ISO 9227 tus qauv yog rau kev ntsuam xyuas Corrosion nyob rau hauv cov khoom cua atmospheres Ntsev tsuag kev kuaj ntawm hydraulic fittings deg finish.
Qhov ISO 9227 International Standard qhia cov khoom siv, cov tshuaj reagents thiab cov txheej txheem uas yuav tsum tau siv rau hauv kev siv cov tshuaj ntsev tsis muaj ntsev (NSS), tshuaj acetic acid ntsev tsuag (AASS) thiab kuaj cov tshuaj acetic acid ntsev tshuaj (CASS) txhuam kev ua haujlwm ntawm cov khoom siv hlau, nrog los yog tsis muaj kev tiv thaiv ruaj khov los yog ib ntus kev tiv thaiv.
Qhov kev sim tshuaj tua ntsev tsis zoo siv rau:
Cov hlau thiab lawv cov hlau;
Cov coatings coatings (anodic thiab cathodic);
- Kev hloov pauv hloov;
Kev muaj zog anodic oxide;
Cov organic coatings ntawm cov khoom siv hlau.
Cov acetic acid ntsev tsuag tshuaj tsuag yog tshwj xeeb tshaj yog pab rau kev kuaj hniav coatings ntawm
tooj liab + npib roj hmab + chromium, los yog npib tsib xees + chromium. Nws kuj tau pom tias tsim nyog kuaj cov anodic coatings ntawm txhuas.
Cov tshuaj tua kab ua kom muaj acetic acid ntsev siv tshuaj tua kab yog qhov tseem ceeb rau kev kuaj hniav coatings ntawm
tooj liab + npib roj hmab + chromium, los yog npib tsib xees + chromium. Nws kuj tau pom tias tsim nyog kuaj cov anodic coatings ntawm txhuas.
Cov tshuaj tua ntsev yog txhua yam tsim nyog los kuaj xyuas tias qhov sib piv ntawm cov khoom siv hlau, uas muaj los yog tsis muaj kev tiv thaiv kev txhawj xeeb, yog tswj tau. Lawv tsis npaj siv rau kev sib piv kev sib piv, los qhia cov ntaub ntawv sib txawv ntawm ib leeg nrog rau kev tiv thaiv kev qias neeg.
