The process can be automatic and has to be executed in a vacuum environment as the electron beam dissipates readily in air. The combination of the coil and work piece can be considered like a transformer, with the coil acting as the primary being fed with electrical energy, and work piece as the secondary. This pressure difference that pushes the hot gas up the flue gas stack or the chimney is the 'chimney or stack effect'. The problem is simply solved by introducing a small heater and a blower into the system. my web-site [อินดักชั่น (...)