High temperature and high pressure resistant alkali-free aluminosilicate glass for high pressure liquidometer

A high-pressure liquid, high-temperature-resistant technology, used in glass forming, glass furnace equipment, glass manufacturing equipment, etc., can solve the problems of low softening point, poor chemical stability, low Young's modulus, etc., to achieve uniform electric field heat distribution, The effect of uniform distribution of electric field lines and smooth melting process

Inactive Publication Date: 2017-06-06
南京神童特种玻璃技术有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an alkali-free aluminosilicate glass for high-pressure liquid level gauges resistant to high temperature and pressure, which reasonably solves the problem that the alkali-aluminosilicate glass in the prior art cannot withstand high temperature and high pressure, has low softening point, and low Young's modulus , Excessive expansion coefficie

Method used

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  • High temperature and high pressure resistant alkali-free aluminosilicate glass for high pressure liquidometer
  • High temperature and high pressure resistant alkali-free aluminosilicate glass for high pressure liquidometer

Examples

Experimental program
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Example Embodiment

[0027] Experimental example

[0028] The oxide composition and mass percentage of the alkali-free aluminosilicate glass of the high-pressure liquid level gauge resistant to high temperature and high pressure are: SiO 2 (55~65)%, Al 2 O 3 (14~25)%、B 2 O 3 (3~8)%, CaO(5~12)%, MgO(4~10)%, BaO(3~8)%, As 2 O 3 (0.2~0.5)%, Sb 2 O 3 (0.2~0.5)%, NaNO 3 (0.1~0.3)%, ZrO 2 (0.2~0.5)%, using the following process flow for experiment and implementation:

[0029] First of all, select the glass raw materials to make them the above-mentioned characteristic glass composition, configure them, mix them evenly, and melt them in a platinum electric melting furnace. The molding adopts the platinum pot bottom leakage method. According to actual needs, various specifications of glass plates and Or it can be cast into various round blanks, which are processed by precision annealing, grinding, polishing and tempering. Results obtained from the above process flow experiment:

[0030] Table 1. Chemical composi...

Example Embodiment

[0043] Example 1

[0044] The tempering temperature is preferably 900℃, and the fan flow is preferably 15000m 3 / h.

[0045] First, select the main raw material requirements for glass composition according to Experimental Example 1 in Table 1. Use quartz sand (150μm oversize is less than 1%, 45μm undersize is 30% or less, Fe 2 O 3 The content is less than 0.01wt.%), calcined alumina (average particle size 50μm), boric acid (400μm oversize is 10% or less, 63μm undersize is 10% or less, high purity calcium carbonate (average particle size 250μm), high Purity magnesium oxide (average particle size 250μm), barium carbonate (average particle size 50μm). Fe in glass raw material 2 O 3 Strictly control, the requirement is less than 100PPm, the finished glass Fe 2 O 3 Less than 150PPm. The clarifying agent uses a variety of clarifying agent raw materials to make the ingredients meet the glass chemical composition in Table 1, and then use a high thermal efficiency all-electric furnace to me...

Example Embodiment

[0046] Example 2

[0047] The tempering temperature is preferably 900℃, and the fan flow is preferably 15000m 3 / h.

[0048] For the actual composition of the glass, refer to Experimental Example 2 in Table 1, using the same raw materials and requirements as in Example 1, and using the same melting process system and test conditions. Table 1 shows the basic properties of the sample. (1) The density is 2.62g / cm 3 ; (2) The average thermal expansion coefficient in the range of room temperature to 400℃ is 45.89×10 -7 / ℃; (3) Softening temperature (10 5 ~10 7 Poise) 921℃; (4) Flexural strength 258Mpa; (5) Transmittance 90.3% (6) Refractive index N d 1.5332 Young's modulus E(10 7 pa)8290

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Abstract

The invention discloses high temperature and high pressure resistant alkali-free aluminosilicate glass for a high pressure liquidometer, and is characterized in that the high temperature and high pressure resistant alkali-free aluminosilicate glass for the high pressure liquidometer comprises the oxide components by the mass percentage: (55-65)% of SiO2, (14-25)% of Al2O3, (3-8)% of B2O3, (5-12)% of CaO, (4-10)% of MgO, (3-8)% of BaO, (0.2-0.5)% of As2O3, (0.2-0.5)% of Sb2O3, (0.1-0.3)% of NaNO3, and (0.2-0.5)% of ZrO2. The glass contains no alkali metal oxides in the composition, has the advantages of high temperature resistance, high pressure resistance, high tenacity, high Young modulus, good chemical stability, suitable expansion coefficient of physical tempering, high transparency and the like, and is applied in requirements of high temperature and high pressure resistant glass view windows for harsh work condition environments of high temperature and high pressure steam liquidometer observation windows, high pressure pipeline view mirrors, deep-sea exploration equipment observation windows and the like in steel metallurgy, petrochemical engineering, thermal power plants and other industries.

Description

technical field [0001] The invention relates to the technical field of glass manufacturing, in particular to an alkali-free aluminosilicate glass for high-pressure liquid level gauges resistant to high temperature and high pressure. Background technique [0002] With the continuous innovation and development of various new energy sources, new materials, and new technologies, as well as the needs of seabed resource exploration, various petrochemical, refining and cracking devices, thermal power plants, thermal power plants, etc. Development requires the development of high temperature resistance, high pressure resistance, high toughness, and expansion coefficient suitable for physical tempering. The expansion coefficient of the glass is required to be ﹙40~50﹚×10 -7 Between / ℃, glass windows with good thermal shock resistance, the aluminosilicate glass products of the prior art can only produce ultra-thin aluminosilicate glass with alkali, which is manufactured by float proce...

Claims

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Application Information

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IPC IPC(8): C03C3/093C03C1/00C03B5/027C03B5/235C03B19/02C03B15/02G01F23/02
CPCC03C3/093C03B5/027C03B5/235C03B15/02C03B19/02C03C1/004G01F23/02
Inventor 陈玉林
Owner 南京神童特种玻璃技术有限公司
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