【摘要】 通过扫描电镜、能谱仪和电解分析研究了在110 t AOD-LF-中间包-160 mm板坯-连铸-热轧板卷生产过程304不锈钢（/%:0.03～0.04C、0.39～0.41Si、1.20～1.23Mn、0.014～0.016P、0.001～0.002S、7.95～8.00Ni、18.06～18.20Cr、0.003～0.004Al、0～0.002Ti）中夹杂物类型、形貌和成分。结果表明,在每一生产阶段都出现5～10μm球形SiO₂-CaO-MgO-Al₂O₃型夹杂,同时在AOD出钢过程产生20μm MnO-Cr₂O₃型夹杂,LF过程去除一部分MnO-Cr₂O₃夹杂,中间包和正常浇铸的铸坯中很少出现;但两炉连浇的铸坯易出现MnO-Cr₂O₃夹杂,热轧板中MnO-Cr₂O₃夹杂尺寸≤5μm。电解分析结果表明,两炉连浇铸坯中夹杂物数量（4.65 mg/10 kg）比正常浇铸的铸坯（3.08 mg/10 kg）增加了51%。更多还原

【Abstract】 Type,morphology and ingredient of inclusions in stainless steel 304（/%:0.03～0.04C,0.39～0.41Si, 1.20～1.23Mn,0.014～0.016P,0.001～0.002S,7.95～8.00Ni,18.06～18.20Cr,0.003～0.004Al,0～0.002Ti） during 110 t AOD-LF-tundish-160 mm slab casting-hot rolling strip coil process have been studied by SEM,energy dispersive X-ray spectrometer and analysis by electrolysis.Results show that the 5-10μm spheroidal SiO₂-CaO-MgO-Al₂O₃ type inclusions occur in each steelmaking process,while the 20μm MnO-Cr₂O₃ inclusions form in tapping process of AOD,part of which is removed in LF refining process,and they less occur in liquid in tundish and in normal casting slab,but the MnO-Cr₂O₃ inclusions easily occur in two heats sequence-casting slab,the size of MnO-Cr₂O₃ inclusion in hot-rolled strip coil is≤5μm.Electrolytic analysis results show that the inclusion amount in two heats sequence-casting slab（4.65 mg/ 10 kg）increases by 51%as compared with that in normal casting slab（3.08 mg/10 kg）.更多还原