Continuous casting method and device of steel extra section and especially I type extra section

摘要

In the continuous casting method of the steel extra section and the especially double T type extra section, the liquefied steel iron in opening die/di 1 is filled substantially in vertical direction. Cavity section of this opening die/di 1 is formed from two flange parts 2,3 and the web part 4. As for the liquefied core of the extra section strand, the flange part 2,3 and/or making use of the electromagnetic induction power in the territory of the web part 4, it is set to the agitation motion of opposite direction to continuous casting direction. Agitation motion the liquefied steel iron inside the melted crater of the extra section strand the flange part has the action which is made to exchange between 2,3 and the web part 4. Because of this, it reaches the point where positively it can produce effect in a way which aims toward the flow and the temperature condition in the crater of the liquefied steel iron inside the extra section strand skin shell, other than control possible desirable flow state, it reaches the point where stabilization of the surface territory of the liquefied metal is brought.