1.What yog cov phom sij ntawm kev pleev xim ncaj qha?
Txheej xeb rhuav tshem cov nplaum ntawm txheej
Rust (tsuas yog hlau oxide) yog cov xoob xoob thiab muaj cov khoom siv tsis zoo nrog cov txheej txheem steel) thiab tsis tuaj yeem tsim cov xim xim txheej (cob qhia, xim, xim thiab lwm yam). Tom qab txheej ncaj qha, cov txheej yuav delaminated, bubbled, thiab tev tawm vim "unsound substrate", thiab yuav swb hauv lub sijhawm luv luv.
Xeb yuav txuas ntxiv mus
Rust muaj noo noo thiab electrolytes. Txawm hais tias nws tau npog los ntawm txheej, electrochemical corrosion tseem yuav muaj nyob rau hauv txheej (tsim "micro roj teeb ntawm substrate los nthuav. Nws yuav thaum kawg tau nthuav tawm sab nraud los ntawm cov txheej txheem puas (xws li khawb), ua rau tag nrho cov xim-coated phaj kom poob nws cov nyhuv tiv thaiv.
Cov tshwm sim tshwm sim ntawm txheej
Qhov tsis sib xws ntawm thaj chaw xeb yuav ua rau txheej tsis sib xws, cuam tshuam rau cov khoom lag luam zoo nkauj nrog cov khoom muaj txiaj ntsig zoo xws li cov khoom siv hauv tsev thiab tsev.
2.Yog li cas cov qauv kev kho sib txawv rau cov qib sib txawv ntawm xeb?
Kev sib tsoo me me (NTIAV RIGH): Txhua tus pom xeb thiab cov khoom siv hlau (xws li cov suab paj nruag, xaim hluav taws xob (xws li sandrochlore acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, posphoric acid, phosphoric acid, phosphoric acid, posphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, phosphoric acid, posphoric acid, phosflasting kom ua rau cov hlau ntshiab.
Kev xeb (xeb tob dua> 0.1mm lossis pitting): nws yog ib qho tsim nyog los ntsuas seb puas yuav tsum tau ntsuas seb puas poob qis yog nyob hauv cov lus pub rau tag nrho. Yog hais tias tus xeb tau ua rau lub substrate los ua thinner, perforated, lossis tsim cov pits tsis tuaj yeem muab tshem tawm raws li xim txheej av substrate thiab xav tau kom raug kaw.
3.Qhov ua kom ua kom muaj kev ua kom zoo thiab kev kho mob passivation?
Tom qab Rust tshem tawm, qhov saum npoo ntawm cov substrate yuav tsum tau ua kom tiav, xws li chemetual passivation, xws li chromual oxide zaj duab xis thiab tom qab ntawd cov txheej txheem sib tw thiab tom qab ua rau muaj kev xeb.
4.How kho cov txheej txheem doorate?
Yog tias muaj me ntsis pits rau saum npoo av tom qab tshem tawm cov primer (xws li Epoxy Primer) kom ntseeg tau tias lub chaw ua si sab nrauv yog tiaj tus thiab muab cov khoom nplaum tsis zoo rau cov xim xim.
5.Txoj kev kho mob rau cov xeb tsis muaj xeb?
Rau cov substrates nrog tsuas yog ib qho me me ntawm cov nplaim dej ntawm ntug lossis ib feem (xws li cov khoom siv nruj (xws li cov khoom siv nruj (xws li cov khoom siv nruj (xws li cov khoom siv nruj (xws li cov ntaub ntawv sib tsoo ib ntus), tab sis ob qho xwm txheej yuav tsum tau ntsib:
Cov xeb xeb uas xeb rau tsawg dua 5%, thiab tsis muaj qhov pitting;
Tom qab kev kho, qhov tuab me nyuam tuab yuav tsum tau nce ntxiv (xws li cov yeeb yaj kiab qhuav ntau dua los yog sib npaug rau kev tiv thaiv kev tiv thaiv kev tiv thaiv.
Txawm li cas los xij, kev pabcuam lub neej ntawm cov khoom lag luam zoo li no yog ntau dua li ntawm cov xim ib txwm muaj xim, thiab nws tsis pom zoo kom ntev sab nraum zoov lossis qib siab corrosion.