HlauTshuaj phosphate kev kho, tseem hu ua phosphatating, yog cov txheej txheem tseem ceeb heev uas tau siv dav hauv ntau yam lag luam rau xyoo lawm. Tus txheej txheem no cuam tshuam kev tsim cov phosphate hloov pauv hloov ntawm cov npoo ntawm cov hlau vov los ntawm cov tshuaj tiv thaiv. Lub resating txheej tsis tsuas yog muab corrosion tsis kam tab sis kuj ua haujlwm ua cov txheej txheem zoo rau cov txheej txheem tom ntej, xws li cov xim av thiab cov nplaum.
Keeb kwm ntawm phosphate kev kho mob tuaj yeem raug rov qab mus rau thaum ntxov xyoo pua 20th. Xyoo 1907, tus thawj patent rau cov phosphatating tau tso cai rau tus neeg German lub npe Albert Monica. Thaum pib, cov txheej txheem feem ntau siv nyob rau hauv kev lag luam hauv tsheb los txhim kho cov khoom siv corrosion. Tau ntau xyoo, nrog kev kho mob thev naus laus zis, Phosphathate kev kho tau hloov zuj zus thiab pom cov khoom lag luam ntau yam, suav nrog aerospace, khoom siv hluav taws xob.
Lub hauv paus ntsiab lus tom qab kev kho mob phosphate yog ua raws li cov tshuaj lom neeg ntawm cov hlau nto thiab phosphate-muaj kev daws teeb meem. Thaum cov hlau tso rau hauv cov dej da dej phosphats, cov tshuaj tiv thaiv kab mob tshwm sim, ua rau kev tsim cov yeeb yaj kiab phosphoate rau saum npoo. Cov muaj pes tsawg leeg thiab cov qauv ntawm zaj duab xis nyob ntawm ntau yam, xws li hom hlau, cov lus sib xyaw ntawm phosphadating tov, thiab covkev uatsis muaj.
Piv txwv li, tus txheej txheem hlau thiab hlau, phosphats txheej txheem feem ntau yog cov kauj ruam hauv qab no: Ua ntej, cov hlau nto yog ntxuav kom tshem tawm cov av, roj, lossis xeb. Tom qab ntawd, nws yog immersed nyob rau hauv ib phosphating daws uas muaj phosphoric acid thiab hlau phosphates, xws li zinc lossis cov phosphes. Cov acid reacts nrog cov hlau saum npoo, ua rau muaj kev sib cais ntawm cov hlau me me thiab kev tsim ntawm hydrogen roj. Qhov no ua rau muaj kev nce hauv zos hauv PH, uas txhawb nqa cov nag lossis daus ntawm cov hlau phosphates ntawm saum npoo, sib sau cov yeeb yaj kiab tiv thaiv.
Cov txheej txheem phosphate yog cuam tshuam los ntawm ntau yam, uas yuav tsum tau ua tib zoo tswj kom muaj qhov zoo thiab ua tau zoo ntawm txheej. Ib qho ntawm qhov tseem ceeb tshaj plaws yog qhov kub ntawm phosphating tov. Ntau hom phosphating cov txheej txheem xav tau ntau qhov kub thiab txias. Piv txwv li, cov iav txias yog nqa tawm ntawm chav sov, thaum kub phosphatating yuav tsum tau daws kom muaj qhov kub thiab txias dua li 60 thiab 90 degrees Celsius. Cov kev kub siab dua tuaj yeem nrawm tus nqi tshuaj tiv thaiv, ua rau muaj lub zog tuab thiab ua rau muaj zog ntau dua thiab tuaj yeem ua rau muaj kev daws teeb meem ntxiv.
Lwm qhov tseem ceeb ntawm qhov tseem ceeb yog kev pom zoo ntawm phosphating tov. Cov concentration ntawm phosphoric acid thiab hlau phosphates nyob rau hauv kev daws cuam tshuam rau tus nqi ntawm zaj duab xis tsim thiab cov khoom ntawm txheej. Yog hais tias lub siab yog tsawg dhau, zaj duab xis yuav yog nyias thiab tsis sib luag, thaum lub siab dhau kev xav tau tuaj yeem ua rau muaj dej nag ntau dhau.
Tus lej ntawm cov kev daws teeb meem tseem yog qhov tseem ceeb. Tus nqi PHEEJ RAU LUB SOLUBILDANATION NTAWM COV HLAU PHAJ NTUJ THIAB tus nqi ntawm cov tshuaj tiv thaiv. Feem ntau, cov phosphating kev daws teeb meem yog tswj xyuas ntawm ib qho kua qaub me ntsis, feem ntau nyob nruab nrab ntawm 2 thiab 7, nyob ntawm seb cov txheej txheem tshwj xeeb.
Ib qho ntxiv, lub sijhawm kho, hom thiab mob ntawm cov hlau saum npoo, thiab muaj cov tshuaj ntxiv hauv cov tshuaj sib piv tau txhua yam ntawm kev kho mob phosphote. Piv txwv li, qee cov tshuaj ntxiv yuav raug siv los txhim kho lub corrosion tsis kam ntawm cov txheej lossis ua kom nrawm dua cov tshuaj tiv thaiv kab mob.
