Tempered/semi-tempered vacuum glass and method for manufacturing same

Abstract

The invention discloses tempered / semi-tempered vacuum glass and a method for manufacturing the same. The method comprises the following steps of: selecting two pieces of tempered flat glass as upper and lower base plates of the vacuum glass; uniformly coating glass solders on the surface of the upper base plate or the lower base plate, namely the tempered flat glass, along the edge of the tempered flat glass, wherein the thickness of the glass solders is greater than the height of a used support; performing natural or heating type airing / drying on the coated glass solders, and removing liquid components and volatile solid components to solidify and shape the glass solders; combining the two pieces of tempered flat glass, namely compositing the two pieces of tempered flat glass together; adding the two pieces of tempered flat glass, composited together, into a heating furnace for edge sealing and heating so as to melt the coated glass solders; cooling, and starting to uniformly pressurize the two pieces of tempered flat glass before the glass solders are solidified, so as to enable the thicknesses of the solidified glass solders to be equal to one another and equal to the height of the support in an intermediate layer, and complete the edge sealing of the vacuum glass.

Description

technical field [0001] The present invention relates to a kind of toughened and semi-tempered vacuum glass and its manufacturing method, in particular to a method for ensuring that the final product of vacuum glass can maintain the tempering characteristics of tempered and semi-tempered flat glass to the greatest extent, so as to improve the safety of vacuum glass Performance, so that it can be more widely used in buildings, commercial appliances, thermal insulation doors and windows of refrigeration appliances, locomotive windows, solar energy utilization and other facilities. Background technique [0002] The basic function of vacuum glass is to form a physical layer of heat insulation and sound insulation, which is a new type of energy-saving and environmentally friendly material. It has excellent thermal insulation and sound insulation properties and is widely used in construction projects, especially as the outer envelope structure material of high-end buildings. Ordin...

AI Technical Summary

Problems solved by technology

However, due to the high sealing temperature (above 440°C) of the existing low melting point glass powder under the existing process conditions, the tempered glass is annealed into ordinary glass after being heated at a high temperature, and if forced at a lower sealing temperature ( For example, sealing at 400°C), due to the low fluidity and poor wettability of the melted low-melting glass powder, the width of flow and infiltration to the middle layer during the edge sealing process is extremely small, and a reliable seal cannot be formed.

Images