A537 Chav Kawm 1yog ib qho qub, cua sov- kho carbon-manganese- silicon steel phaj (ASTM A537/ASME SA537) tshwj xeeb tsim los rau fusion-welded boilers, siab hlab ntsha, thiab tso tsheb hlau luam uas xav tau lub zog siab thiab zoo heev tornity ntawm nruab nrab kub, muab superior zog 5 MP4 8 yields 3 teniles tensile) piv rau cov qib txheem zoo li A516.
Specifications:
| Txheem: | ASTM A537 Cov Lus Qhia Tshwj Xeeb |
|---|---|
| Dav: | 1000mm-4500mm |
| Thickness: | 5mm - 150 hli |
| Ntev: | 3000mm - 18000 hli |
| Impact tested: | -52 ° C |
| Txheej txheem: | Kub-Rolled (HR) |
Mechanical Properties
|
Qib |
Yield zog |
Tensile zog |
Elongation hauv 2 " |
Elongation hauv 8 " |
|---|---|---|---|---|
|
A537 Chav Kawm 1 |
50 |
70 - 90 |
22 |
18 |
Tshuaj muaj pes tsawg leeg
|
C |
Mn 1) |
P 2) |
S 2) |
Si |
Cu |
Ni 1) |
Cr |
Mo |
|---|---|---|---|---|---|---|---|---|
|
0.24 |
1.60 |
0.020 |
0.010 |
0.50 |
0.35 |
0.25 |
0.25 |
0.080 |
qhov zoo
Zoo Weldability:
Nws yog qhov sib xws nrog cov txheej txheem vuam ntau. Nrog cov txheej txheem preheating thiab tom qab-weld kho cua sov, nws zoo tiv thaiv cov kab nrib pleb thiab ua kom lub zog thiab nruj ntawm cov pob qij txha, txo cov kev pheej hmoo thiab nqi.
Balanced Mechanical Properties:
Nws koom nrog lub zog tensile nruab nrab thiab zoo heev cuam tshuam toughness, ua rau nws tiv taus ntev - lub sij hawm neeg kho tshuab loads thiab kub hloov pauv yam tsis muaj deformation los yog tawg, ua kom cov cuab yeej ua haujlwm ruaj ntseg.
Txhim khu kev ntseeg siab -Qhov kub thiab txias:
Nyob rau hauv qhov pom zoo ua haujlwm kub ntau yam (-29℃txog 343 degree), nws cov khoom siv kho tshuab nyob ruaj khov, tsis muaj qhov pom tseeb lub zog attenuation, ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv nruab nrab thiab kub siab.
Tus nqi siab -Kev ua tau zoo:
Piv nrog rau siab - alloy siab nkoj steels, nws muaj cov khoom siv qis dua thiab cov nqi ua haujlwm thaum ua tiav cov kev xav tau yooj yim, muab kev daws teeb meem rau kev tsim khoom loj.
Muaj zog Environmental Adaptability:
Nws yog qhov tsim nyog rau cov xov xwm tsis muaj zog corrosive thiab ntau txoj hauv kev ua haujlwm (txiav, sib sau, vuam), thiab tuaj yeem siv rau ntau lub lag luam xws li roj thiab roj, petrochemical, thiab hluav taws xob tsim, nrog rau kev siv dav.
ua
Txiav thiab Blanking:
Xaiv cov kev txiav tsim nyog xws li kev txiav cov ntshav, cov nplaim hluav taws xob lossis cov tshuab shearing raws li cov tuab ntawm A537 Class 1 steel daim hlau, thiab txiav lawv kom raug rau qhov ntau thiab tsawg uas ua tau raws li cov qauv tsim. Thaum lub sij hawm tus txheej txheem, nws yog ib qho tseem ceeb kom paub meej tias tej qhov chaw yog du thiab tiaj, tsis muaj kab nrib pleb, burrs los yog slag inclusions. Lub caij no, nruj me ntsis kom tsis txhob muaj cua sov hauv zos los ntawm kev ua haujlwm tsis raug, vim qhov no yuav ua rau cov khoom siv sab hauv thiab cov khoom siv kho tshuab puas.
tsim:
Txais cov txheej txheem txias (piv txwv li, khoov, stamping) rau daim hlau nyias lossis kub sib sau rau cov duab nyuaj raws li cov qauv khoom tshwj xeeb. Rau cov hlau phaj nrog thickness ntau tshaj 12 hli, preheating rau 60-150℃yog pom zoo kom txo tau txoj kev nyuaj siab, tsis txhob yas deformation los yog txias kab nrib pleb, thiab xyuas kom meej cov tsim workpiece raws li qhov tseeb thiab cov duab yuav tsum tau.
