Phaephe ea Seam Seam ea boleng bo phahameng
Re hlahisa pipe ea rona ea boleng bo holimo ea spiral-seam, sehlahisoa se kenyelletsang matla, ho tšoarella le boenjiniere bo nepahetseng. E entsoe ka mokhoa o tsoetseng pele oa ho cheselletsa spiral, liphaephe tsa rona li entsoe ka likhoele tsa tšepe tse kolobisitsoeng ka ho chesa tse entsoeng ka hloko ho ba sebopeho sa cylindrical le ho ts'oaroa ho ipapisitse le seam sa spiral. Mokhoa ona o mocha oa tlhahiso ha o ntlafatse feela botšepehi ba sebopeho sa liphaephe, empa hape o etsa bonnete ba hore ba ka mamella mekhoa e boima ka ho fetisisa.
Khamphani ea rona, re motlotlo ka boitlamo ba rona bo sa thekeseleng ba ho khotsofatsa bareki. Ho theosa le lilemo, re iketselitse botumo ba bokhabane ka ho etelletsa pele litlhoko tsa bareki ba rona mohatong o mong le o mong oa mokhoa oa ho reka. Ho tloha lipuisanong tsa pele ho thekiso ho ea ho tšehetso ea thekiso le lits'ebeletso tse felletseng tsa kamora thekiso, re ikemiselitse ho fihlela litlhoko tsohle tsa bareki ba rona. Mokhoa ona oa ho tsepamisa maikutlo ho bareki o entse hore bareki ba rona ba tšepehe le ho tšepahala, ba lulang ba ananela boleng ba lihlahisoa tsa rona le ho tšepahala ha litšebeletso tsa rona.
Ea rona ea boleng bo holimophala ea seam spirale loketse mefuta e fapaneng ea likopo, ho kenyeletsoa kaho, oli le khase, le lipalangoang tsa metsing. Ka matla a eona a phahameng le ho tšoarella nako e telele, e etselitsoe ho mamella khatello le ho hanela ho bola, ho e etsa tharollo ea nako e telele bakeng sa litlhoko tsa hau tsa liphaephe.
Tlhaloso ea Sehlahisoa
| Thepa e ka Sehloohong ea 'Mele le ea Lik'hemik'hale ea Lipeipi tsa Tšepe (GB/T3091-2008, GB/T9711-2011 le API Spec 5L) | ||||||||||||||
| Standard | Kereiti ea tšepe | Likarolo tsa Lik'hemik'hale (%) | Thepa ea Tensile | Teko ea Tšusumetso ea Charpy(V notch) | ||||||||||
| c | Mn | p | s | Si | Tse ding | Yield Strength (Mpa) | Tensile Strength (Mpa) | (L0=5.65 √ S0 ）Metsotso e Lebelo la ho Otlolla (%) | ||||||
| max | max | max | max | max | min | max | min | max | D ≤ 168.33mm | D ~ 168.3 limilimithara | ||||
| GB/T3091 -2008 | Q215A | ≤ 0.15 | 0.25 ＜ 1.20 | 0.045 | 0.050 | 0.35 | Ho eketsa NbVTi 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 | Ka boikhethelo ho kenyelletsa e 'ngoe ea likarolo tsa NbVTi kapa motsoako ofe kapa ofe oa tsona | 175 | 310 | 27 | Ho ka khethoa e le 'ngoe kapa tse peli tsa index ea toughness ea matla a tšusumetso le sebaka sa ho kuta. Bakeng sa L555, bona maemo. | ||||
| 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, ka boikhethelo ho eketsa Nb kapa V kapa motsoako oa bona, le Nb+V+Ti ≤ 0.15% | 172 | 310 | (L0=50.8mm) e tla baloa ho latela foromo e latelang:e=1944·A0 .2/U0 .0 A: Sebaka sa sampole ho mm2 U: Matla a fokolang a boletsoeng ho Mpa | Ha ho letho kapa leha e le efe kapa bobeli ba matla a tšusumetso le sebaka sa ho kuta e hlokahalang e le mokhoa oa ho thatafala. | ||||
| 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 | ||||||||
Molemo oa Sehlahisoa
1. E 'ngoe ea melemo e ka sehloohong ea phala ea seam ea spiral ke matla a eona a babatsehang. Ts'ebetso ea spiral welding e etsa hore ho be le tjheseletso e tsoelang pele, ka tsela eo ho matlafatsa botšepehi ba sebopeho sa phala. Sena se etsa hore e be tse loketseng ho tsamaisa maro le likhase tlas'a khatello e matla.
