Heating and Tempering Furnaces

Heating and Tempering Furnaces Air circulation and tempering furnaces EFU series
Temperature: 500 degrees Celsius - 650 degrees Celsius - 750 degrees Celsius Universal use up to 750 degrees Celsius
The air circulation and tempering furnace of the EFU series are air circulating furnaces for heat treatment and tempering processes. The nominal temperatures are 500 degrees Celsius, 650 degrees Celsius or 750 degrees Celsius depending on the model in question. The furnaces are double-walled with an insulation material of high-quality mineral fibers. The working chamber is made of heat-resistant material and is welded tight. Air is recirculated and heated using an electrical resistance heater. The circulated air is routed horizontally through the working chamber.
Application
The furnaces are suitable for almost all heat treatment processes, e.g. Tempering and hardening of steel Aging and stress-relieving of metals Solution annealing of light metals Preheating of metals for the following manufacturing processes Sintering of plastic material based on polytetrafluoroethylene basis (PTFE) Burning-in of special coating materials after drying Burning-off of organic residues on metal parts
Advantages
The advantages of the EFU series are high functionality, reliability and durability. The furnaces are supplied ready for installation thus avoiding long commissioning times. Further advantages are:
	Cost-effective High air rate: The material soon reaches the required temperature. Short heating and cooling rates thanks to insulation material with low thermal capacity. Reduced external wall temperatures thanks to high-quality insulation systems. Flexible Extensive range of accessories and equipment enable universal use. Ergonomic Low noise emissions. Operating and maintenance-friendly concept. Safe High operational safety thanks to swing mechanism of the test space door: Hot side facing away from the operator. Adjustable safety cut-out against excess temperature with selection limiter (Protection Class 2)
Control system
All equipment necessary for regulating abd controlling are in the switch cabinet. The controller used is a microprocessor-controlled PID controller with digital display. The semi-conductor relay is silent running without mechanical wear.
Accessories	Options
Supports and shelves adjustable in height Grates with high loadability Charging trolley, ancillary trolley Control for inert gas operation Automatic switches	Program controller TC Control Fresh air fans in conjunction with a throttle valve for quicker cooling and discharging vapors* Shelves of stainless steel
*Vapors escape at low temperatures so that fresh air has to be used for a short period of time; at 100% fresh air operation the nominal temperature is not reached.