1. Tshuaj lom neeg sib xyaw: qhov tseem ceeb sib txawv
| Lub ntsiab | 09cupcrni - A (Weathering Hlau) | Q235 (Nruab Nrab Cov Hlau Hlau) | Lub hom phiaj hauv 09cupcrni - a |
|---|---|---|---|
| Carbon (c) | Tsawg dua los yog sib npaug rau 0.12% | 0.14% - 0.22% | Tsawg C rau Weldability zoo. |
| Tooj Liab (Cu) | 0.25% - 0.55% | Tsis tas yuav | Qhov tseem ceebrau sib sau ua ib co ntom, tiv thaiv cov xeb xeb. |
| Phosphorus (p) | 0.07% - 0.15% | Tsawg dua los yog sib npaug rau 0.045% | Ntxiv dag zog thiab txhim kho corrosion tsis kam. |
| Chromium (cr) | 0.30% - 1.25% | Tsis tas yuav | Cov ntaub ntawv ruaj khov oxides, txhim kho cov cua nab kuab tiv thaiv. |
| Npib tsib caug (ni) | Tsawg dua los yog sib npaug rau 0.65% | Tsis tas yuav | Txhim kho kev nruj thiab tag nrho cov corrosion tsis kam. |
| Cov muaj pes tsawg | Hlau (FE) +Alloying Ntsiab | Qhov tseem ceeb hlau (FE) + cov pa roj carbon (c) |
Ntsiab lus:09cupcrni - a yog aTsawg -} allloy steelLeej twg uas nws cov tshuaj noj yog tsim los tswj cov xeb. Q235 yog qhov yooj yimCov Hlau Hlaunrog tsis muaj xws li aloying rau corrosion tswj.
2. Corrosion Kuj: Qhov tseem ceeb tshaj plaws
| Ntiag tug | 09cupcrni - a | Q235 |
|---|---|---|
| Lub tshuab | Cov ntaub ntawv aKev tiv thaiv PatinaCov. Cov khoom siv alloy tsim cov txheej ntom, cov khoom siv xeb uas thaiv cov pa ntxiv thiab ua kom ya raws. | Cov ntaub ntawv antxeem tau, tsis -}}} Tiv thaiv xebCov. Nws tseem tawg tawg, ua rau cov hlau tshiab txhawm rau txhawm rau txhim kho corrosion ntxiv. |
| Qho kawg | Corrosion tus nqi qeeb qeeb(Tom qab pib lub teeb dej) mus rau theem tsis zoo. Nws yog tsim rauntev - sij hawm, txij nkawm - dawbSiv hauv cov cua nab. | Corrosion hlob lawm linearly thiab txuas ntxiv, tas li thinning tus ntoo khaub lig - seem. Nwsyuav tsum tau pleev xim lossis galvanizingrau kev tiv thaiv. |
| Kev tshwm sim | Tsim kev ruaj khov, txaus nyiam, Tsaus Russet - xim xim. | Ua cov flaky, reddish - xim av xeb uas zoo nkaus li tsis kho thiab tsis muaj zog. |
3. Cov Khoom Siv Kho Tshuab
| Ntiag tug | 09cupcrni - a | Q235 |
|---|---|---|
| Paib lub zog | Ntau dua los yog sib npaug rau 345 mpa | Ntau dua los yog sib npaug rau 235 MPa |
| Lub zog tensile | Ntau dua los yog sib npaug rau 490 mpa | 370 - 500 mpa |
| Qhov Tseem Ceeb | Lub zog siab duaTso cai rau kev siv cov ntu thinner, txuag kom hnyav, thaum tseem tab tom corrosion {{}} tiv taus. | Ua tau lub zog txaus rau lub hom phiaj dav dav siv, tab sis yuav tsum muaj corrosion tiv thaiv. |
4. Daim ntawv thov: qhov twg lawv tau siv
| Hlau Hom | Cov Kev Siv Raug Raug |
|---|---|
| 09cupcrni - a | Kev tsis tau lees paub cov qauv zoo:Txuas hniav, cov tsheb ciav hlau, cov thawv xa khoom, cov duab kos duab, duab kos duab, duab duab puab, kis cov yees. Siv qhov twgntev - lo lus ruaj khov thiab kev txij nkawm tsawgyog qhov tseem ceeb. |
| Q235 |
Kev Tsim Kho Dav(Thaum pleev xim), rebar sab hauv qhob, cov tshuab cov kab sib tw, cov nkhaus, tsis {{tseem ceeb. Siv qhov twgTus nqi pib yog tus tsav thawjThiab cov hlau yuav muaj kev tiv thaiv los ntawm cov ntsiab lus. |
