Ib nqe lus mus rau lub xiav tob: kev sib tham ntawm cov tseem ceeb tshaj plaws yuav tsum tau rau anti - corrosion coated txhuas coures rau nkoj
Cov tub rog marine yog ib qho ntawm feem ntau xav tau corrosive ib puag ncig hauv ntiaj teb. High salinity, High humidity, ultraviolet rays, microorganisms, thiab kub hloov pauv ua qhov kawg ntawm cov ntaub ntawv. Ua ntawv thov cov coinate coils rau nkoj mus rau nkoj ntau dua li tsuas yog siv cov ntaub ntawv pej xeem ntiag tug; Nws yuav tsum tau kov yeej cov txheej txheem ntawm txoj hlua daws teeb meem. Hauv qab no yog cov tseev kom tseem ceeb uas yuav tsum tau ntsib, sawv cev rau cov kev cai "hlau" uas txiav txim siab nws muaj kev nyab xeeb thiab txhim khu kev qha hauv cov nkoj.
1. Corrosion Kuj: Lub Lifeline
Qhov no yog qhov tseem ceeb ntawm tag nrho cov txuj ci ua tau thiab txiav txim siab ncaj qha kev txij nkawm thiab kev nyab xeeb ntawm lub nkoj.
1) Cov ntsev txau ntau tiv tshuaj
* Requirement: Must pass a neutral salt spray test (NSS, ASTM B117 / ISO 9227) of 1000 hours or more. Nov yog daim pib nkag "nkag mus nkag." Rau cov chaw xav tau ntau dua, xws li cov nquag tawm los, tus qauv yuav tsum tau tsa rau 3000 teev lossis ntev dua.
* Kev lees paub txog cov txheej txheem: Tom qab kuaj, ib qho {{0} {{{{{1} {{1} {4 4}} cov khoom lag luam siab). Cov cheeb tsam tsis muaj peev xwm yuav tsum muaj kev tsis xws luag xws li blistering, liab xeb, thiab flaking. Qhov kev sim sim no simulates ntev- ntu kev corrosion nyob rau hauv lub marine huab cua thiab yog ib qho kev sim ua kom nrawm nrawm rau kev kwv yees lub neej pabcuam.
2) Adhesion zoo heev
* Yuav tsum muaj: Adhesion zoo heev ntawm txheej thiab cov txhuas substrate, nrog rau ntawm txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej.
* Txais cov txheej txheem lees paub:
* Hla - txiav txoj kev (astm d3359): Ua tiav qib siab tshaj plaws, ua tiav qib 0), txhais tau tias tus txiav ciab yog tsis muaj tev.
* Rub {{- tawm txoj kev (Astm D4541): Adhafle lub zog yuav tsum muaj ntau dua los yog sib npaug rau 5 MPA. Siab - Performance epoxy primers lossis cov tshuab sau txheej txheej txheej feem ntau yuav tsum muaj ntau dua lossis sib npaug rau 7 MPa. Zoo heev adhesion kom paub tias cov txheej yuav tsis tev hauv qab kev ntxhov siab xws li nkoj kev co thiab deformation.
2. Ib puag ncig tsis kam thiab kav ntev
Cov nkoj tau raug rau ntau yam ntawm huab cua thiab tshuaj ib puag ncig, thiab cov txheej txheem yuav tsum muaj peev xwm tiv thaiv lawv nrog yooj yim.
3) Tshuaj tiv thaiv
* Yuav tsum muaj: Yuav tsum tiv thaiv cov roj twj tso kua mis ntau, cov roj, ua kom huv cov neeg sawv cev, cov tshuaj tua dej cawv, thiab ua luam dej da chlorine.
* Kev lees paub txog cov txheej txheem: Qhov chaw kuaj (ASTM D1308) feem ntau siv. Cov tshuaj tshwj xeeb yog siv rau txheej txheej sib txawv thiab so tom qab lub sijhawm tshwj xeeb ntawm lub sijhawm (piv txwv li, 24 teev). Cov txheej yuav tsum muaj tsis muaj kev hloov uas pom tau, xws li poob ntawm ci, tshem tawm, softening, lossis blistering.
4) UV & Huab Cua Kuj
* Yuav tsum muaj: nkoj cov khoom siv tau nthuav tawm kom muaj zog UV hluav taws xob rau lub sijhawm ntev, thiab cov txheej yuav tsum tiv thaiv chalking thiab tswj nws cov gloss thiab xim.
* Txais cov txheej txheem lees paub:
* Xenon arc Weather Kuaj (ASTM G155): hla kev xeem tsawg kawg 2000 teev. * Fluorescent UV Wightsing Kev Ntsuam Xyuas (ASTM G154): Dhau tsawg kawg 1000 teev ntawm kev sim.
* Tom qab kuaj, xim xim txawv (ΔE) yuav tsum<2.0 (almost indistinguishable to the naked eye), the gloss retention should be ≥85%, and there should be no chalking (grade ≥8).
