Ua rau corrosion ntawm hlau crevices

Hlau hloov tau yooj yim thiab elongation yog qhov zoo, tuaj yeem tiv taus lub siab ntawm kev siv tshuab, hauv peb lub teb chaws kev lag luam tau ua lub luag haujlwm tseem ceeb heev.Muaj ntau ntau hom hlau hlau, feem ntau yog muab cov hlau hlau dub,galvanized hlau hlau.Qhov kev tiv thaiv corrosion ntawm txheej txheej yog zoo dua qub, tab sis qhov tshwm sim ntawm crevice corrosion yuav pom tom qab siv mus ntev.

Crevice corrosion yog ib yam ntawm corrosion nyob rau hauv me me cheeb tsam, tshwj xeeb tshaj yog nyob rau hauv qhov chaw zais, uas muaj peev xwm tsim vicious corrosion voj voog.Yuav luag tag nrho cov crevice corrosion tuaj yeem tshwm sim hauv cov hlau alloy, nrog cov roj uas muaj anionic nruab nrab nruab nrab Z yog ib qho yooj yim ua rau crevice corrosion, crevice corrosion feem ntau tshwm sim nyob rau hauv lub aperture ntawm 0.025 mus rau 0.1 hli, vim lub sij hawm ntev sib sau ua ke, cov kab nrib pleb yuav tshwm sim. ib tug series ntawm impurities, ua ke nrog rau sab nraud ib puag ncig ntawm damp yooj yim corrode cheeb tsam ntawm qhov sib txawv yog me me.
Lub sij hawm ntev raug rau tej impurities yuav ua rau kev hloov pauv thiab qhov sib txawv corrosion.Txoj kev daws teeb meem ncaj qha rau qhov tshwm sim no yog txhawm rau ntxiv dag zog rau txheej txheej ntawm cov khoom kom tsis txhob muaj corrosion.Txhim kho qhov zoo ntawm galvanized hlau hlau, tuaj yeem siv cov hlau uas tau plated zinc ua ntej rub tawm thaum ua galvanizedhlau hlau, yuav tsis tshwm sim qhov tshwm sim ntawm cov khoom tsis zoo.Lub toughness ntawm cov hlau yog 15 mus rau 25 feem pua ​​​​siab dua li ntawm cov kos thiab galvanized hlau, thiab qee zaum muaj zog me ntsis ntawm cov hlau polished.
Cov hlau tom qab thawj plating, nws lub zog txwv kuj tseem siab dua thawj plating, plated zinc thiab tom qab ntawd ua los ntawm cov hlau tsis tsuas yog toughness thiab siab zog.Muaj ib daim duab qis dua hauv lub zog txwv ntawm galvanized hlau hlau vim qhov zoo ntawm zinc, vim lub zog ntawm zinc thev naus laus zis yog ob peb zaug me dua cov hlau nws tus kheej.Nws yog ib qho nyuaj rau kub-dip galvanize kos cov xov hlau, thiab nws yog tsis yooj yim sua rau finer thiab zoo heev nyob ntawm tej yuav coated nrog lub siab xav thickness ntawm du zinc.