Zinc txheej ntawm hlau: thev naus laus zis thiab txoj hauv kev

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Tiv thaiv hlau los ntawm corrosion, ntau txoj kev thiab txoj kev tau tsim. Lawv lub ntsiab lus nyob rau hauv qhov tseeb hais tias ib tug tshwj xeeb tshuaj yog siv rau saum npoo ntawm cov hlau. Thaum kawg, ib zaj duab xis nyias yog tsim. Nws tiv thaiv kev nkag mus ntawm cov dej noo, oxygen, thiab cov khoom hnyav rau saum npoo. Ntawm cov txheej txheem no, hlau galvanizing yog qhov txawv. Nws yog qhov ua tau zoo tshaj plaws.

cov ntaub ntawv dav dav

Raws li tau hais ua ntej, galvanizing ib lub hlau yog txheej txheem ntawm kev siv cov khoom tshwj xeeb rau saum npoo ntawm cov khoom.

Cov kev daws teeb meem no yog ua los ntawm zinc, uas yog cov khoom pib tsim nyog tshaj plaws. Nws tiv thaiv corrosion thiab tseem tiv thaiv qhov chaw los ntawm kev cuam tshuam ntawm cov khoom hnyav. Daim ntawv ua tiav muaj ntau qhov zoo:

• nce lub zog ntawm cov khoom;
• kuj rau ntau qhov kub;
• tsis raug rau cov tshuaj phem;
• nce ntxivkhoom lub neej;
• khoom tsis oxidize.

Technological foundation

Zinc txheej ntawm hlau yog txheej txheem nrov thoob plaws ntiaj teb. Cov txheej txheem no muaj nyob rau hauv qhov tseeb hais tias ib tug tshwj xeeb zinc tov yog siv rau cov hlau nto. Tom qab ntawd, ib zaj duab xis nyias yog tsim, uas ua haujlwm tiv thaiv, uas yog, tiv thaiv corrosion. Corrosion hloov cov qauv ntawm cov hlau thiab ua rau cov khoom siv tsis tau.

Zoo li cas?

Raws li tau hais ua ntej, cov khoom raug cuam tshuam los ntawm cov dej noo, nrog rau cov pa oxygen thiab cov khoom corrosive.

Lawv cov molecules nkag mus rau hauv cov qauv sib sib zog nqus ntawm cov hlau, uas ua rau xeb. Yog li ntawd, qhov tshwm sim ntawm qhov chaw. Cov txheej txheem no tuaj yeem siv sijhawm ntev. Zinc tov yog siv los ua kom cov txheej txheem oxidation qeeb.

Zinc txheej ntawm cov hlau muaj nyob rau hauv npog ntau yam khoom nrog ib tug tiv thaiv zinc zaj duab xis. Txhawm rau ua cov txheej txheem no, koj yuav tsum muaj cov cuab yeej tshwj xeeb. Txhua lub ntsiab ntawm cov cuab yeej yuav tsum tsis txhob raug cov dej noo thiab cov khoom hnyav. Cov txheej txheem galvanizing tau muab faib ua cov kauj ruam hauv qab no:

1. Npaj. Ua ntej tshaj plaws, koj yuav tsum muab cov khoom tso rau hauv kev txiav txim. Nws nto yuav tsum tau ntxuav ntawm ntau yam tshuaj, thiab ces degreased. Tom ntej no yog cov txheej txheem etching. Cov khoom siv hlau yog qis dua rau hauv lub thawv nrog ib puag ncig acidic. Raws li txoj cai, cov tshuaj sulfuric acid yog siv. Los ntawm etching cov hlau rau saum npoooxide zaj duab xis yog tsim. Qhov no txhais tau hais tias cov tshuaj zinc yuav kav ntev dua. Thaum kawg, cov kua qaub seem raug tshem tawm ntawm cov khoom thiab qhuav.
2. txheej txheem Galvanizing. Cov theem no muaj nyob rau hauv qhov tseeb hais tias ib tug tov yog siv rau lub npaj nto. Ua kom nws, nws yog ib qhov tsim nyog los yaj zinc hauv ib da dej tshwj xeeb ntawm qhov kub thiab txias. Thaum cov tshuaj npaj txhij, cov khoom hlau yog muab tso rau hauv da dej thiab khaws cia rau ob peb feeb.
3. Kev ziab cov khoom. Cov khoom galvanized yog qhuav ntawm chav tsev kub.

