重钢新区大方／矩形坯连铸结晶器数字式电动缸非正弦振动技术应用实践

Practice of continuous caster crystallizer digital electric cylinder Non-sinusoidal vibration technology of passes bloom/rectangular bloom of Chongqing Steel

重钢环保搬迁改造建设工程二炼钢生产线拟改建7#R10．5m四流大方／矩形坯连铸机，生产断面250×250mm、250×350mm，设计产能80万t／a。结合国内大方坯连铸生产实践，对该类型连铸机结晶器振动采用方式进行了设计及优化选型比较，并确定采用新型数字式电动缸非正弦振动技术，通过现场实践运用，采用非正弦振动技术后，生产使用稳定，铸坯质量得到改善，取得了良好效果。

The 7#R 10.5m four passes bloom/rectangular bloom continuous caster, whose production sections are 250 × 250mm, 250 ×350mm and yield of 800,000 tons per year, are planning to modify after the relocation of Chongqing Steel Company. Combined with the practices of domestic steel industry, a new type of mould oscillation program, the digital non-sinusoidal oscillation with electric cylinder, was adopted on this caster. After practices, the properties of caster are stable, and the quality of slabs is improved.