Kev lag luam petrochemical ua haujlwm nyob rau hauv cov xwm txheej hnyav -kub siab, hloov pauv kub, thiab corrosive media-xav tau cov ntaub ntawv uas sib npaug ntawm cov qauv kev ncaj ncees, kev nyab xeeb, thiab kev ntseeg ntev ntev -. ASME SA612 steel phaj, siab -lub zog carbon-manganese- silicon alloy ua rawsASME SA612 / SA612M (sib npaug rau ASTM A612 / A612M),tau tshwm sim raws li qhov kev xaiv zoo tshaj plaws rau cov cuab yeej tseem ceeb xws li siab - cov reactors siab thiab lub tank cia. Nws qhov tshwj xeeb sib xyaw ua ke ntawm cov txiaj ntsig siab zog (Ntau dua lossis sib npaug ntawm 345 MPa), qis dua -kub toughness (-40℃cuam tshuam tsis kam), thiab weldability zoo zoo sib xws nrog petrochemical sector txoj cai nruj.
Raws li tus neeg muab khoom lag luam, GNEE muab SA612 steel daim hlau tsim kho rau kev siv petrochemical, ua kom muaj kev ua raws li cov qauv thoob ntiaj teb thiab kev ua haujlwm zoo hauv cov cheeb tsam hnyav.
SA612 Steel yog dab tsi?
SA612 (tseem hu ua A612)yog asiab-lub zog carbon-manganese- silicon steel phajtsim feem ntau rau welded siab hlab ntsha siv nyob rau hauv nruab nrab mus rau qis kub kev pab cuam. Nws ntsibASME / ASTM siab nkoj phaj specificationthiab tau txais dav hauv cov roj, roj, thiab petrochemical sectors.
Cov yam ntxwv tseem ceeb muaj xws li:
Tua hlaunrog nplua nplej rau kev txhim kho mechanical kev ua tau zoo.
High tensile thiab yield zog, ua kom cov phab ntsa nyias nyias thiab cov qauv sib dua.
Zoo toughness, txawm nyob rau nruab nrab / qis dua.
Weldability zoo heevnrog cov txheej txheem welding.
ASME BPVC txaisrau cov hlab ntsha uas tsis muaj kev kub ntxhov (Section VIII).
Mechanically, raug yield zog ntau dua los yog sib npaug rau ~ 345 MPa thiab tensile zog ~ 560-725 MPa, nyob ntawm thickness thiab kev kho cua sov.
Vim li cas SA612 Hlau yog qhov zoo tshaj plaws rau Petrochemical Equipment
Petrochemical txheej txheem (piv txwv li, catalytic cracking, hydrotreating, thiab liquefied gas cia) nthuav tawm cov cuab yeej rau siab tshaj 10 MPa thiab kub li ntawm -40℃mus rau 350 degree. SA612 steel hais txog cov kev cov nyom no los ntawm:
1. Siab -Lub Zog & Siab Ua Haujlwm
- Yield zog: Ntau dua los yog sib npaug rau 345 MPa (50 ksi) hla cov tuab (6mm-100mm), ua haujlwm zoo tshaj qhov nruab nrab-lub zog hloov xws li SA516 Gr.70 (Ntau dua lossis sib npaug rau 260 MPa).
- Tensile zog: 560-725 MPa, ua kom cov phab ntsa ntawm cov hlab ntsha nyias nyias thaum tuav cov qauv kev ruaj ntseg nyob rau hauv siab hauv siab-txo cov khoom siv thiab cov khoom hnyav.
- Kev ntsuas siab: Haum rau Chav Kawm 2500+ cov hlab ntsha siab, ua tau raws li qhov xav tau ntawm cov txheej txheem siab - siab petrochemical.
2. Superior Low-Tsub Toughness
- Impact Zog: Ntau dua los yog sib npaug ntawm 27 J ntawm -40℃(transverse test), tiv thaiv nkig tawg hauv cov ntawv siv kub (xws li, LPG / LNG cia, cryogenic sib cais units).
- Qhov kub thiab txias: Ua haujlwm ntseeg tau los ntawm -40℃mus rau 350 degree, npog tag nrho cov spectrum ntawm petrochemical txheej txheem.
