Muab kauv kav dej welded rau hauv av av roj pipelines en10219
Peb liMuab kauv welded kavyog qhov kev daws teeb meem zoo tagnrho rau cov phiaj xwm uas corrosion tsis kam thiab cov qauv txheej txheem kev ntseeg yog qhov tseem ceeb. Qhov tshwj xeeb muab kauv vuam cov txheej txheem tsis yog ua rau muaj lub zog ntawm cov yeeb nkab, tab sis kuj muab ib qho kev pheej hmoo ntawm cov dej xau thiab ua tsis tiav. Qhov no ua rau lawv haum tshwj xeeb rau cov chaw hnyav uas tau ntsib hauv cov ntawv thov hauv av.
Tus qauv E10219 ua kom peb cov kav dej ua kom muaj cov kav dej ua kom haum nrog qhov ntsuas thiab ua tau zoo, kom lawv tuaj yeem tiv thaiv cov kev ntxhov siab thiab kev sib tw ntawm cov roj nkev thauj mus los. Tsom ntsoov rau kev ua kom ntev thiab kev ntseeg tau, peb cov kauv welded kav dej yog tsim los muab kev ua tau zoo ntev, txo qis kev saib xyuas thiab hloov ntau zaus.
Cov Cuab Yeej Cuab Yeej Cuab Yeej
| qib hlau | Yam tsawg kawg nkaus xwb Zog MPa | Lub zog tensile | Yam tsawg kawg nkaus elongation % | Yam tsawg kawg nkaus cuam tshuam lub zog J | ||||
| Teev cov tuab mm | Teev cov tuab mm | Teev cov tuab mm | Ntawm sim ntsuas qhov kub ntawm | |||||
| <16 | > 1605 | <3 | ≥40 | I≤40 | -20 ℃ | 0 ℃ | 20 ℃ | |
| S235jrh | 235 | 22 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275j0h | 275 | 26 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275j2h | 27 | - | - | |||||
| S355j0h | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355j2h | 27 | - | - | |||||
| S355k2h | 40 | - | - | |||||
Tshuaj Muaj Tshuaj
| Qib hlau | Hom de-oxidation a | % los ntawm huab hwm coj, siab tshaj plaws | ||||||
| Hlau Npe Hlau | Hlau tooj | C | C | Si | Mn | P | S | Nb |
| S235jrh | 1.0039 | FF | 0,17 | - | 1,40 | 0,040 | 0,040 | 0.009 |
| S275j0h | 1.0149 | FF | 0,20 | - | 1,50 | 0,035 | 0,035 | 0,009 |
| S275j2h | 1.0138 | FF | 0,20 | - | 1,50 | 0,030 | 0,030 | - |
| S355j0h | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355j2h | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
| S355k2h | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
| a. Cov txheej txheem Deagidation yog tsim raws li hauv qab no:FF: Nkaus tua cov hlau uas muaj cov khoom siv nitrogen khi rau hauv cov nyiaj muaj peev xwm khi muaj nitrogen (piv txwv li min lossis 0,015% soluble al). b. Tus nqi siab tshaj plaws rau Nitrogen tsis siv yog tias cov tshuaj lom neeg muaj pes tsawg leeg ntawm 0,020% nrog tsawg kawg AL / N piv txog 2: 1, lossis yog tias muaj lwm cov n-khi cov khoom n-khi tam sim no. Cov n-khi cov ntsiab yuav tsum tau sau cia hauv daim ntawv tshuaj xyuas. | ||||||||
Ntxiv nrog rau lawv qhov kev tsim tawm, cov kav dej no yog lub teeb ci thiab yooj yim los lis, ua kom lub teeb tsa tau zoo dua thiab raug nqi. Txawm hais tias koj tau ua ib qho kev tso cai tshiab piping lossis txhim kho cov kav dej uas twb muaj lawm, peb cov kauv welded kav dej, hloov pauv, thiab ua raws li cov qauv kev lag luam.
Xaiv peb cov khoom siv welded welded rau koj cov roj av hauv av uas xav tau thiab paub txog kev thaj yeeb nyab xeeb uas los nrog siv cov khoom lag luam uas tau sib ntsibE10219Cov Qauv. Ntseeg peb cov kev cog lus rau kev ua tau zoo thiab ua tau zoo kom ntseeg tau tias kev nyab xeeb thiab kev ua tau zoo ntawm koj cov roj av.
