A516 Gr.70 steel phajyog cov pa roj carbon steel phaj dav siv hauv thaj chaw nruab nrab - thiab qis -kub siab cov hlab ntsha. Nws tuav txoj haujlwm tseem ceeb hauv kev lag luam xws li petrochemicals, hluav taws xob tsim hluav taws xob, boilers, thiab cov tank cia. Nrog rau kev ua haujlwm thoob ntiaj teb ntawm cov haujlwm engineering, cov teeb meem cuam tshuam nrog cov txheej txheem sib txawv feem ntau tshwm sim thaum tsim, kev yuav khoom, thiab kev tsim khoom. Yog li, cov lus nug ntawm dab tsi cov khoom sib npaug rau A516 Gr.70 tau dhau los ua ob qho tib si siv tau thiab tshwj xeeb kev txhawj xeeb.
Khoom Siv Lub Npe ntawm ASTM A516 Gr.70
ASTM A516 tus qauv feem ntau hais txog cov pa roj carbon steel phaj rau kev pabcuam siab, hais txog kev ua haujlwm hnyav hauv nruab nrab - rau - qhov kub thiab txias. Qib 70 yog qhov feem ntau siv ntau yam sib txawv, yam ntxwv los ntawm:
Nruab nrab cov ntsiab lus carbon thiab zoo weldability
Lub zog tensile siab (kwv yees 485-620 MPa)
Yuav tsum tau kuaj qhov cuam tshuam (feem ntau Charpy V-notch)
Feem ntau siv hauv ASME Boiler thiab Pressure Vessel Code
Yog li ntawd, kev txiav txim siab cov ntaub ntawv sib npaug yuav tsum muaj ntau tshaj li qhov xav tau ntawm lub zog; Nws yuav tsum muaj kev ntsuam xyuas dav dav ntawm cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, kev cuam tshuam toughness, cov khoom siv, thiab cov kev qhia tshwj xeeb.
Common International Equivalent lossis Cov Khoom Zoo sib xws
Suav Standard (GB)
Q345R
Qhov no yog tam sim no feem ntau pom zoo cov khoom siv hauv tsev sib npaug rau A516 Gr.70 hauv kev siv engineering.
- Daim Ntawv Thov: Tshwj xeeb steel rau cov hlab ntsha siab
- Qib zoo sib xws
- Sib npaug hais txog kev cuam tshuam toughness
Hauv cov haujlwm ua tau zoo, Q345R nquag siv los hloov A516 Gr.70. Txawm li cas los xij, nco ntsoov tias qhov sib txawv muaj nyob hauv kev tswj cov tshuaj muaj pes tsawg leeg thiab kev xa khoom ntawm ob qho tib si. Kev hloov pauv nruj yuav tsum tau txais kev pom zoo los ntawm cov kws tsim qauv lossis cov kws tshaj lij.
European Standards (EN)
P355GH (EN 10028-2)
Qhov no yog qhov ze tshaj plaws nyob sab Europe uas tsis yog{0}} alloy steel sib npaug rau A516 Gr.70 rau cov hlab ntsha siab.
- Me ntsis siab zog theem
- Superior siab - thiab nruab nrab- kub ua haujlwm
- Dav siv nyob rau hauv European txheem boilers thiab cov khoom siv siab
Nyob rau hauv cov txheej txheem European, P355GH feem ntau raug xaiv los ua cov khoom sib npaug rau A516 Gr.70.
Japanese Standard (JIS)
SPV490 (JIS G3116)
Japanese siab lub nkoj steel phaj nrog lub zog qib piv rau Gr.70.
- Zoo weldability.
- Cov kev cai nruj toughness.
Hauv Japanese-nyiaj pab lossis JIS- cov haujlwm ua raws, SPV490 feem ntau suav tias yog cov khoom sib piv rau A516 Gr.70.
"Equivalence" Tsis Sib npaug rau "Direct Hloov"
Hauv kev xyaum ua engineering, ntau qhov kev tsis sib haum xeeb tshwm sim los ntawm kev nkag siab yuam kev ntawm lo lus "sib npaug." Nws yog ib qho tseem ceeb kom hais txog:
Cov qauv sib txawv hais txog qhov sib txawv
Qee cov qauv qhia qhov tseem ceeb tshaj -kub kev ua haujlwm, thaum lwm tus tsom ntau dua rau qhov qis - qhov kub thiab txias tsis kam.
