Ob Chav Submerged Arc Welded Pipes Rau Txhim Kho Cov Txheej Txheem Zoo
Qhia:
Hauv kev ua haujlwm ntawm kev tsim vaj tsev, qhov tseem ceeb ntawm kev siv cov khoom zoo thiab kev tsim kho tsis tuaj yeem ua dhau los.Ntawm ntau yam khoom siv hauv kev tsim kho, cov kav dej ua lub luag haujlwm tseem ceeb.Peb yuav tso lub teeb rau qhov tseem ceeb ntawm ob lub welded kav thiab tshawb xyuas lawv cov yam ntxwv, cov txiaj ntsig thiab seb lawv tuaj yeem pab txhim kho kev ncaj ncees li cas.
Kawm paub txog ob chav welded kav:
Ob chav welded yeeb nkab, tseem hu ua ob chav submerged arc welded yeeb nkab (DSAW Pipes), yog tsim los ntawm submerged arc vuam txheej txheem.Cov cuab yeej siv tau txuas mus rau qhov ntev ntawm ob daim hlau sib cais, muab kev sib txuas ruaj khov thiab txuas ntxiv.Cov kav dej no feem ntau yog siv rau hauv cov ntawv thov siab, cov kav dej hauv av thiab cov pa roj carbon monoxide, kev tshawb nrhiav roj, thiab cov chaw tawm ntug dej hiav txwv.
Mechanical Property
| qib steel | yam tsawg kawg nkaus yield zog | Tensile zog | Tsawg kawg elongation | Yam tsawg kawg nkaus lub zog | ||||
| Specified thickness | Specified thickness | Specified thickness | ntawm qhov ntsuas kub ntawm | |||||
| 16 | ＞ 16 ≤ 40 | ＜3 | ≥3≤40 | ≤ 40 | -20 ℃ | 0 ℃ | 20 ℃ | |
| S235 JRH | 235 | 225 | 360-510 : kuv | 360-510 : kuv | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 : kuv | 410-560 : kuv | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 : kuv | 470-630 : kuv | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Txhim khu kev ncaj ncees structural:
Qhov laj thawj tseem ceeb rau kev sivob welded yeeb nkabyog lawv lub peev xwm los txhim kho kev ncaj ncees.Nrog seamless thiab muaj zog welds, cov kav dej no muaj kev ntxhov siab zoo thiab ua haujlwm ntev.Ob chav weld kom ntseeg tau tias cov yeeb nkab tuaj yeem tiv taus siab dua, ua rau nws zoo tagnrho rau cov ntawv thov tseem ceeb uas ib qho kev sib txuas tuaj yeem cuam tshuam cov qauv kev nyab xeeb.Qhov txheej txheem vuam dual no tshem tawm qhov muaj peev xwm ntawm cov xau lossis tawg, ua kom ntseeg tau ntev ntawm koj cov kav dej.
Siab zog rau qhov hnyav piv:
Ob chav welded yeeb nkab muaj lub zog zoo heev rau qhov hnyav piv.Vim cov txheej txheem vuam, cov kav dej no tau txo cov phab ntsa tuab thiab sib dua thaum tuav cov txheej txheem rigidity.Qhov kev sib piv ntawm lub zog-rau-qhov hnyav no txo qis tag nrho cov khoom thauj ntawm cov qauv kev txhawb nqa, ua rau nws muaj txiaj ntsig zoo rau cov haujlwm loj xws li txuas hniav, yees, thiab cov tsev siab.
Corrosion kuj:
Lwm qhov zoo dua ntawm ob chav welded yeeb nkab yog nws cov corrosion kuj.Ib lub taub hau tig tig tau tsim muaj zog tiv thaiv sab nraud yam, suav nrog kev ya raws, tshuaj lom neeg thiab cov av.Qhov no tiv thaiv sab hauv ntawm cov yeeb nkab los ntawm kev sib cuag ncaj qha nrog cov neeg ua haujlwm corrosive, kom ntseeg tau tias lub neej ua haujlwm ntev dua piv rau cov kav dej.Cov khoom tiv thaiv corrosion ntawm cov kav dej no tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau kev lag luam roj thiab roj, qhov twg cov kav dej feem ntau ntsib cov xwm txheej hnyav.
