ASTM A131 Qib DH32Hlau Phaj Tshuaj Muaj Zog:
| Teem nqi | Cax | Si max | Mn | P max | S max | Als min | Ti max | Cu Max | Cr max | Ni max | Mo max |
| A131 Qib DH32 | 0.18 | 0.50 | 0.90-1.60 | 0.035 | 0.035 | 0.015 | 0.02 | 0.35 | 0.20 | 0.40 | 0.08 |
ASTM A131 Qib DH32 Hlau Hlau Cov Khoom Siv:
| Teem nqi | RM (MPA) | Re (mpa) min | Ib% min | AKV / JIN | ||||||
| Thiab degree | Tuab (mm) | |||||||||
| Tsawg dua los yog sib npaug rau 50 | > 50-70 | > 70-100 | ||||||||
| L | C | L | C | L | C | |||||
| A131 Qib DH32 | 440-570 | 315 | 22 | -20 | 31 | 22 | 38 | 26 | 46 | 31 |
Cov FAQ
1. Dab tsi ua rau qhov txawv AVTM A131 DH32 los ntawm AH32 hauv AH32 hauv cov ntawv thov marine?
Teb:
DH32 muajSuperior Tsawg-Kub KubNrog:
Zoo tib yam tawm tswv yim lub zog (ntau dua los yog sib luag rau 315 MPa)rau AH32
Txoj kev cuam tshuam stricter uas yuav tsum muaj ntawm -40 degree(vs. AH32's -20 degree)
Txhim Kho Cov Ncauj Kev Nyab Xeebrau kev pabcuam Arctic
Kev ntsuas Charpy yuav tsum muaj ASTM A673(Zaus h)
2. DH32 Hlau yuam hauv nkoj?
Teb:Daim ntawv thov tseem ceeb muaj xws li:
Ice-Chav Nyob Rau Hauv Lub Nkoj Hulls(PC6 / PC7 Pawg)
LNG Carrier Muaj Cov Tshuab(Thib ob teeb meem)
Offshore platform txhais cegNyob rau hauv cov cheeb tsam txias
Cov Kev Tshawb Fawb Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob
Ballast tso tsheb hlau loj hauv Arctic txoj kev
3. Dab tsi ua kom cov txheej txheem ua kom ntseeg tau tias DH32 qhov tsawg-kub siab ntseeg?
Teb:Qhov tseem ceeb vuam kev cai:
Preheating:125-175℃(tuab-nyob)
Cov tub lim hlau:AWS E8018-C2 rau smaw
Thaum tshav kub kub tswj:Tsawg dua los yog sib npaug rau 25 kj / cm (tiv thaiv haz embrittlement)
Tom qab Weld NDT: 100% UT + MT for thickness >20mm
PVTH Lus Pom Zoo: 600-630°C for thickness >30mm
Cim npe nrov: ASTM A131 DH32 Shrbuilding Steel phaj, Tuam Tshoj ASTM A131 DH32 Shructionilding Steel Phaj Chaw Tsim Tshuaj, Chaw muag khoom, Hoobkas
