Fiber Drawing Furnace
Thermal Technology’s fiber drawing furnace is designed for operation to 2400°C with preforms up to 100 mm in diameter. It features a simplified long-life, high-purity graphite resistance element which delivers concentrated heat through a linear graphite tube (available with a split liner for altering the hot zone profile) that serves to protect the element and control inert gas flow. Encapsulated graphite felt insulation surrounds the heating element. Protective inert gas flow routing is simple and effective with top and bottom gas screens, top adjustable iris assembly and bottom water-cooled slide door assembly.
Safety interlocked top and bottom plugs permit convenient evacuation and backfilling of the furnace prior to operation. A 30 kVA power supply is also included, complete with a separately housed main transformer in a NEMA enclosure and 10 feet (or longer) of flexible power cables to couple the furnace to the transformer.
Fiber Drawing Furnace Operating Gas
The fiber drawing furnace MUST be operated with an inert gas (helium, argon or an argon/helium mixture). The gas must be dry and oxygen-free — less than 1 PPM water and oxygen. The use of Thermal Technology’s Gas Purification System (Model IGP) is recommended.
Recommended Accessories
Entry and Exit Ports
Top port is closed with a single sliding water-cooled door when there is no preform in the furnace. In open position, the door provides an opening of 2.5” (63mm). The bottom port is closed with dual sliding water-cooled doors with a minimum opening of 0.25” (6mm). Replaceable iris diaphragm assemblies are available as options for both the top and bottom ports. The irises have an adjustable range of 0.2” (5 mm) to 2.5” (63 mm).
Sincerely Plantautomation Technology
Regards,
Client Success Team (CRM),
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