Muab kauv welded steel yeeb nkab rau cov pa roj av nkab yeeb nkab
Qhia:
Natural Undergelines ua si lub luag haujlwm tseem ceeb hauv kev xa cov khoom muaj nqis rau tsev, kev lag luam thiab kev lag luam. Txhawm rau kom muaj kev nyab xeeb thiab ua haujlwm ntawm cov raj dej no, nws yog qhov tseem ceeb siv cov ntaub ntawv raug thiab cov txheej txheem vuam thaum lub sijhawm kev tsim kho. Peb yuav tshawb txog qhov tseem ceeb ntawm cov kauv welded steel yeeb nkab thiab qhov tseem ceeb ntawm kev ua raws li kev ua kom haum flaw txheej txheem thaum ua haujlwm nrogUnderground Nkauj Yeeb Nkab.
Muab kauv welded yeeb nkab:
Muab kauv cov yeeb nkab welded yog nrov nyob rau hauv kev tsim kho ntawm cov roj av hauv av vim nws lub zog hauv lub zog thiab lub zog ruaj khov. Cov kav dej no yog tsim los ntawm kev khoov cov hlua khi txuas ntxiv ntawm cov hlau ua kom zoo nkauj thiab mam li vuam nws raws cov nqaws. Qhov tshwm sim yog cov kav dej nrog muaj zog, sib khi pob qij txha uas tuaj yeem tiv taus cov kev ntsuas sab nraud tseem ceeb thiab hloov mus rau hauv av. Tus qauv tshwj xeeb no ua rauMuab kauv welded steel yeeb nkabQhov zoo tagnrho rau cov raj hauv av uas ruaj khov yog qhov tseem ceeb.
Cov Cuab Yeej Cuab Yeej Cuab Yeej
| Qib A | Qib B | Qib C | Qeb D | Qib E | |
| Pepred lub zog, min, MPa (KSI) | 330 (48) | 415 (60) | 415 (60) | 415 (60) | 445 (66) |
| Lub zog tensile muaj zog, min, MPa (KSI) | 205 (30) | 240 (35) | 290 (42) | 315 (46) | 360 (52) |
Tshuaj Muaj Tshuaj
| Lub ntsiab | Muaj pes tsawg leeg, max,% | ||||
| Qib A | Qib B | Qib C | Qeb D | Qib E | |
| Pa roj carbon | 0.25 | 0.26 | 0.28 | 0.30 | 0.30 |
| Tus kws dai txiv manganese | 1.00 | 1.00 | 1.20 | 1.30 | 1.40 |
| Phosphorus | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
| Leej mos | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Hydrostatic Kev Ntsuam Xyuas
Txhua qhov ntev ntawm cov yeeb nkab yuav tsum raug sim los ntawm cov khw mus rau lub tshuab cua hydostatic Lub siab yuav tsum txiav txim siab los ntawm kab sib luag hauv qab no:
P = 2st / d
Kev tso cai sib txawv hauv qhov hnyav thiab qhov ntev
Txhua qhov ntev ntawm cov yeeb nkab yuav tsum tau sib cais thiab nws qhov hnyav yuav tsis sib txawv ntau dua 10% dhau los yog nws qhov hnyav, suav siv nws qhov ntev thiab qhov hnyav rau ib ntu ntev.
Cov taub sab nraud yuav tsis sib txawv ntau dua ± 1% los ntawm cov kev cai tshwj xeeb sab nraud ntawm lub taub.
Phab ntsa tuab ntawm txhua qhov taw tes yuav tsum tsis ntau tshaj 12.5% nyob rau hauv cov phab ntsa dicently.
Qho ntev
Ib Leeg Random ntev: 16 txog 25ft (4.88 txog 7.62m)
Ob chav random ntev: ntau dua 25ft rau 35ft (7.62 txog 10.67m)
Uniform ntev: kev tiv thaiv kev sib tw ± 1in
Xaus
Cov yeeb nkab nqa yuav tsum tau muab cov ntaub nyias nyias xaus, thiab cov burrs ntawm qhov kawg yuav raug tshem tawm
Thaum cov yeeb nkab kawg tau teev tseg rau Bevel xaus, lub kaum sab xis yuav yog 30 txog 35 degree
Yeeb Nkab Vuam Cov Txheej Txheem:
Raws caiYeeb Nkab Wrding Cov Txheej Txheemyog qhov tseem ceeb rau lub durability thiab kev nyab xeeb ntawm cov pipelines hauv av. Ntawm no yog ob peb qhov tseem ceeb los xav txog:
1. Cov Kws Dhia Muaj Peev Xwm:Cov neeg muaj txuj ci tsim nyog thiab kev paub txog cov tsiaj txhu tau ntiav tau raug ntiav tau, kom lawv muaj cov ntawv pov thawj tsim nyog thiab kev tshaj lij los lis cov txheej txheem vuam kev sib tw ua kom muaj pa roj pipelines. Qhov no yuav pab txo qis kev pheej hmoo ntawm vuam tsis xws luag thiab tej yam xau.
2. Kev npaj ua ke thiab tu:Kev npaj kom tsim nyog yog qhov tseem ceeb ua ntej vuam. Qhov no suav nrog kev tshem tawm cov av, khib nyiab lossis cov tsis huv uas yuav cuam tshuam cuam tshuam rau kev ntseeg siab ntawm Weld. Tsis tas li ntawd, beveling cov qauv yeeb nkab pab tsim kom muaj zog welded sib koom ua ke.
3. VUAM cov tswv yim thiab tsis muaj:Yog cov kev siv vuam thiab cov tsis raug cai yuav tsum tau ua raws li cov khoom siv zoo. Txoj kev vuam yuav tsum txiav txim siab xws li cov yeeb nkab tuab, siv tshuaj tua kab ntawv, thiab lwm yam.
4. Kev tshuaj xyuas thiab kuaj:Tas los tshuaj xyuas thiab kuaj ntawm Weld yog qhov tseem ceeb kom paub meej tias nws zoo thiab kev ntseeg siab. Cov thev naus laus zis xws li kev sim ua tsis yog kev puas tsuaj lossis kev sim nyiaj, kev sim tshuaj ntxiv, tuaj yeem ua rau pom kev tsis taus uas muaj peev xwm ua tau kev ntseeg tau ntev ntawm cov raj xa dej.
Hauv kev xaus:
Kev tsim kho cov khoom lag luam hauv av uas siv cov kauv welded steel yeeb yuav tsum muaj kev ua tiav nrog cov txheej txheem vuam kom raug. Los ntawm kev ntiav cov wirding, ua tib zoo npaj cov pob qij txha, ua raws li kev tshuaj xyuas kom ruaj ntseg, peb tuaj yeem ua kom muaj kev nyab xeeb, siv taus, thiab ua haujlwm siv tau ntev, thiab ua haujlwm siv nyiaj siv tau, thiab ua haujlwm ruaj khov, kev ua haujlwm ntawm cov kav dej. Los ntawm ceev faj kom meej nyob rau hauv cov txheej txheem vuam, peb tuaj yeem ntseeg siab xa cov roj uas xav tau ntawm peb cov zej zog kom zoo thiab muaj kev nyab xeeb rau ib puag ncig.
