Bogie hearth furnaces

Bogie hearth furnaces represent a special form of chamber furnace and are particularly well-suited to changing part dimensions. Here, the furnace floor is generally moved out of the furnace on rails. The batch is set up and moved into the furnace. This enables batches to be changed in short times and residual heat to be used in an energy-saving way.

With our bogie hearth furnaces, it is possible to process a batch by crane, by forklift or fully automated. On request the bogie hearth furnace can also be installed under the flooring. The forwarding of the batch, for example, for quenching, can be fully automated. In doing so, a variety of construction forms are possible in order to ensure quick quenching with empty times as low as possible. Do not hesitate to contact us!

The furnace door can be mounted directly to the bogie hearth or as a portal. Further, a version with a dual bogie hearth is possible which enables the furnace to be filled from both sides. This ensures that the lowest possible empty times can be implemented.

Optionally, in internal pressure stamp can be installed for tempering under forced shaping. 

Very versatile in use

This type of construction represents a simple type of construction, but one that has been tried and tested over many years, and in which a variety of thermal treatments can be implemented. The application scope includes the tempering or curing, the tempering and age hardening of non-ferrous metals and plastics as well as the annealing, hardening and gas carburising of iron and steel.

Size of utilisation space

The utilisation spaces can be implemented, in accordance with customer requirements, as 0.5m³ for small chamber and laboratory furnaces and up to 100m³ for large systems.  

Type of construction

The furnace housing is constructed as a stable and durable steel construction and can be insulated according to customer requirement in an energy-saving solid construction method or in a lightweight construction method. 

Type of heating

Nolzen furnaces can be heated by gas or electricity. For electrical heating, the generous arrangement of heating elements ensures an over surface load and thus a higher lifetime of the heating. Gas-heating is carried out using only German branded products. We are happy to coordinate the configuration of the industrial furnace with you!

Air flow

For industrial furnaces with temperature ranges of up to 900°, a targeted controlled air flow created by air baffles achieves a precise temperature distribution of +/- 3°C in the furnace with the previously precisely warmed air. The products to be treated are thus heated very evenly.

As of 900°C, no air circulation is used. The even temperature distribution is ensured by the heating elements attached on multiple sides.

Switching cabinet and regulation technology

The execution of the switching cabinet and regulation technology is implemented using only German branded products. The programming is carried out in-house in full.

The procedure can be freely programmed with the use of programmable logic controllers (PLC) and programming rules.

Emulsion after-burning

In the heating of emulsion-coated workpieces, an oil vapour is generated inside the utilisation chamber. A cleaning of this process exhaust air can be implemented by way of after-burning. 

Optionally, waste heat recovery may also be installed.

Waste heat recovery

It often makes sense to install waste heat recovery in order to make use of the heat generated by the process, for example, for pre-heating other workpieces. We will be happy to work with you to determine which waste heat recovery system is right for you.