ASTM A516 yog cov qauv siv dav siv cov pa roj carbon steel rau cov hlab ntsha thiab cov boilers. Ntawm nws cov qib,A516 Qib 60thiabA516 Qib 70yog cov ntaub ntawv uas feem ntau teev nyob rau hauv nruab nrab thiab tuab daim ntaub ntawv. Thaum lawv koom nrog tib tus qauv, muaj qhov sib txawv ntawm lub zog, kev siv, thiab tus nqi.
Mechanical Strength sib piv
Qhov sib txawv ncaj qha tshaj plaws ntawm A516 GR 60 thiab A516 GR 70 yog nyob rau hauv lawv lub zog txhua yam, uas kuj yog lub hauv paus rau lawv cov kev faib qib.
Nyob rau hauv tus qauv ASTM A516, tus lej "60" thiab "70" sawv cev rau qhov tsawg kawg nkaus tensile lub zog hauv ksi (txhiab phaus ib square inch).
A516 Qib 60 muaj lub zog tensile yam tsawg kawg nkaus ntawm 60 ksi, sib npaug li 415 MPa.
A516 Qib 70 yog cais nrog lub zog tensile yam tsawg kawg nkaus ntawm 70 ksi, lossis txog 485 MPa.
Hauv cov ntsiab lus siv tau, qhov no txhais tau tias:
A516 GR 60 feem ntau qhia lub zog tensile ntau ntawm 415-550 MPa.
A516 GR 70 muaj lub zog tensile ntau dua, feem ntau 485-620 MPa.
Vim tias nws lub zog siab dua, A516 GR 70 tuaj yeem tiv taus siab dua sab hauv ntawm tib lub phaj tuab. Qhov no tso cai rau cov kws ua haujlwm kom txo cov phaj tuab thaum tswj hwm qhov kev nyab xeeb uas yuav tsum tau muaj, uas yog qhov tseem ceeb tshwj xeeb hauv kev tsim thiab tsim cov hlab ntsha siab, boilers, thiab lwm yam khoom siv thauj khoom -cov kabmob.
Yog li ntawd, A516 GR 70 feem ntau nyiam nyob rau hauv niaj hnub kev lag luam tej yaam num uas yuav tsum tau ntau dua kev ua tau zoo thiab tsim efficiency.
Daim ntawv thov Scenario thiab kev lag luam siv
Ob qib yog tsim los rau cov hlab ntsha siab, boilers, thiab cov tso tsheb hlau luam, tab sis lawv cov xwm txheej siv txawv me ntsis.
A516 GR 60 feem ntau siv hauv:
Nruab nrab - cov hlab ntsha siab
Thaum tshav kub kub exchangers
Muaj cov tso tsheb hlau luam nrog cov kev ua haujlwm nruab nrab
A516 GR 70 yog qhov zoo rau:
High-siab boilers
Loj - cov hlab ntsha siab
Petrochemical thiab lub zog ua haujlwm yuav tsum muaj kev nyab xeeb dua
Hauv kev xyaum, GR 70 tau dhau los ua qhov kev xaiv nrov tshaj plaws rau kev lag luam niaj hnub vim nws txoj kev siv dav dua.
Weldability thiab Fabrication Performance
Txawm hais tias muaj qhov sib txawv ntawm lub zog, ob qib muaj qhov zoo weldability thiab kev ua tau zoo, uas yog qhov tseem ceeb rau kev tsim khoom.
- A516 GR 60 yog me ntsis yooj yim rau kev tsim thiab vuam vim nws qis carbon sib npaug.
- Txawm hais tias nws lub zog siab dua, A516 GR 70 tuav cov weldability thiab formability zoo heev, ua rau nws haum rau hnyav fabrication.Nws ua tau zoo nyob rau hauv kev txiav, dabtsi yog khoov, thiab vuam txheej txheem. Nrog rau cov txheej txheem vuam kom raug, GR 70 daim hlau qhia kev ua haujlwm ruaj khov txawm tias nyob rau hauv cov ntu tuab.Post-weld kev ua tau zoo raws li cov kev cai nruj.
Qhov sib npaug ntawm lub zog thiab ua haujlwm tau zoo yog qhov laj thawj tseem ceeb vim li cas A516 GR 70 tau txais dav los ntawm cov tuam txhab thiab cov neeg ua haujlwm engineering.
Vim li cas A516 GR 70 Yog Qhov Kev Xaiv Zoo Tshaj
Los ntawm kev pom zoo thiab kev lag luam, A516 GR 70 muab cov txiaj ntsig zoo dua.
- Lub zog siab dua txhim kho kev tsim qauv yooj yim
- Kev hloov pauv tau zoo dua rau siab - siab thiab siab - qhov kub thiab txias
- Ntev - kev cia siab rau lub sij hawm txo cov kev pheej hmoo ntawm kev saib xyuas
Rau cov laj thawj no, A516 GR 70 tau dhau los ua tus qauv xaiv rau nruab nrab thiab tuab cov phaj siab, tshwj xeeb tshaj yog rau cov haujlwm uas muaj kev nyab xeeb, kav ntev, thiab kev ua raws li qhov tseem ceeb.
