Lub hauv paus ntsiab lus rau Corrosion Resistance
Kev huv ntawm qhov chaw: Tsis muaj cov nplai zeb, roj, av lossis cov kab mob uas cuam tshuam cov dej noo / corrosive ions (piv txwv li, chlorides hauv thaj chaw ntug dej hiav txwv).
Micro- ntxhib ntxhib ntxhib: Ib qho ntxeem tau, tsis sib xws uas tso cai rau nruj adhesion ntawm hlau -alloy oxide patina (Cu/Cr/Ni nyob rau hauv cov hlau) thiab tiv thaiv patina los ntawm tev / flaking.
1. SA2.5 / SA3 Sandblasted tiav -Qhov zoo tshaj plaws Corrosion Resistance (Inland + ntug dej hiav txwv)
Cov yam ntxwv saum npoo: Ultra- huv si (95%+ nplai / xeb / roj tshem tawm), tsis tu ncua micro- ntxhib ntxhib ntxhib ntxhib ntxoo (Ra 3.0–5.0 μm), qhib qhov ntxeem tau rau oxide bonding.
Corrosion kev ua haujlwm:
Pib: Tsawg flash xeb; Qhov chaw huv si tsis txhob muaj kev cuam tshuam hauv cheeb tsam los ntawm cov khoom paug.
Ntev -lub sij hawm: Covnkaus xwbthat enables a dense, tightly bonded protective patina-even in coastal high-salt environments. Patina cov ntaub ntawv sai sai (nrog acceleration) thiab txo tus nqi corrosion ntawm 60-70% vs. pitting / crevice corrosion yog minimized.
Ntsiab lus: Tus qauv kub rau corrosion kuj nyob rau hauv tag nrho cov hnyav ib puag ncig.
2. Hlau -Brushed Finish -Zoo Corrosion Resistance (Mild Inland nkaus xwb)
Cov yam ntxwv saum npoo: Lightly textured (Ra 1.5–3.0 μm), tshem tawm cov nplais / av tab sis khaws cov txheej nyias, nruj hauv paus oxide; kev huv huv nruab nrab.
Corrosion kev ua haujlwm:
Pib: qeeb, teeb pom kev zoo xeb; tsis muaj qhov nrawm nrawm hauv qab - nplai corrosion (tsis zoo li zeb nplai).
Ntev -lub sij hawm: Tsim ib lub patchy tab sis ib nrab - tuab tiv thaiv patina hauvme me hauv av, huv si ib puag ncig(tseem humidity, tsis muaj ntsev / kuab paug). Kev tiv thaiv corrosion yog qis dua nyob rau hauv ntug dej hiav txwv / siab- thaj chaw vaum- ntsev ions nkag mus rau cov txheej txheem oxide uas tsis muaj zog, ua rau qeeb pitting corrosion.
Ntsiab lus: Tus nqi -kev txhim kho zoo los ntawm cov nplai zeb rau hauv av tsis yog- cov ntawv thov tseem ceeb.
3. Pickled & Oiled (P&O) Ua tiav -Tsis zoo Corrosion Resistance (Tag nrho ib puag ncig, tsis kho)
Cov yam ntxwv saum npoo: Smooth (Ra 0.8–1.5 μm), nplai -dawb tab sis coated nrog nyias xeb-inhibiting roj; Tsawg nto roughness, tsis muaj kev ntxhib los mos rau oxide adhesion.
Corrosion kev ua haujlwm:
Pib: Roj zaj duab xis muabib ntus luv- tiv thaiv lub sijhawm(2-4 lub lis piam) tawm tsam flash xeb; tsis muaj corrosion kom txog thaum cov roj degrades (UV / ntsev tsuag / los nag).
Ntev -lub sij hawm: Ua kom nrawm nrawm nrawm thaum cov roj ploj mus. Qhov chaw du blocks patina adhesion-tsuas yog xoob, flaky xeb cov ntaub ntawv, uas ntxiab ya raws / corrosive ions. Qhov hnyav pitting corrosion tsim nyob rau hauv 6-12 lub hlis nyob rau hauv ntug dej hiav txwv / siab-cov av noo; tsis muaj kev tiv thaiv patina puas tau tsim (tsis kho).
Ntsiab lus: Corrosion kuj txhim kho tsuas yog tias cov roj raug tshem tawm tag nrho thiab qhov chaw yog textured (xws li sandblasted) rau patina tsim.
4. Kub- Rolled Mill Scale Finish -Tsis zoo Corrosion Resistance (Tag nrho ib puag ncig)
Cov yam ntxwv saum npoo: Unprocessed, npog hauv tuab, brittle zeb nplai; irregular ntxhib ntxhib los mos, embedded av / roj, xoob nplai flakes.
Corrosion kev ua haujlwm:
Pib: Kev xeb sai heev- zeb nplai delaminates li ntawm 1-2 lub lis piam hauv qhov chaw ntub dej / ntug dej hiav txwv, nthuav tawm cov hlau tshiab rau random oxidation. Chloride / ntsev ions ntxiab ntawm nplai thiab hlau, ua rauhauv qab - nplai pitting corrosion(Qhov feem ntau puas tsuaj ntawm corrosion rau ASTM A242).
Ntev -lub sij hawm: Kev puas tsuaj, tsis muaj kev tiv thaiv corrosion; tsis muaj patina tsim tau. Sib sib zog nqus pitting, tev xeb thiab degradation nto tshwm sim nyob rau hauv 3-6 lub hlis nyob rau hauv ntug dej hiav txwv / siab-cov av noo; structural integrity muaj kev pheej hmoo rau kev thauj khoom -cov kabmob.
Ntsiab lus: Lub default zeb tiav muajtsis muaj ntsiab lus corrosion kuj-pre-kev kho mob (blasting/wire txhuam) yog qhov yuav tsum tau siv rau sab nraum zoov.
5. Av / Polished tiav -Qhov phem tshaj Corrosion Resistance (Tag nrho ib puag ncig)
Cov yam ntxwv saum npoo: Tsis tshua muaj neeg du (Ra 0.2-0.8 μm), precision -machined, tsis muaj micro- textures rau oxide bonding; siab huv tab sis nyob ze -zero deg cheeb tsam rau patina tsim.
Corrosion kev ua haujlwm:
Pib: Nqus, tsis sib xws nto xeb (qhov chaw qis qis qeeb oxidation), tab sis tsis muaj oxide ntom ntom.
Ntev -lub sij hawm: Ib daim nyias nyias, uas tsis yog - cov ntaub ntawv ntawm cov txiv kab ntxwv xeb xeb thiab txuas ntxiv ntxuav tawm los ntawm nag / ntsev tsuag. Tsis muaj kev tiv thaiv patina puas tau tsim - steel nto corrodes uniformly thiab dulls lub sij hawm, nrog gradual thickness poob. Corrosion npaum li cas qis dua zeb nplai tab sis deb dua li sandblasted / hlau- txhuam tiav; pitting corrosion tseem tsim nyob rau hauv cov ntug dej hiav txwv.
