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Manufacturing method for lead-free sealing glass with transitional expansion coefficient

A technology of expansion coefficient and manufacturing method, applied in glass manufacturing equipment, glass molding, manufacturing tools and other directions, can solve the problems of increased difficulty, difficult product quality control, complicated sealing process, etc., and achieves low cost and simple sealing process. , The effect of easy control of product quality

Active Publication Date: 2013-10-09
SHANDONG KANGYOU GLASS MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sealing process of this method is complicated, and the product quality is difficult to control, especially when the cross-section of the sealed device is a ring structure, the difficulty of adopting the transitional sealing method is further increased

Method used

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  • Manufacturing method for lead-free sealing glass with transitional expansion coefficient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The parts by weight of raw materials used consist of:

[0024] 51.96 parts of quartz sand, 3.83 parts of aluminum hydroxide, 13.99 parts of bismuth trioxide, 2.16 parts of ferric oxide, 14.46 parts of sodium carbonate, 4.64 parts of sodium nitrate, 19.39 parts of potassium carbonate, 5.52 parts of potassium nitrate, 2.74 parts of magnesium oxide, 2.73 parts of calcium carbonate.

[0025] The specific steps of the manufacturing method are as follows:

[0026] (1) After mixing the above raw materials evenly, melt and homogenize them in a kiln at 1753K to obtain a glass melt;

[0027] (2) After the glass melt flows through the material channel to the working part, the temperature drops to 1423K, and then it is continuously cast on a cast iron mold with a temperature of 733K through a material guide pipe to obtain a basic glass with a thickness of 6cm, which is pulled by a cast iron crawler Enter the annealing kiln, anneal at 735K for 1.5h and then cool with the furnace; ...

Embodiment 2

[0031] The parts by weight of raw materials used consist of:

[0032] 50.56 parts of quartz sand, 3.73 parts of aluminum hydroxide, 13.61 parts of bismuth trioxide, 2.10 parts of ferric oxide, 14.07 parts of sodium carbonate, 4.51 parts of sodium nitrate, 18.87 parts of potassium carbonate, 5.37 parts of potassium nitrate, 2.66 parts of magnesium oxide, 5.24 parts of barium carbonate.

[0033] The specific steps of the manufacturing method are as follows:

[0034] (1) After mixing the above raw materials evenly, melt and homogenize them in a kiln at 1723K to obtain a glass melt;

[0035] (2) After the glass melt flows through the material channel to the working part, the temperature drops to 1373K, and then it is continuously cast on a cast iron mold with a temperature of 733K through a material guide pipe to obtain a basic glass with a thickness of 3cm, which is pulled by a cast iron crawler Enter the annealing kiln, anneal at 723 for 1.5h and then cool with the furnace;

...

Embodiment 3

[0039] The parts by weight of raw materials used consist of:

[0040] 51.61 parts of quartz sand, 3.81 parts of aluminum hydroxide, 13.90 parts of bismuth trioxide, 2.15 parts of ferric oxide, 14.37 parts of sodium carbonate, 4.61 parts of sodium nitrate, 19.26 parts of potassium carbonate, 5.48 parts of potassium nitrate, 2.72 parts of magnesium oxide, Zinc oxide 2.21 parts.

[0041] The specific steps of the manufacturing method are as follows:

[0042] (1) After mixing the above raw materials evenly, melt and homogenize them in a kiln at 1753K to obtain a glass melt;

[0043] (2) After the glass melt flows through the material channel to the working part, the temperature drops to 1423K, and then it is continuously cast on a cast iron mold with a temperature of 733K through a material guide pipe to obtain a basic glass with a thickness of 6cm, which is pulled by a cast iron crawler Enter the annealing kiln, anneal at 725K for 1.5h and then cool with the furnace;

[0044] ...

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Abstract

The invention relates to the field of glass new materials, and particularly discloses a manufacturing method for a lead-free sealing glass with a transitional expansion coefficient. The lead-free sealing glass is obtained by using quartz sand, aluminium hydroxide, bismuth trioxide, ferric oxide, sodium carbonate, potassium carbonate, magnesium oxide, calcium carbonate, barium carbonate and zinc oxide as raw materials and through the steps of mixing the above raw materials uniformly, melting the mixed materials and homogenizing to obtain a glass melt, then treating the glass melt by casting, annealing, cutting, buffing, polishing and performing heat treatment under a reduction atmosphere. The manufacturing method for the lead-free sealing glass with the transitional expansion coefficient overcomes various disadvantages in a conventional transitional sealing method, has the advantages of simple sealing process, low cost, easily controllable quality and the like, and is very suitable for situations that the cross section of a to-be-sealed device is in a circle structure.

Description

(1) Technical field [0001] The invention relates to the field of new glass materials, in particular to a method for manufacturing transition expansion coefficient lead-free sealing glass. (2) Background technology [0002] Sealing glass is a kind of special glass that connects and seals different materials. The substrate materials that can be sealed include metal, ceramics and glass. It is widely used in electric vacuum and microelectronics technology, laser and infrared technology, high energy physics, energy , aerospace, automotive and many other fields. With the miniaturization of instrument components, the precision level of structural group components continues to increase, the variety of electronic components is increasing, and the appearance of products is becoming more and more complicated. This requires more and more quality requirements for sealing glass. high. Lead glass has the characteristics of large glass forming range, high refractive index and long mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/02C03C6/00
Inventor 刘树江王树美
Owner SHANDONG KANGYOU GLASS MATERIAL CO LTD
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