阅读说明：本技术 一种高端仪表玻璃 (High-end instrument glass ) 是由 孙娜丽 吕思稳 朱志兵 王勇 尹静婷 黄光耀 顾颖 杨金玲 杨二波 于 2021-07-14 设计创作，主要内容包括：本发明涉及一种高端仪表玻璃,包括以下重量份数的原料：石英砂200～230份,钾长石40～60份,白云石48～68份,方解石20～40份,纯碱65～85份,碳酸钾2～5份,碳酸锂2～5份,硝酸钠2～5份,氯化钠0.5～2份。本发明的优点：本发明生产的玻璃为超薄玻璃,其厚度为1.3mm,能够用于高端仪表仪器、高端制镜以及控制触摸屏玻璃,它具有较好的化学稳定性、较低的热膨胀系数、较强的硬度、抗冲击强度以及很好的耐候性,能够适应较高的环境温度和防划伤特性,同时该种玻璃的表面光泽度好,厚度小、重量轻使其实用性更为广泛。(The invention relates to high-end instrument glass which comprises the following raw materials in parts by weight: 200-230 parts of quartz sand, 40-60 parts of potassium feldspar, 48-68 parts of dolomite, 20-40 parts of calcite, 65-85 parts of soda ash, 2-5 parts of potassium carbonate, 2-5 parts of lithium carbonate, 2-5 parts of sodium nitrate and 0.5-2 parts of sodium chloride. The invention has the advantages that: the glass produced by the invention is ultrathin, the thickness of the glass is 1.3mm, the glass can be used for high-end instruments and instruments, high-end mirrors and control touch screen glass, the glass has better chemical stability, lower thermal expansion coefficient, stronger hardness, impact strength and good weather resistance, can adapt to higher environmental temperature and scratch-proof characteristic, and meanwhile, the glass has good surface gloss, small thickness and light weight, so that the glass has wider practicability.)

1. A high-end instrument glass is characterized in that: the composite material comprises the following raw materials in parts by weight: 200-230 parts of quartz sand, 40-60 parts of potassium feldspar, 48-68 parts of dolomite, 20-40 parts of calcite, 65-85 parts of soda ash, 2-5 parts of potassium carbonate, 2-5 parts of lithium carbonate, 2-5 parts of sodium nitrate and 0.5-2 parts of sodium chloride.

2. A high-end instrument glass according to claim 1, characterized in that: the feed comprises the following raw materials in parts by weight: 210-220 parts of quartz sand, 50-55 parts of potassium feldspar, 50-60 parts of dolomite, 25-35 parts of calcite, 70-80 parts of soda ash, 2.5-3.5 parts of potassium carbonate, 2.5-3.5 parts of lithium carbonate, 2.5-3.5 parts of sodium nitrate and 0.5-1.5 parts of sodium chloride.

3. A high-end instrument glass according to claim 1, characterized in that: the feed comprises the following raw materials in parts by weight: 215 parts of quartz sand, 51 parts of potassium feldspar, 55 parts of dolomite, 29 parts of calcite, 76 parts of soda ash, 3 parts of potassium carbonate, 3 parts of lithium carbonate, 3 parts of sodium nitrate and 1 part of sodium chloride.

4. The high-end instrument glass as claimed in any one of claims 1 to 3, wherein the particle size of each component in the raw material is not less than 85% in a range of 20 mesh to 100 mesh.

5. A high end instrument glass according to claim 1, wherein the glass production process comprises the steps of:

step one, preparation of a batch: the raw materials are proportioned according to the weight part, 2-5% of water is added to be uniformly mixed for 5-8 minutes per auxiliary material, and the proportioned batch materials are conveyed to a kiln head storage bin;

step two, melting: the batch is put into a kiln and melted at the temperature of 1550-1580 ℃, and a clarifying agent is added at the temperature of 1300-1450 ℃ for clarification, and then the temperature is controlled to 1172-1190 ℃;

step three, forming: forming the glass by a full-automatic edge roller within the temperature range of 1000-850 ℃, controlling the drawing amount to be 220-230 t/d, and cooling the temperature of the glass plate out of a tin bath to 600 +/-10 ℃ in a cooling area by a cooler;

and step four, annealing, wherein the annealing upper limit temperature is 525 +/-5 ℃, the annealing lower limit temperature is 440 +/-5 ℃, and the temperature of the zone C of the kiln is 310 +/-5 ℃.

6. The high-end instrument glass of claim 5, wherein: the water in the step one is a solution with the mixed concentration of sodium chloride and water of 18-25%, and the water is mixed and added according to the amount of 2-4 kg of each auxiliary material.

7. The high-end instrument glass of claim 5, wherein: the clarifying agent adopts sodium nitrate, sodium chloride and lithium carbonate.

8. The high-end instrument glass of claim 5, wherein: in the third step, in the glass forming process, a high-temperature thinning technology is applied to forcibly thin the high-viscosity glass, the temperature of the middle glass belt is increased by high-temperature thinning, the middle part of the glass belt is 40-50 ℃ higher than the two side parts, and the longitudinal cooling of the tin bath is realized by arranging the check ridges.