Cov tshuaj phosphote txheej tsim los ntawm cov txheej txheem no muaj ntau cov ntawv sau tseem ceeb. Ib qho ntawm cov ntawv thov tseem ceeb yog hauv kev tiv thaiv corrosion. Cov yeeb yaj kiab phosphate ua raws li kev thaiv, tiv thaiv kev sib ze ntawm cov hlau thiab ib puag ncig ib puag ncig, xws li ya raws, oxygen, thiab corrosive tshuaj. Qhov no yuav pab tau cov kev pabcuam lub neej ntawm cov hlau sib, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig hnyav.
Hauv kev lag luam hauv tsheb, phosphate kev kho yog dav siv rau lub cev panels, chassis Cheebtsam, thiab cov cav. Cov txheej tsis tsuas yog muab cov corrosion tsis kam tab sis kuj txhim kho cov nplaum ntawm cov xim, ua kom muaj kev lom zem ntev thiab ntxim nyiam.
Lwm daim ntawv thov tseem ceeb yog nyob rau hauv qhov kev npaj rau cov txheej txheem tom ntej. Cov yeeb yaj kiab phosphate muab cov khoom siv ntxhib thiab ntxig saum npoo av, uas nce cov tshuab sib cuam tshuam ntawm cov hlau thiab txheej, xws li pleev xim lossis hmoov xim. Qhov no ua rau muaj adhesion zoo dua thiab ruaj khov ntawm cov txheej txheej txheej.
Hauv kev lag luam hluav taws xob, kev kho mob phosphate yog siv rau kev kho kom thaj tsam kom txhim kho lawv cov khoom siv hluav taws xob tsis kam thiab hluav taws xob.
Piv rau lwm txoj kev kho mob hauv av, xws li cov tshuab hluav taws xob, xws li electrandating thiab anodizing, tshuaj phosphate kev kho tau muaj ob peb qhov zoo. Ib qho ntawm cov ntsiab lus tseem ceeb yog nws cov txiaj ntsig zoo. Cov cuab yeej siv thiab cov khoom siv uas yuav tsum tau rau phosphapating yog cov pheej yig heev, thiab cov txheej txheem yog yooj yim yooj yim thiab yooj yim los siv.
Lwm qhov zoo dua yog nws cov versatility. Phosphate kev kho mob tuaj yeem siv rau ntau yam ntawm cov hlau, suav nrog cov hlau, hlau, txhuas, thiab zinc. Nws kuj tseem siv tau rau ntawm ntau yam duab thiab ntau thiab tsawg ntawm cov khoom siv, ua kom haum rau kev lag luam sib txawv thiab kev siv.
Phosphate kev kho kuj tseem muaj cov kev tiv thaiv corrosion, tshwj xeeb tshaj yog thaum ua ke nrog lwm cov txheej txheej. Cov yeeb yaj kiab ntxig ntawm cov yeeb yaj kiab phosphate tuaj yeem nqus thiab khaws cov corrosion inhibitors, ntxiv txhim kho kev tiv thaiv kev tiv thaiv kev tiv thaiv kev xeb.
Txawm li cas los xij, kev kho mob phosphate kuj muaj qee qhov kev txwv. Piv txwv li, cov txheej txheej txheej txheej Nyob rau hauv cov xwm txheej zoo li no, yuav tsum muaj cov tsho tiv no ntxiv.
Nyob rau hauv xyoo tsis ntev los no, nrog kev nce ntxiv ntawm kev tiv thaiv ib puag ncig, muaj kev siv zog los tsim cov txheej txheem ntawm cov tswv yim zoo ib puag ncig. Piv txwv li, kev siv cov tsis muaj tshuaj lom lossis txo qis toxic thiab txo qis ntawm cov khib nyiab thiab kev siv hluav taws xob yog cov lus qhia tseem ceeb rau kev txhim kho yav tom ntej.
Lwm qhov sib txuas yog kev sib koom ua ke ntawmTshuaj phosphate kev khoNrog lwm txoj kev kho mob saum npoo ua kom tiav kev ua tau zoo dua. Piv txwv li, ua ke phosphating nrog Nanotechnology lossis cov txheej txheem kev hloov kho saum npoo yuav ua rau kev txhim kho ntawm cov txheej txheem tshiab nrog kev txhim kho cov khoom.
Hauv kev xaus, phosphate kev kho ntawm cov hlau yog qhov tseem ceeb saum npoo kev kho mob uas muaj cov txiaj ntsig tseem ceeb saum toj no ntawm corrosion tsis kam thiab txheej nplaum. Nrog rau kev nce qib tsis tu ncua thiab ib puag ncig kev txiav txim siab, yav tom ntej ntawm phosphote kev kho mob zoo li muaj kev cia siab, nrog kev txuas ntxiv ua haujlwm hauv cov txheej txheem ua haujlwm tau zoo thiab txheej txheem ua haujlwm.