Painting aluminium thiab lwm yam hlau tsis muaj hlau muaj qee qhov teeb meem nrog oxidation ceev. Raws li kev cuam tshuam ntawm oxygen, oxide zaj duab xis tsim rau ntawm cov khoom, uas txo cov adhesion ntawm cov txheej, nrog rau cov kua roj vanish thiab primers. Vim li no, tus kheej xim feem ntau luv luv thiab tsis zoo li qhov zoo tshaj plaws.
Anodizing
Txawm hais tias muaj ntau yam ntawm cov primers niaj hnub, lawv tsis muab cov nyhuv uas xav tau, thiab cov xim txheej txheej tawm ntawm qhov cuam tshuam me ntsis.
Nws tuaj yeem txhim kho adhesion ntawm cov xim thiab aluminium nto los ntawm anodizing hlau. Cov txheej txheem no muaj nyob rau hauv electrochemical lossis tshuaj kho mob, vim qhov kev siv ntawm oxidation raug txo. Yuav luag tag nrho cov khoom siv hlau uas tsis yog-ferrous pleev xim rau hauv cov xwm txheej ntau lawm dhau los ntawm anodizing ntawm cov khoom siv tshwj xeeb.
Khoom siv thiab cuab yeej
Nyob hauv tsev, koj tuaj yeem ua cov txheej txheem nosiv cov primers tshwj xeeb. Hmoov txheej anodized txhuas siv sij hawm ntau dua thiab nce nqi, tab sis qhov tshwm sim yog tsim nyog rau kev siv zog. Ua ntej koj yuav tsum tau npaj cov cuab yeej thiab cov ntaub ntawv, yam tsis muaj qhov nws ua tsis tau kom ua tiav cov txheej txheem ruaj khov thiab zoo:
- tshuaj tsuag, menyuam lossis txhuam;
- zoo grit sandpaper (yuav tsum tau rau matting aluminium nto);
- thawv rau tso qhov chaw yuav tsum tau ua;
- vinegar rau diluting cov xim muaj pes tsawg leeg;
- aniline dye;
- degreaser;
- khoom rau electrolytic muaj pes tsawg leeg (dej, ntsev, ci dej qab zib).
Kev nce qib ntawm kev ua haujlwm
Painting aluminium pib nrog kev sib xyaw ntawm cov khoom xyaw rau cov khoom siv electrolytic thiab kev npaj cov tshuaj. Tus nqi ntawm cov dej yuav tsum txaus kom tag nrho submerge cov khoom txhuas. Lub resulting kua yog poured rau hauv ob lub thawv zoo tib yam. Soda yog poured rau hauv ib tug ntawm lawv nyob rau hauv ib tug ratio ntawm 1 mus rau 5 (soda thiab dej, raws li), ntsev yog ntxiv rau lwm yam nyob rau hauv tib tus nqi. Tom qab ntawd, cov kua yog tov kom txog thaum cov additives yog tag nrho yaj. Cov kauj ruam tom ntej yog lim thiab sib txuas cov muaj pes tsawg leeg ntawm ob lub nkoj. Kev daws yuav tsum tau khom, lub sijhawm no koj tuaj yeem zom cov hlau nto. Roj thiab av raug tshem tawm nrog daim ntaub ntub dej hauv acetone.
Ntxiv mus, tus kheej cov ntsiab lus tau yaug hauv qab ntwsdej thiab muab tso rau hauv ib lub thawv nrog ib tug tov. Koj yuav tsum xub hnav hnab looj tes roj hmab kom muaj kev nyab xeeb.
Lub davhlau ya nyob twg tsis zoo yog txuas nrog lub thawv nrog rau qhov chaw submerged, lub davhlau ya nyob twg zoo txuas ncaj qha rau cov khoom lawv tus kheej. Anodizing txuas ntxiv rau 2-3 teev kom txog thaum lub ntsej muag xiav-grey tshwm.
Ntxiv mus, txhuas tuaj yeem pleev xim rau hauv tsev. Cov xim muaj pes tsawg leeg muaj 1 liter ntawm kua, 20 grams ntawm aniline xim thiab 2 ml ntawm vinegar. Cov tshuaj yuav tsum tau rhuab mus rau 80 degrees nrog tas li stirring. Cov khoom uas tau dhau los ntawm cov txheej txheem anodizing yog muab tso rau hauv ib lub thawv nrog cov xim muaj pes tsawg leeg rau 15-20 feeb.
Painting aluminium: technology
Aluminium anodizing yog xaiv tau. Yog tias tsim nyog, koj tuaj yeem ua yam tsis muaj cov txheej txheem no, siv cov primer, uas tso cai rau koj kom ua tau zoo ntawm adhesion ntawm cov xim thiab hlau. Aluminium painting nrog primer yog nqa tawm siv cov ntaub ntawv thiab cov cuab yeej hauv qab no:
- kerosene, acetone thiab lwm yam degreaser;
- xim tshwj xeeb rau hlau;
- alkyd raws li primer;
- sandpaper;
- roller or txhuam.
Painting aluminium hauv tsev pib nrog sanding saum npoo kom ua rau adhesion rau primer. Qhov kev xaiv zoo tshaj plaws yuav yog abrasive nrog nruab nrab txheej. Tom qab ua tib zoo polishing, cov khoom raug kho nrog acetone siv ib daim ntaub tsis muaj lint. Rau kev tiv thaiv daim tawv nqaijtes yuav tsum hnav hnab looj tes roj hmab.
