Aluminium yog cov hlau siv dav hauv lub neej txhua hnub thiab kev lag luam tsim vim nws lub teeb hnyav, thiab kev ua siab loj. Txawm li cas los xij, hauv qee qhov xwm txheej tshwj xeeb, tib neeg yuav tsum tau ua txhuas qhov chaw tig xim dub kom tau raws li kev ua kom zoo nkauj, ua haujlwm, lossis kev tiv thaiv kev ua haujlwm. Muaj ntau txoj hauv kev kom ua tiav txhuas kev sib txawv koom nrog cov ntsiab cai sib txawv, cov ntaub ntawv, thiab cov kauj ruam kev ua haujlwm. Kab lus no yuav qhia txog kev qhia ntau yam kev uatooj dawbMus dub, nrog txhua ntu cov qauv tseem ceeb nrog rau cov ntsiab lus muaj feem xyuam txog cov txhuas xim dub.
Tshuaj Lom Kab Mob Rau Txhuas Nrog Aluminium Dub Dub Tus Neeg Sawv Cev
Tshuaj blackening yog ib txoj kev siv ntau tshaj plaws los ua txhuas mus dub. Nws tsuas yog muab tso rau ntawm cov tshuaj lom neeg ntawm txhuas dub tus neeg sawv cev thiab cov yeeb yaj kiab txhuas los ua cov yeeb yaj kiab dub lossis lwm yam dub, yog li ua tiav cov nyhuv blackening.
Hom txhuas blackening tus neeg sawv cev rau tshuaj lom blackening
Muaj ntau hom ntawm txhuas blacking cov neeg sawv cev tsim nyog rau tshuaj blackening ntawm txhuas. Ib hom twg yog Alkaline Blackening tus neeg sawv cev. Hom neeg sawv cev no feem ntau muaj cov alkalis muaj zog xws li sodium hydroxide, nrog rau oxidants li sodium nitrate lossis sodium nitrite. Lub zog alkali tuaj yeem corrode ntawm txhuas mus rau qee yam, thiab oxidant tuaj yeem txhawb kev tsim ntawm ib qho dub oxide zaj duab xis ntawm txhuas nto. Lwm hom yog acidic blackening tus neeg sawv cev, uas feem ntau suav nrog sulfuric acid, raws li hlau sulfate lossis hlau chloride. Cov kua qaub nyob rau hauv tus neeg saib xyuas tuaj yeem ua rau aluminium, thiab cov kav dej sib tw tuaj yeem koom nrog cov tshuaj tiv thaiv los ua cov duab sib txawv. Ib qho ntxiv, tseem muaj qee tus neeg sawv cev nruab nrab sib daj sib deev, uas yog qhov sib txawv ntawm cov khoom thiab tsim nyog rau cov khoom siv txhuas uas tsis tiv taus cov kua qaub muaj zog lossis alkalis. Cov neeg nruab nrab no feem ntau muaj cov neeg sawv cev sib luag thiab cov oxidants, uas tuaj yeem ua cov yeeb yaj kiab dub ntawm cov tshuaj txhuas txhuas ntawm cov tshuaj lom neeg uas muaj cov tshuaj.
