With significant emphasis on reducing the turbulence in the bath and the need for effective distribution of metal along the roller length in twin-roll casting, a novel submerged entry nozzle (SEN) configuration with two “gap regions” was provided. The “gap regions” of the new SEN divide the bath into two parts, the “upper melt bath” (casting region) and the “lower melt bath” (rolling region). The newly designed SEN was tested by using both full-scale water modeling experiments and numerical simulations. Results demonstrated that the turbulence could only be found near the rotating roller surfaces. The “gap regions” can make the near-wall flows more uniform. They can also prevent the instabilities in the “upper melt bath” to be transferred to the “lower melt bath”, thus improving the stability of the process. Moreover, the novel SEN can stabilize the meniscus where the initial solidification occurs. This is achieved by increasing the SEN immersion depth, which in turn, can enlarge the volume of the upper part of the bath.

着重于减少熔池中的湍流以及在双辊铸造中沿辊长度有效分布金属的需求，提供了具有两个“间隙区域”的新型浸入式注嘴（SEN）配置。新SEN的“间隙区域”将熔池分为两部分，“上部熔池”（浇铸区）和“下部熔池”（轧制区）。通过使用全面水模型实验和数值模拟对新设计的SEN进行了测试。结果表明，湍流只能在旋转的滚子表面附近发现。“间隙区域”可以使近壁流动更加均匀。它们还可以防止将“上部熔池”中的不稳定性转移到“下部熔池”中，从而提高了工艺的稳定性。而且，新型SEN可以稳定发生初始凝固的弯液面。这可以通过增加SEN的浸入深度来实现，而沉浸深度又可以扩大镀液上部的体积。