The production of glass is a global business that has manufacturing sites in most countries around the world. The industry itself is split into four type of products: fiber, container, quartz and float glass.The process of production for all four types require high temperatures in a corrosive environment. Thus, Molybdenum and Tungsten make the most stable furnaces electrodes and melting architecture due to their corrosion resistance and thermal stablity. For container glass and glass fibre production molybdenum glass melting electrodes are used, there are other uses such as furnace liners, hearth plates, and stirrers.
Glass Melting Electrodes (GME’s)
The bars are threaded and joined together to be pushed into the furnace. The electrodes are either mounted on the top, side, or bottom depending on the type of furnace. However top mounted electrodes wear much quicker due to oxidation, and sometimes require coating. Since Molybdenum is extremely stable at high temperatures and is resistant to corrosion, they are the material of choice for container glass and fiber glass manufacturing. We are able to offer coating and specialist alloys for longevity and improved performance.
Quartz Melting Furnace parts
In high temperature and optically pure applications, fused quartz is required. They are used most often as the envelope in Halogen lamps, heating elements, and large diameter furnace tubes for semiconductors because they are able to withstand high temperatures. In order to make fused quartz, you must fill a crucible with quartz stand and melt it at 2000 °C. The result is then taken through an orifice plate to either form rods, plates, or through a mandrel to make tubes. Since Tungsten can withstand high temperatures, they are used for drawing components, heating elements, forging mandrel shafts, and making crucibles.
Glass Melting Tank Shielding
Large glass melting tanks can hold up to 1000 MT and are used in volume glass production, Refractory bricks line the melt tank as the insulating surface but depending on the glass type and furnace design, the brick material may be corroded by the chemical reactions during the process. To combat this, the melt tanks are sometimes equipped with molybdenum, especially in areas of high flow. This will improve the longevity of the furnace while also avoiding high costs in the future.