9. The high-end instrument glass of claim 8, wherein: and the cooling area in the third step adopts three-dimensional cooling, and the three-dimensional cooling adopts the combination of a space cooler, a molten tin cooler and a tin bath linear motor type stirring device.

10. The high-end instrument glass of claim 5, wherein: and annealing in the fourth step is carried out in the annealing kiln, a lower wind-shielding curtain is arranged at the outlet of the zone C of the annealing kiln, and wind-shielding partition walls are arranged on two sides of the annealing kiln.

Technical Field

The invention relates to the technical field of glass production, in particular to high-end instrument glass.

Background

The existing instrument glass is generally ordinary soda-lime-silica float glass, the thickness is basically about 2mm, and the application field is generally in a room temperature environment. The ordinary soda-lime-silica float glass can not be applied to the existing high-end instruments, because the thickness of the glass used on the high-end instruments is small, the thickness of the existing float glass is large, the flatness, the deflection and the thickness difference of the existing float glass can not meet the requirements, and the thermal expansion coefficient, the strong hardness, the impact strength and the weather resistance of the glass can not meet the requirements, so that the glass with the small thickness and the good performance is required to be used for the high-end instruments.

Disclosure of Invention

In order to solve the technical problem, the invention provides high-end instrument glass.

In order to achieve the purpose, the invention provides the following technical scheme:

a high-end instrument glass is characterized in that: the composite material comprises the following raw materials in parts by weight: 200-230 parts of quartz sand, 40-60 parts of potassium feldspar, 48-68 parts of dolomite, 20-40 parts of calcite, 65-85 parts of soda ash, 2-5 parts of potassium carbonate, 2-5 parts of lithium carbonate, 2-5 parts of sodium nitrate and 0.5-2 parts of sodium chloride.

On the basis of the above scheme, the following technical scheme can be adopted:

the feed comprises the following raw materials in parts by weight: 210-220 parts of quartz sand, 50-55 parts of potassium feldspar, 50-60 parts of dolomite, 25-35 parts of calcite, 70-80 parts of soda ash, 2.5-3.5 parts of potassium carbonate, 2.5-3.5 parts of lithium carbonate, 2.5-3.5 parts of sodium nitrate and 0.5-1.5 parts of sodium chloride.

The feed comprises the following raw materials in parts by weight: 215 parts of quartz sand, 51 parts of potassium feldspar, 55 parts of dolomite, 29 parts of calcite, 76 parts of soda ash, 3 parts of potassium carbonate, 3 parts of lithium carbonate, 3 parts of sodium nitrate and 1 part of sodium chloride.

The particle size of each component in the raw material is more than or equal to 85 percent between 20 meshes and 100 meshes.

The production process of the glass comprises the following steps:

step one, preparation of a batch: the raw materials are proportioned according to the weight part, 2-5% of water is added to be uniformly mixed for 5-8 minutes per auxiliary material, and the proportioned batch materials are conveyed to a kiln head storage bin;

step two, melting: the batch is put into a kiln and melted at the temperature of 1550-1580 ℃, and a clarifying agent is added at the temperature of 1300-1450 ℃ for clarification, and then the temperature is controlled to 1172-1190 ℃;

step three, forming: forming the glass by a full-automatic edge roller within the temperature range of 1000-850 ℃, controlling the drawing amount to be 220-230 t/d, and cooling the temperature of the glass plate out of a tin bath to 600 +/-10 ℃ in a cooling area by a cooler;

and step four, annealing, wherein the annealing upper limit temperature is 525 +/-5 ℃, the annealing lower limit temperature is 440 +/-5 ℃, and the temperature of the zone C of the kiln is 310 +/-5 ℃.

The water in the step one is a solution with the mixed concentration of sodium chloride and water of 18-25%, and the water is mixed and added according to the amount of 2-4 kg of each auxiliary material.

The clarifying agent adopts sodium nitrate, sodium chloride and lithium carbonate.

In the third step, in the glass forming process, a high-temperature thinning technology is applied to forcibly thin the high-viscosity glass, the temperature of the middle glass belt is increased by high-temperature thinning, the middle part of the glass belt is 40-50 ℃ higher than the two side parts, and the longitudinal cooling of the tin bath is realized by arranging the check ridges.

And the cooling area in the third step adopts three-dimensional cooling, and the three-dimensional cooling adopts the combination of a space cooler, a molten tin cooler and a tin bath linear motor type stirring device.

And annealing in the fourth step is carried out in the annealing kiln, a lower wind-shielding curtain is arranged at the outlet of the zone C of the annealing kiln, and wind-shielding partition walls are arranged on two sides of the annealing kiln.

