olytic aluminum polishing processesWord文档格式.docx
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olytic aluminum polishing processesWord文档格式.docx
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a.providingapolishingsolutioncomprisingbyweight:
i.fromabout55%toabout90%ofaphosphoricacidsolution,whereinthephosphoricacidsolutioncomprisesfromabout60%toabout100%phosphoricacid;
ii.fromabout0.2%toabout20%ofahypophosphite-containingcompound,
whereincomponentsi.andii.aremeasuredoutofatotalof100%polishingsolution;
b.applyingamechanicalforcetothepolishingsolution,therebyprovidinganagitatedpolishingsolution;
c.immersingthealuminumalloymaterialinthepolishingsolutionforfromabout2minutestoabout60minutes;
and
d.makingthealuminumalloymaterialanodicbyapplyingaDCcurrentconcurrentlywiththeimmersingstep;
therebyprovidinganelectropolishedaluminumalloymaterial.
2.Theprocessofclaim1,whereinthepolishingsolutioncomprises:
iii.fromabout2%toabout30%ofapolyol;
iv.fromabout1%toabout15%ofapolyolether;
v.fromabout2%toabout20%ofanorganicacid;
vi.water;
whereincomponentsi.throughvi.total100%ofthepolishingsolution.
3.Theprocessofclaim1,whereintheDCcurrentisfromabout10voltstoabout48volts.
4.Theprocessofclaim1,whereinthepolishingsolutioncomprisesfromabout2toabout40gramsdissolvedaluminumperliterofpolishingsolution.
5.Theprocessofclaim1,whereinthepolishingsolutioncomprisesfromabout2toabout10gramsofdissolvedaluminumperliterofpolishingsolution.
6.Theprocessofclaim1,whereinthealuminumalloymaterialissubjectedtooneormorecleaningstepspriortoimmersingintothepolishingsolution,andwhereinatleastoneofthecleaningstepscomprisesimmersingofthealuminumalloymaterialinasolutioncomprisingoneormoreof:
ferricsulfate,peroxides,persulfates,perborates,sulfuricacid,nitricacid,hydrofluoricacidorammoniumbiflouoride.
7.Theprocessofclaim6,whereinatleastoneofthecleaningstepscomprisesimmersingofthealuminumalloymaterialinasolutioncomprisingferricsulfate.
8.Theprocessofclaim1,whereinthepolishingsolutionismaintainedatatemperatureoffromabout100.degree.F.toabout200.degree.F.
9.Theprocessofclaim1,whereintheimmersingstepisconductedforfromabout2minutestoabout30minutes.
10.Theprocessofclaim1,whereinduringtheimmersingstepthealuminumalloymaterialhasacurrentdensityofatleastabout10amps/ft.sup.2.
11.Theprocessofclaim1,whereinthealuminumalloymaterialcomprisesatleastabout85%aluminummetalinthealloy.
12.Theprocessofclaim1,whereinthealuminumalloymaterialcomprisesoneormoreofthefollowingAluminumAssociationdesignatedalloys:
1050,1060,1100,1145,1175,1200,1230,1235,1345,2024,2219,3003,5252,5657,6063,6061,6463or7075.
13.Theprocessofclaim1,whereinthealuminumalloymaterialcompriseslessthanabout2%byweightsilicon.
14.Theprocessofclaim2,whereinthepolishingsolutioncomprises:
i.fromabout65%toabout80%ofaconcentratedphosphoricacidsolution,whereinthephosphoricacidsolutioncomprisesfromabout60%toabout100%phosphoricacid;
ii.fromabout0.2%toabout5%ofahypophosphite-containingcompound;
iii.fromabout5%toabout15%ofapolyol;
iv.fromabout1%toabout10%ofapolyolether;
v.fromabout5%toabout15%ofanorganicacid;
15.Theprocessofclaim1,whereintheagitationforceisprovidedbyoneormoreof:
mechanicalstirringorapplicationofaeration.
16.Theprocessofclaim1,whereintheprocessfurthercomprisesremovingthealuminumalloymaterialfromthepolishingsolutionaftertheimmersingstepandsubjectingthealuminumalloymaterialtooneormoreofthefollowingsteps:
arinsingstep,adesmuttingsteporananodizingstep.
17.Theprocessofclaim2,whereinthepolyolcomprisesoneormoreof:
ethyleneglycol,glycerol,butanediols,propanediols,propyleneglycol,diethyleneglycol,polypropyleneglycolorpolyethyleneglycol.
18.Theprocessofclaim2,whereinthepolyolethercomprisesoneormoreof:
ethyleneglycoln-butylether,diethyleneglycoln-butylether,dipropyleneglycolmonomethylether,ethyleneglycoldimethylether,ethyleneglycoldiethyletherorpropyleneglycoln-butylether.
