09CrCuSb Seamless Steel Pipes Rau Economizeryog ib qho tshwj xeeb alloy raj tsim los tiv thaiv qis -kub sulfuric acid dew point corrosion nyob rau hauv siab - sulfur flue gas ib puag ncig. Nws yog dav siv nyob rau hauv economizers, cua preheaters, thiab qis- kub cua kub qhov chaw ntawm thee- raug rho tawm haujlwm thiab roj- hluav taws kub boilers. Cov khoom siv yog tsim raws li GB / T 150.2, GB / T 3087, lossis GB / T 5310 tus qauv.
Cov hlau muaj Cr (0.70–1.20%), Cu (0.25–0.45%), thiab Sb (0.10–0.20%), uas pab tsim ib tug tuab tiv thaiv zaj duab xis nyob rau saum npoo, ho txhim kho corrosion kuj. Nws tsis kam mus rau sulfuric acid dew point corrosion yog 3-5 zaug siab dua li cov pa roj carbon zoo xws li 20G.
Nws ua tau zoo nyob rau hauv lub siab sab hauv, flue roj yaig, thiab thermal cycling, nrog rau kev pab cuam kub txog li 400 degree. Piv nrog rau cov hlau tsis muaj steel, nws tuaj yeem txo cov nqi khoom siv txog li 50%.
Peb muab 09CrCuSb seamless boiler raj hauv OD Φ32-51 hli thiab WT 3-5 hli, nrog ntev ntawm 6-12 meters los yog customized. Tag nrho cov kav dej tau raug kuaj tag nrho los ntawm UT, ET, thiab kev sim hydrostatic kom ntseeg tau tias kev ua tau zoo hauv kev siv fais fab boiler.
09CrCuSb Seamless Steel Pipes Specification
| Yam khoom | Specifications |
| Khoom npe | 09CrCuSb Seamless Steel Pipes rau Economizer (ND Steel Pipes) |
| Khoom siv | 09CrCuSb (ND hlau) |
| Txuj | GB / T 150.2, GB / T 3087, GB / T 5310, thiab lwm yam. |
| Sab nraud Diameter (OD) | Φ32mm - Φ51mm (Cov kev qhia tshwj xeeb rau cov neeg lag luam) |
| Phab ntsa Thickness (WT) | 3.0mm - 5.0 hli |
| Ntev | Tsau ntev: 6m - 12m, lossis customized ntev raws li kev tsim qauv rau cov kav dej khoov thiab serpentine raj bundles. |
| Ua siab ntev | Raws li tus qauv |
| Kev kuaj & tshuaj xyuas | Ultrasonic Testing (UT), Eddy Current Testing (ET), Hydrostatic Test, thiab lwm yam. |
| Kev Tswj Xyuas Zoo | ISO9001, CE, Thib Peb-Tag Nrho Kev Ntsuas / Kev Tshuaj Xyuas, Cov Ntawv Pov Thawj muaj feem xyuam rau cov neeg yuav khoom lub teb chaws |
| Lub Sijhawm Lead | Nyob ntawm specifications, kom muaj nuj nqis, thiab lwm yam. |
| Pob | Txheem seaworthy pob, los yog raws li xav tau |
Peb tuaj yeem muab 09CrCuSb seamless steel kav hauv ntau qhov ntau thiab tsawg thiab phab ntsa tuab. Thov hu rau peb yog tias koj xav tau qhov ntev customized rau koj qhov project economizer.
