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扁坯、方坯和异形坯连铸技术的出现及其推广应用，引起型钢开坯工序的相应变化。特别令人注目的是，用连铸扁坯、板坯轧制Ｈ型钢的复杂断面型钢开坯轧制新技术及主要为解决连铸与现有小型轧机衔接问题的线棒材开坯轧制新技术。１ 用连铸坯轧制Ｈ型钢用传统方法生产Ｈ型钢时，?
The emergence of the continuous casting of slabs, billets and shaped billets and their popularization and application have caused the corresponding changes of the billet forming process. Particularly striking is the use of continuous casting slab, slab rolling H section of the complex section steel billet rolling new technology and mainly to solve the problem of convergence with the existing small rolling mill bar wire bar rolling new technology. 1 H-beam with a continuous casting slab H-beam production using the traditional method?