ELECTRIC TEMPERING FURNACE
Grieve offers its No. 837 is a 1450 deg F electrically-heated tempering furnace, currently used for pre-heating prior to welding and various post-welding heat treatments, at a customer's facility.
Workspace dimensions of this furnace measure 60 in wide x 60 in deep x 60 in high. 180 kW installed in nickel chrome wire coils, supported by a stainless steel framework, provide heat to the load. A rear wall-mounted, heat-resisting alloy recirculating fan, powered by a 25 hp motor with V-belt drive and water-cooled bearings, is also on-board this unit.
8 in thick insulated walls comprise 3 in of 2,300 deg F ceramic fiber and 5 in block insulation, while 7 in floor insulation is made from 5 in of 2,300 deg F firebrick and 2 in of block insulation. No. 837 features an air-operated vertical lift door, as well as numerous safety and control components, including a programming and recording temperature recorder, SCR power controller, manual reset excess temperature controller with separate contactors and a recirculating blower airflow safety switch. www.grievecorp.com