Hu rau tam sim no kom tau txais 09CrCuSb seamless steel kav cov npe Tshuag
09CrCuSb (ND Steel) Seamless Boiler Tube Ua tiav Dimensional Tolerance Table
| Yam khoom | Specification | Tolerance / Yuav tsum tau |
|---|---|---|
| Sab nraud txoj kab uas hla (OD) Tsawg dua los yog sib npaug li 30 mm | ± 0.30 hli | |
| Sab nraud txoj kab uas hla (OD) 30 - 50 mm | ± 0.40 hli | |
| Sab nraud txoj kab uas hla (OD) 50 - 70 mm | ± 0.60 hli | |
| Sab nraud txoj kab uas hla (OD) 70 - 100 mm | ± 0.80 hli | |
| Sab nraud txoj kab uas hla (OD)> 100 mm | ± 1% ntawm OD | |
| Phab ntsa Thickness (WT) Tsawg dua lossis sib npaug li 4 hli | ±12.5% | |
| Phab ntsa Thickness (WT) 4 - 10 mm | ±10% | |
| Phab ntsa Thickness (WT) > 10 hli | ±8% | |
| Length (Tswj Length Tsawg dua lossis sib npaug li 12 m) | +10 / 0 mm | |
| Ntev (Random Length) | 3000-12000mm (los yog raws li daim ntawv cog lus) | |
| Precision Txiav Length | ± 5 hli (los yog nruj dua li qhov kev thov) | |
| Ncaj (tsawg dua lossis sib npaug li 6 m) | Tsawg dua los yog sib npaug li 1.5 hli ib 'meter' | |
| Straightness (> 6 m) | Tsawg dua los yog sib npaug li 2.0 mm ib 'meter' | |
| Txuj | GB / T 3087 / GB / T 5310 (los yog sib npaug) | Cov qauv siv tau |
| Daim ntawv thov | Economizer / Cua Preheater / Tsawg- qhov kub thiab txias qhov chaw | Boiler systems |
09CrCuSb Chemical Composition
| 09CrCuSb Chemical Composition (%) | |||||||
| C | Si | Mn | P | S | Cr | Cu | Sb |
| Tsawg dua lossis sib npaug li 0.12 | 0.20-0.40 | 0.35-0.65 | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.020 | 0.70-1.10 | 0.25-0.45 | 0.04-0.10 |
09CrCuSb Tubes Mechanical Property
| 09CrCuSb Tubes Mechanical Properties RT (EN ISO 6892-1) |
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| Tensile | Yield | Elongation | Corrosion kuj tus nqi |
| Lub zog Rm (MPa) | Lub zog ReL (MPa) | A (%) | mg/cm².h |
| 390-550 | Ntau dua lossis sib npaug li 245 | Ntau dua lossis sib npaug li 25 | 7.4 |
Daim ntawv thov: 09CrCuSb seamless raj hauv Boiler Economizer Systems
Economizer serpentine tube pob:
Raws li cov khoom tseem ceeb ntawm serpentine cua sov qhov chaw, nws ua tau zoo heev txias dabtsi yog khoov kev ua tau zoo (tsis muaj kab nrib pleb nyob rau hauv 180℃dabtsi yog khoov kuaj), ua kom nws haum rau me me khoov vojvoog yeeb nkab txoj kev.
Nrog rau cov pa roj carbon sib npaug tsawg dua lossis sib npaug li 0.38%, nws yuav tsum tsis txhob ua kom sov thaum lub sijhawm vuam, thiab cov vuam sib txuas ua tiav lub zog sib npaug ntawm cov hlau hauv paus, kom tsis txhob muaj dej ntws hauv qhov siab - qhov kub thiab siab - cov dej ntws tawm.
Tsawg- qhov kub thiab txias tiv thaiv qhov chaw:
Nws yog tshwj xeeb ntsia rau hauv qhov txias kawg ntawm tus economizer (qhov siab - qhov chaw muaj kev pheej hmoo condensation ntawm feedwater inlet thiab flue gas qhov hluav taws xob) raws li thawj qhov teeb meem tiv thaiv dilute sulfuric acid corrosion. Nws cov kua qaub tsis kam yog 3-5 npaug siab dua li cov pa roj carbon zoo tib yam, tiv thaiv phab ntsa perforation ntxov ntxov thiab lub raj tsis ua haujlwm.
Tube liner thiab kev txhawb nqa cov qauv:
Ntxiv rau cov raj, ND steel daim hlau kuj tseem siv los tsim cov kev txhawb nqa ruaj khov, tiv thaiv - cov phaj hnav, thiab cov phaj baffle. Piv nrog rau cov pa roj carbon steel, uas feem ntau kav tsuas yog 1.5-2 xyoos, ND steel tuaj yeem txuas ntxiv kev tiv thaiv kev tiv thaiv tag nrho lub neej los ntawm 2-3 zaug (txog 5-8 xyoo), ua rau muaj kev tu ncua ntau ntxiv thiab txo qis kev siv ntau zaus.
09CrCuSb puas tuaj yeem hloov stainless hlau (xws li 304 lossis 316L) kom txuag tau nqi?
Hauv qhov tshwj xeeb qis -kub, dilute sulfuric acid dew- taw tes ib puag ncig, 09CrCuSb ua tau zoo tshaj tus qauv austenitic stainless hlau, uas yog nquag ua rau thaj chaw pitting thiab kev ntxhov siab corrosion tawg hauv acidic, siab -chloride ib puag ncig.
Hloov mus rau 09CrCuSb tuaj yeem txo koj cov nqi kev yuav khoom los ntawm 50% mus rau 70% piv rau cov hlau tsis muaj steel thaum muab vaj huam sib luag lossis kev pabcuam zoo dua.
