High Anti-Corrosion Steel Supply rau 80MW Coastal PV Project, Mexico Project Txheej txheem cej luam

An 80 MW photovoltaic plant was developed in Sonora, Mexico, 1–5 km from the Sea of Cortés, in a climate with >80% humidity, heavy salt aerosol deposition, high UV, and strong winds. The client mandated a 25-year lifetime with >85% kev ua tau zoo ntawm xyoo 25, ntsib C4-C5 corrosivity rau ISO 12944-2: 2017. Peb lub peev xwm tsuas yog them xwbsiab -tiv thaiv-corrosion steel coils thiab daim hlaurau kho - qaij mounting lug -kub-dip galvanizedthiab ZAM (zinc{0}}aluminium-magnesium) coated khoom. Tag nrho lwm cov nyiaj tshuav - ntawm - cov cuab yeej siv tau muab los ntawm lwm tus neeg cog lus.

Cov chaw ntug dej hiav txwv zoo li Puerto Libertad ua kom nrawm nrawm ntawm cov ntsev-laden aerosols. Yog tias tsis muaj kev txo qis, galvanized steel tsim dawb xeb thiab pitting tsis pub dhau 2-4 xyoo, aluminium npoo corrode, thiab PID tuaj yeem ua rau lub zog poob txhua xyoo ntawm 1-2%. O&M cov nqi khiav 20-30% siab dua hauv av.

Peb soj ntsuam cov txheej txheej poob, rwb thaiv tsev tawg, thiab tu zaus. Standard HDG muab CAPEX qis dua tab sis ntev dua -lub sij hawm OPEX; Txhim kho cov txheej txheem tsa CAPEX los ntawm 10-15% tab sis txiav OPEX. Tom qab{5}}Kev soj ntsuam COD (12-18 lub hlis) siv cov kev tshuaj ntsuam pom, ASTM E376 sib nqus tuab ntsuas ntawm cov qauv coj mus kuaj, thiab IV nkhaus tracing ntawm 5-10% ntawm arrays los ntawm tus neeg koom ua ke.

Raws li ib tug tshwj xeeb coil thiab phaj tsum, peb tsis fabricate qhov kawg mounting lug; xwb, peb muabpremium coated steel coilsengineered tshwj xeeb los tiv thaiv qhov kev txhoj puab heev ntawm ntug dej hiav txwv ib puag ncig thaum muab kev ua haujlwm zoo rau peb cov neeg siv khoom ua haujlwm qis. Peb cov ntaub ntawv muaj xws li kub-dip galvanized thiabZAM{0}}coated coilsnrog rau cov txheej txheem customizable tag nrho - peb pom zoo yam tsawg kawg nkaus ntawm 320 g / m² (kwv yees . 45 µm) ib sab rau thaj tsam C4-C5, thiab txawm tias tuab duplex txheej (hlau puag + organic topcoat) rau txaws - thaj chaw muaj kev sib tw. Qhov kev xaiv ZAM, nrog rau nws cov txhuas thiab magnesium alloying, muab kev tiv thaiv zoo tshaj plaws thiab tus kheej - kho cov nyhuv ntawm cov npoo, uas yog qhov tseem ceeb thaum tus neeg cog lus txiav, xuas nrig ntaus, thiab yob- ua cov coils rau hauv purlins, kab teeb, thiab kab. Peb kuj tau muab zeb- ntug txias thiab lub teeb oiling los tiv thaiv kev thauj mus los, thiab muabslitting thiab txiav - mus rau - ntev cov kev pab cuamkom ua tau raws li tus neeg tsim khoom qhov yuav tsum tau muaj qhov ntev, txo ntawm - qhov chaw pov tseg thiab tuav sijhawm.

Dhau li corrosion kuj, peb tseem ceeb formability thiab weldability. Peb cov substrates tau qis- cov qib carbon steel nrog cov tshuaj chemistry thiab cov khoom siv kho tshuab, kom ntseeg tau tias kev khoov zoo ib yam, stamping, thiab vuam yam tsis muaj kev tawg lossis txheej delamination - ib qho teeb meem tsis tu ncua nrog cov ntaub ntawv nyuaj heev. Txhua kauj tuaj nrog daim ntawv pov thawj zeb tag nrho thiab traceability; peb tau ua nyob rau hauv - kab txheej thickness xyuas siv X-ray fluorescence, ntxiv los ntawm cross-section microscopy thiab adhesion tests. Thib peb-kev kuaj tshuaj ntsev ntsev (ASTM B117 sib npaug) tau lees paub dhau 3,000 teev yam tsis muaj xeb liab, ua haujlwm tau 25- xyoo kev pabcuam hauv Sonora ntug dej hiav txwv. Peb kuj tau muab rau ntawm - qhov chaw tshuaj ntsuam xyuas txheej txheej nrog cov ntsuas qhov ntsuas qhov hnyav thaum xa khoom, thiab peb tau koom tes nrog cov neeg siv khoom thaum ntxov los xaiv cov txheej txheem zoo thiab qhov hnyav raws li cov ntaub ntawv corrosivity hauv zos, tsis yog nruj me ntsis ua raws li ib tus qauv tab sis los ntawm kev muab kev ua tau zoo- raws li cov lus pom zoo. Qhov kev hloov pauv tau yooj yim no tau tso cai rau tus neeg cog lus los tsim cov khoom tsim muaj zog thaum peb cov khoom lag luam tau lees paub cov khoom zoo ib yam, qhov tseeb, thiab kev tiv thaiv ntim khoom (interleaving daim ntawv thiab noo noo-txheej txheem wrapping) rau kev nyab xeeb dej hiav txwv. Fasteners thiab faus cov ntsiab lus tau ua los ntawm lwm tus, tab sis peb muab cov kev taw qhia kev sib raug zoo.

Ntau lawm khiav hauv 20- hnub batch; tag nrho cov khoom xa tuaj tuaj txog 5 hnub ntxov. Tus neeg siv khoom tus neeg tsim khoom tau ua tiav peb cov coils rau hauv cov qauv mounting yam tsis muaj kev cuam tshuam cov khoom siv, txawm tias nyob rau hauv cov xuab zeb thiab cua daj cua dub. Kev saib xyuas thaum ntxov (12-24 lub hlis) pom tias qhov nruab nrab zinc poob<5 µm on sampled sections. Module degradation (0.5–0.8% annually) and capacity factors (≈25–30%) remained within warranty. Corrosion-related anomalies were significantly lower than in non-optimised reference projects, streamlining O&M.