Cov kauj ruam hauv kev ua haujlwm ntawm kev sib daj cua dub nrog Aluminium Blackening Tus Neeg Sawv Cev
Cov txheej txheem kev ua haujlwm ntawm cov xim dub siv cov txhuas blackening tus neeg sawv cev kuj yuav tsum tau ua kom covKev nyhuv blackeningthiab kev nyab xeeb kev nyab xeeb. Ua ntej tshaj, cov txhuas sib dhos xav tau huv. Qhov no yog vim tias yuav muaj roj stains, plua plav, lossis oxide zaj duab xis ntawm txhuas dub tus neeg sawv cev, yog li txo cov nyhuv blackening. Cov txheej txheem ntxuav tau tuaj yeem siv cov roj hmab depreat, tom qab ntawd siv cov tshuaj huv si, thiab thaum kawg siv cov yeeb yaj kiab oxide hauv qab, ua raws li los ntawm kev yaug nrog dej huv dua. Thib ob, cov khoom ntxuav cov khoom ntxuav kom huv Qhov kev pom zoo thiab ntsuas kub thiab ntsuas kub thiab ntsuas kub tau tswj hwm raws li hom txhuas dub tus neeg sawv cev thiab cov cai ntawm cov nyhuv blackening. Feem ntau, cov kev sib txuam ntawm kev daws teeb meem yog nruab nrab ntawm 5% thiab 20%, thiab qhov ntsuas kub nyob nruab nrab ntawm 20℃thiab 80 degree. Lub sijhawm siv zog sib txawv raws qhov xwm txheej, feem ntau yog xws li los ntawm ob peb feeb mus rau kaum feeb. Thaum lub sijhawm cov txheej txheem siv tas, nws yog qhov tsim nyog los soj ntsuam cov xim hloov ntawm cov xim txhuas ntawm cov npoo txhuas. Thaum lub npoo hloov mus rau hauv cov xim dub, cov khoom lag luam txhuas raug coj tawm. Qhov thib peb, tom qab noj tawm cov khoom txhuas los ntawm txhuas daj tus neeg sawv cev rau sab nraud, yog li los tiv thaiv tus neeg sawv cev ntawm cov chaw so kom muaj kev cuam tshuam nrog cov npoo txhuas thiab ua rau muaj kev sib daj sib tsoo. Thaum kawg, qhov rinsed txhuas khoom yog qhuav. Kom qhuav tuaj yeem ua los ntawm huab cua cua kom qhuav lossis siv lub cub qhuav. Lub tshuab ziab khaub ncaws kom qhuav yuav tsum tsis txhob dhau los kom tsis txhob ua kom tsis txhob ua cov yeeb yaj kiab dub dub rau saum npoo.
Kev Ceev Fwm Rau Tshuaj Lom Hlau Nrog Txhuas Txhuas Tus Saib Xyuas Dub
Thaum siv cov txhuas blackening tus neeg sawv cev rau tshuaj plus tshuaj lom neeg, muaj ntau yam kev ceev faj. Ua ntej, txhuas dub tus neeg sawv cev feem ntau muaj qee cov kev tiv thaiv kev tiv thaiv, xws li hnab looj tes, kom tiv thaiv cov khaub ncaws, los tiv thaiv cov tawv nqaij los ntawm kev hu rau ntawm daim tawv nqaij thiab qhov muag thiab ua rau muaj kev phom sij. Thib ob, kev npaj thiab siv cov txhuas blackening tus neeg sawv cev yuav tsum tau ua kom tsis txhob muaj kev phom sij hauv lub sijhawm thaum lub sij hawm cov tshuaj tiv thaiv thiab cuam tshuam rau tib neeg kev noj qab haus huv. Qhov thib peb, sib txawv hom txhuas blacking cov neeg sawv cev muaj cov khoom sib txawv thiab tsis tuaj yeem cuam tshuam, tsis li, cov tshuaj tiv thaiv tshuaj tsis muaj tseeb tab sis kuj yuav ua cov tshuaj tiv thaiv kab mob khaub ncaws txaus ntshai. Plaub, tom qab kev kho xim dub, cov khoom lag luam txhuas yuav tsum tau kuaj xyuas. Yog tias cov xim saum npoo tsis ncaj lossis muaj qhov tsis xws luag xws li pob txha, nws yog ib qho tsim nyog los nrhiav qhov laj thawj thiab rov hais dua. Yog tias zaj duab xis dub dhau heev lossis tsis dub txaus, lub sijhawm nqus dej kom raug hloov los yog cov tshuaj lom blackentration Yog tias qhov saum npoo yog corroded ntau dhau, kev pom ntawm kev daws lossis lub sijhawm siv lub sijhawm yuav tsum raug txo kom tsawg.
Electrochemical blackening txheej txheem rau txhuas nrog Aluminium Dub Dub Tus Neeg Sawv Cev
Electrochemical blackening yog lwm txoj kev ua tau zoo los uaTxhuas mus dubCov. Cov qauv no siv hluav taws xob hluav taws xob ntxiv rau cov tshuaj tiv thaiv ntawm txhuas dub, yog li ntawd kev hnav khaub ncaws dub tuaj yeem tsim nyob rau ntawm Aluminium nto piv rau kev siv tshuaj deev.
