DPIV Physical Simulation Of Melt Flow In A Mould During The Continuous Casting Of Aluminium Alloy Slab

With the increasing development of technologies, high-efficiency continuous casting has become the main development direction of the continuous casting. Fluid flow in the mould must be optimized in order to improve the internal and surface quality of the slabs while increasing the casting speed. Aluminum alloy continuous casting process, floating distributor structure and mold casting process parameters directly impact the flow field, thereby determining the slab surface quality and internal organizational structure.Thus, the optimization of floating distributor structrue and technological parameters is significant.This paper studied the fluid flow phenomena happened in continuous casting of aluminium alloy by Digital Particle Image Velocimetry (DPIV) technology, analyzed the influence of technical parameters and floating tundish structure on flow field. the research on flow field in mould helps optimizing floating distributor processing parameter, then improving product quality. Considering effect of fluid-solid interface, natural sponge whose micro-structure is similar to fluid-solid interface was used in order to simulate the real condition.Experiment results showe that the faster the casting speed is, the more turbulent free surface is, and that racetrack ports are better than rectangular ones. The angle is one important factor which influences the flow in the mold. The bigger the angle is, the lower the impacting point on the narrow face.