1.4562 Stainless hlau yog dab tsi?

1.4562 stainless hlau, feem ntau hu ua Alloy 31 los yog UNS N08031, yog siab -kev ua tau zoo, nitrogen- txhim kho austenitic stainless hlau uas txuas qhov sib txawv ntawm super austenitic stainless hlau thiab npib tsib xee-raws li alloys. Nrog nws cov chromium siab, molybdenum, thiab nitrogen cov ntsiab lus, ua ke nrog cov npib tsib xee thiab tooj liab tseem ceeb, nws muaj kev tiv thaiv tshwj xeeb rau ob qho tib si oxidizing thiab txo cov kua qaub, nrog rau kev ua haujlwm zoo rau chloride-induced pitting thiab crevice corrosion. Qhov no ua rau nws tsim nyog rau cov kev xav tau tshaj plaws ntawm kev ua tshuaj, kev tswj kev ua qias tuaj, thiab kev siv sab nrauv.

 

Qhov siab - qib kev ua tau zoo no yog tus qauv raws li cov qauv tseem ceeb thoob ntiaj teb.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4562
ASTM / AISI (USA)	Alloy 31, UNS N08031
Lub Npe	Alloy 31, 31% Ni Alloy

Nws cov ntsiab lus siab alloy, suav nrog npib tsib xee, chromium, molybdenum, nitrogen, thiab tooj liab, muab kev tiv thaiv corrosion zoo heev.

Element	C	Si	Mn	P	S	Cr	Ni	Mo	N	Cu
Cov ntsiab lus (%)	Tsawg dua lossis sib npaug li 0.015	Tsawg dua los yog sib npaug li 0.3	Tsawg dua los yog sib npaug rau 2.0	Tsawg dua lossis sib npaug li 0.02	Tsawg dua los yog sib npaug li 0.01	26.0 - 28.0	30.0 - 32.0	6.0 - 7.0	0.15 - 0.25	1.0 - 1.4

Nws muaj cov khoom zoo txhua yam ua ke nrog kev ua haujlwm zoo corrosion.

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)
Tus nqi	Ntau tshaj lossis sib npaug li 300 MPa	650 - 850 MPa	Ntau dua lossis sib npaug li 40%	Tsawg dua los yog sib npaug li 250

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4562 / Alloy 31

Exceptional Acid Resistance:Muab cov tshuaj tiv thaiv zoo heev rau sulfuric, phosphoric, thiab nitric acids thoob plaws ntau qhov chaw thiab qhov kub thiab txias, nrog rau qhov tshwj xeeb zoo tshaj plaws nyob rau hauv ib puag ncig sulfuric acid.

High Pitting thiab Crevice Corrosion Resistance:Nrog rau PREN (Pitting Resistance Equivalent Number) > 45, nws muaj cov tshuaj tiv thaiv zoo heev hauv cov tshuaj chloride- uas muaj ib puag ncig, suav nrog cov dej hiav txwv thiab cov tshuaj brine.

Zoo heev Stress Corrosion Cracking Resistance:Cov ntsiab lus siab nickel muab kev tiv thaiv zoo tshaj rau chloride kev nyuaj siab corrosion cracking, tshaj ntau lwm yam stainless hlau.

Zoo Weldability thiab Formability:Yuav tau welded siv cov tswv yim sib txuam nrog los yog tshaj -alloyed muab tub lim hlau, nthuav tawm cov ductility zoo rau kev ua haujlwm.

 

Cov ntawv thov tseem ceeb:

Kev ua tshuaj lom neeg:Reactors, heat exchangers, thiab piping rau aggressive acid kev pab cuam, tshwj xeeb tshaj yog sulfuric thiab phosphoric acid ntau lawm.

Pollution Control:Scrubbers, ducting, thiab chimney liners hauv flue gas desulfurization (FGD) systems.

Offshore & Marine:Seawater piping, twj, thiab li qub hauv cov nroj tsuag desalination thiab offshore platforms.

Pharmaceutical:Cov cuab yeej tuav cov tshuaj ntxuav corrosive thiab cov txheej txheem tshuaj.

