Gears - SAE 4118


Fuel Injector Nozzles - 16MnCr5


Manual Gear Boxes


Pinions - SAE 8620


Shafts - SAE 9310


Sleeves - SAE 5115

Low Pressure Carburizing (aka, LPC or Vacuum Carburizing)

Vacuum Carburizing is the proven method of choice to provide pristine results due in large part to the absence of all contaminants in the process sequence.  

Vacuum carburizing benefits include:

  • Precise process repeatability via simulation programs and automated controls.
  • Manufacturing integration friendly equipment.
  • Ergonomically superior to atmosphere based processing
  • Faster processing is possible at higher temperatures and due to the higher carbon content at the part surface during processing.
  • Fully automated processes provide uniform results from load to load.
  • Lower energy consumption due in part to the ability to shut down when not required.
  • Significantly "greener" process.  On the order of 300:1 ratio for carbon output of atmosphere processing to vacuum processing
More reasons are found everyday for vacuum carburizing in place of atmosphere based processes.
  • More uniform case depth
  • Zero surface oxidation (inter-granular oxidation or IGO)
  • Improved fatigue resistance
  • Faster processing possibilities
  • Significant reduction in process gas consumption
  • Significant reduction in emissions
  • No open flames or flame screens required
  • Part distortion control helps eliminate post heat treat operations

Now, even large transmission components are under consideration for acetylene based vacuum carburizing. See our recent technical paper on the topic. It can be found at: http://www.ald-holcroft.com/Downloads.aspx. 

See this link for information concerning LPCn or Low Pressure Carbo-Nitriding.  

 

 


 

 

 

 

 

 
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