bath and are positioned above the glass plate; penetration length L = KA (1 +/2); the height h between the lower end face of the linear motor and the glass plate is 1/2-1/3 of the height of the tin bath breast wall; the magnitude of the current of the linear motor is related to the thickness of the produced glass, I Electric machine =I Base current (1+/3). The method reduces the temperature difference of the transverse tin liquid, reduces the temperature difference of the glass plate floating on the tin liquid surface, and achieves the purpose of balancing the transverse temperature difference of the glass plate.)

1. A use method of a linear motor in ultra-thin float glass production is characterized in that: the using method comprises the following steps: a pair of linear motors with power matched with the glass production pulling amount are symmetrically arranged in the narrow section of the tin bath, namely the interval range of the tin liquid temperature of 620 DEG and 650 DEG; the magnitude of the linear motor configuration power is related to the pulling amount W_{Power =}1/4~1/5A_{Amount of pull}(ii) a The two linear motors are respectively positioned on two sides of the glass plate in the width direction; the front ends of the linear motors extend into the tin bath and are positioned above the glass plate; the length L of the linear motor extending into the tin bath is gradually reduced along with the thinning of the glass thickness, and the length L of the linear motor extending into the tin bath is increased along with the change of the drawing amount in the glass production; an extension length L = KA (1 +/2), wherein; k is 3-4, A is the drawing amount, is the thickness of the glass, and the unit is millimeter; the height h between the lower end face of the linear motor and the glass plate is determined according to the height of the tin bath breast wall, generally the height of the tin bath breast wall is 1/2-1/3, and the h of the glass with different drawing quantities and different thicknesses is h = 1/2-1/3 h according to the height of the tin bath breast wall_{Tin bath breast wall}(ii) a The magnitude of the current of the linear motor is related to the thickness of the produced glass, I_{Electric machine}=I_{Base current}(1 +/3); in this formula, I_{Base current}95-105, and is the thickness of the glass, and the unit is millimeter.

Technical Field

The invention belongs to the technical field of glass production, and particularly relates to a use method of a linear motor in production of ultra-thin float glass.

Background

In the production process of the ultra-thin float glass, particularly when the thickness of the electronic glass is 1.1 mm-0.55 mm, the thinner the glass is, the larger the thickness difference between the edge part and the middle part along the width direction of the glass plate is, the larger the transverse temperature difference is, and the uneven temperature drop between the edge part and the middle part is caused after the ultra-thin glass plate enters the narrow section of a tin bath, so that the internal stress of the glass plate is uneven, and the glass deformation caused by the permanent stress cannot be completely dissipated after annealing, so that the ultra-thin glass product has the defects of optical deformation, warping, corrugation and the like.

The tin liquid in the high temperature area in the tin bath flows to the tail end of the tin bath, the tin liquid with the cooler tail end flows back to the hot end of the tin bath, when the cold and hot tin flows meet the middle temperature area (the temperature is 750 plus 850 ℃) of the tin bath, the temperature of the tin liquid in the area is uneven, the uneven temperature of the tin liquid causes uneven heating of the glass in the area, the uneven stretching of the glass belt generates stress, and the glass product generates defects of optical deformation, warping, corrugation and the like.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a using method of a linear motor in the production of ultra-thin float glass.

The invention adopts the following technical scheme for achieving the purpose:

a use method of a linear motor in ultra-thin float glass production comprises the following steps: a pair of linear motors with power matched with the glass production pulling amount are symmetrically arranged in the narrow section of the tin bath, namely the interval range of the tin liquid temperature of 620 DEG and 650 DEG; the magnitude of the linear motor configuration power is related to the pulling amount W _{Power =}1/4~1/5A_{Amount of pull}(ii) a The two linear motors are respectively positioned on two sides of the glass plate in the width direction; the front ends of the linear motors extend into the tin bath and are positioned above the glass plate; the length of the linear motor extending into the tin bath is LThe glass gradually becomes smaller along with the thinning of the glass thickness, and the drawing quantity changes along with the height of the glass production, and the drawing quantity is high and the extending length is long; an extension length L = KA (1 +/2), wherein; k is 3-4, A is the drawing amount, is the thickness of the glass, and the unit is millimeter; the height h between the lower end face of the linear motor and the glass plate is determined according to the height of the tin bath breast wall, generally the height of the tin bath breast wall is 1/2-1/3, and the h of the glass with different drawing quantities and different thicknesses is h = 1/2-1/3 h according to the height of the tin bath breast wall_{Tin bath breast wall}(ii) a The magnitude of the current of the linear motor is related to the thickness of the produced glass, I_{Electric machine}=I_{Base current}(1 +/3); in this formula, I_{Base current}Is 95 to 105 mm, is the thickness of the glass, and has unit of millimeter.

The invention provides a method for using a linear motor in ultra-thin float glass production, which is characterized in that a pair of linear motors capable of adjusting the current and the extension length are symmetrically used above the edge part of a narrow section of a glass plate of a tin bath, the linear motors are unidirectional linear acting force, and the extension length of the linear motors on the surface of the glass plate is matched to adjust the flow of molten tin at the center and the edge part of the tin bath, so that the high-temperature molten tin at the center of the tin bath flows to a low-temperature area at the edge part, and the temperature difference of the glass plate floating on the molten tin surface is reduced by reducing the temperature difference of the transverse molten tin, thereby balancing the transverse temperature difference of the glass plate.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the device comprises a linear motor, 2, a glass plate, 3, molten tin and 4, and a tin bath body.

Detailed Description

The invention will be described with reference to the accompanying drawings and specific examples of the method of use of a linear motor in the production of glass having a thickness of 1.1mm (draw a =120 ton/day):

as shown in FIG. 1, a pair of W symmetrically penetrates into the narrow section 620 and 650 DEG tin liquid temperature zone section of the tin bath _{Power =}1/4~1/5A_{Amount of pull}I.e. a 24-30 KW linear motor 1.

2. Calculating the length L of the linear motor extending into the glass plate according to the set width of the 1.1mm plate and the width size of the tin bath_{Electric machine}，L_{Electric machine}And the value of = KA (1 +/2) is controlled to be between 600 and 700 mm.

3. The height h = 1/2-1/3 h between the lower bottom surface of the linear motor and the glass plate 2 is adjusted according to the height of the tin bath breast wall_{Tin bath breast wall}And adjusting to 40-45 mm.

4. After the extension length L and the height H of the linear motor 1 are adjusted in place, the linear motor is fixed and sealed, and a leakage opening and fire penetration cannot occur.

5. Adjusting the current basis I of the linear motor 1_{Electric machine}=I_{Base current}(1 +/3); control is between 140A-130A

6. And detecting the warping data of the glass plate, and if the data exceeds the standard, adjusting the current by 2-3A each time until the detected data reaches the standard, wherein the time interval for adjusting each time is controlled between 20-30 minutes.