Nkag Siab Txog Sulfuric Acid Anodizing Ntawm Aluminium Profiles
Cov txheej txheem sulfuric acid anodizing yog ib qho kev kho mob tseem ceeb ntawm cov txhuas profiles, uas feem ntau siv los txhim kho kev tiv thaiv corrosion, txhim kho qhov nyuaj ntawm qhov chaw, thiab tso cai rau kev ua haujlwm ntxiv ntawm txhuas los ntawm kev zas xim lossis kaw. Cov txheej txheem ua haujlwm los ntawm kev muab cov txhuas profiles tso rau hauv lub dab dej anodizing uas muaj sulfuric acid (H₂SO₄) ua electrolyte. Ib qho chaw fais fab DC sab nraud siv, nrog rau txhuas ua tus anode thiab cov khoom siv zoo li txhuas lossis txhuas ua cathode.
Cov Tshuaj Tiv Thaiv Hluav Taws Xob thiab Kev Tsim Cov Yeeb Yaj Kiab Oxide
Cov txheej txheem sulfuric acid anodize tsim cov txheej txhuas oxide (Al₂O₃) los ntawm kev tswj hwm electrochemical oxidation. Ntawm lub anode, qhov chaw txhuas reacts raws li qhov kev ua kom yooj yim:
2 Al (s) + 3 H₂O (l) → Al₂O₃ (s) + 6 H⁺ (aq) + 6 e⁻
Qhov no tsim cov zaj duab xis oxide uas muaj ob txheej. Ua ntej, ib txheej uas tsis muaj qhov porous, nyias nyias tsim los ntawm kev sib cuag ncaj qha nrog cov hlau txhuas, muab cov khoom dielectric thiab kev tiv thaiv xeb thawj zaug. Thaum anodizing txuas ntxiv mus, ib txheej oxide tuab dua, porous tsim tawm sab nraud, uas muaj cov yam ntxwv ntawm cov hlwb hexagonal uas sib dhos ua ke thiab cov qhov ntsug. Cov qhov pores no yog tsim los ntawm kev sib txuas ntawm cov zaj duab xis oxide los ntawm cov electrolyte sulfuric acid ntawm lub hauv paus ntawm txhua qhov pore, sib npaug nrog kev loj hlob ntawm oxide uas tsav los ntawm kev hloov pauv oxygen thiab kev tsiv teb tsaws chaw ntawm cov hlau / oxide interface. Cov geometry ob txheej no yog qhov tseem ceeb rau kev nqus cov xim zoo, kev sib khi, thiab kev ua kom ruaj khov ntawm cov profiles anodized txhuas.
Anodizing Aluminium - Hlau Nto Finishing
*
Qhov Tseem Ceeb ntawm Anodizing Bath Chemistry thiab Concentration Control
Qhov ua tau zoo thiab kev ua tau zoo ntawm cov txheej txheem sulfuric acid anodizing rau txhuas yog khi ze rau cov tshuaj lom neeg ntawm lub dab da dej anodizing, tshwj xeeb tshaj yog sulfuric acid thiab cov txhuas yaj. Kev tswj cov kev ntsuas no yog qhov tseem ceeb rau kev tsim cov yeeb yaj kiab oxide zoo sib xws, zoo nrog cov tuab, qhov nyuaj, thiab kev tiv thaiv corrosion.
Kev Sib Raug Zoo Ntawm Anodizing Bath Concentration thiab Oxide Film Properties
Qhov concentration ntawm sulfuric acid hauv lub da dej anodizing ncaj qha txiav txim siab qhov tuab ntawm cov zaj duab xis aluminium oxide. Thaum cov concentration ntawm sulfuric acid qis dua (qis dua 10 wt%), qhov nrawm ntawm kev loj hlob ntawm cov txheej oxide ntau dua li nws cov tshuaj yaj, ua rau muaj cov txheej aluminium oxide tuab dua thiab sib xws dua. Thaum cov concentration ntawm acid nce mus rau cov nqi txheej txheem ib txwm muaj (10–20 wt%), qhov tuab ntawm cov zaj duab xis oxide feem ntau txo qis vim tias cov acid cov nyhuv yaj ua rau pom tseeb dua, ncav cuag qhov sib npaug uas kev loj hlob thiab kev yaj sib npaug. Tshaj 20 wt%, kev yaj tshuaj sai dua - ua rau cov zaj duab xis nyias dua thiab qee zaum, cov zaj duab xis pitting lossis cov qauv tsis zoo.
Kev hloov pauv ntawm qhov concentration ntawm anodizing da dej kuj cuam tshuam rau cov qauv thiab porosity ntawm cov txheej oxide. Cov concentration qis dua ua rau cov khaubncaws sab nraud povtseg me me, cov qhov me me thiab cov nplaim du - qhov tseem ceeb rau kev rwb thaiv hluav taws xob siab thiab cov khoom thaiv. Cov concentration ntawm sulfuric acid ib txwm tsim cov qauv porous tus qauv uas xav tau rau kev nqus xim thiab txheej ntxiv. Txawm li cas los xij, cov theem acid siab dua ua rau cov qhov loj dua, tsis sib xws thiab ua rau qhov chaw ntxhib ntxiv, ua rau cov zaj duab xis tsis sib xws thiab kev ua haujlwm zoo.
Cov txhuas yaj, ib yam khoom seem ntawm kev anodizing tas mus li, hloov pauv cov tshuaj lom neeg hauv chav dej raws sijhawm. Cov qib txhuas siab tuaj yeem cuam tshuam kev loj hlob ntawm oxide, txo cov zaj duab xis tuab, thiab cuam tshuam rau cov qauv ntawm cov qhov. Yog li, kev tswj hwm zoo thiab kev tshem tawm cov txhuas yaj tsis tu ncua yog qhov tsim nyog rau kev ua haujlwm sib xws.
