| abstract |
The present invention provides a molding die for molding glass, which includes a base member, on which a first buffer layer and a protective film are provided in order. The first buffer layer is made of titanium or any material which is easily attacked by a first attack solution. The first attack solution includes hydrofluoric acid. The protective film is made of platinum-iridium alloy, iridium-rhenium alloy, tantalum-ruthenium alloy, molybdenum-ruthenium alloy, molybdenum-rhenium alloy, or molybdenum-hafnium alloy. The method of repairing the molding die includes using the first attack solution to remove the first buffer layer that causes no damage on the base member, and then operating a sputtering process to build a new first buffer layer and a new protective layer on the base member. |