A537 Chav Kawm 3yog ib hom carbon-manganese-silicon steel phaj tsim los siv rau hauv cov ntawv thov ntawm lub nkoj siab qhov chaw siab kub thiab kev siv vuam zoo yuav tsum tau ua. Nws yog cov hlau tsis zoo thiab tempered uas muaj kev sib xyaw ua ke ntawm lub zog siab, toughness, thiab tsis kam ua rau tawg tawg, ua rau nws tsim nyog rau boilers, cia tank, thiab lwm yam siab - muaj cov qauv. Cov khoom siv yog tsim los ua kom yooj yim fabricated siv cov txheej txheem vuam txheej txheem, thiab nws tswj nws cov khoom siv kho tshuab txawm tias tom qab raug rau cov thermal cycles koom nrog hauv kev tsim khoom thiab kev ua haujlwm.
Tshuaj muaj pes tsawg leeg
|
Element |
Kev sib xyaw (%) |
|---|---|
|
Cov pa roj carbon (C) |
0.24 max |
|
Manganese (Mn) |
0.70-1.35 (≤40mm thickness) 1.00-1.60 (>40 hli thickness) |
|
Phosphorus (P) |
0.035 max |
|
Sulfur (S) |
0.035 max |
|
Silicon (Si) |
0.15-0.50 |
|
Copper (Cu) |
0.35 max (yog tias muaj) |
|
Nickel (Ni) |
0.25 max (yog tias muaj) |
|
Chromium (Cr) |
0.25 max (yog tias muaj) |
|
Molybdenum (hli) |
0.08 max (yog tias muaj) |
Mechanical Properties
|
Khoom |
Tus nqi |
|---|---|
|
Tensile zog |
75-95 ksi (515-655 MPa) (≤65mm) 70-90 ksi (485-620 MPa) (>65-100mm) 65-85 ksi (450-585 MPa) (>100-150 hli) |
|
Yield zog |
55 ksi (380 MPa) min (≤65mm) 50 ksi (345 MPa) min (>65-100mm) 40 ksi (275 MPa) min (>100-150 hli) |
|
Elongation (hauv 50mm) |
22% min (≤100mm) 20% min (>100 hli) |
|
Kev txo qis hauv cheeb tsam |
Tsis tau teev tseg, feem ntau siab |
Cov ntawv thov tseem ceeb
Cov nkoj siab hauv Petrochemical Kev Lag Luam:
Nws yog dav siv nyob rau hauv kev tsim cov hlab ntsha siab rau roj refining, chemical processing, thiab natural gas kho. Cov hlab ntsha no feem ntau yog siv los khaws, thauj, lossis hnov mob nrog ntau yam xov xwm xws li roj crude, roj refined, tshuaj reagents, thiab natural gas. Vim nws cov khoom siv zoo heev thiab cov khoom siv weldability, cov khoom siv tuaj yeem tiv taus qhov kub thiab txias hloov thaum lub sijhawm ua haujlwm thiab kev thauj mus los ntawm cov khoom siv petrochemical, ua kom muaj kev nyab xeeb thiab ruaj khov ntawm cov khoom siv.
Boiler thiab Thermal Power Equipment:
Nws yog ib qho khoom siv zoo tshaj plaws rau kev tsim boiler nruas, lub taub hau lub taub hau, thiab lwm yam khoom tseem ceeb hauv thermal fais fab nroj tsuag thiab muaj boilers. Cov Cheebtsam no yuav tsum tau ua kom siab siab -kub siab rau lub sijhawm ntev. Cov hlau muaj qhov zoo siab - qhov kub thiab txias zog, tuaj yeem tiv taus thermal qaug zog los ntawm kev rov ua cua sov thiab cua txias, thiab tiv thaiv qhov tshwm sim ntawm cov kab nrib pleb thiab lwm yam tsis ua hauj lwm, yog li lav qhov kev ua haujlwm ntawm boiler systems.
