Nozzles for the production of wool and fibers

This content has been provided by Plansee.

Glass wool and glass fibers are produced at temperatures of over 1600°C (2912°F). During the production process, the material is melted and the liquid melt passes through outflow nozzles made of molybdenum or tungsten. Subsequently, the melt is then either blown or spun to create the finished product.

Dosing and centering the molten stream as precisely as possible is crucial if a high-quality finished product is to be produced. Plansee's temperature-resistant molybdenum and tungsten nozzles make that possible. With their iridium and rhenium inserts excellent corrosion resistance with a long service life is combined in these nozzles. To achieve an even longer service life, a special technology for joining the small precious metal tubes to the body of the nozzle was developed by Plansee.

In addition to molybdenum and tungsten outflow nozzles, Plansee also fabricates suitable molybdenum glass melting electrodes, nozzle holders, flow needles, extension tubes, furnace components and, of course, tailor-made products made from molybdenum, tungsten, tantalum, chromium and niobium to meet specific needs of the customer.

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Article by Plansee

Plansee is entirely focused on producing, processing and marketing refractory metals such as tungsten, tantalum and molybdenum. These are the most heat-resistant metals. With their high melting point, they are suitable for use as heaters in high-temperature furnaces or as incandescent filaments in lamps. In electrical switch contacts, they are valuable because of their excellent electrical and thermal conductivity. In electrically conductive film in flat screens and solar cells, our alloys are remarkable for their low coefficient thermal of expansion. In this way, they bring astonishingly sharp image quality to our living rooms and provide us with clean energy.

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