Lub hauv paus ntsiab lus ntawm electrochemical blackening nrog txhuas blooj dub tus neeg sawv cev
Lub hauv paus ntsiab lus ntawm electrochemical blackening tsuas yog tso siab rau cov txheej txheem electrolysis. Thaum cov khoom txhuas yog siv los ua anode thiab muab tso rau hauv electrolyte tus neeg sawv cev, thiab ib qho hluav taws xob dub muag, thiab cov khoom siv hluav taws xob tam sim no yuav poob cov hluav taws xob thiab oxidized. Nyob rau tib lub sijhawm, cov ions hauv Aluminium Blackening tus neeg sawv cev yuav txav mus rau Anode nyob rau hauv qhov kev txiav txim ntawm hluav taws xob teb thiab koom nrog oxidation tshuaj nrog txhuas. Thaum lub sijhawm cov txheej txheem no, cov yeeb yaj kiab oxide dub (feem ntau aluminium oxide) lossis lwm cov kab sib txuas dub yog tsim ntawm txhuas nto. Lub hluav taws xob tam sim no tuaj yeem tswj qhov nrawm thiab qib ntawm cov tshuaj tiv thaiv, ua rau cov zaj duab xis dub ntau dua thiab ntom. Aluminium dub tus neeg sawv cev hauv electrolyte tsis tsuas yog muab cov tshuaj tiv thaiv tsim nyog tab sis kuj tseem yuav txhim kho kom zoo ntawm zaj duab xis dub. Piv txwv li, qee cov neeg ua kom dub dub muaj cov khoom sib ntxiv uas tuaj yeem kho cov pycle ntawm passivating dhau los, thiab ua kom cov tshuaj tiv thaiv ntxov dhau los, thiab ua kom cov tshuaj tiv thaiv kom zoo nkauj ntawm cov xim dub.
Xaiv Cov Txhuam Txhuas Blackening Tus Neeg Sawv Cev Rau Electrochemical blackening
Kev xaiv ntawm txhuas dub tus neeg sawv cev yog qhov tseem ceeb rau cov nyhuv electrochemical. Tus neeg sawv cev blooj zoo tagnrho yuav tsum muaj kev sib deev zoo, thiab tsis muaj cov tshuaj tiv thaiv hluav taws xob, thiab tsis tsim cov tshuaj tiv thaiv hluav taws xob thaum lub sij hawm electrolysis. Aluminium blooding cov neeg sawv cev siv hauv electrochemical blackening suav nrog sodium chromate, poov tshuaj Dichromate, thiab sodium molybdate. Cov kab mob no tuaj yeem tsim cov electrolytes ruaj khov nrog lwm cov (xws li sulfuric acid, phosphoric acid, thiab lwm yam). Piv txwv li, thaum sodium Chromate yog siv ua cov Aluminium dub tus neeg sawv cev, nws tuaj yeem sib xyaw nrog sulfuric acid los ua cov electrolyte. Thaum lub sij hawm cov txheej txheem hluav taws xob hauv hluav taws xob, cov phwj hluav taws xob ions thiab txhuas ions rici-}}} Aluminium nto rau saum npoo. Ib qho ntxiv, qee cov organic sib txuas kuj tseem tuaj yeem siv los ua cov khoom siv dub dub los txhim kho cov nplaum thiab hnav tsis kam ntawm cov yeeb yaj kiab dub. Thaum xaiv cov txhuas xim dub, nws tseem tsim nyog los xav txog hom txhuas alloy thiab cov kev xav tau ntawm cov nyhuv blackening. Piv txwv li, rau siab - purity}} Lub cev tus neeg sawv cev blackening tsis tuaj yeem xaiv; thaum lub sij hawm rau txhuas alloys muaj ntau cov ntsiab lus, ib qho kev nquag ua haujlwmtus sawv cevTej zaum yuav tsum tau ua kom ntseeg tau tias zaj duab xis dub tuaj yeem npog tag nrho cov tib leeg.
