Ob leeg tsim ob qho tib si tsim tib qho kev tiv thaiv Patina thiab muaj cov khoom sib xws heev rau huab cua ua kom tsis kam. Tus ntse tseem ceeb yog "J0" vs. "K2" tsim.
Ib nroos: Cov Tub Ntxhais Sib Txawv
| Yam zoo | S355J0W | S355K2W |
|---|---|---|
| Kev Cuam Tshuam Toughness Kuaj Kub | 0 Qib | -20 degree |
| Yam tsawg kawg nkaus cuam tshuam lub zog | 27 Joules | 27 Joules |
| Thawj daim ntawv thov kev nyab xeeb | Lub caij cua sov / pib lub caij ntuj no | Txias / heev lub caij ntuj no |
| Kev Siv Cov Ntaub Ntawv | Tsev Facades, cov qauv nyob rau hauv thaj tsam nrog cov winters me. | Txuas hniav, nthuav tawm cov qauv nyob rau hauv thaj chaw nrog txias winters txias, thaj chaw yuav rau kev thauj khoom. |
Cov ncauj lus kom ntxaws
1. Cov Khoom Siv Cov Neeg Kho Tshuab: Qhov sib txawv
Nov yog qhov tseem ceeb tshaj plaws, dictated los ntawm European txheemEN 10025-5.
S355J0W:Cov Lus Qhia"J0"txhais tau tias cov steel yog lav tau kom muaj qhov tsawg kawg v -} negch cuam tshuam lub zog ntawm27 joules thaum kuaj ntawm 0 degree.
S355K2W:Cov Lus Qhia"K2"txhais tau tias cov steel yog lav tau kom muaj qhov tsawg kawg v -} negch cuam tshuam lub zog ntawm27 joules thaum kuaj ntawm -20 degree.
Qhov no txhais tau li cas hauv kev coj ua:
S355K2W yog tsim nyog rau kev siv nyob rau hauv ib puag ncig uas qhov kub tuaj yeem poob qis dua qhov yoojyim. Nws yuav nyob ruaj khov thiab tawm tsam brittle tawg nyob rau hauv kev cuam tshuam lossis siab ntxhov siab ntawm ntau qhov kub tshaj s355j0w. Rau tus qauv zoo li tus choj nyob hauv huab cua txias, qhov no yog qhov kev nyab xeeb tseem ceeb.
2. Tshuaj lom neeg sib xyaw (hloov maj mam tab sis tseem ceeb)
Thaum lub sij hawm cov tshuaj lom zem rau cov ntsiab lus xws li phosphorus (p), tooj (CU)
S355J0W:Cov tshuaj lom neeg muaj pes tsawg leeg yog feem ntau teev raws li antau tshaj plawsRau cov khoom xws li carbon, leej faj, thiab phosphorus.
S355K2W:Kom ua tiav qhov qis superior tsawg - kub ceev, tus qauv feem ntau cuam tshuamCov Kev Tswj Xyuas Stricterntawm cov tshuaj lom neeg muaj pes tsawg leeg, tshwj xeeb yog los ntawm qhov yuav tsum tau txais qis duaCarbon sib npaug (CEV)Cov. Qhov no ua kom pom tseeb zoo weldability thiab muaj kev nyiam microstructure rau kev tawv.
3. Cov huab cua tiv thaiv (lawv yog qhov tseem ceeb zoo tib yam)
Qhov no yog qhov tseem ceeb tshaj plaws:Ob txoj kawm qib muaj cov khoom siv zoo ib yam.
Cov khoom siv alloy uas ua cov patina tiv thaiv ("W" rau "huab cua, thiab phosphorus-}}}}
Nyob rau hauv tib qho chaw, ob qho tib si ntawm ob qho tib si yuav tsim kho tib lub ntom, cov khoom siv xeb uas qeeb qeeb hauv kev xeb ntxiv. Tus nqi corrosion rau ob qho tib si yog ib txwm muaj 4-8 npaug qeeb dua li cov pa roj carbon hlau zoo li qub.
