SUS 904L Stainless Hlau Phaj Rau Cia Tank

Puas yog koj tab tom nrhiav rau cov khoom siv tank uas tseem muaj corrosion-tiv taus txawm nyob rau hauv ib puag ncig acidic heev? Thaum tuav cov qib siab -concentration sulfuric acid, phosphoric acid, los yog chemical media uas muaj chloride ions, tus qauv 316L stainless hlau feem ntau succumbs rau pitting corrosion los yog kev nyuaj siab corrosion tawg nyob rau hauv ib tug luv luv lub sij hawm.
Raws li tus neeg muag khoom tshwj xeeb ntawm cov hlau tshwj xeeb, GNEE muab cov khoom zoo siab - zooSUS 904L (UNS N08904) stainless hlau daim hlauuas ua raws li ASTM B625 / ASME SB625 tus qauv. Txawm hais tias koj xav tau cov khoom siv rau kev tsim cov khoom loj- nplai sulfuric acid cia tank, cov khoom siv hluav taws xob, lossis cov hlab ntsha siab, peb cov 904L nruab nrab- rau- cov phaj hnyav ua kom lub neej ntev ntev rau koj cov khoom siv.

 

Vim li cas 904L Phaj yog qhov Kev Xaiv Zoo Tshaj Plaws rau Kev Lag Luam Tank Manufacturing?

SUS 904L stainless hlau phaj yog super-austenitic stainless hlau uas muaj 1.5% tooj liab (Cu). Qhov no muaj pes tsawg leeg endows nws nrog tshwj xeeb corrosion kuj nyob rau hauv sulfuric acid ntawm ntau yam concentrations (txog 70 degree), zoo daws qhov teeb meem tsis tu ncua ntawm perforation nyob rau hauv tshuaj cia tso tsheb hlau luam. Nrog nws cov ntsiab lus siab ntawm 25% npib tsib xee (Ni) thiab 4.5% molybdenum (Mo), 904L qhia pitting tsis kam zoo tshaj li ntawm 316L nyob rau hauv siab -chloride ib puag ncig, yog li zoo txo ​​qhov kev pheej hmoo ntawm tank leakage los ntawm localized corrosion.
Hais txog lub phaj dov thiab vuam txheej txheem uas muaj nyob rau hauv lub tank tsim, peb 904L daim hlau qhia tau zoo heev ductility. Txawm tias thaum lub sij hawm vuam ntawm daim hlau tuab, cov khoom siv cov ntsiab lus ntawm cov pa roj carbon tsawg minimizes carbide nag lossis daus, yog li ua kom cov corrosion kuj ntawm weld aav.

 

SUS 904L (UNS N08904) Stainless Hlau Phaj Specifications

Parameter	Specifications & Standards
Khoom Qib	SUS 904L / UNS N08904 / DIN 1.4539 / EN 10088-2
Executive Standard	ASTM B625, ASME SB625 (Tswj Vaj Huam Sib Luag), JIS G4304
Thickness Ntau	3.0mm - 100mm (Kub Rolled Phaj rau Tank)
Kev xaiv dav	1500mm, 2000mm, 2500mm, 3000mm (Ntxiv -wide rau tsawg weld seams)
Ntev Options	6000mm, 8000mm, 12000mm, los yog Custom Cut-rau-Length
Nto tiav	No.1 (Kub Rolled, Annealed & Pickled), 2B (Cold Rolled)
Ntug mob	Mill Edge los yog Slit Edge (Precision Sheared)
Tolerance Control	Raws li ASTM A480 (Tighter tolerances available on the request)

 

SS 904L txias dov Sheets Chemical Composition

Qib	C	Mn	Si	P	S	Cr	Mo	Ni	Cu
wb 904l	0.020 max	2 max	max 1.00 Nws	0.040 max	0.030 max	19.00 – 23.00	4.00-5.00 Nws	23.00 – 28.00	1.00 – 2.00

 

SS 904L Sheets Mechanical Properties

Qhov ntom	Melting Point	Tensile zog	Yield zog (0.2% Offset)	Elongation
7,95g 3	1350℃(2460℃F)	Psi - 71000, MPa - 490	Psi - 32000, MPa - 220	35 %

 

Kev tshuaj xyuas: Txhua pawg ua tiav 100% Kev Ntsuas Ultrasonic (UT) kom ntseeg tau tias sab hauv ntawm cov phaj tuab yog pub dawb los ntawm cov tshuab tshuab thiab suav nrog, yog li ua raws li cov qauv kev nyab xeeb rau cov hlab ntsha siab.
Kev ntim khoom: Rau loj- cov ntawv loj uas npaj rau kev tsim lub tank ntim khoom, peb siv cov khoom siv txuas ntxiv- steel pallets thiab cov hnab yas tiv thaiv zaj duab xis tsim los tiv thaiv dej hiav txwv corrosion. Kev tiv thaiv ib daim hlab yog affixed rau lub phaj npoo los tiv thaiv kaum kev puas tsuaj thaum lub sij hawm thauj mus los ntawm hiav txwv thiab av, xyuas kom meej tias cov khoom yog npaj txhij rau dov tam sim ntawd thaum tuaj txog.

FAQ

Q1: Vim li cas tus nqi ntawm 904L thiaj li siab dua li ntawm 316L?
A: 904L muaj ntau dua ob npaug ntawm nickel cov ntsiab lus ntawm 316L, ntxiv rau cov molybdenum kim thiab tooj liab. Txawm hais tias thawj zaug peev yog siab dua, nyob rau hauv ib puag ncig corrosive heev, 904L muaj cov nqi kho mob qis heev thiab cov cuab yeej siv lub neej uas yog 3 mus rau 5 npaug ntev dua li ntawm 316L, yog li txo qhov kev pheej hmoo ntawm downtime los ntawm kev hloov khoom siv.
Q2: Dab tsi yuav tsum tau ceev faj thaum vuam 904L thaum lub sij hawm tsim cov tso tsheb hlau luam?
A: Peb pom zoo kom siv ER385 vuam hlau rau 904L. Vim nws cov coefficient siab ntawm thermal expansion, peb qhia ua kom qhov kub ntawm qhov sib cuam tshuam hauv qab 150℃kom tsis txhob kub tawg. Peb pab pawg kws tshaj lij tuaj yeem muab cov lus qhia ntxaws ntxaws ntawm cov khoom siv vuam, uas yuav raug xa nrog cov ntaub ntawv.
Q3: Koj tuaj yeem lav qhov tseeb ntawm koj cov ntaub ntawv li cas?
A: Txhua lub phaj SUS 904L tau txais kev kuaj pom zoo (PMI) thiab tau nrog daim ntawv pov thawj Mill Test (MTC) uas ua raws li EN 10204 3.1 tus qauv. Peb kuj zoo siab tos txais rau ntawm -kev tshuaj xyuas qhov chaw los ntawm thib peb- cov koom haum tog, xws li SGS lossis BV.