1. Cov khoom sib xyaw & cov khoom tseem ceeb
Q:Dab tsi yog qhov txhais cov yam ntxwv ntawm E315 steel?
A:
Chemical Composition (wt%):
C:Tsawg dua lossis sib npaug rau 0.22 |Mn: 0.90–1.60 | P:Tsawg dua lossis sib npaug rau 0.025 |S:Tsawg dua lossis sib npaug rau 0.020 |Si:Tsawg dua lossis sib npaug li 0.40.
Mechanical Properties:
Yield zog (sᵧ):Ntau tshaj lossis sib npaug rau 315 MPa |Tensile zog (σₜ):470-630 MPa.
Elongation (A₅):Ntau dua lossis sib npaug li 20% |Hardness:Tsawg dua lossis sib npaug li 180 HB.
Nco tseg:E315 yog asiab -lub zog tsis yog- hlau alloynrog nruab nrab weldability (Ceq Tsawg dua lossis sib npaug rau 0.45).
2. Kev tsim khoom & qauv ua raws
Q:EN 10297-1 E315 raj ua li cas?
A:
Txheej txheem:Feem ntauseamless(kub-ua tiav lossis txias- kos); welded variants (ERW / SAW) yuav tsum tau kuaj ntxiv.
Kev kho cua sov:Normalizing (880–920 degree) lossis kev ntxhov siab-relieving (ib EN 10297-1 §6.2).
Standard Scope:Npog cov raj raj raumechanical thiab general engineering lub hom phiaj.
3. Dimensional Tolerances
Q:Dab tsi kam rau ua rau E315 raj?
A:
| Parameter | Kev kam rau siab (EN 10297-1) | Kev thuam |
|---|---|---|
| OD (D) | ± 1.0% (min ± 0.5 hli) | Qhov tseem ceeb rau bearing fits |
| Phab ntsa Thickness | ± 10% (min ± 0.4 hli) | Muaj feem xyuam rau lub siab tsis kam |
| Kev ncaj | Tsawg dua los yog sib npaug li 1.5 mm / m | cuam tshuam kev sib dhos ua ke |
4. Daim Ntawv Thov & Kev Txwv
Q:E315 feem ntau siv nyob qhov twg?
A:
Heavy Machinery:Hydraulic thooj voos kheej kheej, crane booms (seamless).
Kev thauj mus los:Qag Cheebtsam, trailer ncej (txias-kos).
Zam:
Temperatures >450℃(kev pheej hmoo ntawm scaling).
Ib puag ncig corrosive heev (tshwj tsis yog coated).
5. Kev Ua Haujlwm Zoo & Kev Xeem
Q:Yuav ua li cas zoo validated rau E315 raj?
A:
Yuav tsum xeem:
Tensile (EN ISO 6892-1)|Hardness (EN ISO 6506-1)
Optional Tests:
Hydrostatic (EN ISO 10893-4)|Ultrasonic (EN 10246-1).
Cov ntawv pov thawj:
EN 10204 3.1/3.2|PED 2014/68/EU (Qeb II/III).
