L&L Special Furnace Co. Ships Box Furnace
L&L Special Furnace Co., Inc. has shipped a second bench-mounted box furnace to a worldwide leading manufacturer of high-purity fused silica and high-end ceramic products. These materials are used in the semiconductor and photonics industry as well as many other ceramic and composite industries worldwide. The furnaces are part of the research and development department and are an important component of the testing and quality control department.
The Model GS1714 has internal dimensions of 17” wide by 12” high by 14-1/2” deep. It has an operating voltage of 208, 220, 240 volts single phase, 60 or 50 hertz. Included is a spring-assist vertical lift door that allows for effortless loading and unloading, even at high temperatures. The furnace is equipped with a Bartlett program control and overtemp with an option for a Eurotherm 1/16 DIN microprocessor-based program control with solid-state relays. This allows for adjustable PID logic and finer temperature control around setpoint.
The furnace is constructed from 3” lightweight IFB firebrick, backed up with 2” of board insulation. The elements are supported in hard ceramic element holders. This allows for long element life and they are easily replaced. The elements are located on both sides as well as the top and bottom. This allows for equal heat distribution from all sides, and with the industrial control option, has proven to achieve a uniformity gradient of ±7.5°F.
Standard units include a sheathed thermocouple, a slot in the door for access into the furnace, a bench-mounted, powder-coated CNC machined case, ceramic hearth plate with standoffs, a door limit switch that turns the power to the elements off if the door is opened, an on/off toggle switch with control fusing, and a power plug. An optional angle iron stand and vent kit are available.
The furnace is shipped by common carrier on a skidded carton with foam-in-place packaging. L&L has standard units in stock available for same-day shipment. Units with control upgrade or fan option usually ship within one to two weeks. L&L currently has over 500 units in service. This makes the L&L GS1714 a great choice for general-purpose heat treating as well as high tech industrial applications.
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