Tshuaj muaj pes tsawg leeg
| Qib hlau | Hom de-oxidation a | % los ntawm huab hwm coj, siab kawg | ||||||
| Steel npe | Hlau tooj | C | C | Si | Mn | P | S | Nb |
| S235 JRH | 1, 0039 | FF | 0,17 ib | — | 1,40 ib | 0,040 ua | 0,040 ua | 0.009 ib |
| S275J0H | 1.0149 ib | FF | 0,20 ib | — | 1,50 ib | 0,035 ib | 0,035 ib | 0,009 ib |
| S275J2H | 1, 0138 | FF | 0,20 ib | — | 1,50 ib | 0,030 ua | 0,030 ua | — |
| S355J0H | 1.0547 ib | FF | 0,22 ib | 0,55 ib | 1,60 ib | 0,035 ib | 0,035 ib | 0,009 ib |
| S355J2H | 1.0576 ib | FF | 0,22 ib | 0,55 ib | 1,60 ib | 0,030 ua | 0,030 ua | — |
| S355K2H | 1, 0512 | FF | 0,22 ib | 0,55 ib | 1,60 ib | 0,030 ua | 0,030 ua | — |
| ib.Txoj kev deoxidation yog tsim raws li hauv qab no: FF: Ua tiav cov hlau uas muaj nitrogen khi cov ntsiab lus kom txaus los khi muaj nitrogen (xws li min. 0,020% tag nrho Al lossis 0,015% soluble Al). b.Tus nqi siab tshaj plaws rau nitrogen tsis siv yog tias cov tshuaj muaj pes tsawg leeg pom qhov tsawg kawg nkaus Al ntsiab lus ntawm 0,020% nrog qhov tsawg kawg nkaus Al / N piv ntawm 2: 1, lossis yog tias muaj lwm yam N-binding ntsiab.Cov ntsiab lus N-binding yuav tsum tau sau rau hauv Cov Ntaub Ntawv Tshawb Fawb. | ||||||||
Cov yam ntxwv ua haujlwm tau zoo:
Qhov du, tsis muaj kev cuam tshuam sab hauv ntawm ob chav welded yeeb nkab tso cai rau cov yam ntxwv ntws zoo.Tsis zoo li lwm cov kav dej uas muaj cov khoom siv sab hauv los yog kev cuam tshuam, cov kav dej no ua kom cov kav dej txuas mus tas li thiab txawm tias cov dej ntws los yog cov pa roj, yog li txo qis kev sib txhuam.Cov yam ntxwv ntws zoo ntawm ob chav welded yeeb nkab pab txhim kho kev ua tau zoo ntawm ntau yam kev lag luam, suav nrog cov nroj tsuag petrochemical, refineries thiab cov chaw kho dej.
Hauv kev xaus:
Hauv kev xaus, ob chav welded yeeb nkab yog ib qho tseem ceeb ntawm cov yeeb nkab uas ua kom muaj kev ncaj ncees ntawm ntau yam kev tsim kho.Lawv cov khoom tshwj xeeb, suav nrog seamless welds, siab zog-rau-hnyav piv, corrosion kuj thiab muaj txiaj ntsig zoo, ua rau lawv xaiv thawj zaug rau cov ntawv thov uas xav tau kev ntseeg siab, durability thiab nqi-zoo.Los ntawm kev siv ob lub welded yeeb nkab, engineers thiab cov neeg cog lus tuaj yeem ua kom ntev ntev thiab kev nyab xeeb ntawm kev ua haujlwm tseem ceeb, ua rau nws muaj txiaj ntsig zoo hauv kev tsim kho thiab engineering.
Hauv cov ntsiab lus, S235 J0 kauv steel yeeb nkab muab qhov tsis sib haum xeeb thiab ua haujlwm ntev rau kojloj txoj kab uas hla welded pipexav tau.Nrog lawv cov txheej txheem tsim khoom siab tshaj, kev vuam zoo tshaj plaws thiab kev tshuaj xyuas zoo, peb cov khoom tau lees tias yuav dhau qhov koj xav tau.Trust Cangzhou Spiral Steel Pipe Group Co., Ltd.'s kev txawj ntse thiab kev paub dhau los kom tau raws li tag nrho koj cov yeeb nkab steel xav tau.
