Carbolite Top Hat Furnaces

Industrial top hat furnace

• Atmosphere controlled bell furnace
• Designed for aluminising and coating of steel alloy components
• Complies with international aerospace standards
• Operating temperature : 1200°C
• Maximum process temperature 1150°C
• Uniform operating zone within the retort : 1500mm (diameter) x 1150mm (high)
• Maximum charge weight : 2500kg
• Power rating : 250kW
• Supplied with 2 walking hearths and an overhead furnace transfer system
• Fully programmable gas system with vacuum purge facilities

Industrial top hat aluminising furnace for aircraft components

• Supplied with 2 working hearths plus parking hearths for the retort and a separate parking hearth for the furnace
• The furnace incorporates the control within its framework, thus eliminating trailing cables
• A manually controlled overhead hoist transfers the furnace and retorts to their respective positions
• Fully compliant with international aerospace standards
• Designed to operate up to 1100°C under both hydrogen and inert atmospheres
• Power rating of 150kW - controlled over 3 zones with gas system controlled by PLC programmable logic

Industrial top hat furnace for annealing molybdenum sheets

• Top hat with retort, hoist and nitrogen/hydrogen atmosphere
• Maximum temperature: 1000°C (900°C inside retort)
• The furnace is rated to heat a maximum charge of 360kg of sheets, plus their support trays in the inconel retort to temperatures up to 900°C under atmosphere
• A full hydrogen/nitrogen gas safety system is provided to ensure nitrogen purge up to 750°C and change over to hydrogen gas for continuation of the process up to 900°C, reverting to nitrogen during cooling from 750°C
• Maximum power: 75kW

Industrial atmosphere top hat furnace

• For processing relay components
• Maximum operating temperature: 1150°C
• Temperature uniformity: +5°C between 900°C - 1150°C
• Usable retort volume: 0.4m³
• Spiral wire elements on 4 sides of chamber
• Maximum power: 72kW

Industrial top hat furnace for mold firing

• Designed as part of an ongoing project to increase the use of aluminium alloy castings by the aerospace industry
• Chamber dimensions : 1000mm x 1000mm x 1000mm
• Maximum charge weight : 450kg
• Free radiating resisance wire elements all four sides of the furnace
• As the furnace is used for both lost wax and plaster moulds, the equipment has to accommodate a wide range of operating temperatures : plaster block moulds (which can weigh up to 200kg) are typically dried at 270°C for up to 70 hours before being filled
• Ceramic shell moulds are also processed at low temperatures for burn off residual wax - they are then sintered at 1050°C
• Maximum power : 60kW
• Controls located in a separate console