Posted in | Materials Processing

Lucifer Furnaces Ships 7000AM Alloy Muffle Furnace

Lucifer Furnaces has recently shipped a 7000AM Alloy Muffle Furnace. This particular furnace will be used with a nitrogen atmosphere to heat treat M4 electrical steel.

Model 7000AM is an electrically heated bench furnace currently in operation for annealing M4 electrical steel used in the construction of protective relays and switches. Rated for operation to 2050°F, the 10" x 10" x 12" workspace is lined with a heavy gauge flat wall alloy muffle for use with a nitrogen atmosphere.

The muffle separates the chamber refractory and heating elements from the workload and inert protective atmosphere to achieve a lower dew point which minimizes scale and oxidation on the parts being treated. Heating element panels, located on the side walls and below the hearth, are designed with coiled Kanthal wire in V grooves to provide maximum radiation and fast heat response time.

The 7000AM unit is built with a silicon carbide hearth plate to fully support the muffle and conduct and transmit heat from the floor elements providing uniform temperature. Thick 6 ½ inches of multilayered insulating firebrick and mineral wool block insure high energy efficiency with low outside surface temperature. A double pivot, insulated, horizontal swing door with a ceramic gasket provides a complete seal against the muffle flange.

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