Keywords
Citation
(1999), "Rotary hearth furnace", Aircraft Engineering and Aerospace Technology, Vol. 71 No. 2. https://doi.org/10.1108/aeat.1999.12771bad.012
Publisher
:Emerald Group Publishing Limited
Copyright © 1999, MCB UP Limited
Rotary hearth furnace
Rotary hearth furnace
Keywords Blades, EFCO, Furnaces
EFCO has just commissioned a second electrically heated rotary hearth furnace for a leading manufacture of turbine blades (Plate 7).
The latest furnace has a three metre diameter rotating hearth subdivided into several thyristor controlled heating zones producing a temperature uniformity of ±10°C over 800° to 1,200°C operating range. A nitrogen atmosphere is maintained within the workchamber by using a Dryanton oxygen probe and control instrument. The furnace doors are pneumatically operated by a foot pedal leaving the operator's hands free to load and unload components.
Plate 7 EFCO rotary hearth furnace
Several special features have been incorporated including: transformer fed heating elements located in the roof for maximum operator safety; NiCr segments on the hearth reversible for long life and constructional features which minimise trapping of components between furnace brickwork and rotating turntable.
Further details available from EFCO Ltd, 29 Auro Way, Brooklands Business Park, Weybridge, Surrey KT13 0YZ. Tel: +44 (0) 1932 350534.