Furnaces
   

Air Recirculating Chamber Furnaces 750°C
Both models in the ARF range have a chamber fitted with a robust stainless steel liner, enabling bulky loads to be treated. Optimum heat transfer, reduced heating times and maximum temperature uniformity are provided by a fan which circulates the air within the chamber. The fan and airguide system provide continuous movement of air around the workpiece.

Heating is provided by mineral insulated sheathed elements, which are fully isolated from the liner. A type 'K' thermocouple is incorporated for maximum life and stability. This range of furnaces is particularly suitable for a wide range of low temperature heat treatment applications, such as:

  • Stress relieving
  • Melting low temperature alloys
  • Thermal ageing
  • Annealing
  • Tempering

AF/SAF Ashing Furnaces 1100°C
A choice of two models is available. The AF 11/6 is an economy ashing furnace with a traditional muffle element. It meets the requirement for a low cost unit which will allow materials to be burnt rapidly at closely controlled temperatures. The SAF 11/1 is a more robust traditionally built muffle ashing furnace capable of accepting up to 15 crucibles up to 50mm diameter. A chimney is fitted on both models as standard.

EF Laboratory Chamber Furnaces 1100°C
An economical, rapid heating and lightweight chamber/box furnace incorporating a one-piece low thermal mass heating element for general laboratory use. The drop down door can be used as a shelf. If your process generates significant amounts of corrosive fumes.

ECF General Purpose Laboratory Chamber Furnaces 1200°C
A robust range of laboratory chamber/box furnaces, providing an excellent level of versatility without compromising quality, safety or reliability. All units in the ECF range have a maximum operating temperature of 1200°C. Maximum temperature uniformity is provided by two side-wall heating elements manufactured from high temperature resistance wire spirals embedded into cast refractory slabs. An exhaust chimney is fitted as standard. The insulated door opens upwards and outwards keeping the hot face insulation away from the operator. A door switch isolates power from the heating elements whenever the door is opened for maximum operator safety. The use of double skin construction allows natural air convection to maintain a cool outer case.

A variety of optional metal retorts are available for use with this range of furnaces. This type of retort is generally used to cater for the following process conditions:

  • To maintain controlled atmospheres within the heated chamber;
  • To protect the heating elements and insulation from chemical attack by aggressive volatiles given off by fluxes acids, etc.
 

Note: Ceramic liners may also be used for this particular application.

The Four Sided Heating option upgrades the standard two sided heating to four sided heating and is recommended in the following circumstances:

  • For use with metal retorts and ceramic liners
  • To improve chamber temperature uniformity to meet specific process requirements
  • To uprate the furnace power to cope with large loads

The ECF chamber furnaces can be modified to incorporate an air exchange system, including a larger chimney, which makes them suitable for the small scale ashing of a wide variety of materials (this option can only be fitted at the time of order).

AWF Laboratory Chamber Furnaces 1200°C and 1300°C
A range of high specification laboratory chamber/box furnaces developed to meet rigorous standards of quality, safety and reliability. These stylish furnaces provide rapid heating and cooling rates, exceptional temperature uniformity and low power consumption.

The AWF models are available with a maximum operating temperature of 1200°C and 1300°C. Rapid heating and maximum temperature uniformity are provided by two side panel heating elements of ceramic fibre, each containing wire spirals freely radiating from sinusoidal grooves.

The insulated door opens upwards and outwards, keeping the hot face insulation away from the operator. A door switch isolates power from the heating elements whenever the door is opened for maximum operator safety. The use of double skin construction allows natural air convection to maintain a cool outer case.

UAF Laboratory Chamber Furnaces 1400°C, 1500°C and 1600°C
A range of advanced high temperature general purpose laboratory chamber furnaces for use in both laboratory and light production applications. These models have maximum operating temperatures of 1400°C, 1500°C and 1600°C.

Low thermal mass ceramic fibre insulation and silicon carbide elements, which radiate heat directly onto the workpiece, provide rapid heating and cooling and low running costs. The insulated door opens upwards and outwards keeping the hot face insulation away from the operator. A door switch isolates power from the heating elements whenever the door is opened for maximum operator safety. The use of double skin construction allows natural air convection to maintain a cool outer case. A robust silicon carbide hearth tile is fitted as standard.

UAF High Temperature Laboratory Chamber Furnaces 1700°C & 1800°C
These models have a maximum operating temperature of 1700°C and 1800°C. Models UAF 17/4 and 18/5 are bench mounted, whilst all other models are floor standing with lockable wheels as an optional extra.

Ultra-high purity alumina low thermal mass insulation and vertically suspended Kanthal Super heating elements, which radiate heat directly onto the workpiece, provide rapid heating and cooling and low running costs. These models offer advanced chamber construction with modular roof system and removable hearth.

The insulated door opens upwards and outwards, keeping the hot face insulation away from the operator. An electrically operated door is standard on the UAF 17/27 and UAF 18/27 models. A key switch is provided to prevent unauthorised opening. A door switch isolates power from the heating elements whenever the door is opened for maximum operator safety. Over-temperature protection is fitted as standard.

EHF Elevator Hearth Bottom Loading Furnaces 1700°C and 1800°C
A range of elevator hearth furnaces for operation in air or inert gas atmospheres. The range is available with maximum operating temperatures of 1700°C and 1800°C with capacities of 3.4 and 7.9 litres. Optimum temperature uniformity is obtained by the inclusion of molybdenum disilicide heating elements which are positioned around the walls of the chamber ensuring uniform heating of the sample. A combination of dense refractory brick hot face insulation and a secondary low thermal mass layer of insulation provides a robust chamber with an efficient utilisation of power.

The electrically operated elevator hearth ensures operator safety and prevents direct radiation of heat from the chamber walls. It also ensures smooth loading/unloading of the workpiece/crucible and allows both heavy and delicate loads to be handled easily. Over-temperature protection is fitted as standard. The furnace can be adapted to accommodate an atmosphere other than air, by the use of an inverted alumina crucible in a groove in the hearth. Ideal for: melting of high purity glass, ceramic sintering & firing, thermal shock testing & firing in maintained atmospheres.

 
 
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