Kev cuam tshuam rau Anodic Oxide Film Hardness thiab Corrosion Resistance
Qhov tawv ntawm zaj duab xis anodic oxide thiab kev tiv thaiv xeb yog txuas ncaj qha rau cov tshuaj lom neeg hauv chav dej. Qhov concentration ntawm sulfuric acid zoo tshaj plaws (feem ntau yog 10–20 wt%) txhawb cov zaj duab xis nrog qhov porosity sib npaug thiab cov phab ntsa cell muaj zog, ntom ntom, ua kom qhov nyuaj ntawm cov khoom siv kho tshuab siab tshaj plaws thiab muab kev tiv thaiv xeb zoo. Qhov concentration tsis zoo tshaj plaws (tsis tshua muaj lossis siab dhau) ua rau cov zaj duab xis porosity ntau dhau, cov qauv tsis muaj zog, thiab nce qhov tsis zoo, tag nrho cov no ua rau qhov nyuaj thiab tso cai rau cov xov xwm phem lossis cov pa phem nkag mus rau hauv cov txheej, txo qhov kev tiv thaiv xeb.
Rau cov ntawv thov uas xav tau kev oxidation txhuas anodic ntev, xws li cov khoom siv architectural lossis aerospace, kev ntsuas kom zoo - siv lub ntsuas sulfuric acid concentration zoo li Lonnmeter - thiab kev hloov kho ntawm sulfuric acid thiab txhuas yog qhov tseem ceeb kom tswj tau cov khoom zoo ntawm qhov chaw.
Cov txiaj ntsig ntawm Kev Sib xyaw ua ke ntawm Chav Dej Tsis Sib Npaug
Yog tias cov tshuaj lom neeg da dej anodizing tsis sib xws ntawm cov qib pom zoo, ntau qhov tshwm sim tsis zoo tshwm sim:
- Kev ua haujlwm tsis zoo ntawm anodizing:Cov kua qaub sulfuric lossis cov txhuas ntau dhau tuaj yeem ua rau qeeb lossis tsis ruaj khov ntawm cov zaj duab xis aluminium oxide, ua rau tsis sib xws ntawm oxidation thiab tsis ua haujlwm zoo hauv cov txheej txheem sulfuric acid anodizing.
- Txo cov yeeb yaj kiab kom ruaj khov thiab ua haujlwm tsis sib xws:Yog tias muaj cov kua qaub lossis hlau ntau dhau, cov zaj duab xis anodic no yuav tawg yooj yim, tuab thiab yooj yim tawg, thiab yuav tsis yooj yim puas. Cov qhov tsis zoo no ua rau lub neej ntawm cov khoom siv thiab kev ntseeg siab ntawm cov khoom siv tsawg dua, uas yog qhov tseem ceeb rau kev kho cov khoom siv aluminium uas tiv taus xeb.
Txhawm rau kom ntseeg tau tias txhua qhov txiaj ntsig ntawm anodizing txhuas nrog sulfuric acid - qhov siab tshaj plaws ntawm cov txhuas oxide zaj duab xis tuab, txhim kho anodic oxide zaj duab xis hardness, thiab zoo dua oxide zaj duab xis corrosion tsis kam - txuas ntxiv muskev ntsuas qhov concentration ntawm sulfuric acidHauv lub dab da dej anodizing thiab kev tswj hwm cov txhuas yaj uas yaj zoo yog qhov tseem ceeb heev. Txoj kev qhuab qhia no tiv thaiv kev poob qis ntawm kev ua tau zoo thiab txhawb nqa cov qauv siab hauv cov txheej txheem anodizing txhuas rau kev tiv thaiv xeb thiab ua tiav qhov chaw ruaj khov.
Cov Txheej Txheem rau Kev Ntsuas H2SO4 Concentration hauv Anodizing Baths
Kev ntsuas qhov concentration ntawm sulfuric acid kom raug yog qhov tseem ceeb rau kev tswj cov txheej txheem anodizing sulfuric acid zoo. Qhov concentration ntawm anodizing da dej kom raug ua kom muaj qhov tuab ntawm cov zaj duab xis aluminium oxide thiab kev tiv thaiv xeb ntawm cov txhuas anodized txhim khu kev qha.
Cov Txheej Txheem Titration: Cov Txheej Txheem Ua Tau Zoo thiab Kev Txhais Lus
Kev ntsuas sodium hydroxideyog txoj hauv kev tshuaj lom neeg tseem ceeb rau kev ntsuas sulfuric acid hauv cov anodizing baths. Cov txheej txheem tseem ceeb suav nrog:
Kev Sau thiab Npaj Cov Qauv:
Siv cov khob iav huv thiab qhuav los sau cov qauv da dej. Lim yog tias tsim nyog kom tshem tawm cov khoom me me. Ntxiv dej lim kom sib xyaw kom txog thaum cov kua qaub ntau.
