连铸大方坯非金属夹杂物研究_杨玉

:　(1977-),(),,,,。杨　玉,庞兆夫,陈　昕,金纪勇(,114009)　:,,1;;;1/41/4。:;;;:TF777.2　:A　:1002-1043(2008)02-0011-04ThestudyofnonmetallicinclusionsincontinuouscastingbigbloomsYANGYu,PANGZhao-fu,CHENXin,JINJi-yong(TechnologyCenterofAnsteelCompanyLimited,Anshang114009,China)Abstract:Thearticledidthedetailedanalysisofthedistributionoftheinclusionsindif-ferentpartsofthecontinuouscastingsquareblooms.Theresultsshowthatthefirstbloomsofthefirststoveapparentlycontainsmuchmoreinclusionsthanothers.Thesulfideinclusionismainlyintheformofferricsulfides;Theoxidesinclusionismainlyintheformofsilicondioxide;Itisalsofoundthattheamountofinclusionataboutoftheinnerandouterarcandlengthsfromleftandrightismuchmorethanotherplaces.Keywords:continuouscastingbloom;nonmetallicinclusions;sulfideinclusion;oxidesin-clusion　　,。,、、,。280mm×380mm。1　,,(7.9m)、4(23.7m)1(47.9m)。、、,,。[1],,。,,:50mm、60mm,12,。1,1。,,。:48(1),30mm×25mm。,·11·2008　4242　Steelmaking　　Apr.2008Vol.24　No.2　　　　　　　　　　　0.36mm×0.24mm,10,。,,。,,。1　()　　:1,(1)48,,,120mm。3412,,2,,12。2　()2　2.1　单位面积内夹杂物数量的统计分析,,1,3。3　()　　:174.49/mm2,437.78/mm2,451.50/mm2。,,,1/4,280/mm2。,,。2.2　大颗粒夹杂物的统计分析,,,4。4　()·12·　　　　24:10.041mm,40.048mm,40.043mm。0.02～0.06mm,0.05mm,0.10mm1/4。40.05mm,。1,20,,,、。,0.07mm,。3　3.1　连铸坯常见夹杂物形态2.1,(5)(6)。:;,。5　100×6　100×3.2　连铸坯电解夹杂物检验情况1,。0.0598%,SiO20.0524%,(FeO、Al2O3、MnO、CaO、MgO、Cr2O3),,80%。SiO2,7。7,。7　1SiO2()　　23412,1。,,0.02%,MnSFeS,FeSMnS,FeS。FeS,,。,FeS、,,988℃,,1100℃～1300℃,,,,[2],。,,FeS,MnS,。4　　,、,,,,,,,,;4·13·2　,:　　1　1w(MnS)/10-6w(FeS)/%w()/%10185100.01930.01850.01980.01930.02030.02030.02030.0203177162620.01860.01320.01410.01370.02030.02030.02030.0199106860.01740.01780.01760.01780.01840.01840.01840.01841,,,,,,,。,,44,,,。5　　(1),,1/4。(2)1、44,0.02～0.06mm。4,0.07mm,。(3)。,80%;,。,,,,,,。[][1]　.[J].,2001,27(B08):53-57.[2]　,,,.[J].,1997,18(3):34-39,50.(:2007-04-23)(上接第3页),,,;,,、±30°2～3,,;、,。、,“”。,100mm,。3　100t1,20046,0.2kg/t。,(7)。[C]·[O]0.00295。,1“”,[P]0.015%。,、45、65、。7　4　　,,,,20046。[][1]　.()[J].,2003(1):52-53.(:2007-08-26)·14·　　　　24