09CrCuSb (ND steel)yog ib qho qis- alloy corrosion-cov hlau tsis muaj zog tsim los tsim cov hlau tsis muaj seamless siv nyob rau hauv sulfur- muaj cov corrosive ib puag ncig.
Los ntawm kev ntxiv cov ntsiab lus alloying xws li chromium, tooj liab, thiab antimony rau carbon steel, ND steel ho txhim khu kev tiv thaiv rau sulfur corrosion thiab siab - kub flue gas nres, zoo txuas lub neej kev pab cuam ntawm cov cuab yeej.
Cov khoom siv no yog siv dav hauv cov chaw tsim hluav taws xob thiab cov roj refineries, tshwj xeeb tshaj yog nyob rau hauv cov khoom siv uas ua haujlwm rau lub sijhawm ntev hauv qhov kub thiab txias thiab corrosive gas.
Cov ntawv thov ib txwm muaj xws li cov khoom siv hluav taws xob, cua preheaters, cov khoom siv hluav taws xob sib hloov, thiab cov evaporators, qhov twg muaj zog tiv thaiv sulfur- cov roj nplua nuj flue yog qhov tseem ceeb rau kev ua haujlwm ruaj khov.
Mechanical Properties ntawm ND Steel (09CrCuSb)
| Khoom | Tus nqi |
|---|---|
| Tensile zog | 390-550 MPa |
| Yield zog | Ntau dua lossis sib npaug li 245 MPa |
| Elongation | Ntau dua lossis sib npaug li 25% |
Chemical Composition ntawm ND Steel (09CrCuSb)
| Element | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.10 |
| Silicon (Si) | 0.20 – 0.40 |
| Manganese (Mn) | 0.35 – 0.65 |
| Chromium (Cr) | 0.70 – 1.20 |
| Copper (Cu) | 0.25 – 0.45 |
| Antimony (Sb) | Tsawg dua lossis sib npaug li 0.10 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.10 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.10 |
09CrCuSb (ND steel) feem ntau suav hais tias yog qhov sib npaug ntawm cov huab cua los yog Corten steel nyob rau hauv cov nqe lus ntawm corrosion kuj. Nyob rau hauv ib puag ncig sulfur corrosion, nws cov kev ua tau zoo tshwj xeeb tshaj yog piv nrog cov pa roj carbon zoo tib yam, ua rau nws muaj kev ntseeg siab rau kev xav tau kev lag luam.
Raws li huab cua huab cua- hom qis- hlau alloy, ND steel tsim ib txheej tuab thiab ruaj khov tiv thaiv oxide txheej ntawm nws qhov chaw thaum raug huab cua. Cov txheej txheem tiv thaiv ntuj no ua rau qeeb ntxiv corrosion thiab tiv thaiv kom tsis txhob hlau sai, ua kom ntev - lub sij hawm kev ncaj ncees thiab txhim kho kev nyab xeeb.
Ntxiv rau nws cov kev tiv thaiv corrosion zoo heev, 09CrCuSb steel muaj lub zog zoo txhua yam thiab ductility. Qhov kev sib npaug ntawm cov khoom no tso cai rau cov khoom siv los tiv thaiv cov khoom siv thaum tuav cov formability thiab weldability, ua rau nws zoo haum rau seamless raj ntau lawm thiab industrial fabrication.
Los ntawm kev xav txog kev lag luam, ND steel tsis tas yuav tsum tau pleev xim ntxiv lossis tiv thaiv- txheej txheej corrosion. Nws tus kheej- tiv thaiv qhov chaw txo qis kev saib xyuas thiab kho tus nqi thoob plaws tag nrho lub neej kev pabcuam, muab cov txiaj ntsig zoo dua piv nrog cov pa roj carbon steel.
Ib puag ncig, 09CrCuSb (ND steel) txhawb nqa cov hom phiaj kev txhim kho kom ruaj khov. Los ntawm kev txo qis qhov xav tau ntawm cov tshuaj coatings thiab kev saib xyuas tsis tu ncua, nws txo qhov cuam tshuam ib puag ncig thaum txhim kho lub sijhawm ntev - kev ua haujlwm ntawm cov tshuab ua haujlwm.
Zuag qhia tag nrho, 09CrCuSb (ND steel) yog siab -kev ua haujlwm corrosion- cov khoom siv tiv taus tsim los rau siab - kub thiab sulfur- muaj ib puag ncig. Nws yog qhov kev xaiv zoo tshaj plaws rau kev tsim hluav taws xob thiab kev siv petrochemical, muab kev ruaj khov, kev ntseeg siab, thiab kev lag luam zoo tshaj li cov pa roj carbon zoo tib yam.
09CrCuSb steel yog dab tsi?
09CrCuSb, tseem hu ua ND steel, yog ib qho qis - alloy corrosion- cov hlau tsis muaj zog tshwj xeeb uas tsim los siv rau hauv cov kua qaub dew point corrosion ib puag ncig. Nws muaj cov ntsiab lus alloying xws li chromium (Cr), tooj liab (Cu), thiab antimony (Sb), uas ua rau nws muaj zog tiv thaiv sulfuric acid thiab flue gas corrosion.
Vim li cas 09CrCuSb hu ua ND steel?
"ND" sawv rauNitric acid thiab Dew -point corrosion kuj. Cov hlau tau tsim los tiv thaiv qis -kub acid condensation corrosion feem ntau pom nyob rau hauv boilers, heat exchangers, thiab flue gas systems.
Puas yog 09CrCuSb steel muaj qhov zoo weldability?
Yog lawm. 09CrCuSb steel muaj qhov zoo weldability. Cov txheej txheem vuam txheej txheem xws li SMAW, SAW, thiab TIG tuaj yeem siv tau, tab sis qis - hydrogen electrodes thiab preheating kom zoo yuav raug pom zoo rau cov ntu tuab.
Puas yog 09CrCuSb haum rau siab -kev pabcuam kub?
09CrCuSb yog tsim los rau nruab nrab - qhov kub thiab txias qhov chaw uas acid dew point corrosion tshwm sim. Nws tsis yog npaj rau siab heev - qhov kub siab ntawm lub nkoj siv yam tsis muaj kev ntsuam xyuas zoo.