Cov Khoom Siv thiab Cov Tshuaj Uas Yuav Tsum Muaj:
- Cov kua sodium hydroxide (NaOH): feem ntau yog 0.1 N lossis 0.5 N
- Qhov Qhia: methyl txiv kab ntxwv rau cov da dej muaj xim/tsis huv (qhov kawg ntawm pH ≈ 4.2); phenolphthalein rau cov da dej ntshiab (qhov kawg ntawm pH ≈ 8.2–10)
- Burette, pipette, conical flask, calibrated volumetric glassware
Cov Txheej Txheem Titration:
- Ntxiv ib qho ntim qauv uas paub lawm (piv txwv li, 10 mL) rau hauv lub raj mis
- Ntxiv 2-3 tee ntawm cov tshuaj indicator
- Sau lub burette nrog NaOH, sau qhov ntim pib
- Titrate cov qauv, swirl tas li, saib qhov xim hloov pauv ntawm qhov ntsuas
- Methyl txiv kab ntxwv hloov ntawm liab mus rau daj ntawm qhov kawg; phenolphthalein los ntawm tsis muaj xim mus rau liab dawb
- Sau cov NaOH ntim siv
Cov Teeb Meem Hauv Kev Sau Qauv Los Ntawm Tes Thiab Kev Ntseeg Tau Cov Txiaj Ntsig:
Kev kuaj tes ua rau muaj kev hloov pauv. Kev ntxuav tsis zoo tuaj yeem ua rau cov qauv paug, ua rau nyeem tsis raug. Cov chav dej anodizing uas muaj xim ntau lossis muaj kuab paug ua rau kev soj ntsuam qhov kawg nyuaj. Hauv cov xwm txheej zoo li no, kev ntsuas potentiometric (siv lub ntsuas pH) tuaj yeem ua rau qhov tseeb dua. Kev ntsuas dawb paug yog qhov tseem ceeb los suav nrog cov khoom tsis huv ntawm cov tshuaj reagent. Qhov tsos ntawm qhov kawg tuaj yeem raug zais rau hauv cov chav dej uas muaj cov hlau, cov xim zas, lossis cov av qias neeg, cuam tshuam rau kev kho qhov chaw ntawm cov profile txhuas thiab kev tiv thaiv xeb ntawm cov yeeb yaj kiab oxide. Cov burettes tsis siv neeg thiab cov chaw titration niaj hnub (digital lossis potentiometric) tau nyiam ntau dua rau cov txiaj ntsig rov ua dua hauv kev ua haujlwm siab.
Hauv onlineCov Ntsuas Ntsuas H2SO4 Tsis Siv Neeg
Cov ntsuas concentration sulfuric acid online—xws li cov los ntawm Lonnmeter—ua kom muaj kev soj ntsuam tas mus li ntawm cov tshuaj lom neeg hauv chav dej anodizing. Cov khoom siv no ntsuas cov qib H₂SO₄ ncaj qha hauv chav dej, tshem tawm cov kev ua yuam kev kuaj thiab kev ncua sijhawm.
Yuav Ua Li Cas Kev Ntsuas Hauv Qhov Chaw Txhim Kho Kev Ua Haujlwm Sib Xws:
Cov ntaub ntawv tiag tiag ua rau cov neeg teb xov tooj tuaj yeem tswj cov txheej txheem sulfuric acid anodizing kom nyob rau hauv qhov zoo tshaj plaws. Kev taug qab tas mus li tiv thaiv kev hloov pauv uas yuav ua rau muaj kev hloov pauv ntawm cov tuab ntawm zaj duab xis aluminium oxide lossis qhov nyuaj ntawm zaj duab xis anodic oxide. Qhov no txo cov kev pheej hmoo ntawm cov txheej txheem mos, tsis zoo lossis oxidation hnyav dhau, pab txhawb rau kev ua kom cov txheej txheem anodic aluminium anodized ntev.
Kev koom ua ke nrog Kev Tswj Xyuas Txheej Txheem Lub Sijhawm Tiag Tiag thiab Cov Lus Teb Rov Qab:
Cov ntsuas sulfuric acid concentration niaj hnub no sib xyaw nrog cov tshuab tswj hwm cog. Cov ntsiab lus teeb tsa tuaj yeem siv tau, ua rau muaj kev ntxiv acid lossis kev dilution dej yog tias qhov concentration ntawm lub da dej anodizing poob qis. Cov voj voog rov qab tswj hwm cov xwm txheej ua haujlwm - qhov tseem ceeb rau kev ua kom zoo dua cov tshuaj lom neeg ntawm lub da dej anodizing thiab txhim kho kev tiv thaiv xeb ntawm cov txhuas anodized. Kev saib xyuas tas mus li txhawb nqa cov txheej txheem anodizing txhuas rau kev tiv thaiv xeb thiab ua kom muaj kev tiv thaiv xeb ntawm cov yeeb yaj kiab oxide ruaj khov.
Hauv cov chaw muaj neeg coob heev, kev ntsuas online ua kom ntseeg tau tias kev tswj hwm lub dab dej sulfuric acid anodizing muaj zog, txo qis kev cuam tshuam tes thiab txhawb nqa kev kho qhov chaw ntawm cov txhuas profiles. Qhov no ua rau cov khoom zoo dua thiab ua haujlwm tau zoo dua.
Kev Soj Ntsuam Lub Sijhawm Tiag Tiag ntawm Cov Cheebtsam Da Dej Anodizing
Kev saib xyuas tas mus li ntawm lub dab da dej anodizing yog qhov tseem ceeb rau kev tswj cov yam ntxwv tseem ceeb hauv cov txheej txheem sulfuric acid anodizing. Kev ua tiav cov yeeb yaj kiab oxide zoo xav tau kev tswj hwm meej ntawm cov sulfuric acid concentration thiab cov txhuas yaj.
