Strengthening treatment method for glass tube in on-line production process

A production process and strengthening treatment technology, applied in the field of glass material manufacturing, can solve the problems of not conforming to the basic concept, increasing the quality of devices or devices, consuming glass raw materials, etc.

Active Publication Date: 2011-10-19
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The safety requirements of mechanical strength are also required for the above-mentioned types of glass tubes, which meet the requirements of pressure resistance, flexural resistance, tensile strength, and impact resistance during use. For the improvement of the mechanical strength of glass tube products, almost no physical toughening is used. method and chemical tempering method, the vast majority of glass manufacturing e

Method used

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  • Strengthening treatment method for glass tube in on-line production process
  • Strengthening treatment method for glass tube in on-line production process
  • Strengthening treatment method for glass tube in on-line production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Taking the medical glass tube produced by Dana method as an example, the glass material is low borosilicate glass, the size specification is 15.8mm in outer diameter, and the wall thickness is 1.0mm. When the temperature is 600°C, the strengthening treatment of glass tubes in the online production process is carried out, using an ultra-micro atomizer, the atomized particles are less than 5 microns, the strengthening treatment medium is vinyltriethoxysilane aqueous solution, the solid content is 15wt%, and the spraying dosage is 15L / hour, the surface stress value and impact damage energy of the glass tube after strengthening treatment, the comparative example is the glass tube without strengthening treatment.

[0014] The width of the compressive stress area of ​​the glass tube and the value of the compressive stress are measured by using an orthogonal polarizing microscope. A full-wave plate (565nm optical path difference) is inserted in the optical path of the microsco...

Embodiment 2

[0019] Taking the blank tube for solar heat collector produced by the maintenance method as an example, the glass material is high borosilicate glass, the size specification is 58mm in outer diameter, and the wall thickness is 1.8mm. At ℃ and 600℃, the strengthening treatment of glass tubes in the online production process is carried out, using an ultra-micro atomizer, the atomized particles are less than 5 microns, the strengthening treatment medium is diethyldichlorosilane aqueous solution, the solid content is 25wt%, and the amount of spraying 20L / hour, the surface stress value and impact damage energy of the glass tube after strengthening treatment, the comparative example is the glass tube without strengthening treatment.

[0020] The measurement and characterization method is the same as in Example 1, and the measured values ​​are shown in Table 2.

[0021] Table 2 Comparison table of on-line strengthening treatment of blank tubes for high borosilicate solar collector tu...

Embodiment 3

[0024] Taking the blank tube for solar heat collector produced by the maintenance method as an example, the glass material is high borosilicate glass, the size specification is 58mm in outer diameter, and the wall thickness is 1.8mm. ℃, 590 ℃, the strengthening treatment of glass tubes in the online production process, using ultra-micro atomizer, the atomized particles are less than 5 microns, the strengthening treatment medium is pure water, the spraying amount is 20L / hour, the surface stress of the glass tube after strengthening treatment Value and impact breakage energy, the comparative example is a glass tube that has not been strengthened.

[0025] The measurement and characterization method is the same as in Example 1, and the measured values ​​are shown in Table 3.

[0026] Table 3 Comparison table of on-line strengthening treatment of blank tubes for high borosilicate solar collector tubes (pure water medium)

[0027]

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Abstract

The invention relates to a strengthening treatment method for a glass tube in the on-line production process and belongs to the field of manufacturing of glass materials. In the method, when the temperature of the glass tube is below the annealing temperature point and the surface temperature of the glass tube is between 200 and 600 DEG C, a liquid strengthening medium is sprayed on the outer side of the glass tube by an annular ultramicro atomizer, wherein the strengthening medium is pure water, aqueous solution of pure water and vinyltriethoxysilane, aqueous solution of diethyl dichlorosilane or aqueous solution of isobutyl trimethoxysilane; the solid content of the aqueous solution is 15 to 35 weight percent; and the solvent is pure water. The invention aims to provide the strengthening treatment method for the glass tube in the on-line production process. By the method, mechanical strength of the glass tube is improved and the application safety of the glass tube is improved. The strengthening treatment process belongs to an on-line process, so energy is saved to the maximum extent, labor cost is reduced, the production process is simplified, and occupied area is reduced.

Description

technical field [0001] The invention discloses a strengthening treatment method in the on-line production process of glass tubes, which belongs to the field of glass material manufacturing. Background technique [0002] Glass is a typical brittle material. Although its compressive strength and hardness are high, its flexural and tensile strength are not high, and it exhibits extremely brittle characteristics, which limits its application. In order to improve the deficiencies in the flexural and tensile strength of glass, physical tempering and chemical tempering are often used in the glass manufacturing industry for glass strengthening to improve and enhance the mechanical strength. Physical tempering is to make the glass below the softening point temperature, and its optimum glass viscosity range is 10 8 dPa·s~10 9 dPa·s, by instantly applying cold wind to the glass surface, the glass surface will shrink rapidly, forming compressive stress, and enhancing the glass strengt...

Claims

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Application Information

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IPC IPC(8): C03C17/30
Inventor 田英良郭现龙梁新辉孙诗兵朱满康
Owner BEIJING UNIV OF TECH
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