Processing technology for tempered glass

Abstract

The invention provides a processing technology for tempered glass, belonging to the field of glass manufacturing. The processing technology comprises the following steps: heating, cooling, slow heating, slow cooling, natural cooling, spray cleaning, cleaning, drying and the like. Through slow heating and slow cooling of the glass and conversion of high-temperature nickel sulfide, the self-explosion rate of the tempered glass is lowered; and aqua regia is employed for jet scrubbing of the surface of the tempered glass so as to dissolve nickel sulfide on glass surfaces in the aqua regia, so theself-explosion rate is further lowered. This processing technology has the advantage of capacity of greatly reducing the self-explosion rate of the tempered glass.

Description

technical field

[0001] The invention belongs to the field of glass manufacturing and relates to a processing technology of tempered glass. Background technique

[0002] Tempered glass is safety glass. Tempered glass is actually a kind of prestressed glass. In order to improve the strength of glass, chemical or physical methods are usually used to form compressive stress on the glass surface. Wind pressure, cold and heat, impact, etc.

[0003] The expansion of nickel sulfide inside the tempered glass is the main reason for the self-explosion of the tempered glass. After the glass is tempered, the surface layer of the glass will form compressive stress. The inner core layer forms tensile stress, while compressive stress and tensile stress together form a balanced body. However, glass is a material with high brittleness, strong pressure resistance, but weak tensile property, so most glass breakage is caused by changes in tensile stress. When the nickel sulfide crystal (in ...

Examples

Embodiment Construction

[0027] The processing technology of this toughened glass comprises the following steps:

[0028] a. Heating, place the glass in a tempering furnace and heat it until the temperature of the glass reaches 630-650 degrees, and the heating time is 7-8 minutes; a1, the first heat preservation, keep the heated glass at a temperature of 630-650 3-5 minutes;

[0029] b. Cooling, quickly put the heated glass on the air grid for rapid cooling until the temperature drops to 300-320 degrees, and the cooling time is 10-15 seconds; b1, the second heat preservation, maintain the rapidly cooled glass at the temperature 3-5 minutes at 300-320 degrees.

[0030] c. Slow heating, slowly heating the cooled glass at a temperature of 3-5 degrees per minute, heating to 480-490 degrees, and maintaining the temperature for 10-20 minutes;

[0031] d. Slow cooling, slowly cooling the slowly cooled glass at a temperature of 2-3 degrees per minute, cooling to 378-400 degrees, and maintaining the temperat...

technical field

[0001] The invention belongs to the field of glass manufacturing and relates to a processing technology of tempered glass. Background technique

[0002] Tempered glass is safety glass. Tempered glass is actually a kind of prestressed glass. In order to improve the strength of glass, chemical or physical methods are usually used to form compressive stress on the glass surface. Wind pressure, cold and heat, impact, etc.

[0003] The expansion of nickel sulfide inside the tempered glass is the main reason for the self-explosion of the tempered glass. After the glass is tempered, the surface layer of the glass will form compressive stress. The inner core layer forms tensile stress, while compressive stress and tensile stress together form a balanced body. However, glass is a material with high brittleness, strong pressure resistance, but weak tensile property, so most glass breakage is caused by changes in tensile stress. When the nickel sulfide crystal (in ...

Examples

Embodiment Construction

[0027] The processing technology of this toughened glass comprises the following steps:

[0028] a. Heating, place the glass in a tempering furnace and heat it until the temperature of the glass reaches 630-650 degrees, and the heating time is 7-8 minutes; a1, the first heat preservation, keep the heated glass at a temperature of 630-650 3-5 minutes;

[0029] b. Cooling, quickly put the heated glass on the air grid for rapid cooling until the temperature drops to 300-320 degrees, and the cooling time is 10-15 seconds; b1, the second heat preservation, maintain the rapidly cooled glass at the temperature 3-5 minutes at 300-320 degrees.

[0030] c. Slow heating, slowly heating the cooled glass at a temperature of 3-5 degrees per minute, heating to 480-490 degrees, and maintaining the temperature for 10-20 minutes;

[0031] d. Slow cooling, slowly cooling the slowly cooled glass at a temperature of 2-3 degrees per minute, cooling to 378-400 degrees, and maintaining the temperat...