EN 10216-5 npog dab tsi
EN 10216 yog tus qauv European rau seamless steel raj rau lub hom phiaj siab, muab tso rau hauv qhov chaw los ntawm hom hlau. Ntu 5 npog stainless hlau raj thiab teeb tsa cov txheej txheem xa khoom: qib steel thiab lawv cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom xa tuaj, cov khoom siv kho tshuab ntawm chav tsev thiab qhov kub siab, kev kam rau siab ntawm qhov ntev thiab qhov loj, thiab cov qeb xeem uas txiav txim siab seb cov raj puas tau kuaj ua ntej xa khoom. Cov raj xa mus rau EN 10216-5 yog seamless, yog li tsis muaj qhov txuas txuas ntev thiab tsis muaj kev soj ntsuam xyuas qhov sib txuas.
Tus neeg yuav khoom qhia txog sab nraud txoj kab uas hla thiab phab ntsa thickness, tus me nyuam tus mob, thiab xeem qeb. Cov qeb xeem txiav txim siab seb qhov kev ntsuam xyuas tsis yog -kev puas tsuaj uas xav tau los ntawm tus qauv yog siv rau ntawm ib qho - raj lossis ntau lub hauv paus, ua ke nrog cov xau- kev ntsuas nruj. Kev qhia cov qeb kom raug nyob rau theem nug kom zam ob qho tib si tsis tsim nyog tus nqi thiab hauv qab -cov khoom xa tuaj.
Qib 1.4401 thiab nws qhov sib npaug
1.4401 yog tus lej hlau rau X5CrNiMo17-12-2, tus qauv molybdenum-cov kabmob austenitic stainless hlau. Nws yog European sib npaug ntawm UNS S31600 thiab ntawm TP316 qib ntawm ASTM A312 thiab ASTM A269 rau cov yeeb nkab thiab raj, thiab nws kuj tau them raws li daim ntawv thiab phaj qib los ntawm EN 10088-1 thiab ASTM A240.
| Element | EN 10088-1 / EN 10216-5, % | ASTM A240 TP 316% |
|---|---|---|
| Cov pa roj carbon | 0.07 max | 0.08 max |
| Silicon | max 1.00 Nws | 0.75 max |
| Manganese | max 2.00 Nws | max 2.00 Nws |
| Phosphorus | 0.045 max | 0.045 max |
| Sulfur | 0.030 max | 0.030 max |
| Chromium | 16.5–18.5 | 16.0–18.0 |
| Nickel | 10.0–13.0 | 10.0–14.0 |
| Molybdenum | 2.00–2.50 | 2.00–3.00 |
| Nitrogen | 0.10 max | – |
Cov ntsiab lus chromium tsim cov zaj duab xis passive oxide uas ua rau cov hlau tsis muaj steel, cov nickel stabilizes cov qauv austenitic thiab muab ductility thiab toughness ntawm qhov kub thiab txias, thiab molybdenum yog tam sim no tshwj xeeb los txhim kho kev tiv thaiv pitting thiab crevice nres hauv chloride ib puag ncig. Ntawm cov qauv pitting li niaj zaus, Cr + 3.3 Mo + 16 N, qib muab tus nqi hauv cheeb tsam ntawm 24 txog 25, uas yog ib qho txiaj ntsig zoo tshaj qhov molybdenum- qib 1.4301 dawb.
Mechanical Behavior thiab Temperature Limits
Cov raj feem ntau muab nkag rau hauv cov tshuaj annealed mob. Nyob rau hauv tas li ntawd, lub chav tsev kub yuav tsum yog tsawg kawg yog 0.2% pov thawj lub zog ntawm txog 200 MPa thiab ib tug tensile lub zog nyob rau hauv cheeb tsam ntawm 500 mus rau 700 MPa nrog ib tug elongation ntawm 35% los yog zoo dua, qhov tseem ceeb uas yog tabulated ua ke nrog lub siab kub pov thawj lub zog nyob rau hauv tus qauv. Vim tias cov qauv austenitic tsis nyob ntawm qhov quench - thiab - temper microstructure, qib tsis ua nkig ntawm qhov kub thiab txias thiab khaws cia muaj txiaj ntsig zoo rau qib cryogenic, uas ua rau nws yog ib tus neeg sib tw rau kev pabcuam txias thiab kev pabcuam kub.
Thaum kub kub cov khoom khaws cia zoo zog thiab oxidation kuj. Rau kev nruam lossis sib cuam tshuam siab - qhov kev pabcuam kub qhov kev txwv oxidation feem ntau yog hais nyob ib ncig ntawm 870℃rau kev cuam tshuam tsis sib xws, thaum qhov kev tso cai tsim kev ntxhov siab rau kev pabcuam siab raug coj los ntawm qhov ntsuas kub siab tau muab rau hauv tus qauv es tsis yog los ntawm oxidation txwv. Ntev - lub sij hawm raug nyob rau hauv lub sensitizing ntau yam yuav tsum tau zam rau welded Cheebtsam tshwj tsis yog ib tug stabilized los yog tsawg- qib carbon yog siv.
Daim ntawv thov
Chemical thiab petrochemical nroj tsuag:txheej txheem piping, reactors thiab tshav kub exchangers tuav cov kua qaub, kuab tshuaj thiab lwm yam corrosive kua.
Roj thiab roj:Cov kab khiav, cov kab txhaj tshuaj thiab cov kev pabcuam siv hluav taws xob, suav nrog cov chaw sab nrauv uas muaj cov tshuaj chloride pitting tsis kam yog qhov tseem ceeb.
