No. 1042 is a 2000°F (1093°C), gas-fired, heavy-duty furnace from Grieve. Workspace dimensions of this furnace measure 30″ wide x 60″ deep x 30″ high. 750,000 BTU/HR are installed in four modulating natural gas burners with floor mounted combustion air blowers. Burners fire below hearth. Walls are 9″ thick, comprised of 5″ thick 2300°F ceramic fiber, 4″ 1900°F block insulation. Floor is 8-1/2″ thick, comprised of 4-1/2″ of 2300°F firebrick and 4″ of 1900°F block insulation.
This Grieve furnace has two lanes of roller rails supported by firebrick piers and an air-operated platform with roller rails to bridge from loading table to workspace. Other features include a 1/4″ plate steel exterior reinforced with structural steel, 1/2″ steel faceplate at doorway, air-operated vertical lift door, and a free-standing 390 CFM high pressure combustion blower.
Controls on the No. 1042 include a digital indicating temperature controller and manual reset excess temperature controller with separate contactors.