1. Nqe Lus Nug: Rau cov kab dej chemical uas tuav ntau cov kua qaub thiab cov kuab tshuaj nyob rau hauv chav tsev kub, yog vim li cas PVDF (Polyvinylidene Fluoride) yeeb nkab tau teev dhau PP (Polypropylene)?
Teb:PVDF muaj cov tshuaj tiv thaiv dav dav dua li PP, tshwj xeeb tshaj yog tiv thaiv cov kua qaub muaj zog, aliphatic, thiab muaj ntxhiab hydrocarbons, thiab cov kuab tshuaj halogenated. Nws tseem muaj zog dua txhua yam thiab zoo dua UV tiv thaiv, ua rau nws tsim nyog rau kev ua phem thiab ntau hom tshuaj khib nyiab.
2. Lo lus nug: Vim li cas "Galvanized" ASTM A53 yeeb nkab txwv tsis pub muaj ntau lub tshuab hluav taws xob tiv thaiv hluav taws xob?
Teb:Galvanized txheej tuaj yeem flake tawm thaum lub sijhawm, muaj peev xwm ua rau txhaws lub taub hau. Qhov tseem ceeb tshaj, nyob rau hauv cov txheej txheem ntub dej, zinc txheej tuaj yeem hnov mob nrog dej, ua rau muaj qhov tshwm sim hu ua Microbiologically Influenced Corrosion (MIC), uas tuaj yeem ua rau pinhole leaks thiab system tsis ua haujlwm.
3. Lo lus nug: Rau lub siab -purity deionized dej system, yog vim li cas PFA (Perfluoroalkoxy) liner siv nyob rau hauv stainless hlau plhaub?
Teb:High- dej huv huv yog qhov hnyav heev thiab tuaj yeem tshem cov hlau ions los ntawm cov hlau tsis huv, ua rau cov dej paug. PFA liner muab ib qho inert, ultra-pure barrier, tiv thaiv ionic contamination thiab tswj cov dej resistivity. Lub plhaub stainless hlau muab lub zog txhua yam.
4. Lo lus nug: Hauv cov kav dej qaub (muaj H₂S), yog vim li cas qib API 5L, xws li X65 Sour Service yog qhov tseem ceeb?
Teb:Cov qib Sour Service muaj kev tswj cov tshuaj muaj pes tsawg leeg (piv txwv li, tsis tshua muaj zog, tswj cov pa roj carbon sib npaug) thiab txhim kho cov kev xeem (xws li, HIC thiab SSC xeem). Cov kev ntsuas no tiv thaiv Hydrogen Induced Cracking (HIC) thiab Sulfide Stress Cracking (SSC), uas yog qhov kev puas tsuaj loj rau cov qauv qib uas raug H₂S.
5. Lo lus nug: Thaum twg yog "Cast" yeeb nkab (piv txwv li, ASTM A351 CF8M) siv los hloov "Wrought" yeeb nkab (ASTM A312 TP316) rau tib lub alloy?
Teb:Cam khwb cia yeeb nkab feem ntau yog siv rau cov khoom sib xws xws li li qub, twj, thiab fittings qhov twg cov duab zoo sib xws yog yooj yim los nrum dua li tshuab los ntawm cov yeeb nkab wrought. Thaum lub hauv paus alloy zoo sib xws (CF8M yog qhov sib npaug ntawm TP316), cov khoom cam khwb cia yuav muaj cov khoom siv sib txawv me ntsis thiab lub ntsej muag rougher tiav, ua cov yeeb nkab wrought yog qhov kev xaiv zoo tshaj plaws rau cov kav dej ncaj nraim.
