1. Cov khoom sib xyaw & cov khoom tseem ceeb
Q:Dab tsi yog cov khoom siv tshuaj thiab cov khoom siv ntawm E235 steel?
A:
Chemical Composition (wt%):
C:Tsawg dua lossis sib npaug rau 0.17 |Mn: 0.40–1.20 | P:Tsawg dua lossis sib npaug rau 0.030 |S:Tsawg dua lossis sib npaug li 0.025.
Mechanical Properties:
Yield zog (sᵧ):Ntau tshaj lossis sib npaug rau 235 MPa |Tensile zog (σₜ):360-510 MPa.
Elongation (A₅):Ntau dua lossis sib npaug li 25% |Hardness:Tsawg dua lossis sib npaug li 140 HB.
Nco tseg:E235 yog ib qho tsis yog- alloy steel nrog zoo weldability (Ceq Tsawg dua lossis sib npaug rau 0.36).
2. Kev tsim cov qauv & txheej txheem
Q:Yuav ua li cas EN 10297-1 E235 raj tsim?
A:
Txheej txheem:Seamless (kub-ua tiav lossis txias- kos) lossis welded (ERW/SAW).
Kev kho cua sov:Zoo li qub lossis kev ntxhov siab-tso tseg (raws li EN 10297-1).
Ntsiab Standard:TS EN 10297-1 Seamless ncig steel raj rau kev siv tshuab / engineering
3. Dimensional Tolerances
Q:Dab tsi kam rau ua rau cov hlab no?
A:
| Parameter | Kev kam rau siab (EN 10297-1) |
|---|---|
| OD (D) | ± 1.0% (min ± 0.5 hli) |
| Phab ntsa Thickness | ± 10% (min ± 0.3 hli) |
| Kev ncaj | Tsawg dua los yog sib npaug li 1.5 mm / m |
4. Daim ntawv thov & tsim nyog
Q:E235 feem ntau siv nyob qhov twg?
A:
General Engineering:Hydraulic thooj voos kheej kheej, structural Cheebtsam.
Automotive:Chassis qhov chaw, tso pa tawm (txias-kos).
Tsawg-Kev thauj mus los ntawm cov dej siab:Cov kav dej / roj av (welded variants).
Zam: High-temperature (>350 degree) los yog corrosive ib puag ncig (siv alloy / stainless hlau).
5. Kev Tswj Xyuas Zoo & Ntawv Pov Thawj
Q:Qhov zoo validated li cas?
A:
Kev kuaj:Tensile (EN ISO 6892-1), hardness (EN ISO 6506-1), hydrostatic (yeem).
Ntawv pov thawj:EN 10204 3.1/3.2 zeb daim ntawv pov thawj, PED 2014/68/EU rau kev siv siab.
NDT:Ultrasonic (EN 10246-1) lossis eddy tam sim no (EN 10246-2) rau kev kuaj pom tsis raug.
