Cov khoom lag luam
ASTM A36 yog tus qauv kev paub tshwj xeeb los ntawm Asmeskas haiv neeg rau kev sim thiab cov ntaub ntawv) rau cov hlau txheem carbon, feem ntau siv nyob rau hauv Tebchaws Asmeskas rau welded thiab bolted qauv qauv.
Nws yog lub npe hu rau nws cov versatility, zoo weldability, thiab lub zog nruab nrab, ua nws ib qho staple hauv kev tsim dav. A36 tau cais raws li qhov qis qis- cov khoom siv roj carbon hlau, nrog nws cov khoom siv kom haum rau qhov kev xav tau ntawm qhov kev xav tau.
Ntawm qhov tod tes, en 10025- 2 s235jr yog European txheem (en) rau kub {3} siv nyob rau hauv Europe yog cov phiaj xwm zoo sib xws. Qhov "S235" qhia tias tsawg kawg yog los lub zog muaj zog ntawm 235 MPa, thiab "JR" ntawm kev cuam tshuam kev cuam tshuam nyuaj ntawm 27 {8} degree.
Zoo li A36, S235JR yog cov hlau me me uas muaj cov ntsiab lus muaj roj carbon tsawg, muab cov khoom muaj txiaj ntsig zoo thiab weldability. Ob qib feem ntau sib hloov hauv International Projected vim lawv qhov sib xws, tab sis ib qho zoo tshaj plaws saib pom kev txiav txim siab txog lawv qhov sib txig sib luag.
Tshuaj lom neeg sib xyaw ua ke ntawm A36 thiab S235JR
Cov tshuaj lom neeg muaj tshuaj lom yog qhov tseem ceeb hauv kev txiav txim siab sib txig, vim nws cuam tshuam weldability, lub zog, thiab corrosion tsis kam. A36 tau muaj cov kev txwv dav rau qee cov ntsiab lus, thaum S235JR muaj cov txheej txheem tswj ntawm phosphorus thiab leej faj rau kev nruj me ntsis.
Cov lus hauv qab no piv cov tshuaj lom neeg (% los ntawm qhov hnyav) ntawm ASTM A36 thiab EN 10025-2 S235JR, raws li lawv cov qauv raws li lawv cov qauv: \\
|
Lub ntsiab |
ASTM A36 (% los ntawm qhov hnyav) |
EN 10025-2 S235JR (% los ntawm qhov hnyav) |
Sau ntawv rau kev sib piv |
|---|---|---|---|
|
Carbon (c) |
0.26 max |
0.17 Max |
S235JR muaj qis C rau Weldability zoo dua; A36 tso cai rau qib siab dua rau kev nce zog tab sis txaus ntshai brittleness. |
|
Manganese (MN) |
1.03 Max (sib txawv los ntawm cov tuab) |
1.40 max |
S235JR tso cai siab dua MN rau kev txhim kho nruj; A36's MN sib txawv (piv txwv li, 0.80-1.20% rau cov phiaj thicker). |
|
Phosphorus (p) |
0.040 max |
0.035 Max |
S235JR muaj me ntsis qis p rau kev txhim kho cov ntsiab lus tseem nruj. |
|
Sulphur (s) |
0.050 max |
0.035 Max |
S235JR lub qis dua S txo qhov brittleness, ua rau nws zoo dua rau cov mob txias. |
|
Silicon (si) |
0.40 max |
0.55 max |
Zoo sib xws, nrog S235JR tso cai me ntsis siab dua Si rau corrosion tsis kam. |
|
Tooj Liab (Cu) |
0.20 min (yog tias teev) |
0.55 max |
A36 yuav suav nrog CU rau huab cua tsis kam yog tias thov; S235JR muaj ntau dua Max rau lub hom phiaj zoo sib xws. |
|
Hlau (FE) |
Seem |
Seem |
Ob qho tib si yog cov pa roj carbon hlau uas muaj koob. |
S235JR Cov Stricter Tswj Rau C, P, thiab S muab cov kev cuam tshuam zoo dua thiab weldability, ua rau nws zoo dua rau kev nyab xeeb hauv kev tiv thaiv kev nyab xeeb. A36 qhov dav dav muaj kev hloov pauv tau tab sis yuav xav tau kev sim ntxiv rau tsawg- kub siv.
