1. Tshuaj lom neeg xeb
(1) Cov paug tsis huv: Cov roj, hmoov av, kua qaub, alkali, thiab ntsev uas txuas rau saum npoo ntawm qhov chaw ua haujlwm tau hloov pauv mus ua kev txhim kho xov xwm hauv qee yam kev mob, thiab cov tshuaj lom neeg ua haujlwm nrog qee yam hauv cov ntu ntawm cov hlau, ua rau muaj tshuaj lom neeg xeb thiab xeb. Kev txiav txim siab zoo ntawm stainless hlau saum npoo kev kho mob
(2) Kev khawb tawm sab nraud: Txhua hom khawb ua rau lub qhov zaj duab xis passivation, uas txo qhov muaj peev xwm tiv thaiv ntawm cov hlau tsis huv, thiab nws yooj yim rau cov tshuaj tiv thaiv nrog cov ntaub ntawv tshuaj, ua rau muaj tshuaj lom neeg xeb thiab xeb.
(3) Kev tu kom huv: Tom qab pickling thiab passivation, cov kua uas seem yuav nyob thiab cov hlau tsis huv yuav raug xeb ncaj qha (tshuaj xeb) yog tias qhov tu tsis huv.
2. Kev xeb hluav taws xob
(1) Cov pa phem carbon hlau: khawb thiab xov xwm tawm los ntawm kev sib cuag nrog carbon hlau qhov chaw ua cov galvanic hlwb thiab ua rau cov tshuaj electrochemical xeb.
(2) Kev Txiav: Cov nplaum ntawm cov khoom xeb-cuam tshuam xws li txiav slag, txaws thiab corrosive nruab nrab tsim cov ntawv galvanic ntawm tes thiab tsim hluav taws xob xeb.
(3) Kev ci: Cov muaj pes tsawg leeg thiab cov qauv ntawm cov nplaim hluav taws cua kub hloov chaw tsis sib xws, thiab tsim ib txoj kab ntawm galvanic nrog qhov nruab nrab tsis muaj corrosive, uas ua rau electrochemical xeb.
(4) Vuam: lub cev tsis zoo (hauv qab, qhov hws, tawg, tsis muaj fusion, nkag mus tsis txaus, thiab lwm yam) thiab cov tshuaj tsis xws luag (cov nplej loj, chromium depletion ntawm lis ciam, cais tawm, thiab lwm yam) hauv qhov chaw vuam thiab cov xov xwm corrosive yog tshwm sim los ntawm kev tsim ntawm galvanic hlwb Electrochemical corrosion.
(5) Cov khoom siv: Cov khoom siv tshuaj lom neeg (muaj pes tsawg leeg tsis sib haum, S, P tsis huv, thiab lwm yam) thiab cov khoom siv lub cev tsis zoo (xoob, blisters, kab nrib pleb, thiab lwm yam) ntawm cov khoom siv steel hlau yog qhov zoo rau kev tsim cov galvanic hlwb nrog corrosive media thiab ua rau electrochemical xeb.
(6) Passivation: tsis zoo pickling thiab passivation ua rau tsis ncaj los yog nyias zaj duab xis passivation nyob rau saum npoo ntawm stainless hlau, uas yog nquag ua rau electrochemical corrosion.
(7) Kev Tu Kom Huv: Cov dej pickling passivation qhov seem thiab cov tshuaj lom neeg cov khoom lag luam ntawm cov hlau tsis huv yuav ua rau cov xaim hluav taws xob nrog cov khoom tsis muaj steel.
Kev nqus ntawm kev quab yuam yog yooj yim los ua kom muaj kev ntxhov siab. Nyob rau hauv luv luv, vim nws tshwj xeeb nws yog xim hlau qauv thiab nto passivation zaj duab xis, stainless hlau feem ntau nyuaj rau tshuaj lom neeg nrog nruab nrab thiab yuav ua rau corroded, tab sis nws tsis yooj yim sua kom xeb ntawm ib qho xwm txheej. Cov. Nyob rau ntawm qhov xov xwm corrosive thiab kev txhawb zog (xws li khawb, txaws, txiav pob, thiab lwm yam), cov hlau tsis xeb tuaj yeem kho tau qeeb los ntawm tshuaj lom neeg thiab hluav taws xob nrog rau cov ntawv tshaj tawm, thiab qhov xeb tau ceev heev nyob rau qee yam. Xeb tshwm sim, tshwj xeeb tshaj yog pitting thiab crevice corrosion. Qhov kev txhim kho corrosion ntawm stainless hlau qhov chaw yog feem ntau electrochemical xeb. Yog li no, txhua txoj kev tiv thaiv zoo yuav tsum tau ua thaum lub sijhawm ua cov khoom tsis muaj steel hlau txhawm rau sim ua kom tsis txhob xeb cov neeg mob thiab kev ntxias. Qhov tseeb, muaj ntau yam xeb thiab qhov kev ntxias (xws li khawb, txaws, txiav pob, thiab lwm yam) tseem muaj qhov cuam tshuam zoo rau qhov tshwm sim ntawm cov khoom, thiab lawv yuav tsum thiab yuav tsum kov yeej.