Cov Txheej Txheem Tshawb Fawb Txuas Ntxiv Rau Sulfuric Acid Thiab Cov Aluminium Yaj
Cov nroj tsuag anodizing niaj hnub siv ntau txoj kev tshuaj xyuas tas mus li kom tswj tau qhov zoo tshaj plaws ntawm cov khoom siv da dej:
Cov Sensors Inline thiab Digital Probes rau Kev Ntsuas H2SO4 Concentration
Cov cuab yeej ntsuas hauv kab—xws li cov ntsuas pH thiab cov khoom siv hluav taws xob—muab cov lus teb tas mus li ntawm H2SO4 qhov concentration. Qee lub tshuab muaj cov algorithms siab heev uas sib txuas cov ntaub ntawv teeb liab ncaj qha rau cov qib sulfuric acid. Cov khoom siv xws li lub ntsuas sulfuric acid concentration, suav nrog cov khoom lag luam uas Lonnmeter muab, yog tsim tshwj xeeb rau kev tswj hwm sulfuric acid anodizing da dej. Lawv tuaj yeem ntsia ncaj qha rau hauv lub voj voog ncig lossis lub tank kom tsim cov ntawv nyeem tam sim ntawd, muab cov ntaub ntawv ua tau rau kev kho da dej thiab xyuas kom meej tias muaj kev ua raws li cov txheej txheem sulfuric acid anodizing.
Lub peev xwm nrhiav tau tam sim ntawd no nthuav dav mus rau cov txhuas yaj. Cov sensors siv kev ntsuas potentiometric ntsuas cov ntsiab lus ntawm txhuas los ntawm cov tshuaj tiv thaiv electrochemical tshwj xeeb uas cuam tshuam nrog cov tshuaj anodizing da dej. Kev koom ua ke ntawm cov probes no nrog cov tshuab tswj cog tso cai rau kev ntsuas tshuaj tsis siv neeg, uas cuam tshuam ncaj qha rau qhov tseeb thiab kev sib xws ntawm cov yeeb yaj kiab txhuas oxide.
Cov txiaj ntsig ntawm kev saib xyuas lub sijhawm tiag tiag rau kev ua haujlwm da dej ruaj khov
Kev siv cov cuab yeej saib xyuas tas mus li muab cov txiaj ntsig tseem ceeb rau cov txheej txheem sulfuric acid anodize:
Kev Tiv Thaiv Kev Hloov Pauv ntawm Parameter
Cov kua qaub sulfuric thiab cov txhuas yaj tuaj yeem hloov pauv sab nraud ntawm cov chaw teeb tsa vim yog kev siv maj mam lossis kev sib sau ua ke. Kev ntsuas cov kua qaub sulfuric tas mus li nrog cov cuab yeej ntsuas online lossis cov ntsuas hauv kab tiv thaiv kev txav mus los ntsiag to, uas yuav cuam tshuam rau qhov tuab thiab qhov tawv ntawm cov zaj duab xis anodic oxide. Cov tshuaj lom neeg ruaj khov ua rau lub sijhawm ntev thiab kev tiv thaiv xeb ntawm cov txhuas anodized.
Kev Tshawb Pom Tam Sim Ntawm Kev Hloov Pauv Cuam Tshuam Rau Cov Txheej Txheem Anodizing
Tam sim ntawd, cov khoom siv tshuaj ntsuam thiab cov sensors ntes tau txhua qhov kev hloov pauv ntawm cov dej da dej - xws li cov kua qaub sulfuric poob qis lossis cov hlau txhuas yaj - uas ua rau muaj kev phom sij rau qhov zoo ntawm cov zaj duab xis oxide. Cov lus ceeb toom raug qhib tam sim ntawd, tso cai rau kev kho ua ntej muaj qhov tsis zoo kim heev. Kev sib xws hauv cov txheej txheem kho saum npoo ntawm txhuas tau khaws cia, ua kom zoo dua qub kev tiv thaiv xeb ntawm txhuas anodized thiab tsim cov txiaj ntsig zoo sib xws hauv txhua pawg.
Piv txwv li, yog tias cov txhuas yaj ntau tshaj qhov pom zoo, cov nag ntau dhau yuav ua rau cov hlau tawg lossis txo qhov kev ua tiav ntawm cov qauv. Kev saib xyuas tiag tiag ua kom muaj kev hloov kho sai, tiv thaiv kev tiv thaiv xeb ntawm cov yeeb yaj kiab oxide thiab txhawb nqa kev tsim cov txheej txheem anodic oxidation txhuas uas kav ntev. Kev tswj hwm tsis siv neeg pab cov chaw tsim khoom ua tau raws li cov kev cai nruj rau cov tuab thiab qhov nyuaj ntawm cov yeeb yaj kiab anodic oxide, ncaj qha txhim kho ob qho tib si tsos thiab kev ua tau zoo.
Kev sib koom ua ke ntawm cov cuab yeej ntsuas titration online thiab cov ntsuas H2SO4 concentration hauv kab tshem tawm qhov tsis paub meej ntawm kev kuaj ntau ntau thiab kev ntsuas tus kheej. Lub kaw lus ruaj khov no ua rau muaj kev txhim kho zoo hauv kev tswj hwm qhov concentration ntawm lub dab da dej anodizing, kev siv tshuaj lom neeg zoo, thiab cov khoom zoo thoob plaws hauv cov txheej txheem anodizing txhuas rau kev tiv thaiv xeb.
Kev Sib Koom Tes Cov Ntsuas Sulfuric Acid Concentration hauv Kev Ua Haujlwm Anodizing
Cov Qauv Rau Kev Xaiv Lub Tshuab Ntsuas Sulfuric Acid Concentration
Cov txheej txheem anodizing sulfuric acid nyob ntawm kev tswj hwm qhov tseeb ntawm H₂SO₄ concentration. Kev xaiv lub ntsuas sulfuric acid concentration suav nrog kev soj ntsuam zoo ntawm peb yam tseem ceeb: qhov tseeb, kev sib xws, thiab kev saib xyuas.
