Ntau yam cuam tshuam ncaj qhaseb lub patina yuav ruaj khov, zoo ib yam, thiab tiv thaivntawm SPA-C sab nraum zoov kos npe. Vim SPA-C yog ib qhonkag-theem huab cua steel (tsis muaj nickel, qis alloy), nws patina yog deb tshaj rhiab heev rau ib puag ncig thiab kev teeb tsa dua li qib siab huab cua steels.
1. Huab cua ib puag ncig
Nroog / industrial cuaMuaj cov SO₂ nruab nrab, plua plav, thiab cov pa phem → pab tsim patina, ruaj khov dua.
Huab cua huv nyob deb nroogslows patina maturation; txheej tseem thinner thiab tsis ruaj khov.
Ntug hiav txwv / ntsev tsuag ib puag ncigChloride ions puas tsuaj rau txheej tiv thaiv → patina nyob twj ywm xoob, tsis ruaj khov, thiab nquag ntws tawm.
2. Humidity & ntub-qhuav voj voog
Nquag ntub-qhuav voj voog (los nag + hnub)Zoo tagnrho rau ruaj khov patina.
Long-term high humidity / persistent dampPatina nyob twj ywm ntxeem tau, hmoov, thiab tsis tuaj yeem ruaj khov.
Sawv ntsug dej los yog dej tsis zooUa rau lub zos over-corrosion, xim tsis sib xws, thiab thaj ua rau thaj tsis ruaj khov.
3. Hnub ci & qhov cua
Hnub ci tsis txaus / ntxoov ntxoo tobTxuas lub sijhawm ruaj khov; patina tseem mos thiab tsis sib xws.
Qhov cua tsis zoo / daig noo nooTiv thaiv oxidation los ntawm kev ua haujlwm ib txwm → tsis ruaj khov.
4. Deg mob & fabrication
Smooth zeb tiavSlows xeb nucleation; patina daim ntawv tsis sib xws.
Roj, roj, lossis cov khoom paug tawm ntawm qhov chawBlocks oxidation → patchy, tsis ruaj tsis khov patina.
Qhov tsis sib xws ntawm qhov roughnessUa rau cov xim tsis sib xws thiab qhov ntom ntom.
5. Kev teeb tsa txoj haujlwm
nthuav tawm tag nrho: zoo tshaj plaws rau ruaj khov patina.
Hauv qab eaves / sheltered: qeeb heev, qaug zog, tsis ruaj khov patina.
Sib cuag nrog av, pob zeb, lossis ntoo:Traps noo noo → hauv zos corrosion, tsis ruaj tsis khov patina.
6. Kev tu & txheej
Kev ntxhua khaub ncaws ntau zaus / kev kub siab tuTshem tawm cov txheej txheem patina → yeej tsis stabilizes.
Cov txheej tsis sib xws lossis cov sealers tau siv ntxov dhauInterrupts oxidation → tsis ruaj khov txheej hauv qab.
