针对唐钢超薄热带生产线中FTSC工艺的H2长漏斗型结晶器在使用过程出现的问题，开发设计了新的漏斗型结晶器。这种漏斗型结晶器将H2结晶器下部的漏斗区改为平面区，结晶器漏斗区高度由2100 mm缩短为900 mm，并通过模拟计算和优化设计，使结晶器内腔曲面形状各部分平滑过渡，使其具有生产铸坯承受变形应力小的优点。工业应用试验获得了成功，结果表明，使用新型结晶器较好地消除了开浇初期铸坯纵裂现象，提高了铸坯质量，新型结晶器对于钢种和铸坯断面具有良好的适应性，使用寿命达到了进口铜板的水平。

Aiming at the problems of H2 long funnel mold during the production of FTSC ultrathin slab continuous casting process in Tangshan Steel, a new type of mold is developed and designed. The new mold adopts the plane section instead of the funnel section of H2 mold bottom, and shorten the length from 2100 mm to 900 mm. By simulating and optimizing the slab stress in molds, a new shapefunnel mold is designed, which have merits of lower slab stress and strain and smoothtransition of curvesurfaces. The new mold is used in plant trial successfully, the results show that the mold eliminates longitudinal crack during starting cast and improves slab qualities. The mold has great applicability to steel grades and slab sections. The new mold is on a par with the mold imported in lifetime character.