1.4571 Stainless hlau yog dab tsi?
Apr 02, 2026
Tso lus
1.4571 stainless hlau, feem ntau hu ua 316Ti los yog UNS S31635, yog titanium-stabilized version ntawm tus qauv 316 molybdenum-alloyed austenitic stainless hlau. Qhov sib ntxiv ntawm titanium txhim khu kev tiv thaiv rau intergranular corrosion tom qab vuam los yog raug kub kub, combining zoo heev corrosion kuj ntawm 316 nrog stabilization cov txiaj ntsig ntawm titanium. Qhov no ua rau nws zoo tagnrho rau welded Cheebtsam hauv tshuaj, tshuaj, thiab siab -kub daim ntaub ntawv uas post-weld heat treatment yog impractical.
Qhov no ruaj khov molybdenum- qib alloyed yog tus qauv raws li cov txheej txheem thoob ntiaj teb tseem ceeb.
| Txuj | Qib sib npaug |
|---|---|
| EN (Tebchaws Europe) | 1.4571 |
| ASTM / AISI (USA) | 316 Ti, UNS S31635 |
| JIS (Nyiv) | SUS 316 Ti |
| KS (Korea) | STS 316 Ti |
| Lub Npe | 316 Ti |
Titanium yog ntxiv rau khi nrog carbon thiab tiv thaiv chromium depletion ntawm cov ciam teb, thaum molybdenum txhim khu pitting kuj.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Ti |
|---|---|---|---|---|---|---|---|---|---|
| Cov ntsiab lus (%) | Tsawg dua los yog sib npaug li 0.08 | Tsawg dua los yog sib npaug rau 1.0 | Tsawg dua los yog sib npaug rau 2.0 | Tsawg dua lossis sib npaug li 0.045 | Tsawg dua lossis sib npaug li 0.03 | 16.5 - 18.5 | 10.5 - 13.5 | 2.0 - 2.5 | Ntau dua lossis sib npaug li 5xC |
Nws tuav cov khoom siv kho tshuab zoo ntawm 316 tsev neeg nrog zoo heev corrosion kuj.
| Khoom | Yield zog (Rp0.2) | Tensile zog (Rm) | Elongation (A) | Hardness (HB) |
|---|---|---|---|---|
| Tus nqi | Ntau tshaj lossis sib npaug li 200 MPa | 500 - 700 MPa | Ntau dua lossis sib npaug li 40% | Tsawg dua lossis sib npaug li 215 |
Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4571 / 316Ti
Intergranular Corrosion kuj:Titanium tiv thaiv chromium carbide tsim ntawm cov ciam teb thaum lub sij hawm raug kub ntawm 450-850 degree, tswj corrosion kuj nyob rau hauv welded lug.
Enhanced Pitting Resistance:Cov ntsiab lus molybdenum (2-2.5%) muab kev tiv thaiv zoo tshaj rau chloride-induced pitting thiab crevice corrosion piv rau cov qib tsis molybdenum.
Zoo Siab -Tsub Ua Haujlwm:Haum rau kev pabcuam sib cuam tshuam txog li 850℃thiab kev pabcuam txuas ntxiv mus rau ib puag ncig 750℃nrog kev ua haujlwm zoo oxidation.
Zoo heev Formability thiab Weldability:tuaj yeem welded los ntawm txhua txoj hauv kev yam tsis tas yuav tsum muaj kev tshaj tawm -weld kev kho cua sov, ua rau nws zoo tagnrho rau hnyav welded fabrications.
Cov ntawv thov tseem ceeb:
Tshuaj thiab Petrochemical:Welded hlab ntsha, cua sov exchangers, thiab kav kav dej tuav cov tshuaj corrosive ntawm siab kub.
Pharmaceutical:Cov khoom siv uas dhau los ua kom tsis muaj cua sov ntau zaus thiab yuav tsum tau muaj purity siab.
