【摘要】 钢的洁净度和铸坯的表面缺陷直接影响焊丝钢的性能。分析了炼钢各工序钢液中的全氧和夹杂物数量、夹杂物成分和形貌;统计了铸坯的表面缺陷。其结果表明,钢中夹杂物主要有以MnO-Al2O3-SiO2-CaO为主的复合脱氧氧化物夹杂物、MnO-Al2O3脱氧产物夹杂,铸坯表面缺陷主要有表面气孔和表面裂纹。更多还原

【Abstract】 The purity of steel has direct effect on its mechanical properties.the oxygen content、inclusion quantity、the component of inclusion and the inclusion appearance were analyzed,and also the surface flaw was counted.The result shows that the main type of inclusions in the ER70s-6 weld wire steel is complex oxide system,including MnO-Al2O3-SiO2-CaO system,MnO-SiO2 system and there are two surface flaw on the continuous cast slab,one is surface pores,the other is surface crack.更多还原