Tom ntej no, ib qho primer yog siv rau saum npoo. Nyob rau tib lub sijhawm, nws yuav tsum tau muab faib ua sai sai thiab tam sim ntawd tom qab ua tiav, txij li qhov ua tau ntev thiab kev ntseeg tau ntawm cov txheej yog nyob ntawm qhov no. Nws raug nquahu kom npaj cov primer muaj pes tsawg leeg ua ntej pib sib tsoo nto. Sagging thiab irregularities uas tau tshwm sim tom qab siv cov primer yuav raug tshem tawm nrog sanding daim ntawv.
Kev pleev xim ntawm txhuas yog ua tiav tsawg kawg ob lub tsho tiv no, thiab lub tsho qub yuav tsum qhuav tag ua ntej siv txhua yam.
Powder paints
Ib hmoov muaj pes tsawg leeg kuj yog siv los ua xim txhuas. Nws ua kom cov creation ntawm ib tug txhim khu kev qha check txheej nyob rau hauv daim ntawv ntawm ib tug monolithic txheej, uas tsis tsuas yog decorates cov khoom, tab sis kuj yuav txo tau ntawm corrosion.
Thawj kauj ruam yog kev npaj nto. Hauv kev lag luam, cov ntsev thiab cov khoom paug raug tshem tawm ntawm qhov chaw, tom qab ntawd lawv tau yaug nrog dej. Ntxiv rau cov txheej txheem degreasing, txhuas hmoov txheej muaj xws li phosphating, uas ua rau kom cov adhesion ntawm hlau thiab xim.
Tom qab ntawd cov ntsiab lus qhuav ntawm qhov kub thiab txias. Qhov tseem ceeb tshwj xeeb yog cov txheej txheem polymerization, uas muaj nyob rau hauv kev siv cov txheej txheem polymer tshwj xeeb hauv qab cua siab. Kev ua haujlwm yog ua los ntawm kev siv cov tshuaj tsuag electrostatic uas tsim cov txheej nyias nyias ntawm qhov chaw.
Tom qab siv cov xim, cov khoom txhuas raug muab tso rau hauvqhov cub tshwj xeeb thiab ci rau 200 degrees rau 10-15 feeb. Cov txheej txheem kho raws li cov hlau txias.
Kev siv cov cuab yeej tshwj xeeb thiab qhov cub ua rau cov txheej txheem ntawm cov hmoov pleev xim hauv tsev, uas yog vim li cas nws thiaj li feem ntau hloov nrog anodizing.
hmoov txheej yog ua tau ntawm txhua qhov txhuas. Cov txheej txheem no tau dhau los ua qhov dav tshaj plaws rau cov txheej txheem txheej uas tau npaj rau kev siv ntawm qhov kub txog li 220 degrees.
Txhob pleev xim rau
Ua ntej siv cov thev naus laus zis no, cov txheej txheem kev npaj khoom siv yog siv, piv txwv li, hauv anodizing. Ntawm cov yam ntxwv, nws yog ib qho tsim nyog yuav tsum tau ua kom muaj kev ncua deb ntawm qhov chaw thiab lub peev xwm, nrog rau kev siv ntau txheej txheej. Txij lub sijhawm ua ntawv thov txheej dhau los, tsawg kawg 20 feeb yuav tsum dhau, tsuas yog tom qab ntawd nws tuaj yeem npog nrog cov xim tom ntej. Tus naj npawb ntawm cov khaubncaws sab nraud povtseg txawv nyob ntawm qhov zoo ntawm cov khoom siv pleev xim thiab kev ua haujlwm ntawm ib feem. Qhov nruab nrab, nws tuaj yeem sib txawv ntawm 3-15 daim ntawv thov.
Ntse
Nws yog ib qho tseem ceeb tsis txhob hnov qab txog lub sij hawm tuav lub raj mis, qhov no yuav pab kom tsis txhob muaj streaks thiab streaks. Qee zaum, lub nozzle tuaj yeem txhaws. Txhawm rau ntxuav nws, nws yog ib qho tsim nyog yuav tsum tau tig lub kaus poom thiab tshuaj tsuag qhov sib xyaw kom txog thaum muaj cov pob tshab zoo li.
Tom qab pleev xim tiav, yog tias muajlawv cov seem yuav tsum tau muab tshem tawm nyob rau hauv ib qho chaw tiv thaiv los ntawm raug tshav ntuj. Cov cuab yeej siv yog ntxuav nrog cov kuab tshuaj. Aluminium painting yog ua tib yam, tsis hais cov khoom siv rau txoj haujlwm.
paj hom
Qhov kawg tshwm sim yog cuam tshuam tsis yog los ntawm kev ua raws li tag nrho cov subtleties ntawm kev ua haujlwm, tab sis kuj los ntawm qhov zoo thiab cov yam ntxwv ntawm cov xim xaiv. Qhov dav tshaj plaws tau txais ntau txoj kev xaiv:
- Acrylic muaj pes tsawg leeg tiv taus kev puas tsuaj, ya raws thiab kub hloov pauv sai. Cov xim pleev xim rau saum lub tsho tiv no.
- Epoxy yog tsim los ntawm cov resins tshwj xeeb, ua tsaug rau nws muaj cov yam ntxwv xws li kev ua haujlwm ntev thiab lub zog.
- Aniline yog thawj zaug tsim rau kev lag luam textile. Cov xim no yog qhov zoo tshaj plaws rau cov khoom siv txhuas uas tau dhau los ua cov txheej txheem anodizing. Tab sis nws tsis yog yam tsis muaj qhov tsis zoo, tshwj xeeb, muaj pes tsawg leeg yog tus cwj pwm los ntawm kev tiv thaiv tsis tshua muaj dej noo thiab tshav ntuj.
