1.4362 Stainless hlau yog dab tsi?

1.4362 stainless hlau, feem ntau hu ua 2304 los yog UNS S32304, yog ib tug lean duplex stainless hlau uas muaj tus nqi - zoo lwm txoj rau cov pa austenitic thiab duplex qib. Nrog rau kev sib npaug ferritic- austenitic microstructure, nws muab kwv yees li ob zaug ntawm cov khoom muaj zog ntawm 304 thiab 316 stainless hlau, zoo corrosion kuj, thiab zoo heev tiv thaiv kev ntxhov siab corrosion cracking. Nws cov ntsiab lus qis qis ua rau nws pheej yig dua li cov qauv duplex qib thaum tseem muab cov txiaj ntsig tseem ceeb ntawm austenitic steels.

 

Cov qib lean duplex no yog tus qauv raws li cov txheej txheem thoob ntiaj teb tseem ceeb.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4362
ASTM / AISI (USA)	2304, UA S32304
Lub Npe	Lean Duplex 2304

Nws muaj pes tsawg leeg yog sib npaug nrog qis nickel thiab molybdenum cov ntsiab lus ntau dua li cov qauv duplex rau tus nqi -kev ua tau zoo.

Lub ntsiab	C	Si	Mn	P	S	Cr	Ni	Mo	N
Cov ntsiab lus (%)	Tsawg dua los yog sib npaug li 0.03	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua lossis sib npaug li 2.5	Tsawg dua lossis sib npaug li 0.04	Tsawg dua los yog sib npaug li 0.03	21.5 - 24.5	3.0 - 5.5	0.1 - 0.6	0.05 - 0.20

Nws muaj lub zog siab nrog zoo toughness thiab corrosion kuj.

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)	Kev cuam tshuam (J)
Tus nqi	Ntau tshaj lossis sib npaug li 400 MPa	600 - 820 MPa	Ntau dua lossis sib npaug li 25%	Tsawg dua lossis sib npaug li 290	Ntau dua lossis sib npaug rau 100 (20 degree)

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4362 / 2304

Siab zog:Muab kwv yees li ob npaug ntawm qhov kev tawm dag zog ntawm cov qib austenitic xws li 304L thiab 316L (400 MPa vs . 200 MPa), uas tso cai rau txo qhov hnyav hnyav thiab cov ntu nyias hauv cov qauv siv.

Zoo Corrosion Resistance:Muab kev tiv thaiv corrosion ntawm 304L thiab 316L, nrog PREN feem ntau 24-26. Kev tiv thaiv zoo heev rau kev ntxhov siab corrosion cracking hauv chloride ib puag ncig.

Tus nqi -zoo:Cov ntsiab lus qis nickel thiab molybdenum ua rau nws pheej yig dua li tus qauv duplex 2205, thaum muab kev ua tau zoo dua li qib austenitic.

Zoo Weldability:Yuav tau welded siv cov tswv yim uas tsim nyog cov hlau muab tub lim, tswj cov khoom zoo nyob rau hauv cov kev mob welded yam tsis muaj post-weld heat treatment.

 

Cov ntawv thov tseem ceeb:

Structure Engineering:Cov choj, cov tso tsheb hlau luam, cov hlab ntsha siab, thiab cov yam ntxwv ntawm cov vaj tse uas xav tau lub zog siab thiab corrosion kuj.

Kev kho dej:Tank, kav dej, thiab cov khoom siv hauv cov nroj tsuag desalination, dej rhaub dej, thiab kev kho dej khib nyiab.

Kev ua zaub mov:Cov khoom siv rau kev tuav zaub mov thiab dej haus qhov twg xav tau cov tshuaj chloride.

Pulp & Ntawv:Lub tank cia thiab tuav cov khoom siv rau cov txheej txheem ntws.

Tubrog nkoj:Nkoj shafts, fittings, thiab cov khoom nyob rau hauv ib puag ncig ntug hiav txwv.

Roj & Roj:Cov kav dej thiab tso tsheb hlau luam hauv kev pabcuam qaub qis qis.

Renewable Zog:Hnub ci vaj huam sib luag thav duab thiab kev txhawb nqa cov qauv hauv cov chaw ntug dej hiav txwv.

 

2304 (1.4362) piv rau 304L (1.4307) thiab 316L (1.4404) li cas?
2304 muaj kwv yees li ob npaug ntawm cov khoom muaj zog ntawm ob qho tib si 304L thiab 316L (400 MPa vs . 200 MPa), ua kom muaj kev txuag hnyav hauv cov qauv tsim thiab tso cai rau cov khoom siv thinner. Nws cov corrosion kuj nyob ntawm 304L thiab 316L, nrog PREN 24-26 muab cov pitting zoo dua li 304L (PREN 18-20) tab sis tsawg dua 316L (PREN 24-26 nyob ntawm seb muaj pes tsawg leeg). Nws muab kev tiv thaiv zoo tshaj plaws rau chloride kev nyuaj siab corrosion cracking piv rau ob qib austenitic . 2304 feem ntau yog tus nqi zoo dua li 316L thiab tus nqi ruaj khov vim qis nickel cov ntsiab lus. Txawm li cas los xij, 304L thiab 316L muab cov qauv zoo dua rau cov duab nyuaj thiab muaj zog dua ntawm qhov kub thiab txias heev . 2304 feem ntau yog xaiv los ua ib qho kev siv zog ntau dua rau 304L, lossis ua lwm txoj hauv kev lag luam rau 316L qhov twg nws cov corrosion kuj txaus.

 

Dab tsi yog qhov kev txiav txim siab vuam rau 2304 (1.4362) duplex stainless hlau?
Vuam 2304 yuav tsum tswj xyuas qhov sib npaug ferrite-austenite microstructure rau cov khoom zoo. Cov kev coj ua uas pom zoo suav nrog kev siv qhov sib txuam lossis me ntsis dhau ntawm- cov hlau nplaum uas muaj hlau (feem ntau yog 2209 hom), tswj cov khoom siv hluav taws xob (0.5-2.5 kJ/mm), thiab tswj qhov kub ntawm qhov sib txawv hauv qab 150℃. Tiv thaiv roj nrog nitrogen ntxiv (feem ntau Ar + 2-3% N2) pab tswj cov ntsiab lus nitrogen thiab txhawb kev tsim cov austenite hauv cov hlau vuam. Preheating feem ntau tsis tas yuav tsum tau ua, thiab tom qab-weld kev kho cua sov tsis tsim nyog. Cov ntsiab lus qis qis ua rau 2304 zam ntau dua rau vuam ntau dua - qib alloyed duplex, nrog lub qhov rai ua haujlwm dav dua thiab txo qhov kev pheej hmoo ntawm kev tsim cov theem tsis zoo. Rau qhov zoo tshaj plaws corrosion kuj nyob rau hauv ib puag ncig hnyav, over-alloyed muab tub lim hlau yuav raug txiav txim siab los them rau ib qho kev poob nitrogen thaum lub sij hawm vuam.

 

Nrhiav kev ntseeg siab ntawm 1.4362 / 2304 Stainless Hlau?
GNEE Steel cov khoom siv tus nqi -zoo Lean Duplex 2304 (1.4362) stainless hlau hauv phaj, ntawv, bar, yeeb nkab, thiab cov ntaub ntawv haum rau kev tsim thiab kev siv. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab kev txhawb nqa suav nrog kev txiav, khoov, sib sau, thiab kev pabcuam vuam. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.