Cov Khoom Siv Neeg Kho Tshuab Sib Txawv Ntawm A36 thiab S235JR
Cov khoom siv neeg kho tshuab txiav txim siab seb cov hlau ua hauv qab thauj, thiab thaum A335JR zoo sib xws, S235jr muaj cov txiaj ntsig zoo dua qub. Cov lus hauv qab no sib piv lawv cov khoom siv neeg kho mob raws cov qauv cov qauv:
|
Ntiag tug |
ASTM A36 |
EN 10025-2 S235JR |
Sau ntawv rau kev sib piv |
|---|---|---|---|
|
Yield zog (min) |
250 MPa (36 KSI) |
235 MPa |
A36 has slightly higher yield for thicker sections; S235JR's yield decreases with thickness (e.g., 225 MPa for >16 hli). |
|
Lub zog tensile |
400-550 mpa (58-80 ksi) |
360-510 MPa |
Zoo sib xws li li, nrog A36 muab cov kev txwv siab dua rau kev saib xyuas zoo dua hauv qee kis. |
|
Elongation (Min, 200 hli) |
20% |
24% |
S235jr muaj siab dua elongation, txhim kho kev muaj peev xwm thiab txo kev pheej hmoo kev pheej hmoo thaum fabrication. |
|
Kev cuam tshuam cov tawv (charpy v - Itch) |
Tsis teev |
27 j ntawm +20 degree |
S235JR lav cov kev cuam tshuam nyuaj, ua kom nws zoo dua rau cov ntawv thov uas xav tau tsis kam rau nkig tawg; A36 tsis tau txib qhov no. |
|
Hardness (HB, raug) |
119-159 HB |
120-170 HB |
Piv, nrog rau ob qho haum rau kev siv lub tshuab. |
A36 thiab S235JR tau tshaj tawm cov txiaj ntsig thiab lub zog tensile, ua rau lawv hloov pauv tau rau kev mob siab rau kev mob siab. Txawm li cas los xij, S235JR cov kev coj ua cov khoom siv nruj muab nws rau ntawm European cov qauv, thaum A36 tau paub txog nws cov versatility hauv bolted thiab welded qauv.
Kev Ntsuam Xyuas Kev: Puas yog A36 tiag tiag sib npaug rau S235JR?
A36 thiab S235JR feem ntau suav tias yog ua haujlwm sib npaug vim lawv cov tshuaj sib thooj zoo sib xws thiab cov khoom siv ib yam, tso cai hloov chaw zoo xws li kev tsim kho dav dav thiab welded qauv.
Ob qho tib si yog cov hlau me me uas muaj cov ntsiab lus muaj roj carbon tsawg, muab Weldability zoo thiab muaj peev xwm. Qhov tseeb, AWS D1.1 (American Vuam Society) tso cai S235JR raws li qhov sib npaug rau A36 rau kev sib txuas ua ke hauv cov phiaj xwm thoob ntiaj teb.
Txawm li cas los xij, lawv tsis zoo ib yam:
Tus qauv: A36 yog tswj hwm los ntawm ASTM (American), thaum S235JR ua raws cov en (European), ua rau qhov sib txawv ntawm kev xeem. S235JR yuav tsum muaj kev cuam tshuam kev cuam tshuam, ua kom muaj kev cuam tshuam zoo dua, hos 36 tsis.
Kev ua tau zoo hauv kev mob heev: S235JR's Stricter P / s txwv tsis pub muab cov ntsiab lus zoo dua qub, ua rau nws zoo dua rau cov chaw txias lossis xeb. A36 tej zaum yuav tsum tau kuaj ntxiv rau cov kev siv.
Muaj thiab nqi: A36 muaj ntau nyob hauv Asmeskas, S235JR nyob hauv Tebchaws Europe; Cov nqi yog qhov zoo sib xws, tab sis cov cheeb tsam muaj cuam tshuam rau kev tshaj tawm.
Hloov chaw: Hauv kev xyaum, S235JR tuaj yeem hloov A36 feem ntau, tab sis rau high {{}}}} qhov ntsuas kub, xyuas nrog cov lis dej num zoo li ASME lossis AWS.
Txog kev cai sib txig sib luag, sab laj rau cov ntaub ntawv pov thawj thiab kev sim, raws li kev hloov me me tuaj yeem cuam tshuam rau hauv cov ntawv teev tshwj xeeb.
Cov ntawv thov ntawm A36 thiab S235JR
Ob qho A36 thiab S235JR tau siv hauv cov ntawv thov sib xws vim lawv qhov sib txig sib luag:
Kev tsa tsev: Cov tuam tsev, txuas hniav, thiab kev ua haujlwm nyob qhov twg muaj lub zog muaj zog thiab cov qauv muaj zog yog xav tau.
Cov Machinery hnyav: Cranes, cov excavators, thiab cov khoom siv thiab cov khoom siv virtable steel.
Nkoj nkoj: Hulls thiab superstructures, txiaj ntsig los ntawm corrosion tsis kam.
Offshore Cov Qauv: Platforms thiab rigs, qhov twg yog tus yuam sij (S235JR nyiam dua rau cov kev mob txias dua).
Kev Ncaj Ncaim Hluav Taws Xob: BOLTED thiab Welded cov rooj sib txoos hauv cov khoom siv lag luam.
Lawv sib txig sib txig sib txig sib txig sib txig sib luag hauv cov dej num thoob ntiaj teb, txo cov teeb meem sib xws.
