Heavy-duty box furnace suits heat treaters

Edited by the Manufacturingtalk editorial team Nov 24, 2003

Natural gas-heated, heavy-duty box furnace, suitable for heat treating metals, has four modulating natural gas burners with a floor-mounted combustion air blower on board.

No.

908 is a natural gas-heated, heavy-duty box furnace from Grieve, currently used at a commercial heat treater for various applications.

Maximum operating temperature is 2000degF and the workspace dimensions measure 48in W x 48in D x 48in H.

1,000,000 BTU/h are installed in four modulating natural gas burners with a floor-mounted combustion air blower onboard.

This Grieve furnace features 7in thick walls, comprising 5in of 2300degF firebrick and 2in of 1700degF ceramic fiber insulation, plus a 7in thick floor made from 4-1/2in of 2300degF firebrick and 2-1/2in of 1900degF block insulation.

Additionally, a firebrick plate hearth supported by firebrick piers is provided.

No.

908 also includes an air-operated vertical lift door and an automatic door switch to drive the burners to a low fire, whenever the door is opened.

This box furnace has a 3/16in thick steel plate reinforced shell, 1/2in thick steel front plate, brushed stainless steel control panel face and a firebrick doorsill to protect the furnace during loading.

All safety equipment required by IRI, FM and NFPA Standard 86 for gas-heated equipment is included.

No.

908 also features a digital indicating temperature controller and a manual reset excess temperature controller with separate contactors.