3. Zoo Weldability & Corrosion Resistance
- Fully Killed Steel: Refined los ntawm LF (ladle refining) + VD (nqus degassing) kom txo cov impurities, kom ntseeg tau tias weld kev ncaj ncees thiab txo qhov kev pheej hmoo ntawm ncej-weld cracking.
- Tswj cov impurities: Tsawg phosphorus ( Tsawg dua lossis sib npaug li 0.035%) thiab sulfur ( Tsawg dua lossis sib npaug li 0.025%) cov ntsiab lus txhim khu kev tiv thaiv kev ntxhov siab corrosion cracking (SCC) tshwm sim los ntawm petrochemical media (xws li hydrogen sulfide, acidic compounds).
- Vuam Versatility: Tau tshaj SMAW, SAW, GTAW, thiab GMAW cov txheej txheem - tseem ceeb rau kev tsim cov khoom loj, cov reactors thiab cov tso tsheb hlau luam.
4. Ua raws li Petrochemical Standards
- Ua tau raws li ASME Tshooj VIII Division 1 (kev tsim lub nkoj siab) thiab API (American Petroleum Institute) cov cai, ua kom muaj kev lees paub thoob ntiaj teb hauv cov haujlwm petrochemical.
- Traceability: Tag nrho cov ntaub ntawv (EN 10204 3.1/3.2 daim ntawv pov thawj) rau cov tshuaj muaj pes tsawg leeg, txhua yam khoom, thiab kev kho cua sov- qhov tseem ceeb rau kev ua raws cai.
SA612 vs SA516 Gr.70 vsSA537 Cl.1
| Feature | SA612 hlau | TIAB SA 516 Gr.70 | TIAB SA 537 Cl.1 |
|---|---|---|---|
| Yield zog | Ntau dua lossis sib npaug li 345 MPa | Ntau dua lossis sib npaug li 260 MPa | Ntau dua lossis sib npaug li 345 MPa |
| Tsawg-Tsub Toughness | -40℃(27J) | -29℃(27J, qauv) | -45℃(27J) |
| Weldability | Zoo heev (tsis muaj preheating tsawg dua lossis sib npaug li 25mm) | Zoo (preheating rau ntau dua lossis sib npaug li 25mm) | Zoo (tom qab -weld kho cua sov yuav tsum tau) |
| Corrosion Resistance | Siab (tsawg P / S) | Nruab nrab | Siab |
| Tus nqi -Kev ua tau zoo | High (tsis muaj kev kho cua sov ntxiv) | Lower (tab sis qis zog) | Siab dua (Q & T kho cua sov) |
| Petrochemical Siv Case | Siab - cov reactors siab, LPG tanks | Tsawg- cov tso tsheb hlau luam siab, cov khoom siv hluav taws xob hloov pauv | Nuclear- qib nkoj |
FAQs Txog SA612 Hlau hauv Petrochemical Applications
Q1: SA612 steel puas tuaj yeem tiv taus hydrogen sulfide (H₂S) corrosion hauv petrochemical reactors?
A: Yog. SA612 tsis tshua muaj leej faj (Less tshaj los yog sib npaug rau 0.025%) thiab phosphorus (Less tshaj los yog sib npaug rau 0.035%) cov ntsiab lus, ua ke nrog tswj cov khoom seem, txo qis rau H₂S-induced SCC. Rau huab cua H₂S ib puag ncig, GNEE muaj kev hloov kho kev cai alloy (xws li, ntxiv chromium) raws li kev thov.
Q2: Dab tsi yog qhov siab tshaj plaws tank peev xwm ua tiav nrog SA612 steel?
A: SA612 yog tsim rau tso tsheb hlau luam txog 50,000 m³ lossis loj dua. Nws lub zog siab tso cai rau cov phab ntsa nyias nyias, txo cov khoom hnyav thiab ua kom muaj qhov loj dua yam tsis muaj kev cuam tshuam cov qauv kev ntseeg siab.
Q3: Puas yog SA612 xav tau tom qab-weld kho cua sov (PWHT) rau cov khoom siv petrochemical?