Cia Tank rau Hazardous thiab Tsis yog -Hardous Media:
Nws yog feem ntau siv los ua lub tank loj rau khaws cov khoom phom sij xws li cov roj av liquefied, cov kuab tshuaj lom neeg, thiab cov kua roj corrosive, nrog rau cov khoom tsis zoo xws li dej thiab roj. Cov khoom siv tau zoo ua rau cov pob txha tawg thiab kev ua haujlwm zoo tshaj plaws kom ntseeg tau tias cov tso tsheb hlau luam muaj lub zog txaus thiab kev sib khi, tsis txhob xau ntawm cov ntaub ntawv khaws cia thiab muaj peev xwm muaj kev nyab xeeb.
Marine thiab Offshore Engineering Equipment:
Hauv kev tsim kho roj thiab roj hauv hiav txwv thiab ntug dej hiav txwv, nws yog siv los tsim cov chaw sab nrauv, cov kav dej hauv qab, thiab nkoj - cov nkoj loj. Cov cuab yeej siv no yuav tsum tau tiv taus qhov hnyav marine ib puag ncig xws li ntsev siab, av noo, thiab qhov kub thiab txias sib txawv. Cov hlau muaj peev xwm tswj tau cov khoom siv kho tshuab ruaj khov nyob rau hauv cov xwm txheej zoo li no, tiv thaiv corrosion thiab kev ntxhov siab corrosion tawg, thiab yoog mus rau qhov chaw ua haujlwm nyuaj ntawm dej hiav txwv.
Cov Cai Thov
Qhov kub thiab txias:
Nws yog qhov tsim nyog rau kev pabcuam hauv qhov kub ntawm -29℃txog 593℃. Nyob rau hauv cov khoom no, cov khoom muaj peev xwm tuav tau zoo zog, toughness, thiab ductility. Thaum qhov kub siab tshaj qhov siab tshaj qhov txwv, cov khoom siv lub zog ntawm qhov kub thiab txias yuav txo qis, thiab thaum qhov kub thiab txias qis dua qhov kev txwv qis, muaj kev pheej hmoo ntawm nkig tawg, yog li nws tsis haum rau kev siv nyob rau hauv huab cua kub ib puag ncig tshaj li qhov tau teev tseg.
Kev xav tau siab:
Nws yog tsim los rau nruab nrab thiab siab - kev siv siab. Nws tuaj yeem tiv taus kev ua haujlwm siab ntawm cov hlab ntsha siab thiab cov khoom siv cuam tshuam raws li kev ua raws li cov qauv tsim thiab cov qauv tsim tshwj xeeb. Lub siab tshwj xeeb- lub peev xwm yuav tsum tau txiav txim siab raws li qhov tuab ntawm cov khoom, cov qauv tsim ntawm cov cuab yeej siv, thiab kev pabcuam ib puag ncig, thiab nws yuav tsum tsis pub dhau lub siab txwv los ntawm cov khoom siv.
Nruab nrab Compatibility:
Nws muaj kev sib raug zoo nrog feem ntau cov roj av, tshuaj lom neeg, thiab cov khoom siv hluav taws xob. Txawm li cas los xij, nws tsis tsim nyog siv rau hauv cov chaw muaj zog corrosive media xws li concentrated sulfuric acid, concentrated hydrochloric acid, thiab muaj zog oxidizing media rau lub sijhawm ntev. Nyob rau hauv xws li ib puag ncig, cov khoom yuav raug kev txom nyem loj heev corrosion, uas yuav txo tau nws cov yam ntxwv lub zog thiab kev pab lub neej. Yog tias tsim nyog siv nws nyob rau hauv ib puag ncig corrosive, coj los tiv thaiv - kev ntsuas corrosion (xws li txheej, hauv ob sab phlu) yuav tsum tau ua.
