Optimal Cooling Strategies in Continuous Casting

Problem:
In the soft-reduction zone of a continuous casting machine the strand thickness is reduced slightly by compression. By doing this, one aims to counter segregation defects arising during solidifiction. A secondary benefit is to compensate for strand shrinkage. Effective soft-reduction requires that the crater end of the solidus isotherm remains positioned within the soft-reduction zone. The problem is to ensure that this happens by controlling solidification with cooling water, sprayed onto the outside of the strand. An additional difficulty here is that the casting speed varies which makes it impossible to use a stationary model.

 

Result:
cooling

 

Transferable expertise:
Inverse problems, numerical solution of partial differential equations, optimization.

 

Contact person:
o.Univ.-Prof. DI Dr. Heinz Engl