Study on the Liquid Metal Flow Field in Narrow-Side-Patter-Mold of Slab Continuous Casting

Abstract

The flow pattern and velocity distribution of liquid metal in the Narrow-Side-Patter-Mold (NSP-Mold) have been investigated with a mercury model as analogue to molten steel in the continuous casting. The Ultrasonic Doppler Velocimeter (UDV) has measured the velocity under various magnetic distribution and flux density. The impingement intensity of liquid metal to mold narrow wall have been calculated based on the measured data, and the influence of magnetic flux density on the liquid metal flow in the mold has been analyzed. The results show that with narrow-side-patter magnet and increase of the magnetic field, the surface of the melt gets weak and the free surface fluctuation is suppressed, the impingement intensity of liquid metal to mold narrow wall gets weak, impacting depth becomes shallow and a plug flow can be rapidly formed.