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PLANTS, EVAPORATORS AND AUTOMATION PROCESSES
RETORT AND CHAMBER FURNACES FOR CONTROLLED ATMOSPHERE






ROHDE furnaces are designed according to customer needs. Energy consumption is very low and heat-up and cool-down times are very short due to good insulation and extremely low heat storage. The temperature constancy values inside the retort are optimal.

  • We offer a variety of sizes from small laboratory furnaces to capacious production lines
  • Retort diameters from 300 to 2500 mm (other sizes available on request)
  • Retort depths / -lengths 400 to 5000 mm (other sizes available on request)
  • Working capacity temperatures up to 1150°C. Special equipment for higher temperatures is available on request
  • Quenching options: oil, water, salt bath
  • Quick gas cooling with external heat exchanger, suitable also for hydrogen
  • Process visualisation through program controllers and control systems
  • Software development for nitriding and gas-carburising processes
  • Vacuum pumps for evacuation of the retort before the start of the treatment
  • Gas and electrical heating


  • TREATMENTS
  • Gas-Carburising
  • Annealing
  • Tempering
  • Brazing
  • Nitriding
  • Nitro-Carburising
  • Sintering
  • Special Processes

  • GAS
  • Nitrogen
  • Argon
  • Forming Gas
  • Ammonia
  • Hydrogen
  • Endogas
  • Methanol
  • Water Vapour


  • BRINE – EVAPORATOR SYSTEM TYPE VH FOR AS-SALTS


    There are different ways to retrieve the quenching salt, which is recovered by ROHDE-Evaporator-Systems. Therefore, the individual circumstances and preferences of the customers have to be considered.

    The following possibilities are available:
  • Salt exhaust through a non-heated pipe – into a collecting tray located under the evaporator
  • Heated pipe in order to reintroduce the salt directly in the bath


  • FEATURES OF THE EVAPORATOR - SYSTEM
  • 100 % water-free, liquid and clean quench salt
  • No waste management costs due to reusability in salt bath
  • No special pumps needed, salt drains off freely
  • No waste management costs as condensed water can be reused for washing
  • No air pollution
  • Automatic 24/ 7 continuous treatment
  • Re-use of water no containing salt
  • Low energy consumption due to energy recovery
  • AS salt recovery in liquid, solid or granular salt
  • Standard models for 35 litres/hour and 50 litres/hour


  • FURTHER OPTIONAL ACCESSORIES
  • heated discharge pipe
  • bigger condensate-tank
  • condensate-pump
  • salt collecting trays
  • door switch
  • integration into customer's automation system through potential-free contacts


  • PROCESS VISUALIZATION AND CONTROL


    We utilise all common program controllers for the automated and reproducible run of different processes. We are not bound to any defined product. Depending on the existing infrastructure and the already introduced systems we can fulfil your individual demands State-of-the-art controllers naturally enable us to carry out a remote maintenance at your equipment.

    We will pleased to send you a quote to update and revise controllers at your existing equipment according to state-of-the-art technology:
  • Program controllers
  • SIEMENS S7
  • Display
  • Integration
  • Industrial Ethernet
  • Remote maintenance via modem or VPN-connection .
  • through Internet
  • Process control systems
  • Maintenance
  • Update
  • Retrofit


  • ROHDE ONLINE DIFFUSION SYSTEMS FOR GAS-NITRIDING AND NITRO-CARBURISING
    The software we have developed for online diffusion can be utilised for standard gas carburising processes as well as for carbo- nitriding processes.
    For any carburising depths between 0,2 – 10 mm the program initially calculates on the basis of the material a proposition for a treatment program and predicts the duration of the complete treatment.

    The program then suggests a multistage process whereas in the first stage the C-level is calculated automatically depending on the carbon activity (carburising near smoke limitation). In the balancing stage of the diffusion the C-level is automatically adjusted in order to achieve the desired C-concentration in the surface.


    ROHDE CONTROL SYSTEM FOR GAS-NITRIDING AND NITRO-CARBURISING PROCESSES
    The core of the system is a sensor developed to supervise the ammonia decomposition due to a thermodinamic unbalance.

    The system enables us to achieve reproducibly the requested nitriding depths and at the same time to distinguish between gamma and epsilon-layers. Furthermore our control system is able to control nitriding depth and compound layer.
    Metalconsulting S.a.s. di Paolo Fossati & C. - V.le Susani, 52 - 20844 Triuggio (MB)
    tel: 0362-918394 - fax: 0362-978328 - P. Iva 00782180962, info