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Novel method for improving strength and thermal shock property of opacified glass product

A technology of opacity glass and thermal shock, which is applied in glass tempering, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of low mechanical strength, complicated process, and poor thermal shock performance of tableware, and achieve suitable promotion and technological process Simple, good thermal shock resistance

Inactive Publication Date: 2017-12-08
JIANGSU JIELONG GLASSWARE TECH
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Problems solved by technology

[0005] The invention provides a new method for improving the strength and thermal shock resistance of opaque glass products, which mainly solves the factors such as low mechanical strength, poor thermal shock performance and complicated process of the tableware produced in the prior art

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  • Novel method for improving strength and thermal shock property of opacified glass product

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Embodiment

[0025] Please refer to figure 1 , a new method of improving the strength and thermal shock resistance of opaque glass products, that is, by implementing chemical tempering (ion replacement method) during the physical tempering (air-cooling quenching) process of opaque glass products to improve their strength and thermal shock resistance; Include the following steps:

[0026] (1) Screening of ion exchange materials: select K 3 PO 4 、KNO 3 , KCL, K 2 SO 4 Any one of the materials; according to the comprehensive consideration of the effect, safety, environmental protection, cost and other factors, after repeated tests, KCL is finally selected as the ion exchange raw material.

[0027] (2) The definition of the initial temperature during ion replacement (chemical toughening): the initial temperature is 400°C, the cut-off temperature is 640°C; the chemical toughening time is between 6min-8min; the determination of the initial test temperature of spraying starts from the temper...

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Abstract

The invention discloses a novel method for improving the strength and the thermal shock property of an opacified glass product. In a thermal tempering (forced-air hardening) process of the opacified product, chemical tempering (ion substitution method) is implemented to improve the strength and the thermal shock property. The problems of poor mechanical strength and thermal shock property, complex process and the like of tableware produced in the prior art are mainly solved.

Description

technical field [0001] The invention relates to the field of tableware preparation, in particular to a new method for improving the strength and thermal shock resistance of opaque glass products. Background technique [0002] During the molding process, the surface of the glass will produce micro-cracks, which are easily broken when subjected to external impact, and may burst when generally subjected to low temperature changes (△t<80°C). The glass opacified with fluorine or phosphorus will precipitate larger grains, and the mechanical strength and thermal shock resistance of shaped products such as cups, saucers, bowls, and plates after molding are better than those of transparent soda-calcium-silicon transparent glass. Poor product. In order to improve the applicability of milky white glassware, most domestic milky white glassware manufacturers use physical tempering (air cooling and quenching) to improve the strength and thermal shock resistance of the product. The im...

Claims

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Application Information

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IPC IPC(8): C03B27/02C03B27/012C03B27/04
CPCC03B27/012C03B27/028C03B27/04
Inventor 孙国刚徐惠豪潘志成
Owner JIANGSU JIELONG GLASSWARE TECH
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