Mehala ea Khase e ka Tlas'a Lefatše - Phaephe ea Tšepe ea X65 SSAW

Tlhaloso e Khutšoanyane:

Re hlahisa phaephe ea rona e ncha ea tšepe ea SSAW, sehlahisoa sa boleng bo holimo se etselitsoeng lits'ebetso tse fapaneng, haholo-holo liphaephe tsa khase ea tlhaho tse ka tlas'a lefatše. Phaephe ena ea mohala oa X65 SSAW e sebelisoa haholo ho tjheseletsa liphaephe tsa lipalangoang tsa mokelikeli, meaho ea tšepe, metheo ea liqubu, jj. Ka ts'ebetso ea eona e phahameng le ho tšoarella, sehlahisoa sena se nkoa e le sa bohlokoa bakeng sa liindasteri tse fapaneng le merero ea meralo ea motheo.


Qaqiso ea Sehlahisoa

Li-tag tsa Sehlahisoa

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 Metsi ea ka Tlas'a Lefatše

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.

 


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