SA 387 Gr. 11 Cl . 2yog ib qho chromium-molybdenum alloy steel tsim rau siab-kub siab cov hlab ntsha.ASME SA 335 Gr. 11 CL 2 Alloy Steel Phaj yog tsim rau khoov, flanging, thiab zoo sib xws ua haujlwm, thiab rau fusion vuam. Txawm li cas los xij, cov khoom no raug soj ntsuam nruj heev los ntawm peb pab neeg muaj peev xwm siv cov txuj ci sib txawv xws li kev sib tw lossis kev sib tw ntev ntev, kev sib tw flattening, thiab hardness los yog khoov xeem thiab lwm yam. Tsis tas li ntawd, Alloy Steel Qib 11 CL 2 Phaj muaj cov yam ntxwv zoo sib xws nrog nws cov rigidity, yield zoo, hnav tsis kam, durability, thiab hnav tsis kam. Peb muab lawv nyob rau hauv cov kev ntsuam xyuas sib txawv uas ua tau raws li qhov xav tau ntawm cov neeg siv khoom. Tiv tauj peb hnub no kom thov kev kwv yees dawb!
SA387 Gr 11 CL 2 Steel Phaj Chemical Composition
| C | Mn | P | S | Si | Cr | Mo |
| 0.04 - 0.17 | 0.35 - 0.73 | 0.035 | 0.035 | x 0.44 - 0.86 | 0.94 - 1.56 | 0.40 - 0.7 |
SA387 Qib 11 Chav Kawm 2 Plate Mechanical Properties
| A387 / SA387 Qib 11 | Chav Kawm 1 | Chav kawm 2 |
| Tensile zog (ksi) | 60-85 | 70-90 |
| Tensile zog (MPa) | 415-585 | 485-620 |
| Yield zog (ksi) | 35 | 45 |
| Yield zog (MPa) | 240 | 310 |
| Elongation hauv 50mm (%) | 19 | 18 |
| Elongation hauv 50mm (%) | 22 | 22 |
ua
SA 387 Qib 11 Chav Kawm 2 yog 1.25Cr-0.5Mo tshav kub-resistant alloy steel phaj siv rau siab- kub thiab siab - siab siab siv nkoj. Nws cov txheej txheem yuav tsum ua raws li ASME SA-387 / SA-387M kom ntseeg tau tias muaj zog siab-kub kub zoo heev, tawv, thiab tiv thaiv hydrogen nres.
Cov txheej txheem ua ntu zus yog raws li hauv qab no:
Melting
Cov hlau yog melted nyob rau hauv hluav taws xob arc rauv (EAF), ua raws li ladle furnace (LF) refining thiab nqus degassing (VD). Cov txheej txheem no txo cov impurities xws li sulfur thiab phosphorus, txhim kho steel huv huv, thiab ua kom zoo weldability thiab toughness.
Casting
Lub refined molten hlau yog cam khwb cia rau hauv ingots los yog nruam nrum slabs. Kev tswj nruj ntawm qhov ntsuas kub thiab txias txias pab tiv thaiv qhov chaw sib cais, shrinkage, thiab sab hauv tawg.
Rov ua dua
Cov slabs tau rov ua dua rau kwv yees li 1100-1200℃kom ua tiav tag nrho austenitization, uas yog qhov tseem ceeb rau kev dov tom ntej.
Kub Rolling
Cov slabs yog dov ntawm qhov kub thiab txias los ntawm ntau qhov kev hla. Qhov ntsuas kub tiav yog ua tib zoo tswj xyuas kom muaj qhov sib xws, zoo -grained microstructure thiab zoo ib yam khoom siv thoob plaws lub phaj thickness.
normalization
Cov phaj yog rhuab mus rau 890-940 degree, tuav rau ib lub sij hawm txaus, thiab ces cua-txias. Normalization refines lub grain qauv, txhim kho toughness, thiab txhim khu lub uniformity ntawm cov khoom siv.
