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Lead-free crystal ware and preparation process thereof

A lead-free crystal and preparation process technology, applied in manufacturing tools, glass manufacturing equipment, blown glass, etc., can solve the problems of texture and low refractive index, and achieve the effect of improving clarity, increasing refractive index and enhancing density

Pending Publication Date: 2020-08-14
承德华富玻璃技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many lead-free crystal glasses in China, but their properties such as texture and refractive index are far lower than those of lead-containing crystal glasses.
At present, it is difficult to process glassware comparable to leaded crystal glassware by using lead-free glass raw materials

Method used

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  • Lead-free crystal ware and preparation process thereof
  • Lead-free crystal ware and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A lead-free crystal glassware, the preparation process is as follows:

[0026] Weigh the following batch of oxide composition percentage: SiO 2 :73%, Na 2 O: 10.41%, K 2 O: 4.99%, CaO: 3.19%, ZnO: 2.41%, BaO: 4.05%, Li 2 O:0.05%, CeO 2 :0.3%, B 2 o 3 :1.02%, Al 2 o 3 :0.58%.

[0027] Calculate the batch according to the above-mentioned composition percentage, and then carry out uniform mixing.

[0028] The mixed batch materials are melted in a continuous glass electric melting furnace;

[0029] The molten glass is blown into glassware of different shapes by mold;

[0030] The glassware obtained after blowing is annealed through a continuous annealing kiln, and the annealing temperature is 530-540°C. to get the finished product.

Embodiment 2

[0032] A lead-free crystal glassware, the preparation process is as follows:

[0033] Take the batching material of following percentage by weight: SiO 2 :72.77%, Na 2 O: 10.41%, K 2 O:5.73%, CaO:3.23%, ZnO:2.43%, BaO:4.05%, Li 2 O:0.05%, CeO 2 :0.3%, B 2 o 3 :0.83%, Al 2 o 3 :0.2%.

[0034] Calculate the batch material according to the above-mentioned composition percentage, and then mix it uniformly;

[0035] The mixed batch materials are melted in a continuous glass electric melting furnace;

[0036] The molten glass is blown into glassware of different shapes by mold;

[0037] The glassware obtained after blowing is annealed through a continuous annealing kiln, and the annealing temperature is 530-540°C. to get the finished product.

Embodiment 3

[0039] A lead-free crystal glassware, the preparation process is as follows:

[0040] Take the batching material of following percentage by weight: SiO 2 :70.2%, Na 2 O: 10.41%, K 2 O:5.73%, CaO:3.23%, ZnO:5%, BaO:4.1%, Li 2 O:0.05%, CeO 2 :0.25%, B 2 o 3 :0.83%, Al 2 o 3 :0.2%.

[0041] Calculate the batch material according to the above-mentioned composition percentage, and then mix it uniformly;

[0042] The mixed batch materials are melted in a continuous glass electric melting furnace;

[0043] The molten glass is blown into glassware of different shapes by mold;

[0044] The glassware obtained after blowing is annealed through a continuous annealing kiln, and the annealing temperature is 530-540°C. to get the finished product.

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Abstract

The invention discloses lead-free crystal glassware and a preparation process thereof. The lead-free crystal glass ware comprises the following components in percentage by weight: SiO2: 69%-4%, Na2O:9%-11.5%, K2O: 4.4%-5.3%, CaO:2.5%-3.5%, ZnO:2.4%-3.5%, BaO: 3.5%-4.5%, Li2O: 0.05%-0.2%, CeO2: 0.25%-0.5%, B2O3: 0.6-1.0%, and Al2O3:0.1-0.3%. The glassware does not contain metal lead, and the optimal component combination has the characteristics of density (g is more than or equal to 2.85 g / cm < 3 >), refractive index (nD is more than or equal to 1.535), transmittance (t is more than 91.5) andexcellent chemical stability similar to those of lead-containing crystal glassware.

Description

technical field [0001] The technical field of the glass material of the present invention particularly relates to a lead-free crystal glass vessel and a preparation process thereof. Background technique [0002] Crystal glass increases its refractive index and density by adding a certain amount of metal lead, so that it has a strong visual effect and a thick texture. There is a metallic sound when it is struck, which is beautiful and pleasing to the ear. Due to its relatively high heavy metal content, it oozes out during use, so it is not suitable for using crystal glass as a food container. [0003] At present, there are many lead-free crystal glasses in China, but their properties such as texture and refractive index are far lower than those of lead-containing crystal glasses. At present, it is difficult to process glassware comparable to leaded crystal glassware by using lead-free glass raw materials. Contents of the invention [0004] Based on the above problems, th...

Claims

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Application Information

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IPC IPC(8): C03C3/095C03C1/00C03B9/00
CPCC03C3/095C03C1/00C03B9/00
Inventor 吴作军王宁秦诚于广才彭宏志刘贺涛田瑞国陈彪
Owner 承德华富玻璃技术工程有限公司