1. Cov khoom sib xyaw & cov khoom tseem ceeb
Q:Dab tsi txhais cov tshuaj / txhua yam khoom ntawm E460K2?
A:
Chemical (wt%):
C:Tsawg dua lossis sib npaug rau 0.20 |Mn: 1.00–1.70 | P:Tsawg dua lossis sib npaug rau 0.020 |S:Tsawg dua lossis sib npaug rau 0.015 |Al:Ntau dua los yog sib npaug rau 0.020 (txhim kho cov nplej).
Mechanical:
Yield zog (sᵧ):Ntau tshaj lossis sib npaug rau 460 MPa |Tensile (sₜ):550-720 MPa.
Elongation (A₅):Ntau dua lossis sib npaug li 17% |Kev cuam tshuam (KV):Ntau dua lossis sib npaug rau 40J ntawm -40℃(K2npe).
Nco tseg:Cov"K2" lusUa kom muaj qhov tshwj xeeb qis -kub toughness rau Arctic / huab cua huab cua.
2. Kev tsim khoom & qauv ua raws
Q:E460K2 raj yog tsim thiab ntawv pov thawj li cas?
A:
Txheej txheem:nkaus xwbseamless(kub- dov + txias- kos rau qhov tseeb).
Kev kho cua sov:Quenching & tempering (Q&T) yuav tsum tau (EN 10297-1 §6.3).
Ntsiab Standard:TS EN 10297-1 rau kev siv tshuab ua haujlwm siab / cov qauv tsim
3. Dimensional Tolerances
Q:Dab tsi yog qhov tseem ceeb ntawm qhov tolerances?
A:
| Parameter | Ua siab ntev | Kev cuam tshuam |
|---|---|---|
| OD | ± 0.8% (min ± 0.4 hli) | Xyuas kom muaj kev cuam tshuam haum |
| Phab ntsa Thickness | ± 8% (min ± 0.4 hli) | Tseem ceeb heev rau lub neej qaug zog |
| Kev ncaj | Tsawg dua lossis sib npaug li 1.2 mm / m | Qhov tseem ceeb rau rotating shafts |
4. Daim Ntawv Thov & Kev Txwv
Q:E460K2 feem ntau siv nyob qhov twg?
A:
Ib puag ncig zoo heev:Offshore cua monopiles, Arctic roj / roj pipelines.
Heavy Engineering: Mining drill rods, hydraulic cylinders (>700 bar).
Zam:
Temperatures >600℃(kev pheej hmoo ntawm temper embrittlement).
Uncoated siv hauv marine/sour service (H₂S ib puag ncig).
5. Kev lees paub zoo & ntawv pov thawj
Q:Yuav ua li cas thiaj paub tseeb?
A:
Yuav tsum xeem:
Tensile (EN ISO 6892-1)|Kev cuam tshuam (ISO 148-1 ntawm -40 degree).
NDT:100% ultrasonic (EN 10246-1) + Sib nqus particle (ISO 10893-8).
Cov ntawv pov thawj:EN 10204 3.2|PED 2014/68/EU (Qeb IV).
