Thermal-induced Stress in a Metallurgical Furnace
Furnaces use in the metallurgical industry suffer very high temperature gradients. For instance, this client had problems due to the different thermal dilatation factors between the inner refractory material (ceramic-like) and the outer steel structure. To assess this problem, a sequential thermomechanical simulation has been performed on the structure. The simulation helped the client to address problems, in order to design a new and improved structure, regarding:
- Gap values between the refractory blocks
- Stiffness of the outer steel structure
- Pressure that the dilation applies on the furnace’s doors
- Spring compression mechanisms to keep the furnace waterproof
The simulation includes a challenging amount of contact elements and nonlinear material behavior.