Txias ua-nws-koj tus kheej galvanizing

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

Corrosion ntawm hlau tshwm sim thaum nws cuam tshuam nrog atmospheric oxygen. Txhawm rau zam qhov no thiab txuas ntxiv lub neej kev pab cuam ntawm cov khoom siv ob peb zaug, nws yog ib qho tsim nyog yuav tsum tau ua cov txheej txheem tiv thaiv. Feem ntau siv zinc plating. Cov txheej txheem no muaj nyob rau hauv kev thov ib txheej ntawm zinc rau saum npoo ntawm cov khoom. Cov txheej txheem no tuaj yeem ua rau ntau txoj hauv kev.

Ntau yam kev ua haujlwm

Hnub no, kev txhim kho ntawm cov kws tshawb fawb tau tso cai siv cov hauv qab no:

- txias galvanized hlau;

- kub;

- diffusion;

- electrolytic;

- khoom;

- gas dynamic.

Peb mam li tham txog txhua txoj kev sib cais tom qab.

Kev piav qhia ntawm hom galvanizing

Ob hom tuaj yeem suav hais tias yog hom - kub thiab electrolytic. Nyob rau hauv rooj plaub no, thawj txoj kev, tseem hu ua galvanic, yuav tsum muaj kev tsim kho ntawm tag nrho cov kab ntau lawm. Tab sis txoj kev no tsis zoo tiv thaiv corrosion. Txawm li cas los xij, nws muab cov khoom zoo nkauj thiab ci ntsa iab. Yog li electrolytic galvanizing tsuas yog siv rau kev kho kom zoo nkauj xwb.

Kub galvanizing yog ib qho lag luam kim heev. Rau nwsib feem yuav tsum tau immersed kiag li nyob rau hauv lub molten zinc. Cov txheej txheem zoo li no tsuas yog ua los ntawm kev lag luam thiab yuav tsum muaj ntau lub zog thiab kev ua haujlwm. Qhov saum npoo ntawm cov khoom tsis glossy, tab sis matte. Tab sis txheej txheej muaj zog heev uas nws tuaj yeem muab piv nrog cov hlau tsis muaj steel nyob rau hauv cov nqe lus ntawm corrosion kuj.

Kub thiab txias galvanizing tau ua pov thawj nws tus kheej li kev tiv thaiv hlau. Thaum zinc hmoov lossis chav siv rau saum npoo ntawm cov khoom siv kub, cov txheej txheem no hu ua diffusion txheej. Yog tias zinc hauv lub xeev molten yog siv nrog rab phom, zoo li dyeing, ces qhov no yog khw.

Zinc txheej txheej txheem siv supersonic ntws - roj dynamic txheej. Txoj kev no tau nce adhesion thiab muaj txiaj ntsig zoo hauv qhov no piv nrog lwm tus.

Txhua txoj hauv kev saum toj no tuaj yeem siv tau yooj yim ntawm kev lag luam hauv kev tsim khoom tshwj xeeb, tab sis hauv tsev, cov txheej txheem no yuav nyuaj heev rau siv, thiab qee qhov yooj yim ua tsis tau.

Txhawm rau kom cov qauv hlau ua tau raws li qhov yuav tsum tau ua thiab kev pabcuam lub neej, nws yuav tsum tau tsim ua raws li cov ntaub ntawv tswj hwm. Cov kev cai no tau hais meej meej hauv GOST.

Txias galvanizing yog feem ntau thiab pheej yig txoj hauv kev los tiv thaiv hlau los ntawm corrosion. Nws tsis xav tau cov cuab yeej tshwj xeeb thiab cov txheej txheem thev naus laus zis. Kev siv cov zinc-muaj cov ntsiab lus tsis yognyuaj tshaj tha xim.