Kev raugyog qhov tseem ceeb. Lub da dej anodizing ua haujlwm zoo tshaj plaws hauv 150–220 g / L H₂SO₄, thiab cov khoom oxide zaj duab xis - xws li tuab, tiv taus corrosion, thiab hardness - yog qhov rhiab heev rau qhov sib txawv ntawm cov kua qaub. Cov ntsuas yuav tsum ua tau raws li qhov tseeb tsawg kawg nkaus ntawm ± 2–4 g / L rau kev ua haujlwm niaj hnub. Rau cov kab txheej txheem siab heev, tshwj xeeb tshaj yog hauv aerospace lossis kev kho qhov chaw siab ntawm cov txhuas profiles, nrhiav cov khoom siv lossis cov txheej txheem uas muaj peev xwm tswj tau ± 1–2 g / L tswj. Cov ntsuas raws li kev coj ua yog qhov tshwm sim, tab sis lawv tsis tshua muaj kev ntseeg siab thaum txhuas sib sau ua ke; cov ntsuas qhov ceev (hydrometer) thiab cov txheej txheem siv titration muab qhov tseeb zoo dua hauv cov ntawv thov tseem ceeb.
Kev sib raug zoo nrog qhov chaw ua haujlwm tshwj xeebyog qhov tseem ceeb. Lub ntsuas yuav tsum tiv taus cov xwm txheej tshuaj lom neeg ntawm lub dab da dej anodizing, suav nrog cov kua qaub ntau thiab cov txhuas ion ntau. Cov khoom siv yuav tsum sib xws nrog cov txheej txheem them nyiaj kub, vim tias qhov kub ntawm lub dab da dej hloov pauv ntawm 2-3 ° C tuaj yeem ua rau muaj qhov yuam kev ntsuas ntau dua 5 g / L yog tias tsis kho. Cov ntsuas tsis tuaj yeem them nyiaj rau qhov kub lossis cov txhuas yaj yuav ua rau cov yam ntxwv tsis zoo ntawm cov zaj duab xis anodic oxide thiab tsis tuaj yeem tiv taus xeb.
Cov kev xav txog kev saib xyuassuav nrog kev yooj yim ntawm kev ntxuav, kev tiv thaiv sensor fouling, thiab muaj cov txheej txheem calibration zoo. Rau kev saib xyuas online, xaiv cov meters nrog kev ntxuav tsis siv neeg lossis rov kho dua kom txo qis kev hloov pauv. Cov txheej txheem tes, zoo li hydrometers, xav tau kev yaug tsis tu ncua nrog dej deionized kom tiv thaiv cov khoom seem. Muab qhov tseem ceeb rau cov meters los ntawm cov neeg muab kev pabcuam nrog cov ntaub ntawv taug qab rau cov sensors ntev thiab npaj txhij nkag mus rau cov khoom seem. Piv txwv li, Lonnmeter series muab kev ntsuas tiag tiag thiab yog tsim los rau cov txheej txheem tshuaj lom neeg hnyav.
Kev Koom Tes Nrog Cov Txheej Txheem Tswj Xyuas Uas Twb Muaj Lawmyuav tsum tau soj ntsuam. Cov kab txheej txheem sulfuric acid anodize niaj hnub no tau txais txiaj ntsig los ntawm cov meters uas tuaj yeem sib txuas nrog cov maub los digital, PLCs, lossis SCADA systems. Nrhiav cov cuab yeej muab cov txheej txheem tso zis txheem (piv txwv li, 4–20 mA lossis Modbus) rau kev saib xyuas thiab tswj cov txheej txheem sulfuric acid anodizing da dej. Qhov kev koom ua ke no tso cai rau kev hloov kho dosing tsis siv neeg kom tswj tau qhov zoo tshaj plaws anodizing da dej concentration thiab ua kom muaj kev tsim khoom ntawm cov yeeb yaj kiab txhuas oxide nrog lub hom phiaj tuab thiab kev tiv thaiv corrosion.
Cov Lus Qhia rau Kev Ntsuas Lub Sijhawm thiab Kev Tswj Xyuas Zoo Tshaj Plaws
Kev ntsuas cov kua qaub sulfuric zoo yuav tsum tau ua kom zoo thiab tswj cov txheej txheem. Cov kev coj ua zoo tshaj plaws suav nrog:
- Lub Sijhawm Calibration:Cov ntsuas kev coj ua thiab qhov ceev yuav tsum tau ntsuas raws li kev ntsuas hauv chav kuaj tsawg kawg yog txhua lub lim tiam hauv qab cov khoom siv ntau lawm. Yog tias ua haujlwm ze rau cov txheej txheem txwv lossis thaum muaj kev hloov pauv da dej ntau zaus, pom zoo kom ntsuas txhua hnub. Cov txheej txheem ntsuas yuav tsum suav nrog qhov nce ntawm cov txhuas yaj hauv lub dab dej, uas cuam tshuam rau kev nyeem ntawv sensor.
- Kev lees paub hla:Siv cov tshuab ntsuas tsis siv neeg ua tus qauv kub los siv thiab kho cov ntawv nyeem sensor online. Tsis tu ncua xyuas cov txiaj ntsig los ntawm cov 'meter' online nrog kev titration tes kom pom qhov txav mus los, tshwj xeeb tshaj yog tom qab kev saib xyuas da dej lossis cov txhuas tsim ntau tshaj 15–20 g/L.