Fabrication thiab Vuam tej yam kev mob:
Nws yuav tsum tau ua raws li cov txheej txheem fabrication thiab vuam txheej txheem thaum lub sij hawm ua thiab manufacturing. Cov txheej txheem vuam yuav tsum tsim nyog los ntawm kev xeem cov txheej txheem vuam, thiab cov vuam yuav tsum tuav cov ntawv pov thawj tsim nyog. Tom qab welding, post-weld heat treatment (xws li kev ntxhov siab annealing) feem ntau yuav tsum tau tshem tawm cov welding residual kev nyuaj siab, txhim kho lub toughness ntawm vuam thiab tshav kub- thaj tsam cuam tshuam, thiab tiv thaiv qhov tshwm sim ntawm vuam tawg.
Kev Pabcuam Ib puag ncig xav tau:
Nws yog tsim rau siv nyob rau hauv atmospheric, marine, thiab kev lag luam ib puag ncig. Nws yuav tsum zam kom tsis txhob raug ntev - lub sij hawm raug rau ib puag ncig hnyav xws li hluav taws xob muaj zog, muaj zog vibration, thiab feem ntau cuam tshuam. In addition, regular inspection and maintenance are required during service to detect potential defects (such as cracks, corrosion) in time and take corresponding disposal measures to ensure the safe and reliable operation of the equipment.
ua
Kev npaj khoom siv
Cov phaj hlau raug tshuaj xyuas rau cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab qhov chaw saum npoo kom ntseeg tau tias lawv ua tau raws li ASTM A537 cov cai. Cov phaj yuav raug ntxuav kom tshem tawm cov roj, xeb, thiab nplai, uas tuaj yeem cuam tshuam rau vuam thiab ua kom zoo.
Txiav thiab Blanking
Cov phaj raug txiav rau hauv qhov ntau thiab tsawg uas siv plasma, nplaim taws, lossis laser txiav. Cov txheej txheem txiav yuav tsum tau tswj kom tsis txhob muaj cua sov ntau dhau, uas tuaj yeem ua rau ntug hardening lossis microcracking. Txiav ntug yog xyuas kom smoothness thiab tsis muaj notches.
Tsim thiab Shaping
Cov phaj yog tsim rau hauv qhov xav tau geometry siv xovxwm braking, dov, lossis lwm txoj kev tsim. Cov txheej txheem kub yog feem ntau khaws cia nyob rau hauv qhov nruab nrab kom tiv thaiv kom tsis txhob mob khaub thuas - ua haujlwm embrittlement lossis dhau caij nplooj ntoos hlav. Cov duab tsis yooj yim yuav xav tau ntau txoj hauv kev nrog kev tshuaj xyuas nruab nrab.
Vuam
A537 Chav Kawm 3 yog nkag tau yooj yim siv cov txheej txheem xws li SMAW, GMAW, thiab SAW. Preheating tuaj yeem siv rau cov ntu tuab kom txo tau qhov kev pheej hmoo ntawm hydrogen-induced cracking. Welded pob qij txha tau ua tib zoo tswj kom muaj cua sov nkag, thiab tom qab-weld kev kho cua sov feem ntau yog ua los txo cov kev ntxhov siab thiab txhim kho cov tawv nqaij.
Kev kho cua sov
Tom qab vuam los yog tsim, kev ntxhov siab nyem annealing feem ntau siv los txhim kho qhov ruaj khov thiab txo qhov muaj peev xwm tawg. Qhov kub thiab txias tus nqi yog tswj los tswj cov hlau lub zog thiab toughness sib npaug.
Kev kho deg thiab ua tiav
Qhov kawg qhov chaw yog npaj los ntawm kev sib tsoo, blasting, los yog pleev xim los txhim kho corrosion kuj thiab zoo li. Rau kev siv lub nkoj siab, weld seams yog hauv av du kom tsis txhob muaj kev ntxhov siab.
Kev tshuaj xyuas thiab kuaj
Kev tshuaj xyuas zaum kawg suav nrog kev kuaj pom, kuaj ultrasonic, kuaj hluav taws xob, thiab kev txheeb xyuas cov cuab yeej cuab tam. Cov kev ntsuam xyuas no xyuas kom meej tias cov khoom ua tiav tsis muaj qhov tsis xws luag thiab ua tau raws li cov qauv kev nyab xeeb uas yuav tsum tau muaj rau kev siab - muaj cov kev pabcuam.
