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Wednesday, September 19, 2007 - 2:00 PM

Microwave Processing and Heat Treating of Metals

E. Ripley, Y-12 National Security Complex, Oak Ridge, TN

The Oak Ridge Y-12 Plant has developed a number of newly patented techniques for heat treating using microwave energy.  This presentation will focus on microwave heat treating of metals, and will discuss several methods including salt bath processing, processing in a granular media and/or fluidized bed, as well as others.  

 

This technology merges well known and accepted methods of heat treating metals, such as salt bath processing with previously unavailable process flexibility.  Unique features include being able to quickly change types of salt used, to turn off the process when not needed, the ability to change the salt bath capacity  based on part size or shape, and the ability to quickly start up the process.  The uses and advantages of these applications will be discussed.

 

Microwave heat treating processes can be custom tailored to a wide variety of standard and high tech applications, and benefits include, energy savings, ease of use, consistency of product quality.  In addition, a wide variety of surface treatments such as carburizing, carbonitriding chromizing, and boronizing, can be performed as part of the heat treating process. 

 

By varying the processing environments you can process reactive or traditional metals.  These processes can be automated into a continuous or batch process. In some cases the design of the equipment can allow these technologies to be added to a facility in such a way that the transition can be invisible to the floor level worker.  Specific applications and processes requirements are limited only by the imagination.


Summary: The Oak Ridge Y-12 Plant has been using microwave energy to melt, cast and processing metals for over a decade. This presentation will focus on microwave heat treating of metals. The types of methods used include salt bath processing, processing in a granular media and/or fluidized bed, as well as other methods. The uses and advantages of these methods will be discussed, and results of experiments will be compared. These recently patented microwave heat treating processes can be custom tailored to a wide variety of standard and high tech applications, and benefits include, energy savings, ease of use, consistency of product quality, and a wide variety of surface treatments which can be performed as part of the heat treating process.