A387 Gr 11 CL 2 Steel Phaj - Siab Vessel

A387 G 11 CL 2 yog hom chrome-moly (chromium-}} molybdenum) alloy steel phaj (ASTM A387/ASME SA387) tsim los rau siab-kub siv, tshwj xeeb tshaj yog nyob rau hauv welded boilers, siab hlab ntsha, thiab tshav kub exchangers, muab zoo heev high-temp lub zog, oxidation nws 5% ~ 2% corrosion kuj. Molybdenum cov ntsiab lus, nrog "Class 2" qhia tias muaj zog tensile ntau dua li Chav Kawm 1.

kev ua haujlwm ua haujlwm

1. Txiav thiab sib sau

Txiav: Cov khoom feem ntau yog txiav siv CNC nplaim taws, Plasma, lossis Laser txiav.

Kev sib sau: Cold forming yog feem ntau rau cov phaj nyias; Txawm li cas los xij, hnyav- cov ntu phab ntsa lossis lub taub hau yuav tsum tau Kub Forming kom txo cov kev ntxhov siab uas seem.

2. Vuam txheej txheem (WPS)

Lub siab hardenability ntawm Cr-Mo steel yuav tsum nruj thermal tswj kom tsis txhob tawg:

Preheating: Qhov tseem ceeb los tiv thaiv hydrogen-induced cracking. Preheating kub feem ntau yog li ntawm 150℃mus rau 250℃nyob ntawm thickness.

Consumables: Siv tsawg-hydrogen electrodes sib piv cov hlau chemistry (piv txwv li, E8018-B2 lossis ER80S-B2).

Interpass Kub: Yuav tsum tau ceev ceev (feem ntau<300°C) to prevent grain growth and maintain toughness.

3. Kev kho cua sov

Qhov no yog theem tseem ceeb kom ua tiav Chav Kawm 2 txhua yam khoom (Tensile zog: 75-100 ksi):

Normalizing: Cua sov rau 900℃-950℃tom qab cua txias los yog ua kom txias txias.

Tempering: Ua qhov tsawg kawg ntawm 620℃(1150℃F) txhawm rau txhim kho ductility thiab txo kev ntxhov siab.

Tom qab- Weld Heat Treatment (PWHT): Yuav tsum tau ua rau Qib 11. Nws feem ntau ua tiav ntawm 650℃-700℃kom ntseeg tau tias thaj chaw weld thiab cua sov- thaj chaw cuam tshuam (HAZ) ua tiav qhov yuav tsum tau muaj zog.

4. Kev Tshawb Fawb thiab Kev Ntsuas (NDT)

Tsis yog-Kev Ntsuas Kev Ua Phem: suav nrog Kev Ntsuas Ultrasonic (UT) rau qhov tsis xws luag sab hauv, Kev Ntsuas Radiographic (RT) rau kev ncaj ncees weld, thiab Kev Ntsuas Magnetic Particle (MT).

Mechanical Testing: Tensile, Yield, thiab Elongation tests.

Kev Ntsuam Xyuas Kev Nyuaj Siab: Charpy V- ntsuas qhov ntsuas kub ntawm qhov ntsuas kub kom ntseeg tau tias qis-kub toughness.

Hardness Testing: Qhov siab tshaj plaws hardness feem ntau txwv (piv txwv li, Tsawg dua los yog sib npaug rau 225 HBW) kom ntseeg tau tias muaj zog tiv thaiv corrosion.

daim ntawv thov

1. Kev lag luam Petrochemical & Refinery

Qhov no yog qhov feem ntau daim ntawv thov sector vim cov khoom tsis kam mus rau High -Tub kub Hydrogen Attack (HTHA) thiab qaub roj (H₂S).

Hydrogenation Reactors: Siv nyob rau hauv hydrocracking thiab hydrotreating units.

Fractionation Kem: Siv rau hauv cov txheej txheem refinery distillation.

Separators & Storage Tanks: Tshwj xeeb rau siab -kub kua thiab roj cia.

2. Kev tsim hluav taws xob

Hauv cov chaw tsim hluav taws xob, cov hlau muaj nuj nqis rau nws qhov kev nkag siab thiab thermal stability nyob rau hauv tas li cua sov.

Boiler Cheebtsam: suav nrog boiler nruas, chav headers, thiab superheater raj.

Turbine Equipment: Siv nyob rau hauv chav turbine casings thiab lwm yam siab -siab tshuab.

Nuclear Facilities: Siv rau hauv lub siab tshwj xeeb-cov kabmob hauv cov chaw tsim hluav taws xob nuclear.

3. Roj & Roj ua haujlwm

Cov khoom siv lub zog tensile siab (75-100 ksi) ua rau nws haum rau hnyav - cov khoom siv siab.

Thaum tshav kub kub Exchangers: Tshwj xeeb plhaub-thiab- tube exchangers raug rau thermal cycling.

Siab -Cov kav dej siab: Siv rau cov tsheb thauj mus los tuav cov tshuaj hnyav lossis hydrocarbons.

Gas Handling Systems: Nws yog ib qho tseem ceeb rau kev ua cov khoom siv roj uas muaj kev tiv thaiv corrosion yog qhov tseem ceeb.

4. Kev lag luam hnyav dav dav

Lub Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwjchim rau hauv txhua lub tshuab hluav taws xob los yog siab - lub tog raj kheej siab.

Cov Khoom Siv Tshuaj Txheej Txheem: Cov khoom siv hluav taws xob thiab cov hlab ntsha tuav corrosive, siab - cov tshuaj tiv thaiv kub.

Hu rau tam sim no

Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.

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 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.

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.

Tus qauv twg tswj hwm A387 Gr 11 CL 2?

Nws ua raws li ASTM A387, tus qauv rau alloy steel daim hlau rau cov hlab ntsha siab, qhia cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab kev tsim khoom.

Dab tsi yog qhov txawv ntawm A387 Gr 11 CL 1 thiab CL 2?

CL 2 muaj kev nruj dua qhov yuav tsum tau ua kom tawv nqaij (Charpy V-notch) dua li CL 1, haum rau qis dua - kub lossis xav tau ntau lub nkoj siab.

Puas yog A387 Gr 11 CL 2 weldable?

Yog, nws yog heev weldable. Preheating kom raug (150{2}}260 degree) thiab kev kho cua sov tom qab vuam (PWHT) yuav tsum tau ua kom tsis txhob muaj qhov txias txias thiab ua kom muaj kev sib koom ua ke.

Dab tsi ncej-weld kev kho cua sov (PWHT) yuav tsum tau rau A387 Gr 11 CL 2?

Hom PWHT: Tempering ntawm 620-677℃(1150-1250℃F) rau lub sijhawm txaus, txo qhov kev ntxhov siab ntawm vuam thiab txhim kho toughness.

A387 Gr 11 CL 2 yog dab tsi?

Siv nyob rau hauv refineries, petrochemical nroj tsuag, boilers, thiab nuclear fais fab nroj tsuag, xws li reactor hlab ntsha, tshav kub exchangers, thiab chav kav.

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.