3. Neeg kho tshuab thiab lub cev ua haujlwm ntsuas
Cov ntsuas no ua kom cov txheej txheej tswj nws txoj kev ncaj ncees thaum tsim khoom, kev ua haujlwm, thiab siv.
5) Hloov pauv thiab cuam tshuam tsis kam
* Yuav tsum tau: Lub pob khaus hu ua kev khoov, stamping, thiab lwm yam txheej txheem, thiab cov txheej txheem yuav tsum muaj peev xwm ua kom muaj kev puas tsuaj.
* Txais cov txheej txheem lees paub:
* Khoov tsis kam: khoov 180℃ib ncig ntawm ib tug ncej ntawm cov cheeb tsam teev (piv txwv li, 2t, 3t), uas tsis muaj kev tawg lossis tev ntawm cov txheej ntawm khoov.
* Kev cuam tshuam Kuj: tom qab kev sim cuam tshuam lossis thim rov qab los ntawm kev sim siab (ASTM D2794), tsis muaj kev sib tsoo radial lossis flaking tshwm sim hauv thaj chaw cuam tshuam. Nws yog feem ntau yuav tsum tau tiv thaiv kev cuam tshuam lub zog tsawg kawg yog 50 kg cm.
6) Hardness thiab puas tsis kam
* Yuav tsum muaj: resistant rau khawb thiab rhuav tshem los ntawm lawj kev tsheb, nqa khoom, thiab khoom sib txhuam.
* Txais cov txheej txheem lees paub:
* Mem hluav hardness (ASTM D3363): Feem ntau yuav tsum muaj ntau dua lossis sib npaug h lossis ntau dua lossis muaj ntau dua lossis muaj ntau dua lossis sib npaug.
* Taber Puas Ua Ntej (Astm D4060): Raws li ib tug muaj qee tus naj npawb ntawm kev sib hloov, qhov hnyav poob yuav tsum tsawg dua los yog sib npaug nrog 50 mg.
4. Kev nyab xeeb thiab ua raws li cov ntsuas
Rau cov ntawv thov marine, kev nyab xeeb yog qhov tseem ceeb tshaj plaws.
7) Hluav Taws Kub
* Qhov taw qhia yuav tsum muaj: qhov no yog qhov ntsuas tau. Txhua cov ntaub ntawv yuav tsum ua raws li cov koom haum thoob ntiaj teb (IMO) kev nyab xeeb hluav taws.
* Kev lees paub cov ntsiab lus: Nyob ntawm daim ntawv thov chaw, cov khoom yuav tsum tau twv kom tsim nyog kuaj cov hluav taws thiab tau txais kev muaj ntawv pov thawj haum. Piv txwv li:
* Cov nplaim hluav taws me me kis tau: Tshaj tawm IMO FTP code Part 8 Xeem, thiab cov khoom siv saum npoo yuav tsum tau ua kom tau raws li tsis yog los ntawm cov nplaim hluav taws xob tsawg.
* Cov pa luam yeeb lom: cov tshuaj lom thiab ntom ntawm cov pa luam yeeb tsim nyog thaum lub sijhawm sib txuas yuav tsum tau ua raws cov qauv (IMO FTP code Part 2).
Ua kom tiav cov txheej txheem zoo
Thaum kawg, anti - corrosion coated aluminium coils haum rau cov ntawv thov marine xav tau ntau tshaj li tsuas yog dhau ntawm cov kev ntsuam xyuas tus neeg. Tom qab no cov lus dag ib qho kev paub tseeb zoo:
* Nruj xim txheej txheem: feem ntau yog ob - powcoat) los yog tuab} passcoat + topcoat). Tus thawj pib epoxy (rau adhesion thiab corrosion tiv thaiv), thaum lub topcoat yog polyuretholarbon (rau huab cua tsis kam thiab ua kom zoo nkauj).
* Cov Ntawv Cog Lus: Cov khoom yuav tsum muaj ntawv pov thawj los ntawm cov tib si thoob ntiaj teb kev faib tawm loj, xws li:
* Miskas Bureau ntawm shipping (ABS)
* DET NORKE VARITAS (DNV - gl)
* Bureau Veritas (BV)
* Tuam Tshoj Kev Koom Tes Hauv Lub Koom Txoos (CCS)
* Cov ntawv pov thawj no tau lees paub kev ua tau zoo.
* Traceability thiab xws li: txhua lub pob khoom yuav tsum tau nrog daim ntawv pov thawj ua tiav ntawm qhov ua tau zoo (coca) kom paub tseeb ntawm kev ua tau zoo nrog kev ntsuas.
Xaus:
Tsuas yog cov coatated txhuas coils uas ua kom tiav ntawm plaub qhov tseem ceeb ntawm kev kho corrosion, kev ua kom zoo nkauj, thiab kev nyab xeeb ua rau "hla" rau qhov xiav sib sib zog nqus. Cov nkoj thauj khoom thiab cov nkoj thauj khoom yuav tsum saib xyuas cov khoom pov thawj ntawm cov neeg xa khoom, tsis yog qhov tseeb- lub sijhawm muaj kev nyab xeeb thiab tus nqi ntawm lawv cov hlab.