| 摘要 |
<p>Unit of equipments for the continuous casting of steel slabs, especially low thickness slabs at high speed, comprising a mould (1) fed by a submerged nozzle (2) and connected to an oscillator (3) driven by a hydraulic servocontrol, wherein the following geometrical relation is valid concerning both the mould and the submerged nozzle shapes and their mutual arrangement: (A1/S1)/(A2/S2) = 0.9 DIVIDED 1.1 and preferably A1/S1 = A2/S2, wherein, on the mould horizontal section at the meniscus level, A1 is the area enclosed between submerged nozzle and larger sides of the mould, and A2 is the residual area on said section, between submerged nozzle and smaller sides, S1 and S2 being the total sums of the mould peripheral lengths corresponding to each of said areas. Furthermore, at least in the mould horizontal section at the meniscus level, the distance between submerged nozzle and copper plates forming the mould walls is kept constant.</p> |
