Nyob rau hauv lub tshav pob ntawm lub siab hlab ntsha thiab boiler manufacturing,A516 Qib 70yog ib qho dav siv nruab nrab -carbon manganese steel phaj. Thaum xaiv cov khoom siv thiab tsim cov txheej txheem, cov txiaj ntsig muaj zog sawv ua ib qho tseem ceeb tshaj plaws uas cov engineers ua qhov tseem ceeb. Yog li, dab tsi raws nraim qhov tawm los ntawm A516 GR 70? Kab lus no muab cov lus piav qhia ntxaws ntxaws ntawm cov txiaj ntsig ntawm A516 Qib 70 los pab koj nkag siab zoo dua cov phaj hlau no. Yog tias koj xav yuav daim hlau no, thovnyem lub pobhauv qab no tiv tauj peb.
I. Standard Yield Strength ntawm A516 GR 70
Raws li ASTM A516 / A516M cov qauv: Qhov tsawg kawg nkaus tawm lub zog ntawm ASTM A516 GR 70 yog 260 MPa (38 ksi).
Qhov no sawv cev rau tus nqi tsawg kawg nkaus lav; lub zog tawm los ntawm qhov tseeb muab cov hlau phaj feem ntau tshaj 260 MPa.
Txawm li cas los xij, hauv kev tsim kev suav thiab kev xaiv tshwj xeeb, 260 MPa yog siv los ua tus nqi siv.
II. Kev sib tham nrog Tensile Strength
Cov khoom siv kho tshuab ntawm A516 GR 70 tsis yog txiav txim siab los ntawm lub zog tawm los; Lub zog tensile kuj yuav tsum tau xav txog.
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Qhov project |
Tus nqi |
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Yield zog |
Ntau dua lossis sib npaug li 260 MPa |
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Tensile zog |
485-620 MPa |
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Elongation |
Ntau dua lossis sib npaug li 21% (kwv yees rau thickness) |
Qhov kev sib koom ua ke no qhia tau tias:
- Nruab nrab yield zog
- Dav tensile zog ntau yam
- Zoo plasticity thiab toughness
Qhov no yog ib qho ntawm cov laj thawj tseem ceeb vim li cas A516 GR 70 haum rau cov hlab ntsha siab.
III. Qhov tseem ceeb ntawm Yield Strength hauv Pressure Vessel Design
Hauv cov hlab ntsha siab tsim cov lej xws li ASME VIII thiab GB 150:
Qhov kev cia siab ntawm cov khoom siv feem ntau cuam tshuam ncaj qha rau nws lub zog tawm los.
Lub zog tawm los ntau dua tso cai rau cov phab ntsa nyias nyias raws li kev ua haujlwm zoo ib yam.
Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum nco ntsoov:
Lub zog tawm los ntau dua tsis tas txhais tau tias cov khoom tsim nyog rau cov hlab ntsha siab dua.
Cov hlab ntsha siab qhia txog cov khoom siv dav dav, suav nrog:
- Toughness
- Weldability
- Resistance rau brittle puas
2. A516 GR 70's yield zog yog "tsuas yog"
Piv nrog rau qee qhov siab -lub zog steels, A516 GR 70 tsis ua raws li cov khoom muaj zog heev. Hloov chaw, nws tswj kev nyab xeeb, ruaj khov, thiab weldable ntau yam:
- Tsawg heev rau weld cracking
- Kev tsim khoom- phooj ywg
- Muaj kev nyab xeeb dua rau - qhov kub thiab txias
Qhov no kuj yog ib qho laj thawj tseem ceeb rau nws qhov kev tsim nyog nyob rau hauv nruab nrab - mus rau - cov ntawv thov ntawm cov hlab ntsha qis.
IV. Kev sib raug zoo ntawm Yield Strength thiab Phaj Thickness
Hauv ASTM A516 tus qauv:
Lub zog tawm los tsis sib txawv los ntawm kev faib tawm thickness.
Txawm hais tias nws yog phaj nyias lossis phaj tuab, qhov tsawg kawg nkaus lub zog yuav tsum yog 260 MPa.
Txawm li cas los xij, hauv kev tsim khoom tiag tiag:
Lub zog tawm los ntawm cov phaj tuab feem ntau yog qis dua li ntawm daim hlau nyias.
Qhov no yog vim li cas cov qauv tsim yuav tsum nruj me ntsis ua raws li qhov tsawg kawg nkaus qhov tseem ceeb teev nyob rau hauv tus qauv.
V. Cov txiaj ntsig ntawm kev kho cua sov rau kev ua kom muaj zog
Cov khoom siv dav dav rau A516 GR 70 suav nrog:
Raws li -rolled condition
Cov mob zoo li qub
Feem ntau:
Normalized daim hlau nthuav tawm ntau yam microstructure
Ntau ruaj khov yield zog
Zoo dua cuam tshuam toughness kev ruaj ntseg
Hauv cov ntawv thov uas xav tau qis- qhov kub thiab txias ua haujlwm lossis ua kom muaj zog, qhov ua tau zoo A516 GR 70 feem ntau yog qhov kev xaiv zoo tshaj plaws hauv kev xyaum ua haujlwm engineering.
VI. Cov ntsiab lus
Qhov tsawg kawg nkaus tawm lub zog ntawm ASTM A516 GR 70 yog 260 MPa, tus qauv tus nqi uas yuav tsum tau ua raws li thaum lub sij hawm tsim lub nkoj siab thiab xaiv cov khoom siv.
Kev nkag siab lub zog ntawm A516 GR 70 tsis tsuas yog pab cov engineers hauv kev xaiv cov khoom siv thiab kev tsim kho kom zoo, tab sis kuj ua kom muaj kev nyab xeeb ntawm cov hlab ntsha siab, tiv thaiv kev sib tsoo los ntawm cov khoom siv tsis zoo.
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.