2. Mokhoa oa ho etsa lihlahisoa o sebetsa hantle, o lumella liphaephe tse telele hore li hlahisoe ntle le tlhokahalo ea manonyeletso, e ka bang lintlha tse fokolang tse ka bang teng.
3. Molemo o mong oa bohlokoa oahelical seam pipeke ho feto-fetoha ha eona. Li ka hlahisoa ka mefuta e fapaneng ea li-diameter le marako a marako bakeng sa mefuta e mengata ea likopo ho tloha ho lipalangoang tsa oli le khase ho ea tsamaisong ea metsi.
4. Lik'hamphani tse etsang liphaephe tsena li etelletsa pele khotsofalo ea bareki 'me li fana ka litšebeletso tse ngata tsa pele ho thekiso, nakong ea thekiso le ka morao ho thekiso. Boitlamo bona bo netefatsa hore bareki ba fumana lihlahisoa tse tsamaellanang le litlhoko tsa bona, ho ntlafatsa boiphihlelo ka kakaretso.
Khaello ea lihlahisoa
1. Ts'ebetso ea spiral welding e ka ba e rarahaneng ho feta mekhoa ea khale ea ho cheselletsa, e ka fellang ka litšenyehelo tse phahameng tsa tlhahiso.
2. Le hoja liphaephe tsa spiral seam li le matla, li ka 'na tsa se ke tsa mamella mefuta e itseng ea kutu ho feta lisebelisoa tse ling tsa liphaephe 'me li hloka litlolo tse sireletsang kapa phekolo.
LBH
Q1: Pipe ea spiral seam ke eng?
Spiral seam pipe e hahiloe ka mokhoa o ikhethileng o bitsoang spiral welding process. Theknoloji ena e ncha e kenyelletsa litšepe tse kolobisitsoeng ka ho chesa tse entsoeng ka sebōpeho sa cylindrical 'me li tšehelitsoe haufi le seam sa spiral. Pipe e hlahisoang ha e na matla a phahameng feela empa e boetse e tšoarella ka ho fetisisa, e etsa hore e be e loketseng bakeng sa mefuta e sa tšoaneng ea likopo, ho kenyelletsa le lipalangoang tsa oli le khase, phepelo ea metsi le ts'ehetso ea meralo.
Q2: Hobaneng u khetha phala ea seam ea boleng bo holimo?
Monyetla o ka sehloohong oa liphaephe tsa boleng bo phahameng tsa spiral seam ke kaho ea tsona e matla. Ts'ebetso ea spiral welding e lumella hore ho be le welding e tsoelang pele, e leng ho matlafatsang botšepehi le ho hanyetsa khatello ea phala. Ho phaella moo, liphaephe tsena li ka etsoa ka boholo bo fapaneng le botenya ho finyella litlhoko tse khethehileng tsa merero e fapaneng.
Q3: Ke lokela ho sheba eng ho mofani oa thepa?
Ha u khetha morekisi oa li-tubing tsa spiral seam, ho bohlokoa ho khetha k'hamphani e behang khotsofalo ea bareki pele. Batla morekisi ea fanang ka litšebeletso tse felletseng tsa thekiso ea pele, thekiso le lits'ebeletso tsa kamora ho rekisa. Khampani e nang le botumo bo botle e tla etsa bonnete ba hore lihlahisoa tsa eona li finyella litekanyetso tse behiloeng 'me li ka khona ho lumellana le litlhoko tsa hau tse ikhethang, ho netefatsa hore u fumana lihlahisoa le litšebeletso tsa boleng bo phahameng tseo bareki ba hao ba tla li ananela.
