AvaC™ is a proven process for vacuum carburizing with acetylene. One of the most important advantages of this process is high carbon availability.
The AvaC™ process involves alternate injection of acetylene (boost) and a neutral gas like nitrogen for diffusion. During boost injection, acetylene will only dissociate in contact with metallic surfaces, thus allowing for uniform carburizing. At the same time, it almost totally eliminates the soot and tar formation problem known to occur from propane.