【摘要】 从高级别管线钢铸坯纯净度(夹杂物数量、形态、分布、气体等)、铸坯表面缺陷(裂纹、夹渣、气孔等)、铸坯内部缺陷(裂纹、偏析、夹杂等)等方面,分析了高级别管线钢质量的影响因素及控制方法。对三种精炼生产工艺流程生产的铸坯中有害成分进行了对比。更多还原

【Abstract】 It is analyzed the factors to affect the quality of high-level pipe line steel and the control methods from three respects:purity of casting billet(amount,morphology,distribution and air of inclusion),surface of casting billet(cracks,slag,air holes),inner defects(cracks,segregation,inclusion),compared the harmful compositions in casting billet produced by three kinds of refining process.更多还原