Aluminium anodizing (kev kho mob anodizing) yog kev kho saum npoo av los tiv thaiv cov khoom ntawm cov khoom siv txhuas. Nws daim ntawv thov yog qhov dav heev, thiab nws tuaj yeem hais tau tias yuav luag tag nrho cov khoom lag luam txhuas siv nws. Cia peb saib cov yam ntxwv, qhov zoo, thiab qhov tsis zoo ntawm aluminium anodized.
Cov yam ntxwv ntawm aluminium anodizing (kev kho anodizing)
Aluminium anodizing yog txheej txheem ntawm kev tsim cov oxide zaj duab xis rau saum npoo ntawm txhuas.
Feem ntau hais lus, txhuas tau pom tias yog cov hlau uas tsis yooj yim rau xeb, tab sis qhov tseeb, txhuas nws tus kheej muaj lub siab nyiam ionize thiab muaj cov cuab yeej yooj yim ua rau muaj ntau yam tshuaj xws li dej thiab oxygen. Yog li ntawd, tom qab nkag mus rau hauv huab cua, nws yuav ua ke nrog cov pa oxygen nyob rau hauv cov huab cua los tsim ib tug nyias oxide zaj duab xis hu ua alumina (AL2O3), los yog bauxite, uas yog yus muaj los ntawm cov tshuaj muaj zog heev zog. Yog li ntawd, nws tsis tsuas yog muaj cov tshuaj antioxidant, tab sis kuj tiv thaiv kev yaig los ntawm cov kua thiab cov kua qaub, ua rau nws tsis tshua muaj peev xwm ua rau lwm yam tshuaj lom neeg. Yog li ntawd, txawm tias tsis muaj kev kho tshwj xeeb, cov oxide zaj duab xis txheej ntawm lub ntsej muag txhuas muaj cov cuab yeej tiv thaiv sab hauv los ntawm corrosion. Qhov no yog vim li cas aluminium yog suav tias yog cov hlau tsis xeb. Yog li ntawd, cov hlau nrog cov khoom sab hauv tiv thaiv los ntawm cov yeeb yaj kiab uas tshwm sim nyob rau saum npoo yog hu ua inactive states. Txawm li cas los xij, qhov no tshwm sim oxide zaj duab xis tsuas yog hais txog 2nm, nyias nyias, thiab txawm tias khawb me ntsis tuaj yeem nthuav tawm sab hauv substrate. Yog li ntawd, nws tsis tuaj yeem cia siab tias yuav muaj qhov zoo tiv thaiv corrosion. Yog li ntawd, txhuas yog raug rau electrolytic kev kho mob rau artificially tsim ib tug thicker oxide zaj duab xis, uas yog hu ua txhuas anodizing. Ntxiv nrog rau sulfuric acid thiab chromic acid, txhuas kuj tuaj yeem muab tso rau hauv cov kua qaub aqueous xws li phosphoric acid thiab oxalic acid. Aluminium yog muab tso rau ntawm lub anode (zoo electrode) sab rau electrolysis, thiab vim oxidation cov tshuaj tiv thaiv tshwm sim nyob rau hauv lub anode, ib tug oxide zaj duab xis yuav tsim nyob rau saum npoo ntawm txhuas. Yog li qhov kev kho no tseem hu ua aluminium anodizing kho. Kuj tseem hu ua anodizing kev kho mob. Lub thickness ntawm cov oxide zaj duab xis tsim los ntawm txhuas anodizing yog nyob nruab nrab ntawm 5 thiab 70 μ m, nrog ib tug honeycomb zoo li cov qauv thiab cov me me qhov nyob rau hauv ib tug tsis tu ncua qauv ntawm qhov chaw ntawm lub hexagonal unit. Lwm tus yam ntxwv ntawm aluminium anodizing yog tias cov oxidized workpiece muaj xws li ib tug nyias zaj duab xis ib feem uas tsub kom sab nraud ntawm lub hauv paus cov ntaub ntawv, raws li zoo raws li ib feem uas nkag mus rau sab hauv los ntawm qhov chaw ntawm lub hauv paus khoom. Yog li ntawd, thaum anodizing qhov chaw tom qab anodizing, aluminium oxide txheej yuav tsum tau tev tawm ib zaug kom txo cov thickness ntawm substrate thiab ua kom nws thinner. Vim yog qhov thib ob anodizing, zaj duab xis yuav ntxiv rau sab nrauv, thiab qhov ntev ntawm cov khoom yuav hloov. Piv txwv li, nyob rau hauv cov qauv dawb txhuas anodizing, vim cov yeeb yaj kiab thickness ntawm txhuas anodizing yog li ntawm 10 μ m, qhov loj ntawm qhov saum npoo yuav nce mus txog 5 μ m tom qab txhuas anodizing. Nws yuav tsum tau muab sau tseg tias nyob rau hauv lub hnab qhov xws li cov ntsia hlau qhov tsis muaj kev nkag mus, txawm yog hais tias degreasing kev kho mob ua ntej, txiav cov roj tej zaum yuav tseem nyob twj ywm nyob rau hauv lub qhov, thiab tej zaum cov kev daws teeb meem no yuav tsuag tawm thaum lub sij hawm txhuas anodizing. Nyob rau hauv lub hnab zoo li lub qhov xws li tsis yog los ntawm threaded qhov, txawm yog hais tias degreasing kev kho mob yog nqa tawm ua ntej, txiav roj kuj tseem nyob rau hauv lub qhov. Qee zaum, cov kev daws teeb meem no tuaj yeem tawm thaum lub sijhawm anodizing, yog li yuav tsum tau ceev faj.
