ASTM A387 Qib 11 Chav Kawm 2yog chromium -molybdenum alloy steel phaj tsim los rau siab -kub siab cov hlab ntsha, muab kev txhim kho lub zog thiab corrosion kuj vim nws 1.25% Chromium thiab 0.50% Molybdenum cov ntsiab lus, nrog "Class 2" qhia txog kev kho cua sov thiab lub zog siab dua (75-100 ksi 100 ksi 100 min, tensksi, Classi, ntau dua tensksi, rau boilers, tshav kub exchangers, thiab cov roj / roj / tshuaj industries.
A387 GR 11 CLASS 2 Phaj Specification
| Khoom | Specification |
|---|---|
| Qib | ASTM A387 Gr 11 CL.2 Alloy Steel Phaj |
| Txuj | ASTM A 387 / ASME SA387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASME SA387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASME SA387 / ASTM A387 / ASME SA387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASTM A387 / ASME SA387) Cov ntawv pov thawj |
| Dav | 1000mm - 4500 hli |
| Thickness | 5mm - 150 hli |
| Ntev | 3000mm - 18000 hli |
| Impact Tested | -52 ° C |
| Txheej txheem | Kub-Rolled (HR) |
ASTM A387 GR 11 CLASS 2 Cov tshuaj muaj pes tsawg leeg
| Qib | C | Mn | P | S | Si | Cr | Mo |
| A387 Gr.11 | 0.05-0.17 | 0.40-0.65 | 0.035 | 0.035 | 0.50-0.80 | 1.00-1.50 | 0.45-0.65 |
ASTM A387 / SA387 GR 11 CLASS 2 Mechanical Properties
| Chav kawm | Tensile (MPa) | Tawm tswv yim (MPa) | Elong. (50 hli) | Elong. (200 hli) | Reduc'n ntawm Cheeb Tsam * |
| Chav Kawm 1 | 415 - 585 | 240 feeb | 22% min | 19% min | - |
| Chav kawm 2 | 515 - 690 | 310 min | 22% min | 18% min | - |
Qib sib npaug
| Lub teb chaws | Teb chaws USA | Teb chaws Europe | Lub teb chaws Yelemees | ENGLAND | FRANCE | RUSSIA |
| STANDARDS | ASTM | TS EN 10028 | DIN | BS | TIAB SA 36206 | GOST |
| Qib 11 | A387 | 13CrMoSi5-5 | - | 621B | - | - |
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1. Cov txheej txheem kho cua sov
Raws li qhov tseeb ASTM A387 / A387M cov qauv raws li xyoo 2026, cov khoom siv yuav tsum tau txais kev kho cua sov kom ua tiav cov khoom siv ntawm Chav Kawm 2.
Kev xa khoom: Feem ntau xa tuaj rau hauv ib qho xwm txheej thiab Tempered (N + T).
Normalizing: Cov hlau yog rhuab mus rau qhov kub austenitizing thiab tom qab txias hauv huab cua lossis los ntawm kev ua kom txias txias (xws li, huab cua blast lossis kua quenching).
Tempering:
Qhov ntsuas kub tsawg kawg nkaus: Yuav tsum ncav cuag 620℃(1150℃F).
Lub Hom Phiaj: Chav 2 yuav tsum muaj kev tswj hwm nruj dua piv rau Chav Kawm 1 kom ua tiav lub zog tensile siab dua (515-690 MPa).
2. Vuam txheej txheem
Vim yog cov ntsiab lus ntawm chromium thiab molybdenum, cov khoom no muaj kev cuam tshuam rau hardening thiab txias cracking. Cov txheej txheem welding nruj yuav tsum tau:
Preheating: Nyob ntawm thickness, qhov pom zoo preheat kub yog feem ntau ntawm 120℃thiab 150℃(250℃F - 300℃F).
Interpass Temperature: Yuav tsum tau khaws cia siab tshaj qhov kub preheat thoob plaws hauv cov txheej txheem vuam kom ntseeg tau cov qauv kev ruaj ntseg.
Tshaj tawm -Weld Heat Treatment (PWHT):
Qhov kub thiab txias: Feem ntau ua nyob ib ncig ntawm 690℃± 14℃los txo qhov kev ntxhov siab ntawm vuam.
Ceeb Toom: Qhov kub ntawm PWHT yuav tsum tsis txhob tshaj qhov qub tempering kub ntawm lub hauv paus hlau kom tsis txhob poob lub zog.
3. Fabrication thiab kuaj
Txiav thiab sib sau: Txhawb cov ntshav, laser, lossis CNC nplaim taws txiav. Kub sib sau yuav tsum tau ua nyob rau hauv lub austenitizing kub; txwv tsis pub, yuav tsum muaj kev kho cua sov (Normalizing + Tempering) tag nrho.
Kev Ntsuas Kev Ntsuas: Kom ua tau raws li 2026 cov qauv kev nyab xeeb, cov khoom siv feem ntau dhau 100% Radiographic Testing (RT), Hardness Testing, Charpy V-notch Impact Testing (Ntau dua lossis sib npaug rau 94 J), thiab Cov Khoom Siv Zoo (PMI).
