双流板坯结晶器锥度动态保持技术的开发与应用

Development and Application of Two-Strand Slab Continuous Caster Mold Taper Dynamic Balance Technology

详细介绍了山东富伦钢铁厂新建的国内首台2机2流不同断面板坯连铸机结晶器锥度动态保持技术的功能、设备构成和液压、电气控制原理,并推导得出浇注过程中结晶器宽边减轻力、碟簧预紧力与钢水静压力之间的定量关系。从2013年10月9日该技术正式投入使用至2013年11月12日,累计浇钢41 860 t,每个浇次平均连浇14炉,最大拉速可达1.4 m/min,彻底避免了跑锥问题,可使左、右锥度始终保持在±0.5 mm以内,铸坯内外部质量优良,实际使用效果令人满意。

Shandong fulun Steel has built the first two-strand slab continuous caster for producing products with different sections. The functions and equipment structure together with the hydraulic and electric control principle of taper dynamic balance technology of the slab continuous caster were presented. The quantitative relationship of pressure reduction on mold broadside, disc spring pre- tightening force and the static pressure of liquid steel in the process of casting was derived. From the application of this technology on October 9, 2013 to November 12, 2013, 41 860 t slab has been cumulatively casted, 14 heats on average were continuously cast for every casting sequence, and the maximum casting speed is1.4 m/min. In the meantime, no taper change happens and the left and right tapers are always kept in ±0.5 mm. The internal and external qualities of slab are excellent, and actual application effect is satisfactory.