Low-radiation coated glass capable of being toughened off line and production method thereof

Abstract

The invention discloses low-radiation coated glass capable of being toughened off line, which comprises a glass substrate. A silicon nitride Si3O4 layer, a metal nickel-chromium NiCr layer, a metal silver Ag layer, a metal nickel-chromium NiCr layer and a silicon nitride Si3O4 layer are sequentially arranged on the glass substrate. A production method of the low-radiation coated glass capable of being toughened off line comprises the steps of respectively setting the basic vacuum and the linear speed of dual-end offline high-vacuum magnetron sputtering coating equipment to be 10<3> Pa and 2.5m / minute, and the sequentially sputtering the silicon nitride Si3O4 layer, the metal nickel-chromium NiCr layer, the metal silver Ag layer, the metal nickel-chromium NiCr layer and the silicon nitride Si3O4 layer on the glass substrate. On the premise that the low radiance and the low heat transfer performance of the coating are realized, the low-radiation coated glass capable of being toughened off line has the advantage that the deep processing such as heat treatment at different places of the glass can be realized.

Description

technical field [0001] The invention relates to a glass and a manufacturing method thereof, in particular to an off-line steelable low-emissivity coated glass and a manufacturing method thereof. Background technique [0002] The existing common off-line low-emissivity coated glass adopts other materials for the film system configuration, the weather resistance, acid and alkali resistance of the film layer are poor, the film layer is soft, easy to oxidize, and it is difficult to realize off-site processing. Off-line steelable low-E coated glass, using silicon nitride Si 3 N 4 As a protective layer, the film layer has a very low diffusion coefficient for oxygen, has good stability, and has a very low pinhole density. The silicon nitride film deposited by magnetron sputtering is dense, flat and has high hardness. It has a very strong blocking ability for mobile ions. It does not oxidize at 1200 ° C and has good corrosion resistance. Therefore, Si 3 N 4 The film layer is use...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantage that ordinary off-line low-emissivity coated glass cannot be heat-treated, and to provide an off-line heat-resistant glass that is strong enough to block infrared rays, has a good heat insulation effect, and can also realize off-site subsequent deep processing. Radiation-coated glass and manufacturing method thereof