Cov txheej txheem ua haujlwm ntawm electrochemical blackening nrog txhuas blooj dub tus neeg sawv cev
Cov txheej txheem ua haujlwm ntawm electrochemical blackening siv cov txhuas blackening tus neeg sawv cev tsuas yog suav nrog cov kauj ruam hauv qab no. Ua ntej, lub aluminium nto yog pretreated. Zoo ib yam li tshuaj plus tshuaj lom neeg, pretricatment suav nrog degreasing thiab derusting. Degreasing tuaj yeem siv cov kuab tshuaj organic (xws li acetone) lossis alkaline depuab cov neeg sawv cev kom tshem tawm cov roj stains rau saum npoo; Derusting yog feem ntau yog kom tshem tawm cov yeeb yaj kiab oxide thiab xeb npo rau saum npoo, uas tuaj yeem ua los ntawm kev xaiv nrog cov kua qaub hydrochloric acid los yog sulfuric acid. Tom qab pretreatiction, cov khoom lag luam txhuas yog muab yaug nrog dej huv kom ntseeg tau tias tsis muaj kev cuam tshuam dab tsi rau saum npoo. Thib ob, lub cell electrolytic tau teeb tsa. Lub cell electrolytic feem ntau yog ua los ntawm cov kua qaub {{}} tiv taus thiab alkali {} {cov ntaub ntawv resistant (xws li yas lossis khob). Cov electrolyte yog npaj los ntawm kev ntxiv cov neeg saib xyuas dub xim dub thiab lwm cov khoom siv uas tsim nyog (salts, thiab lwm yam) ua feem. Qhov kev pom zoo ntawm txhuas dub tus neeg sawv cev hauv electrolyte feem ntau yog muaj kev hloov kho raws li tus neeg sawv cev, thiab 5 rau cov kua qaub electrolytes thiab nruab nrab ntawm 8 thiab 12 rau alkaline electrolytes. Third, the aluminum product is connected to the positive electrode of the power supply (as the anode), and an inert electrode (such as graphite or stainless steel) is used as the cathode and connected to the negative electrode of the power supply. Tom qab ntawd, ob electrodes yog raus hauv electrolyte, thiab lub zog siv tau yog muab. Qhov ceev ceev thiab cov hluav taws xob hluav taws xob yog qhov tsis tseem ceeb cuam tshuam rau cov nyhuv blackening. Qhov ceev ceev tam sim no feem ntau yog tswj nruab nrab ntawm 1a / dm² thiab 10a / dm², thiab lub sijhawm electrolysis nyob nruab nrab ntawm 10 feeb thiab 60 feeb. Thaum lub sij hawm cov txheej txheem hluav taws xob, nws yog ib qho tsim nyog yuav tsum tau do cov khoom siv hluav taws xob kom ntseeg tau qhov kev daws teeb meem thiab kub. Thib plaub, tom qab cov khoom lag luam electrolysis ua tiav, cov khoom lag luam txhuas tau tawm ntawm cov hluav taws xob hluav taws xob thiab cov pa roj hluav taws xob ntau dua los tshem tawm cov hluav taws xob hluav taws xob ntau dua los tshem tawm cov hluav taws xob hluav taws xob ntau dua rau saum npoo. Tom qab ntawd, cov khoom lag luam txhuas yog qhuav. Kev ziab khaub ncaws kom qhuav tuaj yeem ua tau ntawm chav sov lossis hauv lub qhov cub kom qhuav ntawm qhov kub tsawg (hauv qab 100 degree) kom tsis txhob muaj cov yeeb yaj kiab dub los ntawm kev tawg lossis poob vim qhov kub. Thaum kawg, blackened aluminium nto muaj peev xwm yog coated nrog ib txheej ntawm tus neeg tiv thaiv tiv thaiv (xws li tsim nyog txhim kho kev tiv thaiv corrosion thiab kev pabcuam lub neej ntawm zaj duab xis dub.
Lub cev Dub Dub txoj kev rau txhuas nrog Aluminium Dub Dub Tus Neeg Sawv Cev
Lub cev dub yog ib txoj kev uas tsis cia siab rau cov tshuaj lom neeg Cov qauv no yog qhov yooj yim thiab tsis muaj kev cuam tshuam tsawg dua ntawm kev ua yeeb yam ntawm cov khoom siv txhuas substrate, ua rau nws cov khoom txhuas uas rhiab rau cov tshuaj lom neeg.