19.Theprocessofclaim2,whereintheorganicacidcomprisesoneormoreof:
.alpha.-hydroxycarboxylicacids,hydroxyaceticacid,glycolicacid,lacticacid,tartaricacid,glycericacid,malicacid,maleicacid,mandelicacid,citricacid,ascorbicacid,succinicacid,gluconicacid,formicacid,pyruvicacid,propanoicacid,palmiticacid,butyricacid,oxalicacid,fumaricacidoritaconicacid.
20.Theprocessofclaim19,whereintheorganicacidcomprisesthe.alpha.hydroxycarboxylicacidandthe.alpha.-hydroxycarboxylicacidcomprisesoneormoreof:
.alpha.-hydroxyaceticacid,glycolicacid,lacticacid,tartaricacid,glycericacid,mandelicacidorcitricacid.
21.Theprocessofclaim1,whereinthehypophosphite-containingmaterialcomprisesoneormoreof:
sodiumhypophosphite,calciumhypophosphiteorammoniumhypophosphite.
22.Theprocessofclaim1,whereinthealuminumalloymaterialislongilateralorirregularinshape
Description
FIELDOFTHEINVENTION
Thisinventionrelatestoprocessesforelectropolishingaluminumoraluminumalloymaterials.
BACKGROUNDOFTHEINVENTION
Inmanyaluminumpolishingprocesses,thealuminummaterialispolishedusingachemicalprocessthatdoesnotrequireelectricitytoeffectuatepolishing.However,suchpolishingprocessestypicallyusehightemperaturesandmayrequiretheuseofascrubbertoremovenitrousoxidefumesproducedbythenitricacidandphosphoricacidcomponentsthatcanbeusedinsuchchemicalprocess.Suchprocessescanalsobeundesirableduetoenvironmentalconcerns.
Whileprocessesusingelectricity,i.e.,electropolishingprocesses,havebeenusedtopolishstainlesssteelmetalsurfaces,processesforelectropolishingaluminum,inparticular,aluminumalloymetalsurfaces,havemetwithlimitedsuccessduetothegeneralrequirementforhazardousorfumeproducingchemicals,theneedforlargeamountsofelectricitytobeappliedtoeffectthepolishingoradverseeffectsonthemetalsurfacecausedby,forexample,etchingofthesurface.
Itwouldbedesirabletohaveprocessesforelectropolishingaluminum,inparticular,aluminumalloymaterials,thatdonotresultinnoxiousand/ortoxicfumes,useminimalelectricityanddonotetchthesurfaceofthemetalsurface.
SUMMARYOFTHEINVENTION
Inaccordancewiththepurposesofthisinvention,asembodiedandbroadlydescribedherein,thisinvention,inoneaspect,relatestoprocessesforelectropolishingaluminum,inparticular,aluminumalloymetalsurfaces,byimmersingthemetalsurfaceinapolishingsolutionandmakingthealuminumalloymaterialanodic.Thepolishingsolutioncancompriseaphosphoricacidsolutionandahypophosphite-containingcompound.Thepolishingsolutioncanalsocompriseapolyol,apolyoletherandanorganicacid.
Additionaladvantagesoftheinventionwillbesetforthinpartinthedescriptionwhichfollows,andinpartwillbeobviousfromthedescription,ormaybelearnedbypracticeoftheinvention.Theadvantagesoftheinventionwillberealizedandattainedbymeansoftheelementsandcombinationsparticularlypointedoutintheappendedclaims.Itistobeunderstoodthatboththeforegoinggeneraldescriptionandthefollowingdetaileddescriptionareexemplaryandexplanatoryonlyandarenotrestrictiveoftheinventionasclaimed.
DESCRIPTIONOFTHEINVENTION
ThepresentinventionmaybeunderstoodmorereadilybyreferencetothefollowingdetaileddescriptionofparticularaspectsoftheinventionandtheExampleincludedtherein.
Beforethepresentcompounds,compositions,articles,devices,and/orprocessesaredisclosedanddescribed,itistobeunderstoodthatthisinventionisnotlimitedtospecificmethodsortoparticularreagentsunlessotherwisespecified,and,assuchmay,ofcourse,vary.Itisalsotobeunderstoodthattheterminologyusedhereinisforthepurposeofdescribingparticularembodimentsonlyandisnotintendedtobelimiting.
Asusedinthespecificationandtheappendedclaims,thesingularforms"
a,"
"
an"
and"
the"
includepluralreferentsunlessthecontextclearlydictatesotherwise.
Rangesmaybeexpressedhereinasfrom"
about"
oneparticularvalue,and/orto"
anotherparticularvalue.Whensucharangeisexpressed,anotherembodimentincludesfromtheoneparticularvalueand/ortotheotherparticularvalue.Similarly,whenvaluesareexpressedasapproximations,byuseoftheantecedent"
about,"
itwillbeunderstoodthattheparticularvalueformsanotherembodiment.Itwillbefurtherunderstoodthattheendpointsofeachoftherangesaresignificantbothinrelationtotheotherendpoint,andindependentlyoftheotherendpoint.
Aweightpercentofacomponent,unlessspecificallystatedtothecontrary,isbasedontheweightoftheformulation
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