Normal-temperature vacuumizing method of vacuum glass

Abstract

The invention relates to a normal-temperature vacuumizing method of vacuum glass, comprising the following steps of; using low-melting-point glass powder to seal edges of substrate glass provided with supports, a laminated piece, and a glass air suction pipe of which one installation end is a blind head; heating in a normal-pressure heating furnace to 350-500 DEG C and maintaining the temperature for 20-40min; discharging from the furnace when cooling to the room temperature; transferring to a vacuum pump set, unsealing a blind head pipe; butting an unsealed glass pipe and the vacuum pump set; performing vacuumizing at the room temperature; when the negative pressure in a vacuum glass chamber meets requirement, heating root of the glass pipe to perform hot melting and edge sealing; and obtaining the vacuum glass at the room temperature. In the invention, the vacuum glass is sintered in the heating furnace; the edges of the vacuum glass are sealed; the vacuumizing is performed outdoors and is not limited by the space in the furnace, therefore, the suction hole butting and sealing are greatly convenient; the manufacturing cost of the vacuum glass is greatly reduced; and the energy-saving effect is good and the production efficiency is high.

Description

technical field [0001] The invention belongs to the field of vacuum glass, and relates to the vacuuming of vacuum glass, in particular to a normal temperature vacuuming method of vacuum glass. Background technique [0002] The traditional process of sealing the vacuum glass exhaust pipe is: start vacuuming in a high temperature environment, and the vacuum degree in the vacuum chamber reaches 7×10 -1 pa-10 -2 Stop vacuuming during pa and start sealing. The reason for this is: there is water on the surface of the glass itself and there is also water in the deep layer. Only by releasing the water on the surface and deep layer of the glass at high temperature can it be ensured that the vacuum glass will not release gas during use in the future, so as to ensure that the vacuum chamber The vacuum degree inside is within the standard range, prolonging the service life of the vacuum glass. [0003] The above-mentioned methods are all vacuum pumped at high temperature, the operati...

AI Technical Summary

Problems solved by technology

[0003] The above methods are all vacuum pumping at high temperature, the operating environment is relatively harsh, the operating space is small, the production effici