Marine & Coastal:Cheebtsam raug rau dej hiav txwv los yog ntsev-laden cua nyob qhov twg vuam yuav tsum tau.
Kev tsim hluav taws xob:Boiler Cheebtsam, superheater qhov chaw, thiab feedwater heaters.
Automotive:Exhaust systems thiab cov khoom raug raug kub siab.
Kev ua zaub mov:Cov cuab yeej xav tau kom tsis muaj menyuam thiab tiv thaiv corrosion.
Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm kev siv 316Ti (1.4571) dhau tus qauv 316 (1.4401) rau kev siv vuam?
Lub ntsiab kom zoo dua yog nws stabilization tiv thaiv rhiab heev thaum vuam. Standard 316 tuaj yeem ntsib chromium carbide nag lossis daus hauv tshav kub- cuam tshuam thaj tsam thaum vuam, uas ua rau muaj kev cuam tshuam ntawm intergranular corrosion. Cov titanium hauv 316Ti tsim cov carbides ruaj khov, tiv thaiv chromium depletion thiab tswj kev tiv thaiv corrosion tsis tas yuav tsum tau tom qab-weld heat treatment. Qhov no ua rau 316Ti qhov kev xaiv zoo tshaj plaws rau cov khoom hnyav welded thiab cov khoom siv uas yuav ua haujlwm hauv qhov kub thiab txias (450-850 degree) lossis hauv qhov chaw corrosive tom qab vuam.
Puas yog 316Ti stainless hlau haum rau siab -chloride ib puag ncig zoo li dej hiav txwv?
316Ti muaj kev tiv thaiv zoo rau chloride nres, zoo dua li 304 qib, vim nws cov ntsiab lus molybdenum. Txawm li cas los xij, rau kev nkag mus rau hauv dej hiav txwv tsis tu ncua los yog cov tshuaj chloride hnyav heev ntawm qhov kub siab, cov ntaub ntawv alloyed ntau dua li super duplex (2507) lossis super austenitic (904L, 6% Mo qib) yuav raug pom zoo. 316Ti ua tau zoo hauv thaj chaw txaws, thaj chaw ntug dej hiav txwv, thiab tshwj xeeb tshaj yog nyob rau hauv cov kev siv tshuaj chloride. stabilization muab kev tiv thaiv ntxiv. Rau cov ntawv thov dej hiav txwv hauv dej tag nrho ntawm qhov kub thiab txias, 316Ti tuaj yeem siv tau tab sis nrog kev tsim qauv zoo kom tsis txhob muaj kev sib tsoo.
Dab tsi yog qhov kev txiav txim siab vuam rau 316Ti?
316Ti muaj qhov zoo tshaj plaws weldability siv txhua txoj hauv kev xws li TIG, MIG, SMAW, thiab SAW. Cov ntsiab lus tseem ceeb suav nrog:
Muab cov hlau sib txuam (ER316Ti lossis ER316L) raug pom zoo
Tsis muaj kev tshaj tawm -weld cua sov yuav tsum tau kho vim titanium stabilization
Pom zoo cua sov input: 0.5-2.0 kJ / mm
Interpass kub yuav tsum khaws cia qis dua 150 degree
Shielding gas (argon los yog argon nrog 2-5% nitrogen) tiv thaiv lub pas dej ua ke
Tshaj tawm -welding tu thiab pickling / passivation yog pom zoo rau qhov zoo tshaj plaws corrosion kuj
Nrhiav kev ntseeg siab ntawm 1.4571 / 316Ti Stainless Hlau?
GNEE Steel muab cov khoom siv siab - zoo 316Ti (1.4571) stainless hlau hauv phaj, ntawv, yeeb nkab, raj, bar, thiab cov ntaub ntawv haum, zoo tagnrho rau cov ntawv thov welded xav tau kev txhim kho corrosion. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab cov kev pabcuam ua tiav nrog rau kev txiav, khoov, sib sau, thiab vuam. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.
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