Tempering
Tempering yog ua nyob rau ntawm 620-680 degree, tom qab ntawd maj mam txias. Cov kauj ruam no txo cov kev ntxhov siab sab hauv, txo cov tawv nqaij, thiab txhim kho cov kev cuam tshuam hnyav, uas yog qhov tseem ceeb rau kev ua haujlwm siab - kub.
Ncaj ncaj
Tom qab kev kho cua sov, cov phiaj xwm ncaj nraim los xyuas kom meej meej thiab qhov tseeb.
Kev kuaj ultrasonic (UT)
Tag nrho cov phaj tau txais 100% kev tshuaj xyuas ultrasonic kom paub qhov tsis xws luag xws li laminations, porosity, lossis tawg.
Mechanical Testing
Kev ntsuam xyuas tensile, kev ntsuam xyuas kev cuam tshuam (feem ntau ntawm 0℃lossis raws li tau teev tseg), thiab kev sim hardness yog ua los xyuas kom meej tias cov khoom ua tau raws li qhov yuav tsum tau muaj zog, ductility, thiab toughness theem.
Surface thiab Dimensional Inspection
Cov paib raug tshuaj xyuas rau qhov tsis xws luag xws li tawg, seams, lossis indentations. Thickness, dav, thiab ntev kuj raug txheeb xyuas kom tau raws li cov neeg siv khoom thiab cov qauv xav tau.
Kev xa khoom
SA 387 Qib 11 Chav Kawm 2 feem ntau yog muab rau hauv cov xwm txheej zoo li qub thiab tempered (N + T).
Cov ntawv thov tseem ceeb
Roj & Roj:
Hydrogenation reactors, hydrocracking units, siab - cov hlab ntsha siab, cov khoom sib cais, cov tank cia, thiab cov khoom siv rau cov pa roj qaub.
Petrochemical Kev Lag Luam:
Zoo ib yam li roj & roj, rau siab -kub ua thiab cia.
Kev tsim hluav taws xob:
Boiler nruas, chav taub hau, cov khoom siv rauv, thiab cov khoom siv hluav taws xob sib hloov hauv thermal fais fab nroj tsuag.
Tshuaj & Industrial:
Cov cuab yeej siv dav dav uas yuav tsum muaj siab - qhov kub thiab txias tsis kam, zoo li lub tank cia thiab cov hlab ntsha siab.
Yog xav paub ntxiv txog GNEE cov khoom siv hlau, tiv tauj peb ntawm beam@gneesteelgroup.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
SA 387 Qib 11 Chav Kawm 2 txawv li cas ntawm SA 387 Qib 11 Chav Kawm 1?
SA 387 Qib 11 Chav Kawm 2 muaj cov kev cai nruj dua rau kev ua kom tawv nqaij, txo qis impurity txwv, thiab feem ntau kev sim nruj dua piv rau Chav Kawm 1. Qhov no ua rau Chav Kawm 2 zoo dua rau kev siv cov hlab ntsha tseem ceeb uas tiv thaiv cov pob txha tawg yog qhov tseem ceeb, thaum Chav Kawm 1 yog siv tsawg dua.
Dab tsi ntawm cov hlab ntsha siab siv SA 387 Qib 11 Chav Kawm 2?
Nws yog siv nyob rau hauv ntau yam ntawm cov hlab ntsha, xws li boilers, tshav kub exchangers, reactors, reactors, thiab hydrogenation units. Nws yog qhov tshwj xeeb tshaj yog tsim rau cov khoom siv ua haujlwm ntawm qhov kub thiab txias qhov twg nkag siab thiab kev tawm tsam hydrogen yog qhov tseem ceeb.
Hauv kev lag luam twg yog SA 387 Qib 11 Chav Kawm 2 nquag siv?