Hom ntawm Aluminium Anodizing
Aluminium anodizing tuaj yeem muab faib ua ntau hom raws li xim thiab qhov chaw. Hauv qab no yog peb tus neeg sawv cev tshaj plaws.
Dawb aluminium anodizing: Nws yog cov txheej txheem ntau tshaj ntawm txhuas anodizing. Nws yuav tsis tshwm dawb, tab sis nws yuav ua rau cov tsos ntawm lub substrate me ntsis npub. Lub thickness ntawm zaj duab xis yog hais txog 10 μ m.
Dub aluminium anodizing: Aluminium anodizing yog dyed nyob rau hauv cov xim sib txawv. Ib qho dyed dub yog hu ua dub aluminium anodizing. Nws yog txoj kev siv ntau tshaj plaws rau anodizing xim txhuas.
Aluminium anodizing (matte): Yog tias cov khoom siv sandblasted ua ntej kev kho aluminium anodizing, cov nyhuv matte yuav raug tsim. Nws muaj cov khoom zoo nkauj tshwj xeeb hauv aluminium anodizing, thiab tuaj yeem dyed tsis yog dawb xwb tab sis kuj muaj ntau xim.
Qhov zoo ntawm aluminium anodizing
Ntxiv nrog rau kev tiv thaiv corrosion ntawm aluminium, aluminium anodizing muaj ntau yam zoo.
Tsis muaj shedding: Aluminium anodizing hlob thiab integrates thaum eroding lub hauv paus khoom. Yog li ntawd, tsis zoo li electroplating thiab txau, tsis tas yuav txhawj xeeb txog cov txheej txheem oxide ntog.
Muaj zog corrosion kuj, xim hloov tsis kam, thiab corrosion kuj: Lub ntsiab tivthaiv ntawm txhuas oxide (AL2O3) yog alumina, uas muaj cov tshuaj ruaj khov thiab tsis yooj yim reactive nrog lwm yam tshuaj. Tsis tas li ntawd, los ntawm kev sib khi lub honeycomb qhov tsim ntawm oxide zaj duab xis, nws tuaj yeem muaj kev tiv thaiv corrosion ntau dua. Qhov no yuav tiv thaiv tsis muaj xim thiab corrosion.
Cov oxide zaj duab xis yog ib qho nyuaj heev thiab muaj zog hnav tsis kam: aluminium nws tus kheej yog ib qho muag muag, yooj yim rau txheej txheem thiab deform hlau. Lub hardness saum npoo tsuas yog nyob ib ncig ntawm HV20 ~ 150. Txawm li cas los xij, vim qhov tseeb tias txhuas oxide yog cov khoom siv tawv heev, qhov tawv tawv ntawm txhuas tom qab anodizing tuaj yeem nce mus rau ib puag ncig HV200-600. Yog li ntawd, nws qhov zoo dua yog muaj zog hnav tsis kam. Tshwj xeeb tshaj yog rau cov ntaub ntawv nyuaj aluminium anodized nrog cov yeeb yaj kiab tuab tshaj 20 μ m, lawv cov hardness ntau dua HV400, thiab lawv cov tawv tawv tuaj yeem dhau ntawm cov hlau tsis muaj steel. Yog li ntawd, nws kuj tseem siv tau rau zawv zawg Cheebtsam xws li shafts.