Cov ntsiab lus ntawm cov khoom muaj pes tsawg leeg, uas yog siv rau txias galvanizing ntawm hlau, kom meej meej tswj los ntawm GOST. Nws yuav tsum muaj tsawg kawg yog 94 feem pua zinc.

khoom no yog dab tsi?

Zinc yog ib yam tshuaj muaj nyob rau hauv pab pawg neeg hlau. Nws muaj ib tug silvery dawb xim. Nyob rau hauv nws daim ntawv ntshiab, nws muaj ib tug tsis yooj yim qauv. Nws reacts nrog atmospheric huab cua, uas yog nrog nws cov Cheebtsam: carbon dioxide thiab oxygen. Vim yog cov tshuaj tiv thaiv no, ib qho oxide tshwm rau ntawm qhov chaw, uas muaj lub zog ntawm daim ntawv cog lus siab thiab tsis raug cuam tshuam.

Lub peev xwm ntawm cov khoom siv hluav taws xob ntawm zinc yog halved piv rau hlau. Yog li ntawd, khub ntawm cov tebchaw yog cov anode nyob rau hauv daim ntawv ntawm zinc thiab lub cathode yog hlau. Thaum raug rau atmospheric noo noo, zinc reacts nrog nws, thiab carbonate yog tsim. Nws yog nws thiab nws cov oxide uas tsis yaj, tab sis npog cov khoom nrog ib zaj duab xis.

Pros of txias processing

- Lub ntsiab kom zoo dua ntawm txoj kev txias galvanizing yog tias tsis muaj kev txwv ntawm lub ntim ntawm lub workpiece.

- Tsis tas yuav rhuav tshem cov khoom thiab xa mus rau qhov chaw ua haujlwm. Txhua yam tuaj yeem ua tau ruaj khov.

- Qhov saum npoo galvanized hauv txoj kev no tsis cuam tshuam nrog kev ua haujlwm vuam. Weld seams kuj tuaj yeem kho.

- Kev ua haujlwm txias ntawm cov qauv hlau nrog zinc tshwm sim ntawm qhov kub zoo - los ntawm -20 txog + 40 degrees.

- TxheejKev tiv thaiv zoo tiv thaiv corrosion, thiab nws tus kheej tsis raug deformations loj, vim nws hloov mus ua elastic heev.

- Txias galvanizing tso cai rau koj siv ntau yam xim sib xyaw rau saum npoo.

- Kev ua haujlwm tuaj yeem ua tiav ntawm nws tus kheej, tsis muaj cov cuab yeej tshwj xeeb thiab tshuab.

- Txias galvanizing GOST 9.305-84 yog tswj kom meej meej nyob rau hauv cov nqe lus ntawm muaj pes tsawg leeg thiab cov khoom.

- Tus nqi qis.

Ua los ntawm koj tus kheej

Cov txheej txheem no tiv thaiv cov hlau los ntawm corrosion tuaj yeem nqa tawm hauv tsev, thaum saib xyuas kev ceev faj. Ntxiv nrog rau txoj kev txias, kev kho galvanic tuaj yeem ua tiav. Tab sis koj yuav tsum nco ntsoov tias xws li ib qho electrolyte yog ib qho tshuaj lom heev. Nws yuav tsum tau ua tib zoo saib xyuas thiab ua tib zoo, xyuas kom muaj cov khoom tiv thaiv tus kheej.

Kev tsim kho kev lag luam nthuav tawm ntau yam cuab yeej uas tso cai rau txias galvanizing ntawm cov qauv hlau hauv tsev. Qee lub sij hawm cov ntsiab lus ntawm cov ntsiab lus tseem ceeb hauv lawv txawv ntawm ntau yam. Raws li, qhov qis nws feem pua yuav, qhov qis nws feem pua.