Nws yog dav siv nyob rau hauv cov roj thiab roj kev lag luam, petrochemical nroj tsuag, chemical processing chaw, thiab fais fab nroj tsuag. Nws kuj pom muaj nyob rau hauv refineries, qhov twg nws yog siv rau cov cuab yeej tuav siab -kub hydrocarbons thiab hydrogen- cov kua dej nplua nuj.
Dab tsi yog cov khoom tseem ceeb ntawm SA 387 Qib 11 Chav Kawm 2?
Cov khoom tseem ceeb muaj xws li qhov kub siab tshaj - qhov kub thiab txias, zoo creep kuj, siab toughness, thiab tsis kam mus rau hydrogen nres thiab sulfide corrosion. Cov khoom no ua rau nws haum rau siv hauv boilers, tshav kub exchangers, thiab siab hlab ntsha ua hauj lwm nyob rau hauv hnyav tej yam kev mob.
Qhov txawv ntawm SA 387 Qib 11 Chav Kawm 1 thiab Chav Kawm 2 yog dab tsi?
Chav Kawm 2 muaj cov kev cai nruj dua rau kev ua kom tawv nqaij, kev tswj tsis huv, thiab qee zaum kev sim ntxiv piv rau Chav Kawm 1. Qhov no ua rau Chav Kawm 2 zoo dua rau cov ntawv thov tseem ceeb uas yuav tsum muaj kev ntseeg siab dua thiab ua rau cov pob txha tawg, xws li hauv siab - siab lossis qis - qhov kub thiab txias.
Qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm SA 387 Qib 11 Chav Kawm 2 thiab SA 387 Qib 22 yog dab tsi?
SA 387 Qib 11 Chav Kawm 2 yog 1.25Cr-0.5Mo steel, thaum Qib 22 yog 2.25Cr-1Mo alloy. Qhov siab dua chromium thiab molybdenum cov ntsiab lus hauv Qib 22 muab qhov zoo dua qhov kub thiab txias tsis kam, ua rau nws haum rau cov kev pabcuam kub siab dua li Qib 11 Chav Kawm 2.
Qhov kev pabcuam siab tshaj plaws ntawm SA 387 Qib 11 Chav Kawm 2 piv rau SA 387 Qib 91 li cas?
SA 387 Qib 11 Chav Kawm 2 feem ntau yog siv txog li ntawm 500 degree, whereas SA 387 Qib 91 tuaj yeem ua haujlwm ntawm qhov kub txog li 600℃lossis siab dua. Qib 91 cov ntsiab lus chromium siab dua thiab kev kho cua sov siab heev muab nws lub zog nkag siab zoo ntawm qhov kub siab tshaj piv rau Qib 11 Chav Kawm 2.
Dab tsi yog qhov sib txawv ntawm cov khoom siv kho tshuab ntawm SA 387 Qib 11 Chav Kawm 2 thiab cov pa roj carbon hlau zoo li SA 516 Qib 70?
SA 387 Qib 11 Chav Kawm 2 muaj lub zog siab dua ntawm qhov kub siab thiab ua haujlwm zoo dua rau hydrogen nres tshaj SA 516 Qib 70. Thaum SA 516 Qib 70 yog qhov tsim nyog rau qis - txog - qhov kub thiab txias, Qib 11 Chav Kawm 2 yog qhov nyiam rau siab {{11} qib 70} vim nws qhov siab {{11} Cr.
Qhov weldability ntawm SA 387 Qib 11 Chav Kawm 2 piv rau SA 387 Qib 22 li cas?
Ob qib yog weldable, tab sis SA 387 Qib 11 Chav Kawm 2 feem ntau yuav tsum qis dua preheat thiab tom qab-weld heat treatment (PWHT) kub dua Qib 22. Qib 22 cov ntsiab lus alloy siab dua ua rau muaj zog, ua rau nws muaj kev cuam tshuam rau qhov txias txias yog tias tsis ua raws li cov txheej txheem vuam zoo.