The toughening lehrs are designed in modules, all at a length of 2,25 m. Pennekamp has implemented many engineering details in order to increase performance and output at minimized energy consumptions.
Belt width of up to 3,0m
Gas or electrical heating (radiation or convection)
All heated zones are manufactured from heat resistant stainless steel / ceramics, incl. inner hoods as well as circulation fans and transport medium (belt or rolls).
Fully insolated lehr (all tunnel zones) with approx. 50mm of ceramic fiber and 300mm mineral wool)
Air circulation fan with direct shaft, no V-belt (maintenance free)
Chiller / Blow box system (shock cooling system with nozzle-type air outlet openings) in connection with the corresponding high performance fans
Automatic process control for the control and monitoring of temperatures
Electronic control of the internal air movements (draft system) to minimize the energy consumption (air in- and outlet dampers)
Optimal temperature distribution across lehr width