Internal Firing/Gas Firing
Internal firing or gas firing in metallurgy refers to a method of heating or processing materials, typically metals or metal alloys, using gas-fired systems. This involves the combustion of gases to generate heat, which is then directed onto the material for various metallurgical processes.
In this case, the workpieces are heated by gas firing through nozzles. Vessels of suitable dimensions and arrangement of openings can be post-weld heat treated by internal firing It is not advisable to post-weld heat treat vessels that contain Internals in a manner. The outside of the vessel must be completely encased in Insulating material, and again, at least a 12-point temperature recorder is advisable.
