Hydrochloric acid: Feem ntau cov ntaub ntawv hlau, suav nrog ntau yam khoom siv hlau tsis muaj zog, tsis tiv taus hydrochloric acid corrosion, thiab siab silicon ferrosilicon tsuas yog siv rau 30% hydrochloric acid hauv qab 50 degree. Contrary to hlau cov ntaub ntawv, feem ntau cov ntaub ntawv uas tsis yog-hlau muaj corrosion kuj zoo rau hydrochloric acid, yog li roj hmab lined li qub (xws li fluoroplastics) yog qhov zoo tshaj plaws kev xaiv rau thauj hydrochloric acid. Txawm li cas los xij, yog tias qhov nruab nrab kub siab tshaj 150 degree lossis siab tshaj 16 kilograms, txhua yam yas (xws li chloroplastics lossis txawm tias polytetraethylene) yuav nyuaj. Hydrochloric acid uas dhau qhov mob no tsis muaj nyob hauv khw.
Yuav ua li cas xaiv cov khoom tiv thaiv corrosion thaum muaj qhov zoo tagnrho valve?
Sulfuric acid: Raws li ib qho ntawm cov xov xwm corrosive heev, sulfuric acid yog ib qho tseem ceeb ntawm cov khoom siv raw nrog ntau yam kev siv. Lub corrosion ntawm cov ntaub ntawv sib txawv heev nrog txawv concentrations thiab kub ntawm sulfuric acid. Rau cov concentrated sulfuric acid nrog ib tug concentration ntau dua 80% thiab kub tsawg tshaj li 80 degree, carbon steel thiab cam khwb cia hlau muaj zoo corrosion kuj, tab sis tsis haum rau high-ceev ntws sulfuric acid, tsis haum rau valve cov ntaub ntawv, zoo tib yam stainless hlau. xws li 304 thiab 316 kuj muaj kev txwv rau kev siv sulfuric acid media. Yog li ntawd, lub twj tso kua mis rau kev thauj cov sulfuric acid feem ntau yog ua los ntawm cov silicon cam khwb cia hlau (nrog siab nyuaj hauv kev casting thiab ua), siab alloy stainless hlau (No. 20 alloy valve), fluoroplastics, thiab lwm yam, uas muaj sulfuric acid kuj zoo. Yog tias qhov siab siab dhau lawm thiab qhov kub thiab txias nce, qhov kev siv ntawm cov yas li qub yuav raug cuam tshuam, yog li tsuas yog cov pob ceramic uas kim dua tuaj yeem xaiv.
