Nyob rau hauv cov tshuaj lom neeg muaj pes tsawg leeg ntawmS355j2wp(ibEN 10025-5), cov ntsiab lus hauv qab no yog qhov tseem ceeb rau nwsHuab Cua Kuj:
1. Cov huab cua zoo tshaj plaws
| Lub ntsiab | Lub luag haujlwm hauv huab cua tiv thaiv | Cov ntsiab lus raug (%) |
|---|---|---|
| Tooj Liab (Cu) | Cov qauv ntom ntom, cov khoom siv xeb (patina); inhibits ntxiv corrosion los ntawm thaiv cov pa / nkag mus nkag. | 0.25–0.55 |
| Chromium (cr) | Txhim kho xeb txheej ruaj khov los ntawm kev tsim cr₂o₃; txhim kho kom tsis kam rau kev lag luam / nroog muaj kuab paug. | 0.30–1.25 |
| Phosphorus (p) | Saib xyuas Patina tsim tau tab sis yuav tsum tau tswj kom tsis txhob ua yeeb yam. | 0.06–0.15 |
2. Txhawb cov ntsiab lus
| Lub ntsiab | Lub luag haujlwm hauv huab cua tiv thaiv | Cov ntsiab lus raug (%) |
|---|---|---|
| Npib tsib caug (ni) | Txhim kho kev nruj thiab corrosion tsis kam nyob rau hauv ib puag ncig hnyav (piv txwv li thaj chaw ntug hiav txwv). | Tsawg dua los yog sib npaug rau 0.65 |
| Silicon (si) | Ntxiv dag zog rau txheej xeb thiab txo cov spalling nyob rau hauv thermal cycling. | Tsawg dua los yog sib npaug rau 0.75 |
3. TSEEM CEEB TSHEEJ TSHWJ XEEB
Patina tsim:
4fe +3} {{} h2o}} h2} h2} h2} h2} cu / cr → cr feooh (Txheej tiv thaiv)
Synergistic nyhuv:
CU + CR + P muab los tsim ib txheej xeb10-30x qeeb qeebhauv kev xeb ntau dua cov roj carbon.
4. Kev sib piv nrog lwm qib
| Qib hlau | CU (%) | CR (%) | P (%) | Weathering Performance index (i) |
|---|---|---|---|---|
| S355j2wp | 0.25–0.55 | 0.30–1.25 | 0.06–0.15 | Ntau dua los yog sib npaug rau 6.5 |
| S355j0wp | 0.20–0.50 | 0.30–1.25 | 0.04–0.12 | Ntau dua los yog sib npaug rau 5.0 |
| ASTM A588 | 0.20–0.50 | 0.40–1.25 | Tsawg dua los yog sib npaug rau 0.04 | Ntau dua los yog sib npaug rau 6.0 |
* WUNCECHER INCOTE (i) {{{=% cu +% cr +% ni +% p × 10 *
5. Cov tswv yim cuam tshuam
Qhov kev ua tau zoo tshaj plaws: Xav tauntub dej / qhuav cyclesrau kev txhim kho patina (1-3 xyoos hauv huab cua huab cua sov).
Kev txwv:
Zam kev ua ntsev tsis tu ncua (chlorides cuam tshuam patina).
Cov ntsiab lus High-P yuav txo weldability (preheat ntau dua los yog sib luag rau 100℃pom zoo).