Tiv tauj peb ntawm beam@gneesteelgroup.com rau tus nqi, kev txhawb nqa, lossis kev daws teeb meem. Peb yeej ib txwm npaj los txhawb koj qhov project.
Dab tsi thickness ntau yog muaj rau A537 Class 3 daim hlau?
A537 Class 3 daim hlau yog 6-150mm tuab. Cov phaj tuab xav tau kev kho cua sov tshwj xeeb. Ntau yam thicknesses sib npaug zog, qhov hnyav thiab tus nqi rau cov hlab ntsha siab, boilers thiab tso tsheb hlau luam.
Dab tsi yog cov ntawv thov ntawm A537 Class 3 hauv kev lag luam roj thiab roj?
Hauv cov roj thiab roj, A537 Chav Kawm 3 ua rau cov hlab ntsha siab, cov tso tsheb hlau luam thiab cov kav dej. Nws suits refineries, petrochemical nroj tsuag thiab offshore platforms rau siab - siab hydrocarbon tuav.
Cov kev ntsuam xyuas zoo li cas ntawm A537 Class 3 steel?
A537 Chav Kawm 3 tau txais tshuaj ntsuam xyuas, tensile, khoov, cuam tshuam kev kuaj thiab tshuaj xyuas ultrasonic. Cov kev ntsuam xyuas no txheeb xyuas qhov muaj pes tsawg leeg, lub zog, tawv thiab qhov tsis xws luag -dawb zoo rau ASTM specs.
Dab tsi yog qhov kev txiav txim siab raug txiav txim siab rau A537 Class 3 steel?
Fabricate A537 Chav Kawm 3 nrog tswj vuam, preheating thiab cua sov input. Ntug npaj thiab kev tswj cua txias rau cov phaj tuab. Ua raws li kev ntxuav thiab tshuaj xyuas kom ntseeg tau cov qauv kev nyab xeeb.
Dab tsi tsis yog -kev kuaj kev puas tsuaj (NDT) txoj kev siv ntawm A537 Class 3 welds?
A537 Class 3 weld NDT txoj kev: ultrasonic, radiographic, magnetic particle thiab kua penetrant kuaj. Cov no kuaj pom qhov tsis zoo ntawm sab hauv / saum npoo, ua kom muaj kev ncaj ncees ntawm kev lag luam hauv kev lag luam.
Qhov siab tshaj plaws ua haujlwm kub rau A537 Class 3 steel yog dab tsi?
A537 Class 3's max nruam khiav hauj lwm kub yog ~ 427 degree. Nyob rau hauv tas li ntawd, lub zog thiab creep kuj poob. Alloy steels yog nyiam rau siab dua -kev siv kub.
A537 Class 3 ua haujlwm li cas ntawm qhov kub thiab txias?
A537 Chav Kawm 3 khaws cov kev cuam tshuam zoo ntawm qhov kub thiab txias, tiv thaiv cov pob txha tawg. Charpy V-cov ntawv ntsuas ntsuas kom paub meej tias nws tsim nyog rau cov ntawv thov siv roj av hauv arctic thiab liquefied.
Cov txheej txheem vuam dab tsi tsim nyog rau kev koom nrog A537 Class 3 steel?
A537 Class 3 tuaj yeem txuas ntawm SMAW, GMAW, FCAW thiab SAW. Tsawg preheating yog xav tau, tab sis cov ntu tuab yuav tsum tau tswj qhov kub thiab txias. Cov txheej txheem tsim nyog kom muaj zog, tus qauv- ua raws li cov welds.
Dab tsi preheating thiab interpass kub tau pom zoo rau A537 Chav Kawm 3?
Rau A537 Chav Kawm 3, preheat 100-150℃rau daim hlau tshaj 25mm lossis txias vuam. Tuav qhov sib cuam tshuam zoo ib yam los tiv thaiv kev tawg thiab khaws cov tawv nqaij hauv thaj chaw uas muaj kev kub ntxhov.