Clam Shell Furnace
This furnace is used for heat treatment and homogenisation of steel ingots with a total charge weight of up to 40 tonnes.
The furnace operates in the range 400ºC to 1250ºC and temperature uniformity meets Rolls Royce Aerospace Specification RPS953.
The furnace is equipped with high velocity hot air burners and recuperators which deliver preheated air at up to 550ºC. The resulting fuel saving is 40% compared to a cold air system. The cover is raised through 90º using hydraulic cylinders, to enable the ingots to be removed using the overhead crane.
This furnace was supplied to a world leading UK producer of high-nickel, high-performance alloys as part of a larger project involving new equipment and the refurbishment of existing plant.
The furnace uses high velocity hot air natural gas burners and separate recuperators at hearth level to enable uniform heating of the furnace load and lower maintenance compared to other hot air burner systems.
All instrumentation used on the furnace was supplied with serial communications to suit the customers existing SCADA system.
Maximium Furnace Load: 17 tonnes
Temperature Uniformity: RPS953 in the range 950ºC to 1250ºC
Control Modes: Fixed Air & Fuel Modulation, Stoichiometric Ratio, Reducing Atmoshpere, Rapid Cooling
Expected Fuel Savings: 35% over a cold air system operating under the same conditions
Copyright Northern Combustion Systems Ltd 2012