Cov txheej txheem ntawm cov khoom siv hlau galvanizing tshwm sim hauv chav da dej tshwj xeeb.

Yog tias tsim nyog, lawv tau nruab nrog lub qhov (sockets). Txawm hais tias lawv cov ntim tseem ceeb, lawv kuj ua cov khoom lag luam me me loj. Yog li, cov khoom siv rau galvanizing hlau thiab kho vajtse tuaj yeem tsis yog me me xwb, tab sis kuj loj.

Txoj Kev Ua Haujlwm Tseem Ceeb

Txoj kev nrov tshaj plaws los tiv thaiv cov khoom hlau los ntawm corrosion yog galvanizing. Muaj ntau txoj hauv kev ntawm cov txheej txheem no. Txhua tus ntawm lawv yog siv rau qee yam hlau. Qee hom yuav hnov mob nrog zinc. Muaj plaub hom kev ua: kub, txias, thermal diffusion, galvanic. Cia peb xav txog txhua yam kom ntxaws ntxiv.

Cov khoom lag luam hauv txoj kev no yog nrov hauv ntau lub tebchaws. Nws cov khoom zoo tseem ceeb yog qhov ua tau zoo, nrog rau kev ua haujlwm ntev. Yog vim li castxoj kev no tau dhau los ua ib qho zoo tshaj plaws. Kuj tseem muaj ntau yam tsis zoo. Ua ntej ntawm tag nrho cov, txoj kev tsis yog ib puag ncig tus phooj ywg, vim muaj ntau yam tshuaj siv nyob rau hauv kev npaj thiab galvanizing theem. Tsis tas li ntawd, muaj teeb meem tseem ceeb hauv kev ua haujlwm kub. Nws yog ib qho tsim nyog yuav tsum tswj qhov kub ntawm zinc nyob rau hauv thaj tsam ntawm 500 txog 5000ºС. Yuav kom tswj tau cov cua sov no, siv hluav taws xob ntau. Kub dip galvanizing ntawm hlau hauv tsev yog txheej txheem nyuaj.

Technologically, cov txheej txheem muab faib ua ob theem. Qhov no yog kev npaj thiab galvanizing ntawm hlau. Thaum thawj theem, lawv koom nrog kev npaj cov khoom siv hlau. Nws qhov chaw yuav tsum tau degreased thiab ntxuav ntawm cov khib nyiab. Qhov no yog ua raws li pickling, ntxuav thiab ziab.

Cov haujlwm no tau teev tseg hauv cov ntaub ntawv tswj hwm.

Yuav kom zinc ib feem, koj yuav tsum muab tso rau hauv ib da dej tshwj xeeb. Nws muaj cov tshuaj tshwj xeeb uas tiv thaiv corrosion. Txoj kev kho cov hlau thaum kub-dip galvanizing tuaj yeem sib txawv. Lawv nyob ntawm seb hom thiab cov duab ntawm cov khoom. Cov thev naus laus zis no tau siv ntau hauv kev lag luam. Piv txwv li, rau kev tsim cov galvanized hlau, kav dej, thiab lwm yam.

Tom qab siv cov txheej txheem kub rau lawv, cov khoom muaj lub neej ua haujlwm ntev, uas yog, lawv muaj kev ntseeg siab tiv thaiv corrosion. Da dej yog qhov teeb meem nkaus xwb. Txhawm rau ua cov khoom loj, nws yog ib qho tsim nyog yuav tsum nrhiav ib chav da dej uas tsim nyog, uas yog qhov nyuaj heev. Xws linta cuam tshuam cov nqi. Qhov twg yog qhov kub-dip galvanizing tiav? Kursk, Moscow, Chelyabinsk, Yaroslavl - qhov no tsuas yog ib daim ntawv teev npe me me ntawm lub nroog uas muaj ntau lub tuam txhab muab cov kev pabcuam no. Feem ntau lawv ua haujlwm nrog cov ntim loj.