- Kev Tswj Xyuas Zoo:Siv cov kev kuaj xyuas txhua hnub lossis txhua lub sijhawm ua haujlwm - kev tshuaj xyuas cov qauv kuaj, kev kuaj xyuas kev noj qab haus huv ntawm lub sensor, thiab kev tshuaj xyuas cov ntaub ntawv teev cia kub hauv chav dej. Sau tag nrho cov txiaj ntsig ntawm kev ntsuas thiab kev sim kom taug qab tau. Paub tseeb tias txhua lub 'meter' ua haujlwm tau zoo hauv lawv qhov ntau thiab tsawg thiab raug raws li cov xwm txheej tiag tiag.
Aluminium Anodizing
*
Cov Kauj Ruam Rau Kev Ua tiav Kev Kho Kom Zoo Tshaj Plaws ntawm Cov Profile Aluminium
Kev kho ua ntej: Kev ntxuav thiab kev txiav kom tau cov txiaj ntsig Anodizing sib xws
Kev kho ua ntej yog qhov tseem ceeb rau kev kho qhov chaw zoo ntawm cov txhuas profiles hauv cov txheej txheem sulfuric acid anodizing. Cov txheej txheem pib nrog kev ntxuav kom huv si (degreasing) kom tshem tawm cov roj, roj, thiab lwm yam organic contaminants. Qhov no feem ntau ua nrog cov tshuaj ntxuav alkaline ntawm 50-70 ° C rau 2-10 feeb, qee zaum txhim kho nrog ultrasonic agitation rau cov profiles nrog cov geometries nyuaj. Kev yaug zoo nrog dej deionized lossis softened tiv thaiv kev rov ua dua ntawm cov av thiab npaj qhov chaw rau cov kauj ruam tom ntej.
Tom qab ntawd, kev txiav ua raws li, siv cov tshuaj sodium hydroxide (NaOH) ntawm 30–100 g/L thiab 40–60°C, feem ntau yog li 2–10 feeb. Cov kauj ruam no tshem tawm ib txheej nyias ntawm txhuas, tshem tawm cov qhov tsis zoo ntawm qhov chaw, cov kab extrusion, thiab txhua cov yeeb yaj kiab oxide uas twb muaj lawm. Kev tswj hwm cov khoom sib xyaw hauv chav dej thiab lub sijhawm txiav kom tsis txhob muaj hlau poob ntau dhau thiab ua rau ntxhib, tswj tau qhov tseeb ntawm cov ntaub ntawv. Cov tshuaj ntxiv xws li cov tshuaj inhibitors tuaj yeem txo cov kev phiv tsis xav tau xws li hydrogen pickup. Tom qab txiav, qhov chaw txhuas feem ntau khaws cov khoom sib xyaw uas tsis yaj tau - hu ua smut - uas yuav tsum tau tshem tawm kom tau txiaj ntsig zoo tshaj plaws.
Kev tshem tawm cov xim av yog ua tiav nrog cov dej nitric lossis sulfuric acid (15–25% HNO₃; ntawm chav sov li 1–3 feeb). Tej zaum yuav muaj ammonium bifluoride rau cov hlau alloys uas muaj silicon lossis tooj liab ntau. Cov kauj ruam no ua kom muaj qhov chaw huv si thiab sib npaug. Kev yaug zaum kawg yog qhov tseem ceeb ua ntej anodizing kom tsis txhob muaj kuab paug rau cov dej anodizing tom qab.
Kev saib xyuas tas li ntawm cov khoom sib xyaw hauv chav dej, qhov kub thiab txias, thiab lub sijhawm ua haujlwm yog qhov tseem ceeb rau cov txiaj ntsig rov ua dua thiab tiv thaiv cov qhov tsis zoo ntawm qhov chaw xws li kab txaij lossis qhov. Cov kab niaj hnub siv cov sensors tiag tiag thiab cov dej ntxuav kaw-loop kom ua tau zoo tshaj plaws thiab txo qhov cuam tshuam rau ib puag ncig. Lub hom phiaj kawg yog cov profile txhuas huv si, sib npaug uas tsis muaj cov xim seem thiab npaj rau cov txheej txheem sulfuric acid anodize.
Anodizing: Tswj Xyuas Cov Kev Cai Da Dej Tseeb Thoob Plaws Oxide Film Growth
Kev tswj hwm qhov tseeb ntawm lub dab da dej anodizing yog qhov tseem ceeb rau kev tsim cov yeeb yaj kiab txhuas oxide nrog qhov nyuaj thiab tiv taus corrosion zoo tshaj plaws. Cov txheej txheem sulfuric acid anodizing vam khom kev tswj hwm cov kev cai nruj:
- Qhov concentration ntawm cov kua qaub sulfuric hauv lub dab da dej anodizing yuav tsum khaws cia rau hauv qhov ntau thiab tsawg uas tau teev tseg, feem ntau yog 150–220 g/L. Kev ntsuas qhov concentration ntawm cov kua qaub sulfuric tas mus li ua kom ntseeg tau tias qhov kev hloov pauv raug kho sai.
- Cov cuab yeej xws li Lonnmeter sulfuric acid concentration meter muab kev ntsuas h2so4 concentration sai thiab txhim khu kev qha, txhawb nqa ob qho tib si kev hloov kho da dej tes thiab tsis siv neeg.
- Qhov kub ntawm da dej feem ntau yog nyob nruab nrab ntawm 18 ° C thiab 22 ° C. Kev hloov pauv tuaj yeem cuam tshuam rau qhov tuab ntawm cov zaj duab xis txhuas oxide, kev sib xws, thiab qhov tsos.
