Spiral Submerged Arc Welded Pipe In API 5L Line Pipe Applications
TheAPI 5L mutsetse pombichiyero chirevo chakagadzirwa neAmerican Petroleum Institute (API) chekufambisa gasi rechisikigo, oiri nemvura.Inodonongodza zvinodiwa pakugadzira pombi dzesimbi dzakasungwa uye inoisa nhungamiro yakasimba yemhando, kusimba uye kushanda kwepombi idzi.
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 | - | - | |||||
SSAW pombiinogadzirwa uchishandisa yakanyura arc welding process iyo inosanganisira kugadzira coil yesimbi kuita yakatenderedza chimiro uyezve kushandisa welding arc kusanganisa mipendero yekoiri pamwechete.
Imwe yemabhenefiti makuru ekushandisa spiral yakanyura arc welded pombi muAPI 5L mutsara pombi maapplication ndiko kugona kwavo kutsungirira mazinga akakwira emukati nekunze kumanikidza.Izvi zvinonyanya kukosha muindasitiri yemafuta uye gasi, uko mapaipi anoratidzwa kune yakanyanyisa mamiriro uye mitoro inorema.Kuvakwa kwakasimba kwepombi dzeSSAW kunoita kuti ive yakanaka kune mapaipi anoshanda pakumanikidza kwakanyanya uye tembiricha, achipa mhinduro yakavimbika uye inogara kwenguva refu yekufambisa kwezvinhu zvakakosha.
Pamusoro pezvo, kuchinjika kwe spiral undermerged arc welded pombi kunoita kuti zvive nyore kuisa nekuchengetedza, zvichiita kuti ive sarudzo inodhura yemapurojekiti ekuvaka mapaipi.Kugona kwavo kuchinjika uye kuenderana neakasikwa contours yenzvimbo inobvisa kudiwa kwezvinodhura uye zvinopedza nguva tsika yekukodzera kugadzira uye kunoderedza njodzi yekuvuza uye kutadza.Pamusoro pezvo, iyo yakatsetseka yemukati mepombi yeSSAW inoderedza kupokana uye kusagadzikana, zvichikonzera kuyerera kwakanyanya uye kuderera kwesimba rekushandisa.
Kuumbwa Kwemakemikari
| Simbi giredhi | Mhando ye de-oxidation a | % nehuwandu, huwandu | ||||||
| Zita resimbi | Nhamba yesimbi | 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.Iyo deoxidation nzira inosarudzwa seinotevera: FF: Simbi yakaurayiwa zvizere ine nitrogen inosunga zvinhu muhuwandu hunokwana kusunga nitrogen iripo (semuenzaniso min. 0,020 % yakazara Al kana 0,015 % soluble Al). b.Iyo yakanyanya kukosha yenitrogen isingashande kana kemikari ichiratidza huwandu hushoma hwese hweAl content ye0,020 % ine hushoma hweAl/N chiyero che2: 1, kana kana zvimwe zvakakwana zveN-binding zvinhu zviripo.Iyo N-inosunga zvinhu icharekodhwa muChinyorwa Chekuongorora. | ||||||||
Muchidimbu, kushandiswa kwe spiral yakanyura arc welded pombi muAPI 5L mutsara pombi maapplication inopa akatevedzana mabhenefiti ayo anoita kuti ive inoyevedza sarudzo yeoiri negasi indasitiri.Simba radzo, kusimba uye kuchinjika kunoita kuti zvive zvakanakira kushandiswa munzvimbo dzinoda, nepo kusununguka kwavo kwekuisa uye kuderera kwekugadzirisa zvinodiwa zvinopa mhinduro inodhura yemapurojekiti ekuvaka mapaipi.Sezvo kudiwa kwekuvimbika, kufambisa kwakanaka kweoiri, gasi rechisikigo uye mvura kuri kuramba kuchikura, kukosha kwe spiral yakanyura arc welded pombi muAPI 5L mutsetse pombi mwero haugone kuwedzeredzwa.Nekuita kwayo kwakaratidza uye kuita kwakasiyana-siyana,spiral yakanyura arc pipeyakagadzirirwa kuramba iri chikamu chakakosha chezvivakwa zvinofambisa hupfumi hwenyika.
