Mehala ea Khase e ka Tlas'a Lefatše - Phaephe ea Tšepe ea X65 SSAW
Phaephe e welletsoeng ka arc e spiral e kenelletseng ka metsing ke karolo ea bohlokoa ea boenjiniere ba phepelo ea metsi, indasteri ea petrochemical, indasteri ea lik'hemik'hale, indasteri ea motlakase, nosetso ea temo le kaho ea litoropo. Ho tenyetseha ha eona le ho tšepahala ha eona ho e entse e 'ngoe ea lihlahisoa tse mashome a mabeli tsa bohlokoa tse ntlafalitsoeng naheng ea rona, ho bontša bohlokoa ba eona le tšusumetso ea eona liindastering tse fapaneng.
Phaephe ea tšepe ea SSAWe etselitsoe ho tsamaisa metsi 'me e loketse hantle phepelo ea metsi le litsamaiso tsa ho ntša metsi. Kaho ea eona e tiileng e etsa hore e be ntle bakeng sa ho netefatsa phetiso ea metsi e sebetsang hantle le e tšepahalang. Ho phaella moo, e boetse e loketse lipalangoang tsa khase tse kang khase ea mashala, mouoane le khase ea peterole e metsi. Matla a eona a ho tsitlella le ho hanyetsa mafome li netefatsa phano ea khase e sireletsehileng le e sebetsang hantle 'me li fihlela litlhoko tse tiileng tsa litsamaiso tsa phano ea khase.
| Thepa ea Bohlokoa ea 'Mele le ea Lik'hemik'hale ea Liphaephe tsa Tšepe (GB/T3091-2008, GB/T9711-2011 le API Spec 5L) | ||||||||||||||
| E tloaelehileng | Kereiti ea Tšepe | Likarolo tsa Lik'hemik'hale (%) | Thepa e Tenyetsehang | Teko ea Tšusumetso ea Charpy (V notch) | ||||||||||
| c | Mn | p | s | Si | Tse ling | Matla a Tekanyo (Mpa) | Matla a ho Tenyetseha (Mpa) | (L0=5.65 √ S0)Sekhahla sa ho Otlolla sa mets(%) | ||||||
| boholo | boholo | boholo | boholo | boholo | motsotso | boholo | motsotso | boholo | D ≤ 168.33mm | D > 168.3mm | ||||
| GB/T3091 -2008 | Q215A | ≤ 0.15 | 0.25 < 1.20 | 0.045 | 0.050 | 0.35 | Ho eketsa Nb\V\Ti ho latela GB/T1591-94 | 215 | 335 | 15 | > 31 | |||
| Q215B | ≤ 0.15 | 0.25-0.55 | 0.045 | 0.045 | 0.035 | 215 | 335 | 15 | > 31 | |||||
| Q235A | ≤ 0.22 | 0.30 < 0.65 | 0.045 | 0.050 | 0.035 | 235 | 375 | 15 | >26 | |||||
| Q235B | ≤ 0.20 | 0.30 ≤ 1.80 | 0.045 | 0.045 | 0.035 | 235 | 375 | 15 | >26 | |||||
| Q295A | 0.16 | 0.80-1.50 | 0.045 | 0.045 | 0.55 | 295 | 390 | 13 | >23 | |||||
| Q295B | 0.16 | 0.80-1.50 | 0.045 | 0.040 | 0.55 | 295 | 390 | 13 | >23 | |||||
| Q345A | 0.20 | 1.00-1.60 | 0.045 | 0.045 | 0.55 | 345 | 510 | 13 | >21 | |||||
| Q345B | 0.20 | 1.00-1.60 | 0.045 | 0.040 | 0.55 | 345 | 510 | 13 | >21 | |||||
| GB/T9711-2011(PSL1) | L175 | 0.21 | 0.60 | 0.030 | 0.030 | Ho eketsa e 'ngoe ea likarolo tsa Nb\V\Ti kapa motsoako ofe kapa ofe oa tsona ka boikhethelo | 175 | 310 | 27 | E 'ngoe kapa tse peli tsa index ea ho tiea ha matla a tšusumetso le sebaka sa ho kuta li ka khethoa. Bakeng sa L555, sheba tekanyetso. | ||||
| L210 | 0.22 | 0.90 | 0.030 | 0.030 | 210 | 335 | 25 | |||||||
| L245 | 0.26 | 1.20 | 0.030 | 0.030 | 245 | 415 | 21 | |||||||
| L290 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 415 | 21 | |||||||
| L320 | 0.26 | 1.40 | 0.030 | 0.030 | 320 | 435 | 20 | |||||||
| L360 | 0.26 | 1.40 | 0.030 | 0.030 | 360 | 460 | 19 | |||||||
| L390 | 0.26 | 1.40 | 0.030 | 0.030 | 390 | 390 | 18 | |||||||
| L415 | 0.26 | 1.40 | 0.030 | 0.030 | 415 | 520 | 17 | |||||||
