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前言唐钢—炼立式连铸机,在震后经两次技术改造,由200mm~2单流→2×200mm~2双流→2×143mm~2双流。几年来的生产实践证明,改造是成功的。现年产量已远超原铸机的设计能力。84年达5.2万吨/年,已成为该厂铸锭的主要生产力。所生产的铸坯质量基本能符合轧钢厂的要求,缩孔小,菱变未超过部颁标准,加之其工艺上中间包温降小和氮封钢流等特点,使该铸
Preface The Tangshan Iron and Steel Co., Ltd., A continuous casting machine, is made up of 200mm ~ 2 single flow → 2 × 200mm ~ 2 double flow → 2 × 143mm ~ 2 double flow after two technological transformations after the earthquake. Years of production practice has proved that the transformation is successful. The annual output has far exceeded the design capacity of the original casting machine. 84 years to 52,000 tons / year, has become the main ingot casting plant productivity. The quality of the billet produced can basically meet the requirements of the rolling mill. The shrinkage cavity is small and the ling deformation does not exceed the ministerial standards. In addition, the process of the tundish temperature drop is small and the characteristics of the nitrogen sealed steel flow so that the casting