Your browser does not support JavaScript! Low Pressure Carburizing in new vacuum pit furnace by SECO/WARWICK


How to carburize
thick layers in a vacuum
pit furnace?

1. Collect the parts which you want to carburize on a given layer thickness

  • Thoroughly clean the parts and remove any residue left after machining.
  • Estimate the surface area of your parts with the help of SECO/WARWICK’s user-friendly software.
  • Place the parts on a dedicated fixture; make sure that the fixture is ready to withstand elevated temperatures.

2. Prepare your furnace

  • Make sure that the furnace has been well maintained in accordance with the instruction manual.
  • Ensure utilities are connected (No endogas generator needed; Pit uses only acetylene mixture).
  • Choose your ideal vacuum carburizing recipe to achieve maximum savings on process time.
  • Start your furnace immediately. No conditioning necessary!

3. Load the fixture with the parts

  • Open the furnace (mind the temperature if the furnace is opened in hot conditions).
  • Use the overhead crane to load the fixture with the parts into the furnace (this process can be automated).
  • Close the furnace.

4. Start the process

  • Start the process using either the furnace’s built-in HMI or a remote SCADA control system.
  • Control system of the vacuum pit furnace archives thousands of recipes in the database with immediate access.

5. Observe and control the furnace and the process

  • While the furnace is fully automatic, it is advisable to periodically monitor conditions using the HMI or remote control.
  • Preventive maintenance features provide insight into every key sub-assembly of the furnace.
  • Optional cloud data storage provides limitless archiving possibilities.

6. Open the furnace and quench the parts

  • Open the furnace (caution: 1050°C is really hot).
  • Remove the fixture with parts using the overhead crane and place it in a quench bath (this can be automated); alternately, leave them in the Pit to cool using its built-in quenching system.
  • Load the next batch or shut down the furnace. No constant temperature conditioning necessary.

7. Wash the parts

  • After the quenching process, place the fixture with the parts in a washing machine.

8. Check the results of the process

  • Check if the obtained results correspond with your requirements.
  • Admire uniform effective case depth [ECD] and the fact that there is no intergranular oxidation [IGO] in your parts.
  • Calculate your savings gained in comparison with traditional atmosphere pit carburizing furnace.

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