Home/backstreaming/Page 2

Vacuum Furnace End-User Q&A Community Latest Questions

Answer it Forward Challenge
  • 0
Answer it Forward Challenge
Asked: July 26, 2020In:
  • 0

backstreaming
  1. Answer it Forward Challenge Official Account of VacuumFurnaces.com
    This answer was edited.

    Backstreaming in a vacuum occurs when oil or other contaminants from the vacuum pump migrate back into the furnace chamber, potentially contaminating the parts or processes. Combining the following methods can greatly reduce or eliminate backstreaming, ensuring a cleaner vacuum environment for sensiRead more

    Backstreaming in a vacuum occurs when oil or other contaminants from the vacuum pump migrate back into the furnace chamber, potentially contaminating the parts or processes. Combining the following methods can greatly reduce or eliminate backstreaming, ensuring a cleaner vacuum environment for sensitive processes like heat treating:

    1. Use Oil-Free Pumps.

    2. Cold Traps and Cryogenic Traps.

    3. Baffles and Filters.

    4. Use Proper Pumping Procedures.

    5. Regular Maintenance.

    6. Oil Mist Eliminators.

    7. Operating Temperature Control.

    See less
    • 0
Answer it Forward Challenge
  • 1
Answer it Forward Challenge
Asked: July 24, 2020In:
  • 1

backstreaming
  1. Greg Kimble

    High cross-over pressures when transitioning from mechanical pumps to diffusion. Contaminated diffusion pump oil. Poor performance of the holding pump causing high pressures in the diffusion pump. Leaks in the diffusion pump and/or holding pump and associated piping. Poor performance of the backingRead more

    High cross-over pressures when transitioning from mechanical pumps to diffusion.

    Contaminated diffusion pump oil.

    Poor performance of the holding pump causing high pressures in the diffusion pump.

    Leaks in the diffusion pump and/or holding pump and associated piping.

    Poor performance of the backing pumps causing high pressures

    Improper sequencing of the valving

    See less
    • 0
Answer it Forward Challenge
  • 0
Answer it Forward Challenge
Asked: July 24, 2020In:
  • 0

backstreamingdiffusion pump oil
  1. VacuumFurnaces.com Answers
    This answer was edited.

    Backstreaming of diffusion pump oil is a concern in vacuum systems where a diffusion pump is used to achieve high vacuum. Backstreaming is the process where the pump oil flows back into the vacuum chamber, which can contaminate the chamber and the processes taking place within it. Here are the mainRead more

    Backstreaming of diffusion pump oil is a concern in vacuum systems where a diffusion pump is used to achieve high vacuum. Backstreaming is the process where the pump oil flows back into the vacuum chamber, which can contaminate the chamber and the processes taking place within it.

    Here are the main considerations on how to avoid backstreaming of diffusion pump oil:

    1. Use Baffles.

    2. Proper Pump Operation.

    3. Maintenance.

    4. Quality of Oil.

    5. Backing Pumps.

    6. Positioning.

    7. Isolation Valves.

    8. Nitrogen Purge.

    9. Check Valves.

    Each vacuum system may have specific needs, so it is essential to consult the diffusion pump’s manual or a vacuum technology specialist for guidance tailored to your particular setup. If you are dealing with a technical issue or system design, it might be helpful to review the documentation for your specific equipment or contact the manufacturer for advice.

    See less
    • 0