Hom Txhuas Txhuas Blackening Tus Neeg Sawv Cev Rau Lub Cev Dub
Aluminium blackening cov neeg sawv cev siv hauv lub cev dub yog feem ntau nyob rau hauv daim ntawv ntawm cov txheej txheem lossis pigments. Ib hom twg yog cov tshuaj tsuag xim dub tshwj xeeb tsim rau txhuas. Cov tshuaj txau hom muaj xim dub (xws li carbon dub, hlau oxide dub, thiab lwm yam) thiab cov nplaum. Cov nplaum muaj peev xwm tuaj yeem ua kom pom tseeb tias cov pigments yog khov kho txuas rau saum npoo av, thiab cov xim pleev xim muaj adinesion thiab corrosion tsis kam tom qab ziab. Lwm hom yog dub ncu haum rau txhuas. Cov number case no feem ntau yog siv rau cov qauv luam ntawv lossis cov cim ntawm cov npoo txhuas, tab sis nws kuj tseem siv tau rau cov xim dub. Cov kua txob dub muaj cov xim dub los yog cov pigments thiab tuaj yeem qhuav nrawm nrawm ntawm chav tsev kub lossis qis dua los ua zaj duab xis dub. Ib qho ntxiv, muaj cov xim dub los yog hmoov. Cov nqaij qaib dub yog sib xyaw ntawm cov xim dub thiab roj lossis aqueous binders, uas tuaj yeem siv rau cov txhuam hniav txhuas nrog txhuam lossis cov menyuam; Cov hmoov dub dub yuav tsum tau sib xyaw nrog cov kuab tshuaj ua ntej siv, thiab tom qab ntawd ua ntawv thov rau lub ntsej muag txhuas, thiab tom qab ntawd qhuav los ua ib txheej dub. Cov xim dub no rau lub cev dub muaj cov yam ntxwv ntawm kev siv yooj yim thiab cov xim tob. Los ntawm kev tswj cov tuab ntawm cov txheej, cov dub ntawm txhuas nto tuaj yeem hloov kho.
Daim ntawv thov txoj kev ntawm lub cev xim dub nrog Aluminium Dub tus neeg sawv cev
Daim ntawv thov cov txheej txheem ntawm lub cev nqaij daim tawv siv cov txhuas blackening tus neeg sawv cev muaj ntau hom, thiab cov qauv tsim nyog tuaj yeem xaiv raws li cov duab txhuas thiab cov kev xav tau ntawm cov nyhuv blackening. Thawj txoj kev muaj tshuaj txau. Txau yog haum rau cov khoom txhuas nrog cov duab sib xyaw thiab cov chaw loj. Thaum siv cov xim txau dub ua cov xim dub ua ntej, ua ntej, phom txau txuas nrog cov cua compressor, thiab cov xim tshuaj pleev xim yog tusyees. Tom qab ntawd, cov khoom lag luam txhuas muab tso rau hauv qhov chaw zoo- pa hluav taws xob, thiab rab phom txau muaj nyob ntawm qhov deb ntawm 20}}}}}}}}}}}}}}}}}} 2 cm los ntawm aluminium nto. Cov tshuaj tsuag yog nqa tawm hauv cov khaub ncaws hnav thiab qeeb, thiab cov tuab ntawm cov xim zaj duab xis yog tswj hwm los ntawm kev kho cov tshuaj tsuag ceev thiab tus naj npawb ntawm cov tshuaj txau. Feem ntau, 2 {{236}} 3 yuav tsum tau ua tiav cov khaub ncaws hnav thiab ntom zaj duab xis dub. Tom qab tshuaj tsuag txhua qhov tsim nyog, nws yog ib qho tsim nyog yuav tau tos rau cov xim yeeb yaj kiab kom qhuav me ntsis (feem ntau yog 10-20 feeb kom zam dhau cov yeeb yaj duab tom qab los yog sagging. Qhov thib ob txoj kev yog txhuam hniav. Kev txhuam hniav yog tsim nyog rau cov khoom lag luam me me lossis cov xim sib daj sib deev. Thaum siv cov xim dub los yog tus cwj mem dub ua tus thawj coj dub, txhuam nrog cov mos mos yog siv los ua kom tus neeg sawv cev tsim nyog thiab thov nws tusyees ntawm txhuas nto. Thaum lub sij hawm txhuam txhuam hniav, nws yog qhov tsim nyog yuav tsum tau tawm ntawm kev txhuam txhuam, thiab cov tuab ntawm cov txheej yuav tsum tau ua kom zoo sib xws. Rau cov cheeb tsam uas muaj cov ces kaum lossis cov txhuam hniav, txhuam tuaj yeem siv los ua tib zoo sau tus neeg sawv cev kom ntseeg tau tias tag nrho cov npoo npog. Qhov thib peb txoj kev yog dov. Dov yog haum rau tiaj tus nyias nyias daim hlau los yog ib daim hlab. Cov menyuam yog siv los ntsw txhuas dub tus neeg sawv cev (xws li cov nqaij qaib dub), thiab tom qab ntawd cov menyuam yaus tau dov ntawm cov txheej txheem sib dhos. Hom no muaj kev ua haujlwm siab thiab haum rau huab hwm coj ntau lawm. Tom qab daim ntawv thov ntawm Aluminium dub tus neeg sawv cev ua tiav, cov khoom lag luam txhuas yuav tsum tau qhuav lossis kho tau. Rau cov kais dej-cov tshuaj tiv thaiv dej, cua kom qhuav tuaj yeem siv tau; Rau cov roj-roofed cov neeg sawv cev lossis qee cov inks tshwj xeeb, nws yuav tsim nyog los siv lub tshuab ziab kom qhuav rau kev kho. Lub ziab kub yog feem ntau ntawm 50℃thiab 80 degree, thiab lub sijhawm qhuav yog 30-60 feeb, nyob ntawm seb tus txhuas dub tus neeg sawv cev.