Lub zog sib npaug tsis sib npaug kom ua tiav qhov sib npaug
Cov tshuaj lom neeg muaj pes tsawg leeg, qhov ntsuas qhov ntsuas kub, thiab kev kho cua sov txhua qhov cuam tshuam rau qhov kawg siv kev nyab xeeb.
Kev tswj hwm thiab tshuaj xyuas cov cai sib txawv
Hauv cov cuab yeej tshwj xeeb thiab kev siv lub nkoj siab, kev hloov khoom siv feem ntau yuav tsum tau sau ntawv pom zoo los ntawm cov qauv tsim, cov neeg saib xyuas, lossis cov neeg siv khoom.
Hloov cov ntaub ntawv nrog qhov sib npaug tsis yog qib yooj yim -rau- qib sib tw; nws yuav tsum ua raws li peb lub hauv paus ntsiab lus:
- Ua ntej, kev pab cuam dav dav ntawm cov khoom tseem ceeb- kom ntseeg tau tias lub zog tawm los, lub zog tensile, cuam tshuam qhov hnyav, thiab lwm yam kev ntsuas raws li cov qauv tsim.
- Thib ob, txheej txheem kev sib raug zoo: weldability thiab formability yuav tsum phim cov txheej txheem qub. Piv txwv li, ASTM A516 Qib 70 yuav tsum tau 75-125℃weld preheat kub; cov ntaub ntawv sib npaug yuav tsum tuav cov txheej txheem sib piv.
- Thib peb, daim ntawv thov- qhov tshwj xeeb tsim nyog: ua qhov tseem ceeb ntawm HIC- cov qhab nia tiv taus rau cov cheeb tsam acidic, thiab ntxiv dag zog rau kev ntsuas qhov tseeb rau cov xwm txheej cryogenic.
Cov lus pom zoo rau kev xaiv cov khoom hauv Engineering Projects
Thaum ntsib qhov xav tau qhov sib npaug sib npaug rau A516 Gr.70 hauv cov haujlwm, ua raws li cov lus qhia no:
Txheeb xyuas tus qauv tsim qauv (ASME, GB, EN, lossis JIS)
Sib piv cov ntsuas kev ua haujlwm tseem ceeb: tawm lub zog, lub zog tensile, thiab cuam tshuam toughness
Xav txog qhov xwm txheej ntawm kev xa khoom thiab kev tshuaj ntsuam xyuas
Ua cov ntaub ntawv sib piv cov ntaub ntawv lossis kev txheeb xyuas suav thaum tsim nyog
Sib txuas lus thiab paub meej nrog cov tsim qauv, cov neeg siv khoom, lossis cov koom haum tswj hwm ua ntej
Xaus
A516 Gr.70 steel phaj yog dav saws precisely vim hais tias nws ntaus ib qho kev sib npaug ntawm lub zog, toughness, thiab manufacturability. Txawm hais tias muaj ntau yam "sib npaug lossis zoo sib xws" cov ntaub ntawv muaj nyob thoob plaws hauv lub tebchaws cov qauv-xws li Q345R, P355GH, thiab SPV490-qhov sib npaug tiag tiag yuav tsum tau ua raws li cov kev qhia tshwj xeeb, kev ua haujlwm, thiab kev lav phib xaub ntawm kev nyab xeeb. Hauv kev siv tswv yim, kev ntsuam xyuas dav yuav tsum suav nrog cov qauv hauv cheeb tsam, kev ua haujlwm, thiab cov txheej txheem yuav tsum tau ua. Tsis txhob hloov qhov muag tsis pom kev uas tuaj yeem qhia txog kev pheej hmoo ntawm kev nyab xeeb khoom siv, ua kom cov khoom sib npaug ua tau raws li kev ua tau zoo thiab cov xwm txheej ntawm daim ntawv thov.
Yuxin Steel muaj ntau hom phaj qib. Yog tias koj tsis paub meej txog kev xaiv cov hlau phaj tsim nyog,thov qhia koj cov kev xav tau. Peb muab cov kev daws teeb meem customized.
