SSAW Steel Pipe Welding Procedus For Gas Lines
SSAW simbi pombi, inozivikanwawo seyakadzika arc welded pombi, inowanzoshandiswa mukuisa gasi pombi nekuda kwekusimba kwayo uye simba.Zvisinei, kushanda kwepombi idzi kunoenderana zvakanyanya nemhando yewelding maitiro anoshandiswa panguva yekuiswa.Nzira dzisina kufanira welding dzinogona kukonzera majoini asina simba uye akakuvadzwa, zvichikonzera njodzi dzinogona kuitika uye kutadza kwehurongwa.
Mechanical Property
| simbi giredhi | shoma goho simba | Kusimba simba | Minimum elongation | Minimum impact simba | ||||
| Ukobvu hunotsanangurwa | Ukobvu hunotsanangurwa | Ukobvu hunotsanangurwa | at test temperature ye | |||||
| ＜16 | ＞16≤40 | ＜3 | ≥3≤40 | ≤40 | -20 ℃ | 0℃ | 20 ℃ | |
| S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Chimwe chezvinhu zvakakosha pakuona kutendeseka kwegasi pombi yekumisikidza uchishandisa spiral submerged arc welded simbi pombi ndiko kusarudzwa kweiyo yakakodzera welding process.Izvi zvinosanganisira kunyatsotariswa kwewelding nzira, filler zvinhu uye pre-weld kugadzirira.Pamusoro pezvo, kutevedzera indasitiri zviyero nemirau kwakakosha kuve nechokwadi chekuvimbika uye kuchengetedzeka kwegas linessystems.
Kugadzirira pre-welding kwakakosha kuti uve nechokwadi chekubudirira kusungirirwa kwe spiral yakanyura arc welded simbi mapaipi mukuisa gasi mutsetse.Izvi zvinosanganisira kunyatsocheneswa uye kutariswa kwepombi yepombi kuti ibvise chero tsvina kana kukanganisa kunogona kukanganisa kunaka kweweld.Uyezve, kuti uwane weld yakasimba uye yakavimbika, pombi inofanira kuyerwa nemazvo uye yakarongeka.
Munguva chaiyo yewelding process, kutarisisa kune zvakadzama uye kuomerera kune chaiyo tekinoroji kwakakosha.Kusarudza nzira yakakodzera yewelding, ingave TIG (tungsten inert gas welding), MIG (metal inert gas welding) kana SMAW (stick arc welding), inofanira kusarudzwa zvichienderana nezvinodiwa zvegasi pombi yekuisa.Pamusoro pezvo, kushandiswa kwepamusoro-mhando yekuzadza zvinhu uye nekuchenjerera maitirwo ewelding kwakakosha mukugadzira akavimbika uye akasimba welds anoenderana nezvinodiwa zvegasi pombi mashandiro.
Pamusoro pezvo, kuongorora kwemashure-weld uye kuyedza matanho akakosha ekuona weld mhando uye kutendeseka mukumisikidzwa kwepombi yegasi uchishandisa SSAW simbi pombi.Nzira dzisiri dzekuparadza dzekuyedza, dzakadai seye radiographic kuyedzwa uye ultrasonic bvunzo, dzinogona kubatsira kuona chero hurema hunogona kuitika kana discontinuities mumajoini akasungwa kuitira kuti agadziriswe nekukurumidza uye ave nechokwadi chekuvimbika kwegasi pombi yako.
Muchidimbu, maitirwo ewelding akakosha pakuisa mitsara yegasi uchishandisa spiral undermerged arc welded steel pombi.Kutendeseka uye kuchengetedzeka kwegasi pombi yako system kunoenderana nemhando yewelding yako, saka welding indasitiri zviyero uye zvakanakisa maitiro zvinofanirwa kuteverwa.Nekukoshesa kugadzirira kwakaringana pre-weld, hunyanzvi hwekugadzira welding, uye kunyatsoongorora post-weld, vanoisa pombi yegasi vanogona kuona kuvimbika uye kuchengetedzeka kweSSAW simbi pombi yekumisikidza kwegasi pombi yekushandisa.
