1. Q: Dab tsi ua rau graphitization hauv carbon steel kav?
A: Ntev -lub sij hawm raug kub siab (siab dua 800℃F / 427 degree) tuaj yeem ua rau cov pa roj carbon cais raws li graphite, ua rau cov yeeb nkab tsis muaj zog.
2. Q: Dab tsi yog qhov tseem ceeb ntawm kev txhawj xeeb txog kev faus carbon steel yeeb nkab?
A: Electrochemical corrosion. Nws tau txo qis siv cov txheej tiv thaiv (xws li FBE - Fusion Bonded Epoxy) thiab cov kab ke tiv thaiv cathodic.
3. Q: Dab tsi yog "kev pabcuam qaub" yeeb nkab?
A: Cov yeeb nkab tsim nrog tshwj xeeb steel chemistry thiab ua tiav (ib cov qauv zoo li ISO 15156) los tiv thaiv Hydrogen Induced Cracking (HIC) thiab Sulfide Stress Cracking (SSC) nyob rau hauv ib puag ncig uas muaj H2S.
4. Q: Vim li cas carbon steel yeeb nkab tsis haum rau cov tshuaj corrosive heev?
A: Cov hlau matrix reacts nkag tau nrog cov kua qaub, oxidizers, thiab lwm yam khoom, ua rau kom nrawm nrawm los yog pitting corrosion. Stainless hlau los yog hlau kav yog siv los hloov.
5. Q: Dab tsi yog "txiv mis" hauv cov kav dej?
A: Qhov ntev ntawm cov yeeb nkab, feem ntau yog threaded ntawm ob qho kawg, siv rau kev sib txuas.