Galvanic galvanizing ntawm hlau - technology

Txoj kev no yog siv thaum xav tau ib qho chaw du. Cov thev naus laus zis ntawm galvanizing hlau los ntawm txoj kev galvanic yog ua raws li kev kho cov khoom ntawm qhov chaw ntawm cov khoom vim electrochemical kev txiav txim. Txoj kev no yog tsim nyog rau txhua hom hlau kiag li. Cov khoom tau txais ib lub teeb ci ntsa iab. Qhov no yog vim kev sib xyaw ntawm cov hlau txheej thiab zinc.

Qhov kev cuam tshuam no cuam tshuam los ntawm kev muaj ntau yam khib nyiab lossis lwm yam yeeb yaj kiab ntawm qhov chaw. Yog li ntawd, ua ntej pib txheej txheem, koj yuav tsum ua qhov kev tu. Hauv kev tsim khoom loj, qhov no nyuaj ua raws, yog li galvanizing tej zaum yuav tsis zoo.

Cov txheej txheem galvanic yog ua raws li cov khoom siv hlau tso rau hauv da dej uas muaj cov tshuaj electrolyte. Ib lub zog hluav taws xob txuas nrog lub workpiece. Hauv qhov no, cov txheej txheem ntawm electrolysis tshwm sim. Zinc raug rau nws, uas npog cov hlau.

Pros

Lub ntsiab zoo zoo yog qhov zoo li ntawm cov khoom - lub nto yog du thiab ci. Txawm li cas los xij, kuj tseem muaj qhov tsis zoo. Ua ntej tso cov tshuaj uas muaj nyob rau hauv chav dej, nws yog ib qhov tsim nyog los ntxuav nws los ntawm zinc. Nrog rau txoj kev no, ib tug lojtus nqi ntawm cov pov tseg uas ua phem rau ib puag ncig. Yog li ntawd, nws yog ib qho tsim nyog yuav tau yuav cov cuab yeej kim tshwj xeeb. Nws yuav tso cov zinc los ntawm kev daws. Yog li, txoj kev no yog ib qho kim tshaj plaws.

Yuav ua li cas galvanized hlau hauv tsev?

Cov txheej txheem no yog siv los ntawm ntau tus tswv thaum nws tsim nyog los ua cov ntsiab lus me me. Ua ntej koj yuav tsum nrhiav lub thawv tsim nyog thiab ua ib qho electrolyte. Cov txheej txheem yog ua nyob rau hauv ib qho chaw zoo-ventilated thiab nyob rau hauv cov khaub ncaws tiv thaiv, raws li electrolyte hais yuav ua mob rau ib tug neeg. Kev sib cuag nrog daim tawv nqaij yuav ua rau muaj tshuaj lom neeg kub hnyiab. Rau kev ua noj, lawv siv dej, zinc sulfide, magnesium thiab vinegar. Cov concentrate tiav yuav tsum tau lim. Tom ntej no, cov hlau feem yog qis rau hauv lub thawv thiab cov khoom anode yog npaj. Ib tug tooj liab hlau yog txuas mus rau ib qho me me ntawm zinc, uas txuas nrog lub mains. Cov khoom yog txo qis rau hauv cov electrolyte thiab cov txheej txheem pib. Tom qab ntawd, cov hlau feem yog qhuav. Galvanizing hlau hauv tsev yog qhov yooj yim ua.