Khoom noj khoom haus, dej haus thiab tshuaj:Cov txheej txheem tu cev rau cov khoom xyaw, cov tshuaj ntxuav thiab siab - dej huv, qhov twg polished, yooj yim ntxuav, tsis yog -reactive nto yuav tsum tau.
Kev tsim hluav taws xob:dej txias, boiler feedwater thiab auxiliary systems nyob rau hauv cov pa thiab nuclear nroj tsuag.
Marine thiab shipbuilding:dej hiav txwv, ballast thiab cov kab tua hluav taws raug cov tshuaj chloride- nplua nuj huab cua.
Cov kev pabcuam hauv tsev:dej nyob rau hauv cov ntug dej hiav txwv, cua sov underfloor thiab hydraulic systems uas lub neej ntev yam tsis muaj kev saib xyuas muaj nuj nqis.
Fabrication thiab Quality Control
1.4401 yog nkag tau yooj yim welded los ntawm cov txheej txheem arc, thiab tsis muaj kev tshaj tawm -weld kev kho cua sov yog xav tau rau cov qauv austenitic. Ib qho piv lossis me ntsis dhau -alloyed muab tub lim yog ib txwm xaiv; qhov twg qhov sib koom ua ke yuav tsis daws cov tshuaj annealed tom qab vuam, qhov qis - carbon muab tub lim yog nyiam rau nws cov tsis kam mus rau rhiab heev. Kev huv huv stainless tuav yog qhov tseem ceeb tshaj rau cov hlau: txhuam txhuam thiab sib tsoo discs, tsis muaj carbon steel tiv tauj, thiab tshem tawm tag nrho cov kab mob ua ntej pickling thiab passivation raws li ASTM A380 thiab ASTM A967.
Cov khoom xa tuaj kuaj xyuas feem ntau sib txuas cov ntawv pov thawj, tensile thiab hardness test, flattening los yog khoov kuaj qhov twg teev, intergranular corrosion testing qhov twg qhov kev txiav txim hu rau nws, hydrostatic los yog eddy tam sim no leak-tightness test raws li qeb xeem, thiab cov ntaub ntawv zoo ntawm cov raj tiav. Nto tiav, ncaj thiab qhov kawg kev npaj raug kuaj xyuas qhov kev txiav txim, thiab daim ntawv pov thawj zeb tau muab nrog cov xov tooj cua sov traceable rau cov raj xa khoom.
Thaum xaiv, 1.4401 feem ntau piv nrog 1.4301 ntawm ib sab tes thiab cov qib duplex ntawm lwm qhov. Cov molybdenum-cov kabmob qib tus nqi ntau dua 1.4301 tab sis muaj sia nyob cov kev pabcuam chloride uas 1.4301 yuav tsis, thiab nws tseem yooj yim dua rau kev tsim thiab vuam dua li cov kev xaiv duplex, uas yog vim li cas nws tseem yog qhov kev xaiv zoo tshaj plaws rau corrosive siab piping.
FAQ
Q: Qhov txawv ntawm EN 10216-5 1.4401 thiab ASTM A312 TP316 yog dab tsi?
Lawv piav qhia txog tib yam hlau tsis muaj steel hauv ob txheej txheem . 1.4401 yog European steel naj npawb rau X5CrNiMo17-12-2, thiab UNS S31600 yog Asmeskas xaiv; Qhov kev tso cai muaj pes tsawg leeg sib txawv me ntsis ntawm EN 10088-1 thiab ASTM A240, yog li tus qauv siv tau yuav tsum tau teev rau ntawm qhov kev txiav txim.
Q: Puas yog 1.4401 yeeb nkab seamless lossis welded?
TS EN 10216-5 npog seamless raj nkaus xwb. Rau welded stainless siab raj, tus qauv European sib xws yog EN 10217-7, yog li qhov yuav tsum tau ua rau cov kav ntev ntev yuav tsum raug txiav txim tawm tsam tus qauv ntawd.
Q: Vim li cas molybdenum ntxiv rau qib no?
Molybdenum tsub kom tsis kam mus rau pitting thiab crevice corrosion nyob rau hauv chloride -cov kabmob ib puag ncig. Qhov ntawd yog qhov laj thawj tseem ceeb ntawm 1.4401 raug xaiv dhau ntawm molybdenum- dawb 1.4301 qib rau dej hiav txwv, de-icing ntsev thiab ntau yam tshuaj ua haujlwm.
Q: Puas yog 1.4401 yeeb nkab xav tau tom qab-weld kev kho cua sov?
Tsis yog. Cov qauv austenitic ruaj khov ntawm qhov kub thiab txias, yog li cov pob qij txha welded siv nyob rau hauv raws li -welded mob. Ntxuav, pickling thiab passivation ntawm vuam thiab tshav kub tint yog yuav tsum tau, tab sis ib tug ncej -weld tshav kub kev kho mob tsis yog.
Q: Qeb xeem hauv EN 10216-5 txhais li cas?
Nws txhais tau hais tias qhov tsis yog - kev kuaj xyuas puas thiab xau- kev ntsuas nruj ua ntej xa khoom. Xaiv cov qeb kom raug nyob rau theem kev nug kho ob qho tib si cov nqi tshuaj xyuas thiab cov ntaub ntawv zoo uas yuav nrog rau cov hlab.
Q: 1.4401 puas tuaj yeem siv rau qhov kub thiab txias?
Yog lawm. Cov qauv austenitic khaws cov ductility thiab cuam tshuam rau qhov kub thiab txias, yog li qib siv rau hauv cov kev pabcuam txias thiab cryogenic nrog rau qhov kub siab, tsis zoo li qib ferritic lossis martensitic stainless.
