Solving steel casting issues
Stop casts and downgraded material are overcome with technical assistance and solutions from Air Products.
Issue: A steel customer was experiencing quality problems during casting which were not only causing downgraded material, but were at times also cause for halting production. Specifically, certain steel grades which are exposed to air during casting, will allow for oxide formation that leads to undesirable inclusions and premature end to casting. Their technical team requested Air Products’ assistance to find a solution.
Solution: With experience in steel making as well as cryogenic inert gas flow, we worked with the customer to set up a trial where liquid argon could be sprayed into the hot tundish prior to cast. After several site visits, design and safety discussions, we provided temporary equipment, on-site support and monitoring methodology to combat this costly problem. The trials were successful and we continued to work closely with the customer to install the permanent, simple and least-cost solution. Shortly after installation of this solution, the quality problems were not only minimized, but this new practice was standardized, resulting in significantly reduced clogging and subsequent stop casts.