| L450 | 0.26 | 1.45 | 0.030 | 0.030 | 450 | 535 | 17 | |||||||
| L485 | 0.26 | 1.65 | 0.030 | 0.030 | 485 | 570 | 16 | |||||||
| API 5L (PSL 1) | A25 | 0.21 | 0.60 | 0.030 | 0.030 | Bakeng sa tšepe ea sehlopha sa B, Nb+V ≤ 0.03%; bakeng sa tšepe ≥ sehlopha sa B, ho eketsa Nb kapa V kapa motsoako oa tsona ka boikhethelo, le Nb+V+Ti ≤ 0.15% | 172 | 310 | (L0=50.8mm)e tla balwa ho latela foromo e latelang:e=1944·A0 .2/U0 .0 A: Sebaka sa sampole ka mm2 U: Matla a fokolang a ho thaepa a boletsoeng ka Mpa | Ha ho letho kapa efe kapa bobedi ba matla a tshusumetso le sebaka sa ho kuta tse hlokahalang e le tekanyetso ya ho tiya. | ||||
| A | 0.22 | 0.90 | 0.030 | 0.030 | 207 | 331 | ||||||||
| B | 0.26 | 1.20 | 0.030 | 0.030 | 241 | 414 | ||||||||
| X42 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 414 | ||||||||
| X46 | 0.26 | 1.40 | 0.030 | 0.030 | 317 | 434 | ||||||||
| X52 | 0.26 | 1.40 | 0.030 | 0.030 | 359 | 455 | ||||||||
| X56 | 0.26 | 1.40 | 0.030 | 0.030 | 386 | 490 | ||||||||
| X60 | 0.26 | 1.40 | 0.030 | 0.030 | 414 | 517 | ||||||||
| X65 | 0.26 | 1.45 | 0.030 | 0.030 | 448 | 531 | ||||||||
| X70 | 0.26 | 1.65 | 0.030 | 0.030 | 483 | 565 | ||||||||
E 'ngoe ea lits'ebetso tse ka sehloohong bakeng sa liphaephe tsa rona tsa tšepe tse spiral submersible arc welded kemohala oa peterole o ka tlas'a lefatšeKa boleng ba eona bo phahameng le ts'ebetso, ke khetho ea pele bakeng sa ho aha marang-rang a tšepahalang le a bolokehileng a lipalangoang tsa khase ea tlhaho.
Phaephe ea mohala oa X65 SSAWe hahiloe ka thepa ea maemo a holimo e netefatsang matla a phahameng le ho tšoarella. Sena se etsa hore e be ntle bakeng sa lits'ebetso tse hlokang khatello e phahameng le ho hanyetsa mabaka a tikoloho. Ho tšoaneleha ha eona bakeng sa ho kenngoa ka tlas'a lefatše ho totobatsa moralo oa eona o tiileng le bokhoni ba ho mamella maemo a thata, e leng se etsang hore e be tharollo ea khetho bakeng sa merero ea liphaephe tsa khase tse ka tlas'a lefatše.
Jwalo ka sehlahiswa se tshepahalang le se pakilweng, diphaephe tsa rona tsa tshepe tse weldisitsweng ka hara arc tse spiral di sebediswa haholo diindastering le mererong ya meralo ya motheo ka lebaka la tshebetso ya tsona e phahameng, ho tshwarella le ho tshepahala. Kaho ya yona ya boleng bo hodimo e etsa hore e be kgetho ya pele bakeng sa ditsamaiso tsa ho tsamaisa metsi le kgase, haholoholo moleng wa kgase o ka tlasa lefatshe moo polokeho le katleho di leng bohlokwa haholo.
Ka bokhutšoanyane, phaephe ea tšepe e phuthetsoeng ka arc e koahetsoeng ka spiral ke sehlahisoa se setle se etselitsoeng ho fihlela litlhoko tse fapaneng tsa litsamaiso tsa phepelo ea metsi le khase. Ka lebaka la ho tenyetseha le ho tšepahala ha eona, e fetohile karolo ea bohlokoa liindastering tse fapaneng le mererong ea meralo ea motheo, haholo-holo mohala oa khase o ka tlas'a lefatše. Boleng ba eona bo ikhethang le ts'ebetso li etsa hore e be letlotlo la bohlokoa ho netefatseng marang-rang a lipalangoang tsa khase a sebetsang hantle le a bolokehileng. Tšepa botšepehi le ts'ebetso ea liphaephe tsa rona tsa tšepe tse phuthetsoeng ka arc tse koahetsoeng ka spiral bakeng sa litlhoko tsohle tsa hau tsa lipalangoang tsa metsi le khase.








