1. Lo lus nug: Nyob rau hauv ib qho chaw muaj tshuaj lom neeg hnyav heev nrog cov tshuaj chlorides thiab acids siab, thaum twg koj yuav hloov kho los ntawm UNS S32205 mus rau UNS S32750 (Super Duplex)?
Teb:UNS S32750 tau teev tseg thaum Pitting Resistance Equivalent Number (PREN) xav tau tshaj ~ 40. Nrog siab chromium, molybdenum, thiab nitrogen cov ntsiab lus ntau dua S32205, Super Duplex muaj superior pitting thiab crevice corrosion kuj, ua rau nws tsim nyog rau qhov phem tshaj plaws offshore, tshuaj, thiab pulp & ntawv daim ntaub ntawv.
2. Nqe Lus Nug: Rau lub nkoj dej hiav txwv cua txias, yog vim li cas ASTM B443 Alloy 625 welded yeeb nkab siv dua stainless hlau?
Teb:Alloy 625 (ib tug npib tsib xee-chromium- molybdenum alloy) muaj qhov tshwj xeeb tsis kam rau pitting thiab crevice corrosion nyob rau hauv dej hiav txwv, txawm tias nyob rau hauv qhov chaw nyob ruaj khov. Nws muaj kev tiv thaiv zoo rau chloride kev nyuaj siab corrosion cracking, ib qho kev ua tsis tiav rau stainless hlau zoo li 316 nyob rau hauv marine ib puag ncig.
3. Nqe Lus Nug: Rau cov kav dej tooj liab hauv qhov kev pabcuam dej haus, yog vim li cas ASTM B88 Hom K nyuaj rau kev siv hauv av?
Teb:Hom K muaj phab ntsa tuab tshaj plaws ntawm cov qauv tooj liab (Types K, L, M). Lub "hnyav temper" muab lub zog ntau dua los tiv thaiv cov av sab nraud thauj khoom thiab kev puas tsuaj thaum lub sij hawm rov qab, thaum lub phab ntsa tuab muab kev tiv thaiv corrosion ntau dua rau ntev - kev pabcuam hauv av.
4. Nqe Lus Nug: Nyob rau hauv lub tshav kub exchanger rau seawater, vim li cas yog Titanium Qib 2 (ASTM B337) yuav luag txhua yam khoom uas nyiam?
Teb:Titanium Qib 2 tsim ib qho chaw ruaj khov, tiv thaiv oxide zaj duab xis uas ua rau nws tiv taus corrosion hauv dej hiav txwv, dej brackish, thiab dej chlorinated. Nws muaj kev tiv thaiv rau pitting thiab crevice corrosion nyob rau hauv cov cheeb tsam no thiab muaj kev yaig zoo heev - corrosion kuj, ua rau lub neej ntev heev.
5. Nqe Lus Nug: Rau lub kav dej faus, thaum twg koj yuav xaiv PE100-RC tshaj tus qauv PE100 polyethylene yeeb nkab?
Teb:PE100-RC (Resistant to Crack) muaj kev tiv thaiv zoo tshaj rau Slow Crack Growth (SCG) thiab Rapid Crack Propagation (RCP). Nws tau teev nyob rau hauv kev xav tau kev teeb tsa (piv txwv li, pob zeb struts) lossis qhov chaw thau khoom muaj kev txhawj xeeb, vim nws muab kev ruaj ntseg zoo dua tiv thaiv qhov tsis ua haujlwm ntev.