Vuam:
Xaiv cov khoom siv vuam txuam nrog A537 Chav Kawm 1 (xws li E7018 qis-hydrogen electrodes) thiab cov txheej txheem tsim nyog xws li phau ntawv arc vuam lossis submerged arc vuam. Ua preheating raws li cov phaj tuab, ruaj khov tswj vuam tam sim no thiab qhov hluav taws xob kom tsis txhob muaj qhov tsis xws luag, thiab ua tom qab-weld heat treatment (PWHT) ntawm qhov ntsuas kub kom tshem tawm cov kev ntxhov siab thiab ua kom lub zog sib koom ua ke.
Post{0}}Kev ua haujlwm:
Sib tsoo weld seams thiab workpiece nto nrog cov cuab yeej tshaj lij kom ua tiav qhov xav tau flatness thiab roughness. Tshem tawm cov nplai oxide saum npoo thiab xeb los ntawm kev txhaj tshuaj blasting lossis pickling, ces huv si huv si thiab qhuav lub workpiece. Rau cov khoom siv nyob rau hauv ib puag ncig corrosive, siv los tiv thaiv- cov coatings los yog hauv ob sab phlu los txhim kho lub neej kev pab.
Kev soj ntsuam zaum kawg:
Ua qhov kev tshuaj ntsuam xyuas qhov muag ua ntej txhawm rau kuaj xyuas qhov tsis xws luag. Tom qab ntawd ua qhov tsis yog- kev ntsuas kev puas tsuaj nrog rau kev ntsuas ultrasonic rau qhov tsis zoo sab hauv thiab kuaj hluav taws xob rau qhov zoo ntawm vuam. Siv cov qauv rau kev ntsuas cov cuab yeej cuab tam (tensile, cuam tshuam) kom paub meej cov ntsuas raws li ASTM A537 tus qauv. Tsuas yog cov khoom dhau tag nrho cov kev tshuaj ntsuam xyuas yog tsim nyog rau kev xa khoom.
daim ntawv thov
Cov nkoj siab:
Nws yog cov khoom siv tseem ceeb rau kev tsim cov welded siab hlab ntsha, tshwj xeeb tshaj yog cov siv hauv kev tshawb nrhiav roj thiab roj, kev ua petrochemical, thiab kev tsim tshuaj. Cov khoom lag luam muaj xws li tso tsheb hlau luam rau cov roj crude, roj av, thiab tshuaj reagents, nrog rau cov hlab ntsha thiab cov khoom sib cais uas ua haujlwm hauv nruab nrab siab. Nws zoo toughness thiab siab tsis kam ua kom muaj kev nyab xeeb ntawm cov hlab ntsha nyob rau hauv ntev -lub sij hawm thauj khoom-cov kabmob.
Boiler Cheebtsam:
Haum rau kev tsim cov khoom tseem ceeb ntawm cov boilers thiab thermal fais fab boilers, xws li boiler nruas, dej phab ntsa, thiab superheater headers. Cov Cheebtsam no yuav tsum tau tiv taus qhov kub thiab txias thiab siab hloov mus ntev, thiab A537 Chav Kawm 1 qhov zoo heev - qhov kub thiab txias thiab weldability tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm boiler systems.
Roj thiab Gas Pipeline Accessories:
Siv nyob rau hauv kev tsim cov kav dej fittings, xws li lub luj tshib, tees, thiab flanges, rau onshore thiab offshore roj thiab roj xa mus pipelines. Cov khoom siv no yog nyob rau hauv ib puag ncig ua haujlwm hnyav, suav nrog kev hloov pauv ntawm sab nraum zoov thiab nruab nrab corrosion, thiab cov khoom siv dav dav ntawm cov hlau tuaj yeem ua kom muaj kev nruj thiab kev ncaj ncees ntawm cov kav dej sib txuas.
Lwm Cov Kev Lag Luam:
Tsis tas li ntawd, nws kuj tseem siv rau hauv kev tsim cov khoom siv rau cov khoom siv hluav taws xob (xws li roj turbine casings), marine engineering cov cuab yeej, thiab cov tshuab hnyav. Nws yog tshwj xeeb tshaj yog haum rau lub sij hawm uas yuav tsum tau vuam thiab cov qauv yuav tsum tau dais tej yam siab thiab tej yam loads.
Thov kom muaj kev tshaj lij rau A537 Chav Kawm 1 los ntawm GNEE Steel.