- Qhov ceev tam sim no, feem ntau yog 1–2 A/dm² rau tus qauv anodizing, raug kho raws li hom alloy thiab qhov tuab oxide xav tau.
- Kev sib xyaw da dej ua kom ntseeg tau tias muaj kev faib tawm ntawm cov ion thiab kev tso cua sov tawm.
Kev tswj hwm lub dab da dej anodizing sulfuric acid ua tib zoo ua kom muaj kev loj hlob tas li ntawm cov zaj duab xis anodic oxide. Qhov no tso cai rau kev kho kom raug ntawm cov zaj duab xis aluminium oxide tuab (feem ntau 5–25 μm rau cov qauv vaj tsev thiab txog li 70 μm rau anodizing nyuaj) thiab ua kom ob qho tib si anodic oxide zaj duab xis hardness thiab oxide zaj duab xis corrosion tsis kam. Kev ntsuas lub sijhawm tiag tiag sulfuric acid concentration hauv lub dab da dej anodizing kuj pab tiv thaiv cov teeb meem xws li hlawv, cov zaj duab xis mos, lossis cov xim tsis zoo, ua rau muaj ntau yam txiaj ntsig ntawm anodizing txhuas nrog sulfuric acid.
Kev kho qhov concentration ntawm lub da dej anodizing zoo tshaj plaws yog qhov tseem ceeb rau kev ua haujlwm ntev, qhov twg kev rub dej yaug lossis kev sib sau ua ke ntawm cov hlau ion tuaj yeem ua rau lub da dej tsis huv lossis ua rau lub da dej tsis huv. Kev kho cov tshuaj lom neeg ntawm lub da dej anodizing sai thiab raug, uas tau txais kev qhia los ntawm kev ntsuas qhov concentration h2so4 ntau zaus, yog qhov tseem ceeb rau kev ua kom cov txheej oxide sib xws, ruaj khov.
Tom Qab Kho: Cov Txheej Txheem Sealing kom Xauv Tau Qhov Hardness thiab Kev Tiv Thaiv Corrosion
Tom qab anodizing, kev kho sealing kaw cov qauv porous ntawm cov txheej txhuas oxide tshiab, muab kev tiv thaiv ntev tiv thaiv xeb thiab ua kom cov zaj duab xis anodic oxide tawv. Cov txheej txheem sealing tseem ceeb rau anodized txhuas suav nrog:
- Kev kaw dej kub: Kev raus dej hauv dej uas yuav luag npau (96–100 ° C) rau 15–30 feeb ua rau cov oxide hydrates, tsim cov boehmite ruaj khov.
- Kev kaw cov xim nickel acetate: Siv cov tshuaj nickel acetate ntawm 85–95°C, txoj kev no txhim kho kev tiv thaiv xeb thiab kev ruaj khov ntawm xim, tshwj xeeb tshaj yog rau cov xim pleev xim.
- Kev kaw txias: Siv cov neeg sawv cev kaw tshwj xeeb ntawm qhov kub qis li 25–30 ° C thiab nws nyiam siv rau kev txuag hluav taws xob thiab kev xa khoom sai dua.
Qhov kev xaiv ntawm cov txheej txheem sealing nyob ntawm seb cov oxide ua haujlwm li cas, cov hom phiaj nqi, thiab cov kev xav tau siv kawg. Txhua txoj hauv kev yuav tsum tau saib xyuas kom zoo rau lub sijhawm, kub, thiab cov khoom siv da dej kom ntseeg tau tias muaj kev sib khi tiav. Kev sib khi tsis zoo tuaj yeem ua rau kev tiv thaiv xeb qis dua thiab txo qhov nyuaj ntawm zaj duab xis, ua rau ob qho tib si zoo nkauj thiab lub neej ua haujlwm ntawm cov txhuas txheej.
Kev ua kom zoo tshaj plaws tom qab kho tsis yog tsuas yog txhim kho kev tiv thaiv xeb ntawm txhuas anodized xwb tab sis kuj txhawb nqa kev ua kom anodized txhuas ntev rau cov ntawv thov uas nyuaj. Kev tshuaj xyuas da dej tas li thiab kev tswj cov txheej txheem tsav cov txiaj ntsig zoo sib xws thoob plaws cov pawg ntau lawm.
Los ntawm kev ua raws li cov kev coj ua zoo tshaj plaws ntawm txhua kauj ruam—kev ntxuav thiab kev txiav, kev tswj cov txheej txheem sulfuric acid anodize kom raug, thiab kev kaw tom qab kho mob kom zoo—cov chaw tsim khoom tuaj yeem tsim cov profile txhuas nrog qhov zoo tshaj plaws ntawm qhov chaw, qhov nyuaj ntawm zaj duab xis zoo tshaj plaws, thiab kev tiv taus xeb zoo heev.
Cov Lus Nug Feem Ntau
Qhov concentration ntawm H2SO4 zoo tshaj plaws hauv lub dab da dej sulfuric acid anodizing yog dab tsi?