| Khoom siv | 0.5% H₂SO₄ Corrosion Rate (mm/xyoo) | Atmospheric Corrosion Rate (mm / xyoo, ib puag ncig kev lag luam) | Ntsej Tsuag Test (h rau liab xeb) | Hom Passive Film Stability | Relative Corrosion Resistance Index* |
|---|---|---|---|---|---|
| 09CrCuSb (ND hlau) | 0.02 – 0.05 | 0.10 – 0.30 | 200 – 500 h | Ruaj khov hauv SO₂ / acidic condensate | 3.0-5.0 × carbon hlau |
| Huab cua Steel (Corten A / B) | 0.20 – 0.60 | 0.02 - 0.10 (tom qab tsim patina) | 48 – 120 h | ruaj khov tsuas yog nyob rau hauv qhuav / ntub atmospheric voj voog | 2.0-4.0 × carbon hlau |
| Stainless hlau 304 | 0.01 – 0.03 | <0.01 | >1000 h | ruaj khov heev (Cr₂O₃ passive txheej) | 8.0-12.0 × carbon hlau |
| Stainless hlau 316 | 0.005 – 0.02 | <0.01 | >1500 h | Kev ruaj khov heev (Mo-ua kom cov yeeb yaj kiab ua tau zoo) | 10.0-20.0 × carbon hlau |
| Carbon Steel (20G siv) | 0.10 – 0.30 | 0.10 – 0.50 | 24 – 48 h | Tsis ruaj khov zaj duab xis passive | 1.0 (lub hauv paus) |
Puas yog 09CrCuSb yooj yim khoov thiab txheej txheem rau hauv serpentine raj bundles?
09CrCuSb nta qhov sib npaug ntawm cov pa roj carbon tsawg (Ceq Tsawg dua lossis sib npaug li 0.38%), xa cov txias txias zoo heev -bending thiab ductility kev ua tau zoo. Nws dhau tus qauv D=2a (bending mandrel txoj kab uas hla yog ob npaug ntawm cov yeeb nkab thickness) 180℃khoov kuaj yam tsis muaj qhov tawg, ua rau nws zoo tagnrho rau siab - ntom, me me - vojvoog serpentine raj dabtsi yog khoov.
Ntxiv rau kev muab cov khoom siv siab - zoo 09CrCuSb (ND Steel) boiler economizer hlab, peb kuj muab cov nqi hauv qab no - ntxiv cov kev pabcuam ua haujlwm:
• Tube Bending: CNC txias dabtsi yog khoov rau U- khoov, serpentine raj, thiab kev cai boiler raj sib dhos raws li cov neeg siv khoom kos duab.
• Tube End Processing: Precision txiav, beveling, chamfering, thiab kev npaj kawg kom ua tau zoo ntawm - qhov chaw vuam thiab kev teeb tsa.
• Vuam & Fabrication: Kev cai vuam thiab sib dhos ntawm economizer raj panels, raj bundles, thiab boiler Cheebtsam.
• Kev Tiv Thaiv Ntog: Txhaj tshuaj tua blasting, tiv thaiv- xeb roj txheej, thiab tiv thaiv lub hau kawg kom tiv thaiv corrosion thaum khaws cia thiab thauj.
Peb cov kev cai thiab ntawv pov thawj yuav tsum tau
Cov qauv siv tau: Ua tau raws li GB / T 3087, GB / T 5310, thiab GB / T 150.2 cov cai rau boiler thiab siab-cov kabmob.
Kev xa khoom: Kub- tiav lossis txias- kos cov raj seamless, nkag rau hauv cov xwm txheej zoo nrog cov chaw huv thiab sab nraud.
Corrosion kuj yuav tsum tau: Cov khoom yuav tsum muaj kev tiv thaiv zoo heev rau sulfuric acid dew point corrosion thiab muaj kev tiv thaiv corrosion 3-5 npaug siab dua li cov pa roj carbon steel nyob rau hauv qis - kub flue gas ib puag ncig.
Kev soj ntsuam yuav tsum tau ua: Txhua lub raj yuav tsum tau kuaj hydrostatic, kuaj ultrasonic (UT), thiab / lossis eddy tam sim no kuaj (ET) kom muaj kev ywj pheej los ntawm kev puas tsuaj.
Kev tsim thiab vuam yuav tsum tau: Haum rau txias dabtsi yog khoov thiab serpentine raj fabrication. Vuam tuaj yeem ua tau yam tsis muaj preheating nyob rau hauv ib txwm muaj, thiab cov hlau vuam yuav tsum ua tiav cov khoom siv sib piv nrog cov khoom siv niam txiv.
Cov ntaub ntawv xav tau: EN 10204 3.1 Daim Ntawv Pov Thawj Zeb Xeem (MTC) yuav tsum muab, suav nrog tus lej xov tooj cua sov, tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, qhov ntev, thiab cov ntaub ntawv tshuaj xyuas kom paub meej tag nrho.
09CrCuSb boiler raj yog muab los ntawm cov dej tsis zoo, tiv thaiv -corrosion ntim thiab tiv thaiv cov yeeb nkab kawg los tiv thaiv kev puas tsuaj thaum lub sijhawm thauj mus los. Kev xa khoom thoob ntiaj teb yog muaj los ntawm lub thawv lossis lub tsheb thauj khoom, nrog lub sijhawm xa khoom ntawm 7-15 hnub.
