连铸大方坯主要用于生产对产品质量有较严格要求的特殊钢,如合结钢、齿轮钢、弹簧钢、硬线、轴承钢等。大方坯连铸具有以下特点:(1)钢水静压力大,铸坯易鼓肚;(2)铸坯内外温差大,易产生裂纹;(3)由于凝固末端较尖锐,易形成中心偏析和疏松;(4)铸坯断面大,对结晶器、振动及拉矫均提 Billets are mainly used for the production of special steels with strict requirements on product quality, such as knotted steel, gear steel, spring steel, hard wire and bearing steel. Billet continuous casting has the following characteristics: (1) steel hydrostatic pressure, slab easily bulging; (2) large temperature difference between inside and outside the slab, easy to produce cracks; (3) as the tip of the solidification more sharp, easy to form center segregation and porosity ; (4) Slab cross section, on the mold, vibration and tension correction are mentioned