铜扁线连续挤压气泡缺陷的研究

ISSN10098984CN221323/N()2010112J.ChangchunInst.Tech.(Nat.Sci.Edi.),2010,Vol.11,No.219/366972铜扁线连续挤压气泡缺陷的研究:2010-03-21:(2009tlxy26):(1976-),(),,,张红云,谢博,张金标(,244000):通过对铜扁线气泡缺陷的研究,找出了气泡缺陷产生的主要原因:上引无氧铜杆中的气泡杆料表面被氧化或污染腔体堵头发生轻微变形带入的空气运转工作间隙不合理问题带入气体等针对产生气泡原因,采用低温熔炼扩展模用防尘布包裹更换挤压轮密封圈按工艺规定调整工作间隙至规定值等具体解决措施应用于生产:连续挤压;铜扁线;气泡缺陷:TG14:A:10098984(2010)020069040,11,,,,,,,,,,1,:(1),,;(2),,,;(3),,,,,,22:1,;2,,,42.1,,,,,,H2O2,H2[H],O2Cu2O[O]+2[H]H2O(g),,,,,2.2,,,,,,,,,2.3,35mm2(2!1),,10,,,,,,,,,,,2,22.4,,,3,,33,(1),,,,,;,,,,.,,,(2),:;,,,;,(3),,95mm12mm,7mm∀2.4mm,10mm∀6mm70mm2(4),70()2010,11(2),,,,,,,,;,,,,,,,1%~5%0.8~1.2mm,;,,,,4R0,R1O,O1(x0,y0),,:0=180#+tan-1y0x00=x20+y20O1:=0cos(-0)+R21-20sin(-0),:4!=-R0!=0cos(-0)-R0+R21-20sin(-0)(1)4:=00,!1=-R0,!1=0cos(-0)-R0+R21-20sin(-0)(2)=68#,!2=-R0,!2=0cos(-0)-R0+R21-20sin(-0)(3)(2)(3),R0R1,O1(x0,y0),1(x0,y0),!1!21!1!2/mmx0y0-0.1-0.2-0.3-0.4-0.5-0.6-0.1!1=0.8999!2=1.05520.79991.01760.69990.98000.59990.94230.49990.90450.39990.8667-0.2!1=0.8998!2=1.14780.79981.11020.69981.07260.59981.03490.49980.99710.39980.9593-0.3!1=0.8997!2=1.24050.79971.20290.69971.16520.59971.12750.49971.08970.39971.0519-0.4!1=0.8994!2=1.33320.79941.29550.69941.25780.59941.22010.49941.18230.39941.1444-0.5!1=0.8991!2=1.42580.79911.38820.69911.35040.59911.31270.49911.27480.39911.2369-0.6!1=0.8988!2=1.51850.79881.48080.69881.44300.59881.40520.49881.36740.39881.329571,:(x0,y0),,,,!1!2,!1!2,,!1!24,,,,,[1].[J].:,2008(1):48-50.[2],,.[J].,1997(5):13-14.[3],,.[J].:,2007(2):76-77.[4].[J].,1986(5):2-5.[5].[D].:,2006:22-24.[6].3D[D].:,2001:1-18.ResearchonbubbledefectsbycontinuousextrusiontocopperstripZHANGHong-yun,etc.(TonglingUniversity,Tongling244000,China)Abstract:Thecontinuousextrusiontechnologytoproducecopperstripwillcausegreatharmtobubbledefects.Itcannotonlyaffectthesurfacequalityandmechanicalpropertiesofbilletsurface,butalsoleadtothedamageoftool&die.Throughtheresearchonbubbledefectstocopperstrip,themaincausestotheproductionofbubbledefectsarefoundinthispaper,includingairofoxygenfreecopperbarbyupcasting,oxidationandcontaminatedofbilletsurface,airledbyslightdeformationofcavityplugstructure,andairledbyrunningclearanceworkunreasonable,etc.Accordingtothiscauses,someconcretesolvingmeasurescanbeusedinproduction,suchaslowtemperaturemelting,expansionmode,wrappingindustsheets,changingextrudingring,andadjustingtheworkingclearancetotheratedvalueandsoontoachievethewelleconomicbenefit.Keywords:continuousextrusion;copperstrip;bubbledefects(49)TheresearchonfractionandremovalmethodofheavymetalsinsewagesludgeLINXiao-ying,etc.(TheDepartmentofEnvironmentandEquipment,FujianUniversityofTechnology,Fuzhou350108,China)Abstract:ThefractionofheavymetalsinsewagesludgecollectedfromFuzhouYangliwastewatertreatmentplant,FuzhouXiangbanwastewatertreatmentplantandFuzhouKuaianwastewatertreatmentplantisinvestigated.Resultsshowthatthereisagreatdifferenceliesindifferentheavymetalsfromsewagesludge.ThecontentsofPb,CuandCrinsludgefromFuzhouKuaianwastewatertreatmentplantarethehighest,whichisabout326.4mg/kg,440.69mg/kg,1742.76mg/kgrespectively.Atthesametime,theexchangeable,carbonateboundandoxidizablefractionsinCu,Pb,ZnandCrarerelativelylow,buttheresidualphasesandtheorganicboundarerelativelyhigh.Italsosummarizestheremovalmethodsofheavymetalsfromsewagesludge.Throughtheanalysis,wegettheresultsthatthefractiondistributionofheavymetalshasanobviouslyinfluenceontheremovalrate,sotheremovalmethodsshouldbechosenaccordingtothefractiondistributionsofheavymetals.Keywords:sewagesludge;heavymetals;fraction;removalmethods72()2010,11(2)