Production of Gold Plated Tubes for Transparent Tube Furnaces by Thermcraft
This video from Thermcraft shows the production of gold plated tubes for their TransTemp transparent tube furnaces. These furnaces use an outer tube with its internal face gold plated to reflect heat back into the work tube. The outer tube is opaque at room temperature, but becomes transparent above 600°C allowing the operator to see what is actually happening inside in real time at elevated temperatures.
Shown in the video are the glow discharge process for cleaning the tube and then the gold plating process.
Run Time - 2:17 min