Nws tuaj yeem pleev xim rau ntau yam xim thiab muaj qhov zoo nkauj zoo nkauj: raws li tau hais ua ntej, cov yeeb yaj kiab nyias tsim los ntawm txhuas anodizing tau teem caij tsis tu ncua micropores. Nws tuaj yeem adsorb dyes thiab tuaj yeem pleev xim rau hauv ntau yam xim, uas kuj yog ib qho zoo ntawm aluminium anodizing. Cov xim ntawm aluminium anodizing yog tiav los ntawm immersing qhov chaw nyob rau hauv ib tug dissolved coloring neeg sawv cev tov tom qab electrolytic kho thiab ua ntej sealing lub honeycomb qhov. Qhov no tuaj yeem ua rau lub ntsej muag zoo nkauj nrog lub ci xim hlau ci uas txawv ntawm cov txheej txheej, uas kuj yog ib qho ntawm nws cov yam ntxwv. Tsis tas li ntawd, vim lub siab tawv ntawm aluminium anodizing nws tus kheej, nws qhov chaw zoo nkauj tsis yooj yim puas, uas kuj yog nws tus yam ntxwv. Yog li ntawd, cov khoom siv txhuas anodized feem ntau yog siv rau hauv cov teb uas xav tau kom zoo nkauj zoo nkauj, xws li lub tsev sab nrauv thiab lub tshuab sab nrauv.
Muaj zog rwb thaiv tsev thiab tsis-conductive: Aluminium oxide zaj duab xis tsim los ntawm anodizing aluminium yog non-conductive. Aluminium nws tus kheej muaj cov conductivity siab, tab sis tom qab aluminium anodizing kev kho mob, nws muaj cov khoom rwb thaiv tsev. Ntawm qhov tsis sib xws, yog tias xav tau, cov txheej txheem aluminium anodized tuaj yeem raug tshem tawm los ntawm kev txiav lossis lwm txoj hauv kev los nthuav tawm cov khoom siv hauv paus.
Tsawg thermal conductivity tab sis siab kub dissipation: Aluminium anodizing muaj thermal conductivity tsawg thiab thermal rwb thaiv tsev zog. Ntawm qhov tod tes, anodized aluminium muaj cov yam ntxwv ntawm cov hluav taws xob siab (xws li cov hluav taws xob deb infrared) thiab cov cua kub dissipation. Yog li ntawd, anodized txhuas feem ntau yog siv los ua cov cua kub dissipation xws li radiator.
Disadvantages ntawm aluminium anodizing
Txawm hais tias aluminium anodizing muaj ntau qhov zoo, nws kuj muaj qee qhov tsis zoo thiab cov teeb meem uas yuav tsum tau sau tseg.
Siab brittleness, tsis txaus toughness: Aluminium anodizing tsim ib txheej nyias nyias zaj duab xis. Yog li ntawd, aluminium anodizing nws tus kheej muaj qhov tsis zoo ntawm qhov tsis txaus toughness thiab siab fragility. Yog tias kev kho qhov drilling lossis khoov tau ua tiav tom qab kev kho aluminium anodizing, nws yuav ua rau cov yeeb yaj kiab tawg lossis txheej txheej aluminium anodizing tev tawm ntawm qhov tawg. Yog li nws yog qhov zoo tshaj plaws los ua kom tiav cov txheej txheem ntawm lwm cov nta ua ntej kev kho aluminium anodizing, tab sis thaum yuav cov ntaub ntawv tom qab anodizing kev kho thiab kev ua tiav, kev saib xyuas yuav tsum tau them rau seb cov oxide txheej puas puas.
Tsawg tshav kub tsis kam: Vim lub brittleness ntawm anodized aluminium txheej, nws qhov tsis zoo yog tias nws tsis tuaj yeem tiv taus qhov deformation thiab expansion shrinkage ntawm cov khoom hauv paus. Tshwj xeeb tshaj yog txij li aluminium substrate yog cov khoom siv uas ua rau thermal expansion, tawg thiab tev tawm tuaj yeem tshwm sim hauv cov txheej txheem aluminium anodized nyob rau hauv ib puag ncig uas kub tshaj 100 degree. Txawm hais tias anodized aluminium nws tus kheej yog qhov ruaj khov thiab muaj zog nyias zaj duab xis txheej, cov khoom ntawm nws cov substrate aluminium inevitably cuam tshuam rau nws. Thov nco ntsoov tias nws tsis haum rau siv nyob rau hauv ib puag ncig uas muaj qhov kub thiab txias los yog qhov kub thiab txias hloov.