Spiral Submerged Arc Welding In Oil Pipe Line Construction: Ho netefatsa Bophelo ba Tšebeletso le ho Tšepahala
Ithute ka HSAW:
Ho tjheseletsa arc ka metsing a Spiralke theknoloji e tsoetseng pele ea ho tjheseletsa e kopanyang melao-motheo ea ho tjheseletsa arc ka metsing le ho etsa spiral tube.Ho kenyelletsa ho sebelisa mokhoa o itirisang oa welding ho theha spiral weld e tsoelang pele ka ho fepa terata e tiileng ea ho tlatsa ka har'a arc e koahetsoeng ka flux.Mokhoa ona o tiisa li-welds tse tsitsitseng le tsa boleng bo phahameng, ho felisa kotsi ea mefokolo e tloaelehileng le mekhoa e meng ea welding.
lits'ebetso.
Thepa ea Mechini
| tšepe kereiti | bonyane matla a tlhahiso | Matla a tšepe | Bonyane bo bolelele | Matla a fokolang a ts'usumetso | ||||
| Botenya bo boletsoeng | Botenya bo boletsoeng | Botenya bo boletsoeng | ka mocheso oa teko ea | |||||
| ＜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 | - | - | |||||
Bohlokoa ba HSAW kahong ea lipeipi tsa oli:
1. Matla le ho tšoarella: E 'ngoe ea litšoaneleho tse ka sehloohong tsa HSAW ke bokhoni ba eona ba ho theha manonyeletso a matla, a matla a holimo.The continuous spiral weld e entsoeng ke thekenoloji ena e matlafatsa botšepehi ba sebopeho 'me e bohlokoa ho mamella likhatello tse phahameng, mocheso o feteletseng le maemo a tikoloho aopeipi ea oli melasefahleho nakong ea bophelo ba bona ba tšebeletso.
2. Bophelo bo bolelele le ho tšepahala ho matla: Lithapo tsa lipeipi tsa oli li lebeletsoe hore li sebetse ka mokhoa o se nang sekoli ka lilemo tse mashome, li tsamaisa oli ntle le ho lutla kapa ho hlōleha.HSAW e bapala karolo ea bohlokoa ho finyelleng bophelo bo bolelele ba ts'ebeletso ka ho etsa bonnete ba ho ajoa ha mocheso oa tjheseletsa, ho fokotsa khatello ea maikutlo, le ho thibela ho qala ha crack le ho ata - lintlha tsohle tse tlatsetsang ho ts'epahala ka kakaretso ha phala.
3. Kaho e sebetsang hantle: HSAW e khona ho tsoela pele ho tjheseletsa likarolo tse telele tsa liphaephe, ka hona e sebetsa hantle haholo kahong ea lipeipi.Mokhoa ona o fokotsa nako ea ho cheselletsa, o eketsa tlhahiso, o fokotsa haholo litšenyehelo tsa kaho, 'me o thusa ho phethoa ka nako ea morero.
4. Tlhokomelo e fokotsehileng le ho lokisoa: Ka ho fana ka li-welds tsa boleng bo phahameng, tse se nang sekoli, HSAW e fokotsa tlhokahalo ea ho lokisoa nakong e tlang kapa ho fokotsa nako e amanang le tlhokomelo.Liphaephe tsa oli tse hahiloeng ka mokhoa ona ha li na monyetla oa ho lutla kapa ho hloleha, ho ntlafatsa polokeho le ho eketsa ts'ebetso e sebetsang hantle.
5. Melemo ea tikoloho: HSAW e netefatsa tlhahiso ea li-welds tse nepahetseng ka ho nepahala ho phahameng.Sena se fokotsa monyetla oa ho hola ha lipeipi le ho lutla ha oli ka mor'a moo, ho sireletsa tikoloho likoluoeng tse ka bang teng tse amanang le ho hloleha ha lipeipi.
Sebopeho sa Lik'hemik'hale
| Kereiti ea tšepe | Mofuta oa de-oxidation a | % ka boima, boholo | ||||||
| Lebitso la tšepe | Nomoro ea tšepe | 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.Mokhoa oa deoxidation o khethiloe ka tsela e latelang: FF: Tšepe e bolailoeng ka ho feletseng e nang le likarolo tse tlamang tsa nitrogen ka bongata bo lekaneng ho kopanya naetrojene e fumanehang (mohlala, min. 0,020 % kakaretso ea Al kapa 0,015 % e qhibilihang Al). b.Theko e phahameng ea naetrojene ha e sebetse haeba motsoako oa lik'hemik'hale o bontša bonyane kakaretso ea Al content ea 0,020 % ka tekanyo ea bonyane ea Al/N ea 2:1, kapa haeba likarolo tse ling tse lekaneng tsa N-binding li le teng.Lintlha tse tlamang N li tla tlalehoa Tokomaneng ea Tlhahlobo. | ||||||||
Ha re phethela:
Kaho ea lipeipi tsa oli e hloka litekanyetso tse phahameng ka ho fetisisa tsa ho tjheseletsa ho netefatsa bophelo bo bolelele, botshepehi le polokeho.Spiral submerged arc welding (HSAW) ke thekenoloji e netefalitsoeng ea khetho sebakeng sena ka lebaka la bokhoni ba eona ba ho etsa litšepe tse matla, tse tšoarellang le tse se nang sekoli.Ka melemo e mengata e kenyeletsang botšepehi bo ntlafetseng ba sebopeho, kaho e sebetsang hantle, tlhokomelo e fokotsehileng le melemo ea tikoloho, HSAW e phetha karolo ea bohlokoa ho finyella litlhoko tsa lipalangoang tsa oli lefatšeng ka bophara.Ha indasteri ea oli e ntse e tsoela pele ho hola, ts'ebeliso ea mahlale a tsoetseng pele a ho cheseletsa joalo ka HSAW e bohlokoa ho boloka bots'epehi le ts'epahalo ea liphaephe tsa oli ho pota lefatše.
Ka kakaretso
Cangzhou Spiral Steel Pipe Group Co., Ltd. e motlotlo ho fana ka lipeipi tsa seam tsa boleng bo holimo bakeng sa lits'ebetso tse fapaneng.Re tsepamisitse maikutlo ho hlahiseng ho nepahetseng, theknoloji e tsoetseng pele ea ho tjheseletsa le lisebelisoa tsa boleng ho fa bareki litharollo tse tšepahalang, tse sebetsang hantle bakeng sa litlhoko tsa bona tsa liphaephe.Re tšepe hore re tla fihlela litlhoko tsohle tsa hau 'me re bone ka pele ho ts'epahala le ho tiea ha lipeipi tsa rona tsa seam.
