Trouble shooting and optimization of Nitrogen-Hydrogen Furnace atmospheres for Annealing

Proper specification, measurement, and control of annealing furnace atmospheres are critical to achieving the desired metallurgical and microstructural results. Annealing plants can reduce or eliminate some of the common problems , such as sooting, oxidation, sticking and distortion with proper process control. Usually, an atmosphere control system can help heat treaters improve the quality and consistency of their processes. Air Products has been serving this industry for many years and provides the customers with ideal atmosphere solutions and trouble shooting knowledge/capability. This paper reviews years of field experience with nitrogen and hydrogen based atmosphere systems and includes case studies of Air Products’ innovative atmosphere monitoring and control solutions.