Vim li cas thiaj xaiv peb:
Koj tuaj yeem tau txais cov khoom zoo meej raws li qhov koj xav tau ntawm tus nqi tsawg kawg nkaus.
Peb kuj muab Reworks, FOB, CFR, CIF, thiab qhov rooj rau qhov rooj tus nqi xa khoom. Peb xav kom koj ua deal rau shipping uas yuav zoo heev.
Cov ntaub ntawv uas peb muab yog muaj tseeb tiag, txoj cai los ntawm raw cov ntaub ntawv xeem daim ntawv pov thawj mus rau qhov kawg dimensional nqe lus.
Peb lav muab cov lus teb tsis pub dhau 24 teev (feem ntau hauv tib lub sijhawm)
Koj tuaj yeem tau txais cov khoom hloov pauv, zeb xa khoom nrog txo lub sijhawm tsim khoom.
Peb tau mob siab rau peb cov neeg siv khoom. Yog tias nws yuav tsis tuaj yeem ua tau raws li koj cov kev xav tau tom qab kuaj xyuas tag nrho cov kev xaiv, peb yuav tsis ntxias koj los ntawm kev cog lus tsis tseeb uas yuav tsim kev sib raug zoo rau cov neeg siv khoom.
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.
Yog vim li cas A387 Gr 11 CL 2 dav siv nyob rau hauv refineries?
Nws zoo heev -kub tsis kam (txog 593 degree) thiab tiv thaiv hydrogen nres ua rau nws zoo tagnrho rau cov khoom siv refinery xws li hydrocrackers thiab cov neeg hloov kho, ua rau cov txheej txheem hnyav hnyav.
Qhov tsawg kawg nkaus tensile lub zog ntawm A387 Gr 11 CL 2 yog dab tsi?
Nws lub zog tensile yam tsawg kawg nkaus yog 415 MPa (60 ksi), thiab qhov tsawg kawg nkaus lub zog yog 205 MPa (30 ksi), haum rau siab - kev pabcuam siab.
A387 Gr 11 CL 2 puas tuaj yeem siv rau hauv petrochemical tshav kub exchangers?
Yog, nws yog zoo kawg nkaus haum rau petrochemical tshav kub exchangers. Nws zoo thermal conductivity thiab weldability ua kom muaj kev hloov pauv tau zoo thiab kev sib koom ua haujlwm ruaj khov hauv kev hloov pauv kub.
Dab tsi yog qhov tuab ntawm A387 Gr 11 CL 2 daim hlau?
Common thickness ranges ntawm 6mm mus rau 200mm, customizable rau tshwj xeeb siab lub nkoj tsim thiab load- bearing yuav tsum tau.
A387 Gr 11 CL 2 yog dab tsi?
Nws yog ib qho qis- alloy chromium-molybdenum steel phaj, feem ntau yog siv rau cov hlab ntsha hauv siab - kub thiab corrosive ib puag ncig, nrog rau cov cua sov zoo thiab weldability.
Lub ntsiab tshuaj muaj pes tsawg leeg ntawm A387 Gr 11 CL 2 yog dab tsi?
Cov ntsiab lus tseem ceeb: C (tsawg dua lossis sib npaug li 0.15%), Cr (1.00-1.50%), Mo (0.45-0.65%), Mn (0.40-0.70%), Si (0.50-1.00%), kom ntseeg tau tias nws ua haujlwm kub.
Qhov kev pabcuam siab tshaj plaws ntawm A387 Gr 11 CL 2 yog dab tsi?
Nws tuaj yeem ua haujlwm tsis tu ncua ntawm qhov kub siab tshaj plaws ntawm 593℃(1100℃F), tiv thaiv nkag thiab oxidation nyob rau hauv ntev -lub sij hawm siab - kub raug.
Dab tsi boiler Cheebtsam A387 Gr 11 CL 2 siv los tsim?
Nws yog feem ntau siv rau boiler siab qhov chaw xws li chav nruas, headers, thiab rauv tubes, raws li nws resists creep thiab oxidation nyob rau hauv ntev - lub sij hawm siab - siab, siab - kub raug.
Puas yog A387 Gr 11 CL 2 haum rau cov khoom siv hluav taws xob nuclear?
Nws muaj feem xyuam rau cov khoom siv hluav taws xob nuclear xws li cov kav dej txias thiab cov tso tsheb hlau luam, ua tsaug rau nws cov kev cuam tshuam nruj thiab kev ruaj ntseg, ua raws li cov qauv kev lag luam nuclear kev nyab xeeb.
Qhov kev pabcuam siab tshaj plaws ntawm A387 Gr 11 CL 2 yog dab tsi?
Nws tuaj yeem ua haujlwm tsis tu ncua ntawm qhov kub siab tshaj plaws ntawm 593℃(1100℃F), tiv thaiv nkag thiab oxidation nyob rau hauv ntev -lub sij hawm siab - kub raug.
Vim li cas A387 Gr 11 CL 2 tsis pom zoo rau cov tshuaj chloride - nplua nuj marine daim ntaub ntawv?
Nws tsis muaj kev tiv thaiv txaus rau chloride-induced corrosion thiab pitting, uas tuaj yeem ua rau cov khoom degradation hauv marine ib puag ncig; nws yog qhov zoo dua rau kev lag luam hauv av hloov chaw.