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对涟源钢铁公司CSP试生产的Q235B钢进行了质量分析,得到了成材夹杂物的种类、数量、大小及分布规律。其成材夹杂物粒径以小于10μm的为主,占92%;夹杂物形态以圆形为主,占夹杂物总量的60%以上;成材组织为铁素体-珠光体;铸坯表面呈短的纵向裂纹。
The quality of Q235B steel produced by CSP trial of Lianyuan Iron and Steel Company was analyzed and the types, amount, size and distribution of inclusions in the finished product were obtained. The diameter of inclusions is less than 10μm, accounting for 92%. The shape of inclusions is mainly round, accounting for more than 60% of the total inclusions. The microstructure is ferrite-pearlite. The surface of the slab Short longitudinal cracks.