鋼水及其鑄坯非金屬夾雜研究.pdf

1、武漢科技大學碩士學位論文鋼水及其鑄坯非金屬夾雜研究姓名：余其紅申請學位級別：碩士專業(yè)：鋼鐵冶金指導教師：王慶祥20070510武漢科技大學碩士學位論文第2頁AbstractWiththewidelyapplicationofbilletitsqualityrequiresbeimprovedThenonmetalinclusionharmnesshasreceivedmoreattentionTherefore也econtrolling

2、ofthequantityshapeanddistributionofinclusionareessentialtoamelioratethequalityofsteelBasedontheliteraturesummarization，experimentalstudyandinvestigationofpresentproductionofbillet，theinvestigationofinclusionsinHP295、SPHC

3、、W20BhasbeencarriedoutinBArCCsystemofWISCOSamplingsfromdifierentprocedureshavebeenanalyzedbymearL$ofmetallo莎aphieexamination，ScarmmgElectronMicroscope(SEM)andchemicalanalysis，etcThemainconclusionsaredrawnasfollows：TheArb

4、lowingcausedthedecreasingofT[O】andincreasingofquantityeffectively；theeffectofremovinginclusionisnotgood，sofurtherperformanceofthemetallurgybetweenladleandtundishisrequired；theoccurrenceofabsorbing『tqandthesecondoxidizati

5、onduringeachprocessdegradedthecleannessofthesteel；thesteelcleanlinessisveryregularlythepeakoftheinclusionsisappearedinthe1／4thicknessoftheinsidedirection，butitisaverageonthewidthdirectionAccordingtotheresearches，inordert

6、oobtainHP295、SPHC、W20Bofhighqualitythefollowingsaresomemeasurementsandsuggestions：optimizingtheoperationofArblowingtohelpthefloatingoftheinclusions；strengtheningtheprotectivecastingtoavoidthesecondoxidization；takingraree