Cov ntawv sau zoo li no yuav muaj lwm qhov tsis zoo:

- xav tau kev npaj ceev faj ntxiv;

- adhesion tsis zoo rau cov hlau, vim tias cov microcracks tsim ntawm txheej vim tsis muaj elasticity;

- qee lub tuam txhab siv tsuas yog cov kuab tshuaj tshwj xeeb, uas ua rau kev ua haujlwm nyuaj;

- qee qhov xav tau lub tshuab tshwj xeeb los thov;

- lwm tustsuas yog tsis npaj rau kev pleev xim ntxiv.

Galvanol

Kev ua tau zoo thiab cov lus pom zoo rau cov neeg siv khoom, muaj cov khoom xws li "Galvanol".

Nws cov khoom:

- muaj cov ntsiab lus siab ntawm cov hmoov zinc ntshiab, uas ncav cuag 96%;

- kom qhuav sai, ua ntej siv cov khaubncaws sab nraud povtseg koj yuav tsum tau tos tsis pub dhau ib nrab teev;

- nws muaj peev xwm siv tau xws li txias galvanizing los ntawm txhua txoj kev paub: txhuam, cov menyuam, raus dej lossis rab phom tsuag;

- haum rau kev pleev xim ntxiv nrog cov xim thiab cov kua roj vanish, nrog rau cov txheej txheem polymer;

- tuaj yeem siv yam tsis muaj xeb ua ntej;

- tsis poob nws cov khoom thaum siv qhov kub thiab txias (txog -35 degrees), nrog rau cov av noo ntawm qhov chaw;

- tsis xav tau cov kuab tshuaj tshwj xeeb. Haum universal, xws li hnyav lossis xylene.

Cov neeg siv khoom ua kom txias galvanizing nrog cov ntaub ntawv no tawm feem ntau cov kev tshuaj xyuas zoo. Hlau tiv taus corrosion rau ntau xyoo.

Yuav ua li cas

Kev siv thev naus laus zis:

- kua zinc yog sib xyaw zoo, vim tias nws muaj qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom. Nws yog tsim nyog kom tau ib homogeneous kua mass. Cov khoom npaj tau zoo npaum li cas los tiv thaiv cov khoom nyob ntawm seb cov txheej txheem tiv thaiv corrosion yuav kav ntev npaum li cas;

- mechanically clean the part;

- degrease saum npoo txhua txoj kev ua tau;

- siv cov txheej txheem tom ntej ntawm qhov muaj pes tsawg leeg tsis pub dhautom qab ib nrab teev. Kev tiv thaiv hauv ob txheej zinc yuav kav ntev li 10 xyoo;

- txheej kawg, uas yuav muab cov khoom ua tiav, thov zoo dua tom qab tos ib hnub.

Thaum txias galvanizing ua tiav, thev naus laus zis yuav tsum ua raws. Tsuas yog tom qab ntawd cov txiaj ntsig ntawm kev ua haujlwm tom tsev yuav tsis paub qhov txawv ntawm lub hoobkas.

Galvanic

Txhua qhov galvanizing yuav tsum tau saib xyuas zoo thiab raug, tshwj xeeb hauv tsev. Qhov chaw tam sim no rau txoj kev no tuaj yeem yog lub tsheb roj teeb lossis ib lub charger uas muaj zog txog 12 V.

Ntsev yog haum raws li cov electrolyte. Tab sis nws yog qhov zoo dua yog tias nws yog zinc. Txhawm rau ua nws koj xav tau:

- zinc sulfate - 200 g;

- magnesium lossis ammonium sulfate - 50 g;

- sodium acetate - 15 g;

- liter dej.

Koj tuaj yeem ua ntsev los ntawm lwm txoj kev los ntawm kev tso zinc rau hauv lub roj teeb electrolyte thiab tos kom cov tshuaj tiv thaiv kom tiav, tom qab ntawd cov kua qaub yuav hloov mus rau hauv ntsev. Txawm li cas los xij, nws cov concentration tuaj yeem siab. Ces ntsev yog diluted nrog dej.

