Tus kheej- txheej tiv thaiv xeb yog lub hauv paus ntawm Corten Steel's corrosion resistance. Thaum lub sij hawm ntev - siv sij hawm ntev, ib puag ncig tsis raug lossis kev puas tsuaj rau cov khoom siv yuav ua rau xeb txheej tsis ua haujlwm. Kev txiav txim kom raug tsis ua hauj lwm thiab ua cov phiaj xwm kho yog qhov tseem ceeb rau kev siv lub neej ntev. Kab lus no muab cov lus qhia siv tau rau cov neeg siv khoom txawv teb chaws.
1. Yuav Ua Li Cas Txiav Txim Txheej Txheem Tsis Ua Haujlwm
Kev Pom Kev Pom Kev: Ib txwm muaj tus kheej- tiv thaiv xeb txheej yog ntom, tsis sib xws reddish-xim av ( -FeOOH). Cov paib tsis ua haujlwm muaj xws li: xim tsis sib xws (cov xim tsaus, daj daj), cov hmoov xeb xoob uas ntog yooj yim, thiab pom cov hlau substrate raug los yog pitting corrosion.
Kev sim yooj yim: ① Kev xeem daim kab xev (ASTM D3359): Cov nplaum nplaum - cov ntaub nplaum nplaum rau ntawm cov kab xeb thiab rhuav tshem sai sai - pom tseeb xeb hmoov ntawm daim kab xev qhia tias ua tsis tiav. ② Rhaub xeem: Rhaub rau saum npoo nrog ib daim ntaub qhuav; nruam xeb hmoov shedding txhais tau tias tsis zoo stability.
Corrosion Rate Saib Xyuas: Yog hais tias txhua xyoo corrosion tus nqi siab tshaj 0.03mm / xyoo (kuaj los ntawm thickness gauge), nws qhia tau hais tias cov xeb txheej yuav tsis thaiv corrosive media, ua rau kom ceev substrate corrosion.
2. Cov kev ntsuas kho zoo sib xws
Local Minor Failure (Me me -chaw xoob/peeling): ① Ntxuav qhov chaw tsis ua hauj lwm nrog cov txhuam hlau los yog cov ntawv xuab zeb kom tshem tawm cov xeb xoob thiab nthuav tawm cov substrate tshiab. ② Siv Corten Steel rust accelerator rau cheeb tsam thiab kho nws nyob rau hauv ib tug 70-85% av noo ib puag ncig rau 24-48 teev los tsim ib tug tshiab ntom rust txheej. ③ Txau cov pob tshab xeb txheej kho tus neeg saib xyuas txhawm rau txhim kho adhesion.
Loj - cheeb tsam Failure (Tshaj 10% ntawm tag nrho nto): ① Siv cov xuab zeb blasting kom tshem tawm cov txheej xeb ua tsis tiav (nto roughness Ra 3.2-6.3μm). ② Ua tag nrho cov khoom siv hluav taws xob ua kom nrawm nrawm (ua raws li cov lus qhia accelerator) los tsim cov txheej txheem tiv thaiv tus kheej tiv thaiv xeb. ③ Rau ib puag ncig hnyav (nqaij ntug dej hiav txwv, thaj chaw muaj), ntxiv silane impregnation kho kom txhim kho corrosion.
Kev Ua Phem Loj (Substrate pitting/corrosion penetration): ① Txiav tawm qhov hnyav hnyav thiab hloov lawv nrog cov ntawv tshiab Corten Steel ntawm tib qib. ② Weld nrog qis-kub- tiv taus huab cua welding cov ntaub ntawv (xws li ER50-GNiCuCr) thiab zom cov weld seam. ③ Ua kom xeb acceleration thiab kho kho ntawm qhov chaw tshiab thiab welded kom ntseeg tau tias xeb txheej txheej zoo ib yam.
3. Tshaj tawm - Kho Cov Lus Qhia Txog Kev Kho
Tom qab kho, tshuaj xyuas cov xeb txheej txhua hli rau thawj 6 lub hlis. Tsis txhob cuam tshuam cov neeg kho tshuab rau ntawm qhov chaw kho. Rau cov dej num sab nraum zoov, ntxuav lub ntsej muag txhua xyoo kom tshem tawm cov plua plav thiab cov corrosive residues, kom ntseeg tau tias cov txheej txheem xeb tau ruaj khov.
