近终形异形坯/大方坯复合型连铸机设计特点

Design feature of net-shape beam blank and bloom compatible caster

为配合轨梁厂2号横列式轧钢线改造,包钢炼钢厂新建了一台3机3流异型坯/大方坯复合型连铸机,可以生产断面1 024 mm×390 mm×120 mm异形坯,还可完美兼容319 mm×410 mm大方坯的生产。该铸机采用塞棒手动开浇+半浸入式水口浇铸方式、全弧形组合式结晶器、DynaFlex液压振动、辊列优化、内弧自动除水、连续矫直、自动火焰切割、自动出坯、DynaSpeed二冷自动配水等多项新技术。截至2013年1月20日,该铸机累计生产BB4断面异形坯5 150.4 t,各项指标达到设计要求,铸坯表面无缺陷、内部质量优良。

For matching up No. 2 transverse rolling production line reforming in beamand-rail steel mill, Baogang have built one set of 3 strand near net shape beam blank and bloom compatible caster which can produce the section 1 024 mm ×390 mm× 120 mm beam blank and also can be perfectly compatible with 319 mm ×410 mm bloom production. Stopper manual opening the tundish nozzles ＋ semi-submerged entry nozzle liquid steel casting pattern,arc combined type raold,rollers arrange optimization,inner arc water automatic deflection, DynaFlex hydraulic oscillation, continuous straightening, automatic torch cutting, automatic discharging beam blank or bloom, DynaSpeed automatic secondary cooling and many other new technique are used in the caster. Until January 20, 2013, the caster cumulatively have produced 5 150.4 t BB4 section bleam blank, all kinds of metallurgical indicators meet the design requirements, excellent internal quality of beam blank and surface without defects.