Aerospace manufacturer receives bench-mounted, multipurpose box furnaces

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L&L Special Furnace’s GS2026 box furnace will be used for general heat treatment, laboratory work, ceramics, and other thermal applications. (Courtesy: L&L Special Furnace Co., Inc.)

L&L Special Furnace Co., Inc. has delivered three multipurpose GS2026 bench-mounted box furnaces used to test high-temperature aerospace fasteners.

The fastener manufacturer in Pennsylvania now has five GS series furnaces at its facility.

The new model GS2026 has internal dimensions of 18” wide by 12” high by 24” deep. It has an operating voltage of 208, 220, and 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 control is an industrial control system that includes a Eurotherm temperature control, overtemperature protection, and a recirculation fan for uniformity.

The furnace is constructed from 3-inch lightweight IFB firebrick, backed up with two inches of board insulation. The elements are supported in hard ceramic element holders. These provide long element life and are easily replaced.

The elements are located on both sides and at the top and bottom, which enables equal heat distribution from all sides. This element distribution has proven with the industrial control option to achieve a uniformity gradient of ±10°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 some units in stock available for same-day shipment. Units with control upgrade or fan option usually ship within one to three weeks.

L&L offers the GS2026 as a choice for general-purpose heat treating as well as high-tech industrial applications.

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