Manufacturing method of toughened vacuum glass

Abstract

The invention relates to a manufacturing method of toughened vacuum glass, which comprises the following steps: (1) after drying the pre-treated glass, arranging a support on the glass; (2) spraying or steeping chemical liquid medicine on the surface of the glass, the chemical liquid medicine is of metal oxide chemical glass toughened liquid medicine sold on the market, and the concentration of the chemical liquid medicine is controlled to the solution saturation; (3) arranging two pieces of glass which is coated or steeped with chemical liquid medicine on a platform for combining, sealing the edge of the glass, and heating the glass in a heating furnace, wherein the temperature inside the furnace is 200 to 800 DEG C, and the time is 1.5 to 10 hours; and at the same time completing the ventilation, vacuum pumping, edge sealing and sealing, and reducing the temperature to obtain the finished product. The manufacturing method breaks through the international and the domestic blank that the ordinary glass and the toughened glass cannot be directly utilized to manufacture the vacuum glass, so the manufacturing and the application cost of the safety glass in the fields such as the building can be greatly reduced, the heating times and the heat loss of the glass can be greatly reduced, and the strength and the service life of the glass can be improved.

Description

technical field [0001] The invention belongs to the field of vacuum glass, in particular to a method for manufacturing tempered vacuum glass. Background technique [0002] At present, the whole world cannot directly use tempered glass to manufacture tempered vacuum glass at direct high temperature. There are two types of tempered glass. The surface is rapidly cooled, causing a temperature difference between the inside and outside of the glass, resulting in a large compressive stress on the glass surface and a large internal tensile stress, thereby increasing the strength of the glass; the other is chemically tempered glass, which refers to ordinary glass in chemical liquid. Soak and heat the liquid medicine to more than 500 degrees, and complete the process of enhancing the surface stress after several hours of ion exchange. The tempered glass produced by the above two methods cannot be subjected to high-temperature annealing (about 380 degrees), otherwise the surface stres...

AI Technical Summary

Problems solved by technology

The tempered glass produced by the above two methods cannot be subjected to high-temperature annealing (about 380 degrees), otherwise the surface stress of the tempered glass will be greatly reduced or even disappeared, and the tempered glass will lose its tempering quality, thereby reducing its strength and safety protection performance

[0003] Since the current vacuum glass edge sealing must go through a high-temperature process of more than 400 degrees for about two hours, it is difficult to meet the requirements of no annealing of tempered glass and no relaxation of glass surface stress.

Therefore, with the current technology, it is not possible to directly manufacture vacuum glass with the tempered glass products that have been prepared.