综述球铁件的皮下气孔

õSurveyõ;710071GPKKKLPSummaryoftheSubsurfaceBlowholeinNodularCastIronSunWeiqing;XianElectronicUniversityofSci&TechGGuoLingjun;XianHighVoltageApparatusWorksGAbstractPThispapersummarizesindetailthesubsurfaceblowholewhichiseasilyappearingintheproduc2tionofnodularcastironbothathomeandabroadKconcerningtheformingmechanismsandaffectingfators1Italsopresentssomeeffectivepreventivemethods1KeywordsPNodularcastironSubsurfaceblowhole1K0152mmK0152mmKL[2]LK[3]SiO22MnO[2]KKKKLKK[4]LKKKMgAlMnKLKH2SCOLÉKLKLKKKKLKL2211LKKKLKKLKKKL[7]PP=Po+2RörP-MPo-+Mr-MR-LKRKPKPKKLKKKKLK23=I4ö1996KLP01025%0106%K[7]KK[6]L212KKKKKP[Me]+H2O[MeO]+2[H]MeFeSiMnMgMMeOLKMgSP[MeS]+H2OH2S+MgOK;KGP[MeO]+[C][Me]+COKKH2COH2SLKKL;GKL213KLKK;GKMKKKKL[5][6]L331131111AlAlLKAl01025%01060%K[6]MAlKAl01088%0133%K[3]LKAlL31112TiTiK0102%TiAl[8]KKKAlTiL0105%KK[9]KTiNKLK[10]L31113MgMgKKMgKL[3]KMg011%KL[6]KMg01038%01054%KLKMg0103%0106%KKKMgL31114TeS1F1Garter[3]K01002%01004%TeKL[7]KTe0010075%KKTe0101%KLK01004%TeKKL31115REK[7]L[13]KL[41]KKKKL31116SiKL[3]K1343K1399KSi2144%2197%KKKSi1158%2110%KL[40]KSi1171%1198%K88KKL31117C[41]KSiKKLKSiKK;GKKLKKKKKCE416%417%L31118SSLK33=I4ö1996H2SLKKS[13]LK[7]KKLKL31231211KKKKLP;1G;147014001300G[1]M;2G;140013501300GK[15]M;3G13561200KKK12851304K[6]M;4G1300KKKM;5G13001400[16]LK13501400KKL31312[11]K6mm25mmKKKL[17]KK;75mmGLK6mm25mmKL31213KK[18]L[19]K3040mmKKKLKKL[39];GKL31331311K;GKLKPL[6]K6%KKK716%KL31312KK3%K[15]L[15]K;GKKKL[20]K5%7%KKKKKKL[3]K1%KKKKLKKLPK;G[9]L31313[21]KFe3O4KKFe3O45%KLS1F1Carter[3]K2%Fe2O3K65%5%KN2K2%5%Fe2O3KLFe2O3PFe2O3KKL;Fe2O3Fe2O4GL313147%13%K[15]LKK[22]M[1]M[1]KLKK[1]L314KKLKP31411K200[6]L31412K[20]31413Na3AlF6;Na3SiF6GKK[23]L43=I4ö199631414KKNaF[24]L31415K[25]L31416K200MK[1]L315K;GKK[26]MKKKCOKKK[27]M2%3%CaCO31%2%Na2CO3KK35minK[28]LKP[25]MKMK8göNm3KKK[30]M;KKKG[29]MK[31]M[32]LKKLP;GKKKMKKMLK40%60%L316KKK[12]L-KKMKMKK[33]LK[8][9]LKKM;70%K10%K20%GK[29K34]MKKLK[34]LKKLKKK[35]LKK[36]MK[37]LK[38]LK[6]MK[1]KL4LKLKKKKKKKMKKKCOH2KKKKKLKKKL1W1C1Munay1K1965;2GK12Kiyoshikita1K1981;1GK593S1F1Carter1AFSTransactionK1979K87P245268411PK1980K5151K1965;1GK3761K1983;2GK17B1Hernandez1AFSTransactionK1979K87P3353488J1V1Dawson1FoundryK1973K101;6GP899J1V1Dawson1K1966;6GK3410TransactionsofAFSK1979K87P43343853=I4ö1996õõResearchõ;100095GPZL102K2LEZL102K4KLPInfluenceofSomeFactorsontheResidualStressofCastingsSaiXichang;BeijingInstituteofAeronauticalMaterialResearchGLiBingzhong;NachangInstituteofAeronauticalTechnologyGAbstractPTheresidualstressofaluminiumalloyZL102aftercastingandcoolinghasbeenstudiedinthispa2perandthestress2timecurvehasbeenpresented1ItispointedoutthattheresidualcastingstressofalloyZL102isinfluencedbytheratioofcrosssectionsofstressbarinE2typestresstestframeKthelangthofstressbarandpouringtemperatureindifferentextentandhasamaximumvaluewhenthecrosssectionarearatiobetweenstressbarsis41KeywordPCastResidualstressAluminumalloy1KLKKKLKKLLKKLKKKK11D1Wolters1K1981;3GK60121K1986;2GK611311K19811141K1982;4GK63151K1985;3GK15161K1987;4GK5017E1F1Ryntz1AFSTransactionK1983K91P16116418MatsubaraY1Gress2PraxK1973;17GK309319191K1986;5GK394020111986;8GK2021C1L1Pidgeon1K1965;4GK364122Levelink1H1G1AFSTransactionsK1972K80P359368231K1987;2GK46241K1985;1GK51251K1988;4GK24261K1985;2GK45271K1987;10GK1518281K1987;9GK3841291PK1980301K1984;3GK38311K1983;4GK4445321K1984;3GK41331K1987;3GK43341K1985;4GK2635....2.K1980;7GK253636....2.K1976;1GK3037....2.K1976;5GK2829381K1985;2GK47391K1987;2GK21401K1987;2GK31411K1991;4GK1163=I4ö1996