Qhov zoo thiab cov kev txwv ntawm lub cev xim dub nrog Aluminium Blackening Tus Neeg Sawv Cev
Kev ua xim dub siv cov txhuas blackening tus neeg sawv cev muaj ntau yam zoo. Ua ntej, kev ua haujlwm yog yooj yim thiab tsis tas yuav cov cuab yeej nyuaj thiab cov kws ua haujlwm tshaj lij. Cov neeg dog dig tuaj yeem ua tiav kev kho cov khoom dub ntawm cov khoom siv txhuas los ntawm kev qhia cov khoom lag luam. Thib ob, qhov cuam tshuam ntawm txhuas substrate yog me me. Tsis zoo li cov tshuaj lom neeg lossis hluav taws xob me me tsis ua rau corrosion mus rau qhov chaw txhuas, yog li nws tuaj yeem tswj hwm tus thawj cov khoom lag luam ntawm cov khoom lag luam txhuas. Thib peb, cov xim yooj yim los kho. Los ntawm kev hloov hom ntawm txhuas dub tus neeg sawv cev lossis cov tuab ntawm txheej, qhov sib txawv ntawm cov xim dub tuaj yeem ua kom tau raws li kev ua kom zoo sib txawv. Plaub, tus nqi yog tsawg. Tus nqi ntawm lub cev txhuas blackening cov neeg sawv cev (xws li txau pleev xim, thiab cov cuab yeej pheej yig, uas yog tsim nyog rau me me- batch ntau lawm lossis siv tus kheej. Txawm li cas los xij, kev sib daj sib deev lub cev kuj muaj qee qhov kev txwv. Qhov kev txwv uas pom tseeb tshaj plaws yog tias cov nplaum ntawm cov yeeb yaj kiab dub yog cov tsis zoo piv rau cov tshuaj lom neeg lossis hluav taws xob sib daj. Zaj duab dub dub tsim los ntawm kev siv lub cev yog ib qho yooj yim rau kev txiav txim sab nraud (xws li nws tsis haum rau cov khoom lag luam uas feem ntau raug rau kev hnav kho tshuab. Tsis tas li ntawd, cov corrosion resistance ntawm lub cev zaj duab xis dub yog qhov tsis muaj zog. Yog hais tias cov khoom txhuas yog siv nyob rau hauv ib puag ncig huab cua lossis kev ua yeeb yaj kiab dub, yuav puas tsuaj los ntawm cov tshuaj tua av lossis cov tshuaj xeb, ua rau qhov poob ntawm cov nyhuv blackening. Yog li ntawd, blackening lub cev yog qhov tsim nyog rau cov khoom siv txhuas siv hauv qhuav thiab tsis- kev coj ib puag ncig, cov cim, thiab lwm yam.
Txij nkawm ntawm dub aluminium tej yam cuam tshuam rau txhuas blackening tus neeg sawv cev
Tom qab ua tiav txhuas nto sib siv ntau ntau txoj hauv kev nrog txhuas dub tus neeg sawv cev, tsim nyog txij nkawm yog qhov tseem ceeb thiab txuas ntxiv kev pabcuam lub neej ntawm zaj duab xis dub. Cov kev saib xyuas txij nkawm kuj cuam tshuam nrog hom txhuas dub tus neeg sawv cev thiab cov txheej txheem blacking siv.