Qhov tseem ceeb! Electrolyte yog tshuaj lom, ua haujlwm nrog nws yuav tsum tau ua nrog ceev faj heev. Chav yuav tsum muaj cua zoo thaum ua haujlwm.

tais rau kev ua yuav tsum yog iav lossis yas tshwj xeeb. Ib lub zinc electrode txuas rau nws. Nrog rau qhov me me ntawm cov ntsiab lus, ib lub hub hauv tsev yooj yim yog qhov tsim nyog. Ib feem yuav tsum tau zoo ntxuav thiab degreased. Nws yuav tsum tau txo qis rau hauv cov tshuaj npaj kom tsis pub ntev tshaj 10 vib nas this. Cestshem tawm thiab yaug kom huv si nrog dej. Tom qab ntawd, koj yuav tsum tau anodize ib feem. Rau qhov no, zinc electrode yog tsim, txuas nrog lub zog hluav taws xob. Kev tsim cov yeeb yaj kiab zinc tshwm sim hauv 10-40 feeb.

Nyiaj kub kub galvanizing compounds

Ua ib feem ntawm "Barrier-zinc" cov ntsiab lus ntawm cov tshuaj nquag - 96%. Lub sijhawm tiv thaiv yog los ntawm 10 txog 50 xyoo. Nws yog kev lag luam zoo, vim nws muaj kev noj tsuas yog 1 kg ib 4 m 2. Tus nqi - los ntawm 300 rubles ib kg.

"Zinol" - zinc-muaj xim nrog 95% cov ntsiab lus ntawm cov tshuaj nquag. Tus nqi - los ntawm 340 rubles ib kg.

Zinga yog Belgian tsim cov khoom sib xyaw uas tso cai rau txias galvanizing thiab muaj tag nrho cov khoom tsim nyog los tiv thaiv hlau los ntawm corrosion. Tus nqi - los ntawm 576 rubles ib kg.

Twb tau hais los ntawm peb "Galvanol" yog cov tshuaj nrov tshaj plaws ntawm cov tshuaj analogues. Nws muaj 96% zinc cov ntsiab lus nyob rau hauv muaj pes tsawg leeg thiab tag nrho cov khoom tsim nyog. Tus nqi - los ntawm 390 rubles ib kg.

"Zinotan" - tsuas muaj 85% zinc. Tus nqi - los ntawm 380 rubles ib kg.

Cov tshuaj tiv thaiv raws li zinc muaj nyob rau hauv ntau yam. Tus nqi nyob ntawm qhov tsis tsuas yog nyob ntawm cov ntsiab lus ntawm zinc, tab sis kuj nyob ntawm qhov chaw ntawm cov khoom tsim. Lwm qhov sib xyaw uas tso cai rau txias galvanizing yog Zinol.

Yuav ua li cas xaiv qhov zoo

Thaum yuav cov nyiaj tsim nyog, nws yog qhov zoo dua los ua tib zoo saib ua ntej rau nws cov ntsiab lus thiabtshaj tawm cov khoom. Xim ntxoov tsis txawv ntawm ntau yam, feem ntau yog matte grey. Kev siv thaum lub sij hawm thov yog yuav luag tib yam - tsis ntau tshaj 300 g / m2.

Yog li, cov qauv no tsis tuaj yeem suav tias yog qhov tseem ceeb thaum xaiv, tab sis qhov tseem ceeb:

- kev pabcuam lub neej;

- nqi;

- lub sijhawm ziab;

- zinc cov ntsiab lus;

- txee lub neej;

- daim ntawv thov tej yam kev mob.

Zaj lus

Yog li, peb pom tias txias galvanizing ntawm cov qauv hlau ua li cas. Raws li koj tuaj yeem pom, qhov no yog ib txoj hauv kev zoo los tiv thaiv cov hlau nto ntawm qhov tsis zoo ntawm corrosion, yog li ua rau nws txoj kev pab cuam lub neej.