A: Rau feem ntau daim ntawv thov (thickness Tsawg dua los yog sib npaug rau 25mm), PWHT tsis tas yuav tsum tau vim SA612 zoo heev weldability. Rau cov phaj tuab (Ntau dua lossis sib npaug ntawm 26mm) lossis siab - cov khoom siv kev ntxhov siab, PWHT (600-650 degree) raug pom zoo kom tshem tawm cov kev ntxhov siab uas seem-GNEE muab PWHT kev taw qhia rau ASME cov qauv.
Q4: GNEE ua li cas thiaj li muaj peev xwm taug qab rau SA612 steel hauv cov haujlwm petrochemical?
A: Txhua lub phaj SA612 tau cim nrog tus lej kub tshwj xeeb, txuas nrog cov ntaub ntawv dav dav (cov ntaub ntawv qhia txog tshuaj lom neeg, cov txiaj ntsig kev ntsuas tshuab, NDT daim ntawv pov thawj). Peb muab EN 10204 3.2 daim ntawv pov thawj rau cov ntawv thov tseem ceeb, kom ntseeg tau tias tag nrho traceability ntawm smelting mus rau kev xa khoom.
Xaus
SA612 steel phaj yog ib qho kev ua si - hloov pauv rau kev lag luam petrochemical, muab kev sib xyaw zoo tshaj plaws ntawmkev kub siab ua haujlwm, qis-kub toughness, thiab weldabilityrau siab -siab reactors thiab cia tanks. Nws ua raws li cov qauv thoob ntiaj teb (ASME, API) thiab tus nqi- ua tau zoo ua rau nws cov khoom xaiv rau cov chaw petrochemical nrhiav kev txhim kho kev nyab xeeb, txo kev saib xyuas, thiab ua kom zoo dua cov khoom siv.
GNEE Steel kuj muab ntau yam boilers thiab siab nkoj steel daim hlau, xws li A204 Qib B, A515 Qib 70, A537 Chav Kawm 1, SA387 Qib 11 Chav Kawm 1, P265GH, S537 Chav Kawm 2, P355Q, P275N, P355N, P69R lwm yam yog tias koj xav paub ntau ntxiv, steel daim hlau, koj tuaj yeem hu rau kev sab laj tus xovtooj ntawm +8615824687445 lossis xa email rauru@gneesteelgroup.com.Koj tuaj yeem sab laj nrog peb, thiab peb txaus siab los teb koj cov lus nug.
| Lwm cov hlau phaj los ntawm GNEE | ||||
| Lub npe | Khoom siv | Specification (hli) | Tos | Lus ceeb toom |
| Clad steel phaj | P265GH+410,S355JR+410,A516Gr70+316, A537CL1+304L,Q235B+304L,Q345B+304, A516Gr70(NACE)+410,A537CL1+904L, A537CL1+316L,A516Gr70+304L,A537CL1+304 ,A516Gr70+410,A516Gr70+904L |
2-300mm (raws li phaj), 1-50mm (Composited phaj) | / | UT, AR, TMCP.Normalized, Quenched thiab Tempered, Z Direction Test, Charpy V-Ntch impact TestThe Third Party Test, Coated or Shot Blasting and Painting. |
| Tsawg Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| Pressure Vessel Plate | A204 Qib B, A515 Qib 70, A537 Chav Kawm 1, SA387 Qib 11 Chav Kawm 1, P265GH, S537 Chav Kawm 2, P355Q, P275N, P355N, P690Q, Q345R, | 3 - 300 | 8650 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| High-Plate muaj zog | A514 Qib F, A572 Qib 50, A588 Qib A, S355JR, S690Q, SS400, S690QL, Q345B, Q345E | 8 - 120 | 3086.352 | Quenched thiab tempered |
| Hnav-Resistant Phaj | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched thiab tempered |
| Nkoj Phaj | ABS AH32, ABS DH32, ABS EH32, ABS FH36, ASTM A131 A, ASTM A131 EH32, ASTM A131 AH36, CCS A, CCS AH32, LR AH32, DNV A36, BV AH32 |
8 - 200 | 2853.621 | Kub dov, normalized, kub dov tswj dov, quenched thiab tempered + toughness thiab brittleness |