A537 Class 1 puas tuaj yeem galvanized?
Yog lawm, A537 Chav Kawm 1 tuaj yeem kub -dip galvanized rau kev tiv thaiv corrosion. Txawm li cas los xij, galvanizing tom qab fabrication yog qhov zoo dua, vim qhov kub siab thaum lub sij hawm galvanizing tuaj yeem cuam tshuam rau cov khoom siv kho tshuab.
Puas yog A537 Class 1 tau txais kev pabcuam hydrogen?
A537 Chav Kawm 1 tuaj yeem siv rau hauv kev pabcuam hydrogen yog tias nws ua tau raws li cov cai ntawm hydrogen embrittlement. Kev kho cua sov kom zoo thiab cov txheej txheem qis hydrogen vuam yog qhov tseem ceeb los tiv thaiv embrittlement.
Dab tsi yog cov khoom tseem ceeb ntawm A537 Class 1?
Cov khoom tseem ceeb muaj xws li carbon (0.17-0.23%), manganese (1.10-1.50%), phosphorus (max 0.035%), sulfur (max 0.035%), silicon (0.15-0.30%), thiab me me ntawm tooj liab, nickel, chromium, thiab molybdenum.
Qhov tsawg kawg nkaus tawm lub zog ntawm A537 Chav Kawm 1 yog dab tsi?
Qhov tsawg kawg nkaus tawm lub zog ntawm A537 Chav Kawm 1 yog 345 MPa (50 ksi). Qhov no ua kom cov khoom muaj peev xwm tiv taus qhov siab tsis tas yuav deformation, tseem ceeb rau kev nyab xeeb ntawm cov hlab ntsha.
Dab tsi ncej-weld heat treatment (PWHT) yog siv rau A537 Class 1?
PWHT rau A537 Chav Kawm 1 feem ntau cuam tshuam nrog kev ntxhov siab ntawm 595-650℃(1100-1200℃F), tuav lub sijhawm txaus, tom qab ntawd txias maj mam. Qhov no relieves residual stresses thiab txhim kho weld cheeb tsam toughness.
A537 Chav Kawm 1 puas tuaj yeem ua tau txias-?
A537 Chav Kawm 1 tuaj yeem txias - tsim nrog cov txheej txheem tsim nyog. Nws muaj qhov zoo ductility, tab sis hnyav hnyav hnyav tuaj yeem xav tau tom qab-weld kev kho cua sov kom txo tau cov kev ntxhov siab thiab rov ua kom tawv.
Lub hardness txwv ntawm A537 Class 1 yog dab tsi?
A537 Chav Kawm 1 feem ntau muaj qhov siab tshaj plaws Brinell hardness (HB) ntawm 235. Qhov ntau tshaj qhov no yuav qhia tau tias hardness ntau dhau, txo qhov tawv thiab ua rau muaj kev pheej hmoo ntawm kev tawg.
Qhov modulus ntawm elasticity ntawm A537 Class 1 yog dab tsi?
A537 Chav Kawm 1 muaj cov qauv ntawm elasticity txog 200 GPa (29 × 10⁶ psi) ntawm chav tsev kub. Qhov txiaj ntsig no zoo ib yam nrog rau feem ntau cov pa roj carbon steel, pab cov txheej txheem thiab kev ntsuas kev ntxhov siab.
A537 Class 1 puas tuaj yeem siv rau hauv cov ntawv thov cryogenic?
Tsis yog, A537 Chav Kawm 1 tsis haum rau kev pabcuam cryogenic (hauv qab -29℃/-20℃F). Nws cov tawv tawv txo qis qis dua, yog li cov hlab ntsha cryogenic xav tau cov hlau tshwj xeeb xws li A350 LF2.
Dab tsi yog qhov siab tshaj carbon cov ntsiab lus tso cai hauv A537 Chav Kawm 1?
Qhov siab tshaj carbon cov ntsiab lus hauv A537 Chav Kawm 1 yog 0.23%. Tswj cov pa roj carbon monoxide ua kom zoo weldability thiab zam dhau hardness, uas tuaj yeem txo qhov toughness.
Dab tsi yog daim ntawv thov ntawm A537 Class 1 hauv kev lag luam roj thiab roj?
Nyob rau hauv cov roj thiab roj, A537 Class 1 yog siv rau onshore thiab offshore siab hlab ntsha, cov khoom siv lub taub hau, cia tso tsheb hlau luam rau cov roj crude thiab natural gas, thiab pipeline Cheebtsam tswj cov kev kub ntxhov.