The invention has the beneficial effects that: the glass produced by the invention is ultrathin, solves the problem that high-end instrument glass with the thickness of 1.3mm is difficult to melt, reduces the energy consumption, has the flatness, the deflection of less than 300 mu m and the thickness difference of 0.5mm, has better chemical stability, lower thermal expansion coefficient, stronger hardness, impact strength and good weather resistance, can adapt to higher environmental temperature and scratch-proof characteristic, has good surface gloss, has wide application field, can be popularized and used on high-end instruments, high-end mirrors and automobile instruments, and has small thickness and light weight, so that the practicability of the glass is wider.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting.

The embodiment I of the invention relates to high-end instrument glass which comprises the following raw materials in parts by weight: 215 parts of quartz sand, 51 parts of potassium feldspar, 55 parts of dolomite, 29 parts of calcite, 76 parts of soda ash, 3 parts of potassium carbonate, 3 parts of lithium carbonate, 3 parts of sodium nitrate and 1 part of sodium chloride. The grain diameter of more than 85 percent of the components in the raw materials is between 20 meshes and 100 meshes, and the grain diameter of each component in the scheme is preferably 60 meshes.

The production process of the glass comprises the following steps:

step one, preparation of a batch: the raw materials are proportioned according to the weight parts, 3 percent of water is added and uniformly mixed, the water is a solution with the mixed concentration of sodium chloride and water being 20 percent, 3 kilograms of the water are mixed and added in each pair, the mixing time is 6.5 minutes per auxiliary material, and the proportioned auxiliary material is conveyed to a kiln head storage bin.

Step two, melting: the batch is put into a kiln from a kiln head bin, melted at 1565 ℃, and then clarified by adding a clarifying agent at 1400 ℃, lithium carbonate, sodium chloride and sodium nitrate in the scheme are taken as clarifying agents to replace mirabilite in the prior art, the emission of sulfides is greatly reduced on flue gas, and the temperature is reduced to 1180 ℃ after clarification.

Step three, forming: when the temperature is 920 ℃, a full-automatic edge roller applies a high-temperature thinning technology to forcibly thin and mold high-viscosity glass, the high-temperature thinning improves the temperature of a middle glass belt, the middle of the glass belt is 45 ℃ higher than the two sides of the glass belt, and by arranging check ridges in the whole molding process, the control on the whole longitudinal temperature drop is enhanced, and the thickness difference and the warping phenomenon of the glass are reduced. The longitudinal temperature drop control is that a pair of graphite boat type check ridges are arranged at every two edge rollers, one end of each check ridge close to a glass belt is designed into a circular arc shape, so that clamping plates caused by the width of the glass plate are avoided, longitudinal tin liquid convection is weakened, and the purpose of longitudinal slow temperature drop is achieved. The automatic edge roller is the prior art, and the drawing volume of the automatic edge roller in the scheme is 225t/d, and the temperature of the glass plate out of the tin bath is cooled to 600 ℃ in a cooling area through a cooler.

The cooling zone adopts three-dimensional cooling, balances the transverse temperature difference and the upper and lower temperature difference of the glass, and realizes the excellent effects of flatness and deflection of the glass. The three-dimensional cooling technology is that space cooler, molten tin cooler and molten tin bath linear electric motor formula agitating unit combine to use, and wherein space cooler, molten tin cooler and molten tin bath linear electric motor formula are prior art, and space cooler and molten tin cooler device are installed before molten tin bath linear electric motor formula agitating unit, and molten tin bath linear electric motor formula agitating unit and molten tin bath slagging-off machine distance interval are 5 meters. The temperature of the outlet of the tin bath is controlled to be 612 ℃ by the cooperation of the three.

And step four, annealing, namely annealing in an annealing kiln, wherein the annealing upper limit temperature is 525 ℃, the annealing lower limit temperature is 440 ℃, and the temperature of the C area of the kiln is 310 ℃. And a lower wind-shielding curtain is arranged at an outlet of the annealing kiln C area, and wind-shielding partition walls are arranged on two sides of the annealing kiln.

The following components can also be adopted in the raw materials in the second embodiment and the first embodiment in parts by weight: 216 parts of quartz sand, 55 parts of potassium feldspar, 56 parts of dolomite, 30 parts of calcite, 77 parts of soda ash, 3.2 parts of potassium carbonate, 3.2 parts of lithium carbonate, 3.2 parts of sodium nitrate and 1.2 parts of sodium chloride.

The following components can also be adopted in the third embodiment and the first embodiment in parts by weight: 214 parts of quartz sand, 50 parts of potassium feldspar, 54 parts of dolomite, 28 parts of calcite, 75 parts of soda ash, 2.8 parts of potassium carbonate, 2.8 parts of lithium carbonate, 2.8 parts of sodium nitrate and 0.8 part of sodium chloride.

The following components can also be adopted in the third embodiment and the first embodiment in parts by weight: 2108 parts of quartz sand, 54 parts of potassium feldspar, 58 parts of dolomite, 23 parts of calcite, 78 parts of soda ash, 3.4 parts of potassium carbonate, 3.4 parts of lithium carbonate, 3.4 parts of sodium nitrate and 1.4 parts of sodium chloride.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.