1. Ua cov kev txiav txim siab
Kub txoj kev (dov, Forging):
Ua tau zoo ntawm 850-1100℃(raug kub-ua haujlwm ntau), nrog deformation tiv taus zoo ib yam li S355jr. Txawm li cas los xij, nwssiab dua phosphorus (p) cov ntsiab lusTej zaum yuav nce qhov kev pheej hmoo qeeb yog tias ua tiav ze rau qhov ntsuas kub tsawg dua.
Txias (dabtsi yog khoov, txiav):
Yuav tsum tau20-30% Ntau Forcetshaj cov hlau me me vim nws cov ntsiab lus sib dhos (CU, CR).
Nquagcaij nkoj nthuav davNyob rau hauv precision nyob rau kev ua haujlwm.
Ntug bilking tej zaum yuav tshwm sim yog khoov radii dhau nruj (tsawg kawg voj radius ≈ 2 × thickness rau 90℃khoov).
2. Vuam & tshav kub-cuam tshuam (Haz)
Haz muag muag muagtuaj yeem tshwm sim, txo cov txiaj ntsig muaj zog los ntawm 10-15% ze ntawm Welds.
Preheating (100-150 degree)yog pom zoo kom tiv thaiv kev tawg txias vim nwsP cov ntsiab lus.
Tom qab-Weld kev kho cua sov feem ntau tsis tsim nyog tshwj tsis yog rau cov ntawv tseem ceeb.
3. Machining Cov Cwj Pwm
Tuam Kev Hnavyog 15-20% siab dua cov hlau me vim yog cov khoom siv xwb.
Qhov Machined ZooYuav tsum muaj:
Carbide Tootinging (qib K10-K20 rau kev tig)
Txo kev nrawm (20% qeeb dua rau S235)
Amle coolant kom tiv thaiv kev ua haujlwm hnyav
4. Kev sib piv deformation tiv taus
| Khoom | Kev txheeb ze deformation tiv taus (1= me me) | Sau ntawv |
|---|---|---|
| S355j0wp | 1.3-1.5 | Siab dua S235, tsawg dua AR400 A xeeb tiv thaiv-tiv taus cov hlau |
| S355jr | 1.2 | Baseline Txheej Txheem Hlau |
| Corten a | 1.4 | Zoo ib yam li S355j0wP |
5. Kev Pab Tswv Yim
Rau dabtsi yog khoov:Anneal ntawm 600-650℃yog ntau cov kauj ruam txias-tsim.
Rau Machining:Siv cov cuab yeej zoo tshaj plaws thiab peck drilling rau qhov tob tob.
Rau Vuam:Ua haujlwm cov hluav taws xob tsawg-hydrogen) (E7018) thiab tswj cov ntsuas hluav taws xob.
Cov Tswv Cuab cuam tshuam
Thaum s35555555555555555555555555555555555j0wp yogtsis dhau dhau rau deformation, nws ua tau:
✔ 10-15% cov tswv yim zoo dua rau kev sib sau cov vs. me me
✔ Kauj txheej tswj kev tswj hwm ntau dua cov qauv hlau
✔ Paub txog nwsAnisotropic Cwj Pwm(kev taw qhia lub zog hauv cov khoom siv)
