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A kind of glass material for high temperature and high pressure sealing and preparation method thereof

A high-pressure sealing, glass material technology, applied in the field of glass, can solve problems such as inability to achieve, achieve the effects of smooth and smooth packaging surface, excellent sealing strength and quality, good stability and reliability

Active Publication Date: 2011-12-14
湖南江麓仪器仪表有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the sealing selection of products used in higher temperature and pressure environments (not lower than 300°C, not lower than 100Mpa), most of the sealing glass materials currently cannot meet the main performance indicators required, such as high insulation performance, high temperature sealing, long-term stability and reliability, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A high temperature and high pressure resistant glass material for sealing, made of the following components by weight: SiO 2 : 0.9kg; H 3 BO 3 : 2.5kg; Al 2 o 3 : 0.4㎏; SrCO 3 : 0.5kg; Pb 3 o 4 : 5㎏; and other impurity components that are inevitably brought in ≤0.1㎏.

[0034] The preparation method of the above-mentioned high temperature and high pressure resistant glass material for sealing comprises the following steps:

[0035] a), batching: take each component according to parts by weight;

[0036] b), ball milling: put each component prepared in step a into the ball mill and carry out mixing and ball milling for 60 minutes at a speed of about 350r / min, so that the ingredients are evenly mixed;

[0037] c), pre-sintering: take out the ball-milled material in step b and place it in a crucible, put it into a sintering furnace, and raise the temperature up to 800°C at a rate of about 5°C / min in an air atmosphere for pre-sintering, pre-sintering The time is 30 ...

Embodiment 2

[0050] A high temperature and high pressure resistant glass material for sealing, made of the following components by weight: SiO 2 : 1.2kg; H 3 BO 3 : 2.7㎏; Al 2 o 3 : 0.6kg; SrCO 3 : 0.8㎏; Pb 3 o 4 : 5.3㎏; and make other impurity elements ≤ 0.1㎏.

[0051] The preparation method of the above-mentioned high-temperature-resistant and high-pressure sealing glass material is the same as in Example 1. The ball mill is mixed and ball-milled at a speed of about 450r / min for 30min; the pre-sintering is raised to 810°C at a rate of about 11°C / min; The medium of the treated wet grinding process is distilled water.

[0052] The glass material for high temperature and high pressure sealing is packaged with Inconel X-750 stainless steel alloy and lead metal. The packaging method is the same as that of Example 1. In the air atmosphere or vacuum atmosphere, the temperature is raised to 720°C at a rate of about 13°C / min.

[0053] The performance test method of the high temperature an...

Embodiment 3

[0055] A high temperature and high pressure resistant glass material for sealing, made of the following components by weight kg: SiO 2 : 1.0kg; H 3 BO 3 : 2.6kg; Al 2 o 3 : 0.5kg; SrCO 3 : 0.6kg; Pb 3 o 4 : 5.1㎏; other impurity elements inevitably brought in: ≤0.1㎏.

[0056] The preparation method of the above-mentioned high-temperature-resistant and high-pressure sealing glass material is the same as in Example 1, and the ball mill is mixed and ball-milled at a speed of about 400r / min for 45min; the pre-sintering is raised to 810°C at a rate of about 8°C / min; The medium of the treated wet grinding process is distilled water.

[0057] The glass material for high temperature and high pressure sealing is packaged with Inconel 925 stainless steel alloy. The packaging method is the same as that in Example 1. In a vacuum atmosphere, the temperature is raised to 720° C. at a rate of about 10° C. / min.

[0058] The performance test method of the high temperature and high press...

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Abstract

The invention discloses a high temperature and high pressure resistant glass material for sealing and a preparation method thereof, which is prepared from the following components in parts by weight: SiO2: 9-12 parts; H3BO3: 25-27 parts; Al2O3: 4-6 parts; SrCO3 : 5 to 8 parts; Pb3O4: 50 to 53 parts; other impurity elements inevitably brought in: ≤1 part. The preparation method of the above-mentioned high temperature and high pressure resistant glass material comprises the following steps: a) batching; b) ball milling; c) pre-sintering; e) heat preservation and sintering; e) water quenching; f) ball milling; g) sieving; h )dry. The invention also provides a method for encapsulating the above-mentioned high-temperature and high-pressure-resistant sealing glass material with an alloy and a performance testing method. The sealing glass material of the present invention can be matched and sealed with Kovar alloy or other lead metals and stainless steel alloys of different grades, and has excellent sealing strength and quality; by controlling the packaging method, the sealing member can be used normally in high temperature, high pressure environment and destructive environment , with good stability and reliability.

Description

technical field [0001] The invention relates to a glass, in particular to a high temperature and high pressure resistant sealing glass material and a preparation method thereof. Background technique [0002] In the field of modern industry, agriculture and special industries, a large number of functional devices such as thermocouples, thermal resistances, heating devices and signal connectors are used to control and measure parameters such as temperature, pressure and electromagnetic. With the development, the requirements for packaging materials and sealing technology are getting higher and higher, especially in harsh environments such as high temperature, high pressure, oil and gas exploration and other fields. Traditional encapsulation methods such as using various epoxy resins, silicone rubber and different high-temperature adhesives for curing and sealing. Since these high-temperature adhesives are all organic materials, due to their own performance limitations, they ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/24
Inventor 唐会毅王华罗维凡张立新张祖力陈洁崔小劲肖国忠
Owner 湖南江麓仪器仪表有限公司
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