4 results about "Glass manufacturing" patented technology

A glass manufacturing system and method are described herein that use a forming apparatus (isopipe) made from or at least coated with a magnesium aluminate spinel material which is a chemically stable and compatible refractory material when used for forming an alkali-containing glass sheet.

The invention provides easily founded lithia-alumina-silica glass suitable for a low temperature type ion exchange process and chemical toughening. The lithia-alumina-silica glass comprises the following components in percentage by weight: 55 to 61.5 percent of SiO2, 5 to 13 percent of Al2O3, 13 to 20 percent of Na2O, 3.5 to 8 percent of K2O, 0 to 5 percent of ZnO, 0 to 8 percent of MgO, 0.5 to 5 percent of Li2O, and 0 to 1.5 percent of Sb2O. Through the reasonable setting of the components, the invention reduces the glass manufacturing difficulty, obviously decreases the glass founding temperature, and facilitates the energy consumption reduction and finished product yield improvement. Under the conditions of the toughening temperature of 380 to 500 DEG C and the toughening time of 4 to 12 hours, the surface bearing stress of the obtained glass reaches 340 to 700 MPa, the depth of the stressed layer reaches 20 to 60mu m, and the glass is reinforced and has high shock resistance.

The invention discloses a method for changing platinum channel convection in ultrathin flexible glass manufacturing. The main material of a platinum channel is platinum or platinum-rhodium alloy, the platinum and the platinum-rhodium alloy are greatly oxidized in a high-temperature and high-humidity environment, and a large number of oxide layers are mainly formed at a liquid level line part and a free space part, the oxide layers would be in a saturated state after a long time, the oxide layers will be slowly separated out from the glass. The method for changing convection in ultrathin flexible glass(UTG) manufacturing, and a method and a process capable of changing the liquid level line oxidelayers of the platinum channel in time are designed, the formed platinum oxide layers are changed, the convection is changed at one time, and the occurrence of platinum type defects after long-term operation of the platinum channel is reduced.