Vacuum melting furnace for infrared glass and melting system and method thereof
US9302927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2014 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Aug 29, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2201/60
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A vacuum melting furnace for infrared glass, includes an upper furnace body and a lower furnace body that can be connected with each other or isolated from each other. Vacuum melting of the infrared glass is achieved in the upper furnace body wherein the influence of water in the environment is eliminated. The vacuum negative pressure environments can promote separation of hydroxyl in the structure, which achieves removing of hydroxyl in the glass, and then discharging of the molten infrared glass is conducted at atmospheric pressure in the lower furnace body. By using the vacuum melting furnace for infrared glass, infrared glass with good spectrum transmission performance can be obtained with improved property stability and optical homogeneity, which facilitates the preparation and molding of large sized and special-shaped infrared glass products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.