S690Q vs S690QL: Decoding "L" nan segondè - fòs asye
(690 MPa sede|EN 10025-6 Creole)
Diferans debaz la: Low - Tanperati andirans
S690Q: Rezistans minimòm enpak teste nan -20 degre (30J mwayèn). → Itilize tipik: trepye nan klima tanpere, ekipman karyè.
S690QL:Sètifye pou -40 degre ak anba a (pi gran pase oswa egal a 40J enpak severite). → Itilizasyon kritik: tiyo Arctic, tribin lanmè, machin min nan Siberia.
Risk Misapplication: Sèvi ak S690Q ki anba a -20 Risk Risk Fraktur (egzanp, Yon Kanadyen Forage Rig efondreman nan 2020).
Diferans chimik ak pwosesis
Paramèt690qs690qlmax sulfur (s) 0.025%0.010%z - direksyon testingOptionAlmandatory (Z15-Z35) CET* (kabòn ekivalan) mwens pase oswa egal a 0.47 mwens pase oswa egal a 0.45 (enhanced soudabilite)*** iven I. (Mn+Mo)/10 + (Cr+Cu)/20 + Ni/40
Poukisa "L" zafè yo nan pwojè reyèl
Turbines van lanmè: S690QL yo itilize nan fondasyon nan lanmè -30 degre (egzanp, Hornsea 2, UK). To echèk materyèl: 0.2% vs 5% pou S690Q.
Enpak pri: S690QL koute 15% plis men pwolonje lavi sèvis pa 8-12 ane nan anviwònman korozivite.
Soudure: S690QL mande pou prechofe strik (150-250 degre) yo anpeche fann idwojèn.
Estanda Global & Ekivalan
Ewòp (EN 10025-6): S690Q=S690Q / S690QL=S690QL
Lachin (GB / T 16270): S690Q ≈ Q690D / S690QL ≈ Q690E (sevè ba - kondisyon temp)
USA (ASTM): Toupre - ekivalan a A514 Klas Q (men manke obligatwa -40 degre tès).
Lis Kontwòl Desizyon ou an
Chwazi S690Q si:
- Operating Temps> -20 degre
- Bidjè sansiblite egziste
- Epesè <40 mm (pa gen z - estrès)
Chanje nan S690QL lè:
- Anbyen tan mwens pase oswa egal a -40 degre (egzanp, forage polè)
- Plak epè (pi gran pase oswa egal a 40mm) sipòte tansyon soude
- Ekspozisyon idwojèn (tuyaux, H₂ Depo)
Pou nenpòt kesyon oswa nenpòt kesyon, tanpri kontakte mwen lib.
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| Lòt plak asye | ||||
| Non | Materyo | Spesifikasyon (mm) | Tòn | Remake |
| Ba alyaj | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J 2+ N, SS400, SA302GRC, S275NL, 35CRMO | 6 - 350 | 5788.56 | Nòmalizasyon, apeze, kontwole woule, woule cho, woule cho, 1ye enspeksyon, enspeksyon 2nd, 3yèm enspeksyon |
| Plak veso presyon | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SA285, SA387Gr11, SA387Gr12, SA387Gr22, P265, P295, P355GH, Q245R (R - HIC), Q345R (R - HIC) | 3 - 300 | 8650 | Nòmalizasyon, apeze, kontwole woule, woule cho, woule cho, 1ye enspeksyon, enspeksyon 2nd, 3yèm enspeksyon |
| Segondè - Plak fòs | WH785D/E, Q960D/E, Q890D/E, WH60D/E, WH70B, Q550D, Q590D, Q690D/E | 8 - 120 | 3086.352 | Pasè ak apeze |
| Mete - Plak rezistan | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Pasè ak apeze |
| Plak pon | Q235QC, Q345QC, Q370QC, Q420QC, Q345QDNH, Q370QDNH, A 709 - 50 f - 2, yon 709 - 50 t - 2} | 8 - 200 | 2853.621 | Cho woule, normalized, cho woule kontwole woule, janm pase ak apeze + andirans ak fragilite |