Niaj Hnub Tu ntawm Blackened Aluminium Chaw
Niaj hnub ntxuav yog qhov kev saib xyuas yooj yim rau dub txhuas aluminium. Rau aluminium hiav txwv blackened los ntawm cov tshuaj lom neeg lossis cov yeeb yaj kiab dub yog qhov tsim nyog ua yeeb yaj kiab, tab sis nws yog tseem tsim nyog kom zam siv cov neeg sawv cev huv. Thaum tu, huv dej los yog ib qho chaw ntxhua khaub ncaws nruab nrab (xws li dej xab npum) tuaj yeem siv. Ib daim ntaub mos muag lossis daim txhuam cev yog tsau rau hauv cov tshuaj tu thiab maj mam muab so kom tawg thiab av. Tom qab tu, nws yog qhov tsim nyog los yaug nrog dej huv tam sim ntawd kom tshem tawm cov khoom seem, thiab tom qab ntawd qhuav cov ntaub ntawv qhuav los tiv thaiv cov dej stains los ntawm seem ntawm qhov chaw. Rau Aluminium Thaj Chaw Dub Blackened los ntawm cov txheej txheem lub cev (xws li cov duab tshuaj tsuag, yog li nws yog qhov tsim nyog kom tsis txhob siv cov khoom tawv tawv kom tiv thaiv cov txheej los tiv thaiv. Ib yam li ntawd, kev tu nruab nrab tu yuav tsum siv, thiab kev quab yuam ntau dhau yuav tsum tsis txhob siv thaum so. Tsis tas li ntawd, rau cov chaw dub dub, nws tsis yog kev xav kom muab lawv ua kom ntev, vim qhov no yuav ua rau cov hlwv los yog poob.
Kev tiv thaiv tawm tsam sab nraud yam rau dub muag aluminium nto
Dub Aluminium cov chaw yuav tsum tau tiv thaiv tawm tsam ntau yam lwm yam kev puas tsuaj rau zaj duab xis dub. Ua ntej, zam kev kis lub hnub ci muaj zog rau lub sijhawm ntev. Ultraviolet Rays nyob rau hauv lub hnub ci tuaj yeem ua rau kev laus thiab discoloration ntawm zaj duab xis dub, tshwj xeeb yog cov xim dub (xws li cov xim pleev xim dub (xws li cov xim pleev xim dub). Rau cov khoom siv txhuas cov khoom siv sab nraum zoov, ib txheej ntawm anti- ultraviolet tiv thaiv tawm ntawm cov npoo dub yog tias tsim nyog los txo cov kev puas tsuaj ntawm ultraviolet rays. Thib ob, tiv thaiv kev sib cuag nrog cov tshuaj muaj xeb. Corrosive cov tshuaj xws li acids, alkalis, thiab ntsev tuaj yeem hnov cov yeeb yaj kiab dub, ua rau qhov poob ntawm cov nyhuv blackening. Piv txwv li, yog hais tias cov xim dub muag yog siv hauv chav ua noj lossis chav ua noj, nws yog ib qho tsim nyog kom tsis txhob muaj kev sib cuag nrog vinegar, thiab lwm yam tshuaj. Yog tias nws tsis ua yuam kev, nws yuav tsum tau ntxuav nrog dej huv tam sim ntawd. Thib peb, zam kev hnav neeg kho tshuab. Rau cov tshuaj thiab encallochemical cov yeeb yaj kiab dub, txawm hais tias lawv muaj qee qhov kev coj ua tsis kam, ntev}}}}} binner thiab dub zuj zus; Rau cov yeeb yaj kiab dub dub, hnav yog yuav ua rau kev puas tsuaj. Yog li ntawd, thaum siv cov khoom siv blackened aluminium, zam kev sib txhuam nrog cov khoom nyuaj. Piv txwv li, thaumtsoDUBHED ALUMINA daim phiaj, cov ntaub qhwv muag muag tuaj yeem muab tso rau ntawm lawv kom tiv thaiv kev sib txhuam.
Kev kho ntawm puas dub daj Aluminium
Txawm hais tias nrog kev saib xyuas tsim nyog, Aluminium zaj duab xis dub yuav raug puas los ntawm khawb, cov chaw hnyav, lossis siv tsis raug. Kev kho vaj tse nyob ntawm tusAluminium blackening tus neeg sawv cev hom thiab blackening txoj kevTxhawm rau kom muaj xim thiab ua tau zoo sib xws.
Kho Rau Kev Dag Xaj Dub Aluminium Aluminium
Zaj duab dub dub ntawm no yog ib substrate -}} eg, aluminium oxide composite zaj duab xis). Rau me ntsis kev puas tsuaj (khawb me me, discoloration):
Maj mam txhuam qhov chaw puas nrog 400-800 MACE nplua cov xuab zeb kom tshem cov zaj duab xis xoob thiab du saum npoo (zam kom txhob ua kom puas tsuaj rau txhuas substrate).
Huv si nrog nruab nrab xab npum, yaug nrog dej, thiab qhuav.
