CN104843979A - Processing technology for tempered glass - Google Patents

Abstract

The invention discloses a processing technology for tempered glass, and belongs to the field of tempered glass. The processing technology comprises the following steps: preheating, rapidly heating, cooling, recooling and naturally cooling. Through preheating before heating, and an intermittent aeration mode at the cooling stage, the toughening degree is accurately controlled, so that the spontaneous explosion phenomenon in the tempered glass processing process is greatly reduced; the yield is improved; and the production cost is reduced.

Description

A kind of toughened glass complete processing

Technical field

The present invention relates to a kind of toughened glass complete processing, belong to toughened glass field.

Background technology

Toughened glass is a kind of prestressed glass in fact, for improving the intensity of glass, the method of usual use chemistry or physics, stress is formed at glass surface, first offset skin stress when glass bears external force, thus improve supporting capacity, reinforcing glass self anti-wind pressure, cold and heat, impact etc.Using Physical to manufacture in the process of toughened glass, needing simple glass to be warming up to tempering temperature, then cooling rapidly, form prestress.But glass heats up too fast, and inequality of being easily heated, causes glass quality to decline; In addition, cooling rapidly in formation prestress process, easily produce self-destruction, this is because prestress forms the bad control of size, prestress is larger, and toughening degree is higher, and self-destruction rate is also higher, causes yield rate low, additionally increases production cost.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of toughened glass complete processing, and it further avoid the phenomenon that toughened glass produces self-destruction in the fabrication process.

The technical scheme that technical problem to be solved by this invention is taked is:

A kind of toughened glass complete processing, it comprises the steps:

A. preheat, be positioned over by glass in annealing furnace, start slowly to heat, make the temperature from ambient of glass be warmed up to 120-150 DEG C gradually, whole process continues 150-180 second;

B. rapid heating, by the temperature fast lifting of glass to 600-650 DEG C, and keeps 300-360 second;

C. cool, within 1.5-2 second, glass is moved into air grid by annealing furnace, start intermittent blowing, blowing 1-5 second, stop 1-2 second, whole process lasts 30-40 second, glass temperature is down to 480-500 DEG C;

D. cool again, continue blowing 160-200 second, glass temperature is down to 45-50 DEG C;

E. naturally cooling, takes out glass from air grid, naturally cools to room temperature.

The invention has the beneficial effects as follows: by first preheating before heating, and adopt intermittent blowing mode at cooling stages, accurately control toughening degree, thus greatly reduce the self-destruction phenomenon in the toughened glass course of processing, improve good article rate, decrease production cost.

Embodiment

In order to technique means of the present invention, creation characteristic, reach object and effect is easy to understand, set forth the present invention further:

A kind of toughened glass complete processing, it comprises the steps:

A. preheat, be positioned over by glass in annealing furnace, start slowly to heat, make the temperature from ambient of glass be warmed up to 120-150 DEG C gradually, whole process continues 150-180 second;

B. rapid heating, by the temperature fast lifting of glass to 600-650 DEG C, and keeps 300-360 second;

C. cool, within 1.5-2 second, glass is moved into air grid by annealing furnace, start intermittent blowing, blowing 1-5 second, stop 1-2 second, whole process lasts 30-40 second, glass temperature is down to 480-500 DEG C;

D. cool again, continue blowing 160-200 second, glass temperature is down to 45-50 DEG C;

E. naturally cooling, takes out glass from air grid, naturally cools to room temperature.

Embodiment 1

A. preheat, glass is positioned in annealing furnace, start slowly to heat, make the temperature from ambient of glass be warmed up to 120 DEG C gradually, omnidistance lasting 150 seconds;

B. rapid heating, by the temperature fast lifting to 600 DEG C of glass, and keeps 300 seconds;

C. cool, in 1.5 seconds, glass is moved into air grid by annealing furnace, start intermittent blowing, dry 1 second, stop 1 second, whole process lasts 40 seconds, is down to 480 DEG C by glass temperature;

D. cool again, continue blowing 160 seconds, glass temperature is down to 45 DEG C;

E. naturally cooling, takes out glass from air grid, naturally cools to room temperature;

Result: in 100 pieces of experimental glass, self-destruction phenomenon production rate 0%, toughened glass surface stress mean value is 92.37MPa.

Embodiment 2

A. preheat, glass is positioned in annealing furnace, start slowly to heat, make the temperature from ambient of glass be warmed up to 130 DEG C gradually, omnidistance lasting 160 seconds;

B. rapid heating, by the temperature fast lifting to 630 DEG C of glass, and keeps 340 seconds;

C. cool, in 1.5 seconds, glass is moved into air grid by annealing furnace, start intermittent blowing, dry 3 seconds, stop 1 second, whole process lasts 36 seconds, is down to 480 DEG C by glass temperature;

D. cool again, continue blowing 160 seconds, glass temperature is down to 45 DEG C;

E. naturally cooling, takes out glass from air grid, naturally cools to room temperature.

Result: in 100 pieces of experimental glass, self-destruction phenomenon production rate 0%, toughened glass surface stress mean value is 95.48MPa.

Embodiment 3

A. preheat, glass is positioned in annealing furnace, start slowly to heat, make the temperature from ambient of glass be warmed up to 140 DEG C gradually, omnidistance lasting 180 seconds;

B. rapid heating, by the temperature fast lifting to 640 DEG C of glass, and keeps 360 seconds;

C. cool, in 1.5 seconds, glass is moved into air grid by annealing furnace, start intermittent blowing, dry 5 seconds, stop 1 second, whole process lasts 30 seconds, is down to 500 DEG C by glass temperature;

D. cool again, continue blowing 200 seconds, glass temperature is down to 45 DEG C;

E. naturally cooling, takes out glass from air grid, naturally cools to room temperature.

Result: in 100 pieces of experimental glass, self-destruction phenomenon production rate 0%, toughened glass surface stress mean value is 96.25MPa.

More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand, and the present invention is not restricted to the described embodiments, and without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (1)

1. a toughened glass complete processing, is characterized in that: it comprises the steps:

A. preheat, be positioned over by glass in annealing furnace, start slowly to heat, make the temperature from ambient of glass be warmed up to 120-150 DEG C gradually, whole process continues 150-180 second;

B. rapid heating, by the temperature fast lifting of glass to 600-650 DEG C, and keeps 300-360 second;

C. cool, within 1.5-2 second, glass is moved into air grid by annealing furnace, start intermittent blowing, blowing 1-5 second, stop 1-2 second, whole process lasts 30-40 second, glass temperature is down to 480-500 DEG C;

D. cool again, continue blowing 160-200 second, glass temperature is down to 45-50 DEG C;

E. naturally cooling, takes out glass from air grid, naturally cools to room temperature.