Txoj kev txias txias

Nyob rau xyoo tas los no, txoj kev no tau dhau los ua dav. Nws lub ntsiab lus nyob rau hauv qhov tseeb hais tias cov khoom hlau yog pleev xim rau cov khoom tshwj xeeb uas muaj zinc. Txoj kev no tsis tas yuav muaj kev txawj tshwj xeeb. Txawm li cas los xij, tseem muaj qhov tsis zoo: cov khoom tiav galvanized raug rau cov neeg kho tshuab kev nyuaj siab. Tsis tas li ntawd, nws yog ib qho tsim nyog yuav tsum tau saib xyuas tas li cov neeg ua haujlwm txawj uas npaj cov kev daws teeb meem thiab ua haujlwm. Raws li haisyav dhau los, txoj kev no yog qhov yooj yim heev. Yog li ntawd, cov khoom siv rau txias galvanizing ntawm hlau tsis tas yuav tsum tau. Kev ua haujlwm yuav tsum tau ua raws li kev cai huv thiab huv. Siv txoj kev no, cov kav dej tau ua tiav, nrog rau cov khoom lag luam uas nyob hauv ib qho kev ruaj khov. Ua li no, npaj cov tshuaj thiab siv rau cov khoom siv nrog txhuam los yog cov menyuam. Tsuas yog cov khoom txias galvanizing uas siv yog rab phom tsuag. Nws pab kom nkag mus rau qhov chaw nkag tsis tau thiab ua tha xim sib npaug thiab ua tau zoo. Ntawm qhov tsis txaus, ntau tus neeg siv sau tseg tsis tshua muaj kev ntseeg siab.

Thermal Diffusion Galvanizing Technology

Txoj kev no tau siv los ntev, tab sis nws tseem niaj hnub no.

Nws yog thawj zaug siv hauv tebchaws Askiv thaum kawg ntawm xyoo pua 19th. Lub invention tau nto moo ua tsaug rau tus naas ej kws tshawb fawb Sherard. Txawm li cas los xij, txoj kev no tau hnov qab sai sai, hloov nws nrog lwm tus. Nws lub rooj txhawb siab poob rau thaum xaus ntawm lub xyoo pua nees nkaum. Cov thev naus laus zis ntawm cov txheej txheem thermal diffusion nyob rau hauv qhov tseeb tias qhov chaw ntawm cov khoom hlau raug kho nrog zinc hauv lub xeev vapor. Ua li no, nws yuav tsum tau rhuab mus rau 2500ºС. Cov txheej txheem yog nqa tawm nyob rau hauv ib lub thawv kaw nrog ib tug zinc-muaj sib tov thiab hlau ntsiab nyob rau hauv nws. Cov thev naus laus zis rau kev ua cov txheej txheem no yog txiav txim siab tsis yog los ntawm domestic xwb, tab sis kuj yog los ntawm cov ntaub ntawv tswj hwm txawv teb chaws.

Thermal diffusion galvanizing yog ua thaum nws tsim nyog kom ua tiav qhov tuabua 20m. Cov txheej txheem thev naus laus zis zoo ib yam li kub dip galvanizing. Txawm li cas los xij, kuj muaj qhov sib txawv. Cov khoom npaj tau qis dua rau hauv lub tshuab ziab khaub ncaws, qhov chaw ua haujlwm vim muaj kev sib hloov. Cov txheej txheem no ua tiav hauv 3 teev ntawm kev ua haujlwm ntawm cov cuab yeej no. Nrog nws, ntau yam me me tau pleev xim rau, xws li cov ntxhua khaub ncaws thiab cov ntsia hlau.

Tsis zoo li txoj kev kub, daim ntawv thov ntawm zinc plua plav tshwm sim sib npaug ntawm tag nrho saum npoo.

Zaj lus

txheej txheem no pab tiv thaiv ntau yam hlau los ntawm corrosion, noo noo, thiab aggressive tshuaj. Muaj 4 hom kev siv tshuab galvanizing. Txhua tus ntawm lawv muaj nws tus yam ntxwv thiab haum rau ib yam ntawm cov hlau. Qhov tsis sib xws ntawm cov khoom siv no yuav ua rau cov khoom tsis zoo staining thiab, vim li ntawd, kom txo qis lub zog ntawm cov khoom tiav. Galvanizing yuav siv qhov chaw nyob rau hauv tshwj xeeb da dej los yog nruas furnaces. Txawm li cas los xij, cov txheej txheem tuaj yeem ua tiav tom tsev. Txhawm rau ua qhov no, koj yuav tsum tau yuav cov khoom siv. Kev ua haujlwm yog ua nyob rau hauv qhov chaw ua pa hauv cov khaub ncaws tiv thaiv tshwj xeeb, vim qee yam khoom muaj kev phom sij rau tib neeg lub cev.