Thov ib qho nyiaj me me ntawm daim tseemAluminium Blackening Tus Neeg Sawv Cev(tib yam / concentration raws li kev pib siv) rau thaj chaw nrog txhuam.
So tus neeg sawv cev so ib zaug thaum cov xim sib tw puag ncig, yaug, thiab qhuav; Rov ua dua yog tias xav tau.
Rau kev puas tsuaj loj (loj- cheeb tsam tev nrog dilute sulfuric acid, yaug, thiab re-}}
Kho rau Electrochemically Blackened Aluminium Chaw
Qhov no ntom, khov kho cov yeeb yaj kiab yuav tsum tau kho kom haum. Rau me ntsis kev puas tsuaj (khawb qis):
Polish the area in circular motions with 800-1200 mesh ultra-fine sandpaper.
Ntxuav nrog dej deionized thiab qhuav (siv phom nitrogen lossis daim ntaub).
Npaj electrolyte nrog tus thawjAluminium Blackening Tus Neeg Sawv Cev(xws li, sodium chromate -} sulfuric acid mix). Siv portable electrolytic cwj mem (aluminium li anode, alramite ua catode, ntawm thawj zaug ceev (1-5 feeb) rau 2-5 feeb) rau 2-5 feeb) rau 2-5 feeb kom txog thaum xim sib tw.
Yaug nrog dej deionized, qhuav, thiab siv tus thawj coj tiv thaiv qub.
Rau kev puas tsuaj loj (loj- cheeb tsam tev nrog chromic acid (10 feeb}}}}
Kho Rau Lub Cev Dub Dub Aluminium
Cov txheej saum npoo (tshuaj tsuag xim, number case) yog qhov yooj yim kho. Rau me ntsis kev puas tsuaj (khawb me me, peeting hauv zos):
Ntxuav thaj chaw nrog dej cawv; Scrape tiaj tus tsa sawv (zam kev puas tsuaj rau kev puas tsuaj).
Thov cov thawjAluminium Blackening Tus Neeg Sawv Cev(txau xim / muab tshuaj txhuam) nrog txhuam -}} tswj tus nqi kom tsis txhob muaj kev tsis sib xws.
Cua - qhuav 10-20 feeb (ib cov lus qhia); Ntxiv ib txheej thib ob yog xim yog lub teeb.
Polish nrog 1000-1500 mesh qhaub ib zaug qhuav, tom qab ntawd so huv.
Rau kev puas tsuaj loj (loj- cheeb tsam tev, huv si, qhuav, thiab re {1} Siv tus neeg sawv cev rau ib kauj ruam thawj zaug.
Cov Lus Qhia Xaiv Tswv Yim
Tshuaj, electrochemical, thiab txoj kev lub cev muaj ntau yam rau txhuas xim dub, nrogAluminium Blackening Tus Neeg Sawv Cev XaivQhov tseem ceeb rau cov nyhuv, nqi, thiab txij nkawm.
Electrochemical blankening: Zoo tagnrho rau kev lag luam muaj xwm txheej (cov tshuab siv kho tshuab, sab nraum zoov profiles) yuav tsum tau hnav zoo / corrosion tsis kam. Siv cov neeg sawv cev zoo li sodium chromate tab sis yuav muaj cov cuab yeej tshaj lij thiab tus nqi siab dua.
Kev Siv Tshuaj Lom Zem: Tsim nyog rau me me - batch / cov khoom lag luam / cov haujlwm xuas tes ua (cov haujlwm yooj yim, tus nqi qis). Cov neeg sawv cev (alkaline / acidic / nruab nrab) yog ib qho yooj yim rau qhov chaw, tab sis zaj duab xis yog thanner thiab tsawg {resistant.
Dub Dub: Zoo tshaj plaws rau cov hniav zoo nkauj / cov paib (ua kom pom tseeb, tsis muaj kev puas tsuaj substrate). Cov neeg sawv cev (tshuaj pleev xim / number case / muab tshuaj txhuam) yog tus neeg siv khoom- Tus phooj ywg, tab sis cov yeeb yaj kiab muaj siab tsis zoo adhesion (tsis yog rau siab- kev thaj chaw).
Tshaj tawm - xab tshuaj ntxuav, zam kev corrosive cov tshuaj, kev kho kom raws sijhawm) ncua sijhawm lub neej. Xaiv cov hau kev / cov neeg sawv cev raws li siv cov xwm txheej, kev ua tau zoo xav tau, peev nyiaj, thiab kev nyuaj.