Pulp & Ntawv:Cov khoom siv bleaching thiab digesters nyob rau hauv ib puag ncig nruj.

Roj & Roj:Cov roj ua kua qaub thiab cov khoom siv hauv qhov chaw muaj corrosive heev.

 

Alloy 31 (1.4562) piv rau 904L (1.4539) thiab 6% Mo qib li cas?
Alloy 31 offers significantly higher performance than 904L and even surpasses most 6% molybdenum super austenitic grades. Compared to 904L, Alloy 31 contains higher chromium (27% vs. 21%), higher nickel (31% vs. 25%), higher molybdenum (6.5% vs. 4.5%), and nitrogen addition, giving it a much higher PREN (>45 vs . 32-34). Qhov no txhais tau tias muaj kev tiv thaiv zoo rau pitting, crevice corrosion, thiab txo cov kua qaub. Piv rau 6% Mo qib zoo li 254 SMO, Alloy 31 muaj kev ua tau zoo dua hauv kev txo qis ib puag ncig thiab muaj peev xwm kub dua. Nws txuas qhov sib txawv ntawm super austenitic stainless steels thiab npib tsib xee-raws li alloys xws li C-276, feem ntau ua hauj lwm raws li ib tug nqi-zoo lwm txoj kev uas tag nrho cov peev xwm ntawm nickel alloys tsis tas yuav tsum tau.

 

Dab tsi yog qhov kev txiav txim siab vuam rau Alloy 31 (1.4562) stainless hlau?
Vuam Alloy 31 yuav tsum tau ceev faj tswj kom muaj kev tiv thaiv corrosion. Cov kev coj ua uas pom zoo suav nrog kev siv qhov sib txuam lossis dhau - cov hlau muab tub lim, xws li Alloy 59 lossis Alloy 625 hom fillers, kom ntseeg tau tias thaj chaw weld tswj kev tiv thaiv corrosion piv rau lub hauv paus hlau. Kev tswj cov cua sov (feem ntau yog 0.5-1.5 kJ/mm) thiab cov roj tiv thaiv zoo (argon{11}}raws li) yog ib qho tseem ceeb kom tsis txhob muaj qoob loo ntau dhau thiab nag lossis daus ntawm cov theem tsis zoo. Interpass kub yuav tsum khaws cia qis dua 100 degree. Kev ntxuav tom qab vuam yog pom zoo kom rov ua kom muaj kev tiv thaiv corrosion, thiab pickling / passivation yuav tsum tau ua kom ntseeg tau tias kev ua tau zoo.

 

Qhov kub ntau npaum li cas yog Alloy 31 haum rau?
Alloy 31 yog tsim rau ntau qhov kub thiab txias, los ntawm cov xwm txheej cryogenic txog li 400℃(752℃F) rau kev pabcuam txuas ntxiv. Nws cov ntsiab lus nickel siab ua kom muaj zog zoo heev ntawm qhov kub thiab txias, thaum nws cov qauv austenitic ruaj khov tswj cov khoom zoo ntawm qhov kub siab. Rau kev tiv thaiv corrosion, nws ua tau zoo heev txog li 250℃hauv ntau qhov chaw acid. Tshaj li 400℃, ntev - lub sij hawm raug cuam tshuam yuav ua rau muaj kev hloov pauv microstructural uas tuaj yeem cuam tshuam cov khoom, yog li qhov kub siab dua yuav tsum raug ntsuas raws li cov ntawv thov tshwj xeeb.

Nrhiav kev ntseeg siab ntawm 1.4562 / Alloy 31 Stainless Hlau?
GNEE Steel muab hwm Alloy 31 (1.4562 / UNS N08031) stainless hlau nyob rau hauv phaj, yeeb nkab, haum, thiab bar cov ntaub ntawv rau feem ntau xav tau corrosive daim ntaub ntawv. Peb muab tag nrho cov ntaub ntawv traceability thiab ntawv pov thawj (EN 10204 3.1) kom ntseeg tau tias kev ua tau zoo. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.