Numerical Simulation The 3-Dimensional Flow Field And Temperature Field Of Wide-Slab Continuous Casting Mold

For the moment, slab caster trend to change wide side to wider and change narrow side to more narrow. The phenomena of shell formation at bath level in mould often appear at the process of continuous cast. It affects slab quality and process smooth operation and constrains the development of slab caster high efficiency heavily. At the same time, by the process of wide slab continuous casting, the flow fluid in the mold has s great influence upon not only heat transfer and inclusions floatation, but also with many surface and internal quality problems such as crack, segregation etc. Therefore, the numerical simulation of the flow fluid and temperature field is of utmost importance for improving the wide slab continuous casting production.The archetype of the mould is the wide slab continuous casting mould (cross section size is 230mm×2000mm) in a iron and steel company in this paper. A physical model and mathematical research method is performed to study fluid flow action in mould when original SEN is applied. The research designed a new style SEN for the phenomena of shell formation at bath level in mould at the process of continuous cast especially and optimized the SEN structural and operating parameters. Commercial program PHOENICS3.5 was applied to the continuous casting process and a mathematical simulation eatablished for flow field and temperature field. This mould paper investigated the by three dimensions velocity and k-εmodel The conclusions show that:By using the original inundate numerical simulation calculations, the nozzle outlet stream scope of the impact of smaller, regional mobile surface inactive. not ideal, far from the nozzle surface Department Narrow molten steel flow velocity is very small, Narrow easily lead to low temperature steel surface is not conducive to the protection of molten slag, Narrow near the slag crusts.When it was casting for using the new nozzle, steel flow stability in the mold, temperature uniform distribution. To improve wide slab quality plays a positive role, reasonable export dip for 10°. Nozzle insertion depth is more appropriate from130mm to 180mm..The numerical simulation fits well to the water experiment in literatures and the site data, and the results put an important foundation for further optimization of SEN and proper operating parameters.