Qhov concentration ntawm sulfuric acid zoo tshaj plaws rau cov txheej txheem anodizing sulfuric acid feem ntau yog ntawm 150 thiab 220 g / L, uas sib npaug rau 15-20% los ntawm ntim. Tus nqi zoo tshaj plaws yog 180 g / L lossis 18% los ntawm ntim. Qhov ntau no yog qhov tseem ceeb hauv kev tsim cov yeeb yaj kiab anodic oxide nrog qhov nyuaj thiab tiv taus corrosion zoo dua. Kev khiav dej hauv lub qhov rais no txhawb nqa cov txheej oxide sib xws thoob plaws cov profiles txhuas, txhawb nqa cov xim zas, thiab txo qis kev pheej hmoo ntawm cov hmoov lossis cov txheej txheem tsis yooj yim. Cov concentration hauv qab 150 g / L qeeb qeeb kev loj hlob ntawm oxide thiab tej zaum yuav tsim cov yeeb yaj kiab mos, porous, thaum cov concentration saum toj no 220 g / L nce kev yaj thiab tuaj yeem ua rau cov txheej txheem nyias dhau. Rau cov txheej txheem tshwj xeeb, xws li anodizing nyuaj, cov concentration siab dua me ntsis (txog li 240 g / L) thiab qhov kub qis dua yuav siv tau tab sis tsis zoo tagnrho rau kev tsim khoom txheem.
Qhov concentration ntawm anodizing da dej cuam tshuam li cas rau qhov tuab ntawm cov yeeb yaj kiab aluminium oxide?
Qhov concentration ntawm cov anodizing da dej muaj qhov cuam tshuam ncaj qha rau qhov tuab ntawm cov zaj duab xis aluminium oxide. Qhov concentration ntawm cov sulfuric acid ntau dua ua rau cov oxide yaj, ua rau cov txheej nyias dua thiab yooj yim tawg. Ntawm qhov tod tes, cov kua qaub qis dua ua rau cov zaj duab xis tuab dua tab sis feem ntau ua rau cov porosity nce ntxiv, txo qhov nyuaj thiab kev tiv thaiv xeb. Nrhiav qhov concentration kom raug yog qhov tseem ceeb: 180 g/L txhim khu kev qha tsim cov txheej oxide ntom ntom, ruaj khov nrog cov porosity tswj tau uas haum rau kev siv hauv tsev thiab kev lag luam. Kev hloov pauv ntawm qhov concentration no yuav hloov cov zaj duab xis cov khoom tiv thaiv thiab cov khoom siv kho tshuab. Piv txwv li, kev khiav ntawm 220 g/L feem ntau ua rau cov pores me me tab sis muaj kev pheej hmoo ntawm kev poob zaj duab xis sai dua thaum lub sijhawm anodizing.
Lub ntsuas sulfuric acid concentration yog dab tsi thiab vim li cas nws thiaj tseem ceeb?
Lub ntsuas sulfuric acid concentration ntsuas H2SO4 theem hauv cov da dej anodizing tas li. Nws yog qhov tseem ceeb rau kev tswj cov tshuaj lom neeg hauv da dej, tseem ceeb rau kev kho qhov chaw ntawm txhuas. Nrog lub ntsuas concentration, cov neeg teb xov tooj tuaj yeem hloov kho cov koob tshuaj sulfuric acid hauv lub sijhawm tiag tiag, tiv thaiv kev ua yuam kev ntawm tes thiab ua kom muaj kev ruaj khov ntawm cov khoom tsim tawm. Qhov no tswj cov kev teeb tsa da dej kom zoo thiab txhawb nqa kev tsim cov yeeb yaj kiab oxide zoo tshaj plaws. Cov khoom siv xws li Lonnmeter muab kev saib xyuas tsis siv neeg, txhim khu kev qha uas tsim rau cov txheej txheem sulfuric acid anodize, txo qhov zaus ntawm kev kuaj thiab kev tshuaj xyuas tes.
Vim li cas qhov kev ntsuas h2so4 concentration tiag tiag thiaj li tseem ceeb hauv cov txheej txheem anodizing?
Kev ntsuas h2so4 concentration tiag tiag yog qhov tseem ceeb rau kev tswj cov concentration ntawm cov khoom siv hauv chav dej anodizing. Kev teb tam sim ntawd ua rau kev kho qhov sib txawv sai, ua kom cov tshuaj lom neeg hauv chav dej ruaj khov. Yog tias qhov concentration hloov pauv, cov tuab ntawm cov txheej oxide, qhov nyuaj, thiab kev tiv thaiv corrosion tuaj yeem raug kev txom nyem. Cov txheej txheem ntsuas txhim khu kev qha pab ua kom txhua pawg ua tau raws li cov lus qhia, tswj kev ua tau zoo hauv kev ua anodizing txhuas rau kev tiv thaiv corrosion thiab kev ruaj khov ntawm qhov chaw. Txoj hauv kev no yog qhov tseem ceeb tshwj xeeb hauv kev ua haujlwm ntau lossis kev ua haujlwm tsis siv neeg, qhov twg kev cuam tshuam ntawm tib neeg raug txwv.
Puas yog kev siv dej da dej tsis raug tuaj yeem ua rau muaj qhov tsis zoo ntawm cov txhuas anodized?
Yog lawm, kev khiav cov txheej txheem sulfuric acid anodizing sab nraum lub qhov rais concentration pom zoo tuaj yeem ua rau muaj qhov tsis zoo loj heev. Cov no suav nrog cov zaj duab xis oxide tsis muaj zog, xim tsis sib xws, txo qhov nyuaj, thiab txo qhov tsis kam xeb. Siv lub ntsuas sulfuric acid concentration rau kev ntsuas h2so4 concentration tas mus li txo qhov kev pheej hmoo ntawm qhov tsis zoo. Piv txwv li, cov kua qaub ntau dhau tuaj yeem yaj cov oxide tshiab tsim, ua rau cov txheej tsis sib xws lossis nyias, thaum cov kua qaub tsis txaus tsim cov zaj duab xis porous, yooj yim puas tsuaj. Kev saib xyuas tsis tu ncua yog qhov tseem ceeb rau kev ua kom aluminium anodized oxidation ntev.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-03-2025
