1.Technology and Equipment Section,Shandong Province Metallurgical Design Institute,Laiwu 271104,Shandong,China;2.Steelmaking Plant of Laiwu Iron and Steel Co.,Ltd.,Laiwu 271126,Shandong,China
Abstract：This paper introduces the economic rationality on reforming No.1 billet CCM to a narrow slab ccm for strip rolling mill in Laigang, illustrates the main technical parameters of the CCM and the product mix of the narrow slab.The reforming project has been done in two steps.Many new technologies such as;meterring nozzle quick changing,mould level autocontrol,multipoint straightening and a lot of independently developed new technologies were successfully used in the new style of CCM.By optimizing the shape of tundish, high grade protecting slag and flw field in mould,perfect effects are gained in operation.
