Liphaephe tse Welded tsa Arc tse koahetsoeng ka spiral bakeng sa indasteri ea sejoale-joale
Melemo ea phaephe e phuthetsoeng ka arc e qoelitsoeng ka hare ho spiral:
1. Kaho e sebetsang hantle:
Liphaephe tsa SSAW li na le moralo oa weld o potolohang o lumellang tlhahiso e sebetsang hantle le nako e fokotsehileng ea tlhahiso. Tšobotsi ena e ikhethang e etsa hore e be khetho ea pele bakeng sa merero e meholo ea kaho joalo ka oli leliphaephe tsa khase, litsamaiso tsa phetiso ea metsi, le liforomo tsa ho cheka tse lebōpong la leoatle. Ts'ebetso e tsoelang pele ea ho tjheseletsa e netefatsa boemo bo phahameng ba botšepehi ba sebopeho, e eketsa ho tšoarella le bophelo ba tšebeletso ea phaephe.
| E tloaelehileng | Sehlopha sa tšepe | Sebopeho sa lik'hemik'hale | Matlo a ho thapolla | Teko ea Tšusumetso ea Charpy le Teko ea ho lahla boima ba 'mele | ||||||||||||||
| C | Si | Mn | P | S | V | Nb | Ti | CEV4)(%) | Matla a tlhahiso ea Rt0.5 Mpa | Matla a Tensile a Rm Mpa | Rt0.5/ Rm | (L0=5.65 √ S0)Ho lelefatsa A% | ||||||
| boholo | boholo | boholo | boholo | boholo | boholo | boholo | boholo | Tse ling | boholo | motsotso | boholo | motsotso | boholo | boholo | motsotso | |||
| L245MB | 0.22 | 0.45 | 1.2 | 0.025 | 0.15 | 0.05 | 0.05 | 0.04 | 1) | 0.4 | 245 | 450 | 415 | 760 | 0.93 | 22 | Teko ea tšusumetso ea Charpy: Matla a monyang tšusumetso ea 'mele oa phaephe le seam ea weld a tla lekoa joalo ka ha ho hlokahala tekanyetsong ea pele. Bakeng sa lintlha tse qaqileng, sheba tekanyetso ea pele. Teko ea ho taboha ha boima ba lerotholi: Sebaka sa ho kuta se khethiloeng | |
| GB/T9711-2011(PSL2) | L290MB | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 1) | 0.4 | 290 | 495 | 415 | 21 | |||
| L320MB | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 1) | 0.41 | 320 | 500 | 430 | 21 | ||||
| L360MB | 0.22 | 0.45 | 1.4 | 0.025 | 0.015 | 1) | 0.41 | 360 | 530 | 460 | 20 | |||||||
| L390MB | 0.22 | 0.45 | 1.4 | 0.025 | 0.15 | 1) | 0.41 | 390 | 545 | 490 | 20 | |||||||
| L415MB | 0.12 | 0.45 | 1.6 | 0.025 | 0.015 | 1)2)3 | 0.42 | 415 | 565 | 520 | 18 | |||||||
| L450MB | 0.12 | 0.45 | 1.6 | 0.025 | 0.015 | 1)2)3 | 0.43 | 450 | 600 | 535 | 18 | |||||||
| L485MB | 0.12 | 0.45 | 1.7 | 0.025 | 0.015 | 1)2)3 | 0.43 | 485 | 635 | 570 | 18 | |||||||
| L555MB | 0.12 | 0.45 | 1.85 | 0.025 | 0.015 | 1)2)3 | Puisano | 555 | 705 | 625 | 825 | 0.95 | 18 | |||||
2. Matla le ho tenyetseha ho babatsehang:
Sebopeho sa spiral sa phaephe ya SSAW se eketsa matla a yona, se e dumella ho hanela kgatello ya kantle le ya kahare. Diphaephe tsena di kgona ho mamella maemo a feteletseng a sepakapaka, e leng se etsang hore di lokele tshebediso ya ka hodimo le ka tlase ho mobu. Ho feta moo, ho tenyetseha ha diphaephe tsa SSAW ho di dumella ho fetolwa habonolo le ho kenngwa dibakeng tse fapaneng, ho kenyeletswa le mobu o sa tsitsang le mobu o sa tsitsang.
3. Tharollo e theko e tlaase:
Mekhoa e tsoelang pele ea ho tjheseletsa e eketsa tlhahiso ha ka nako e ts'oanang e fokotsa haholo liphoso le litšenyehelo tsa ho tjheseletsa. Ho feta moo, liphaephe tse tjheseletsoeng ka arc tse koahetsoeng ka hare ho spiral li fana ka matla le ho tšoarella ho hoholo, li fokotsa litšenyehelo tsa tlhokomelo le tokiso bophelong ba tsona, e leng se etsang hore e be khetho e theko e tlaase bakeng sa indasteri.
Mathata a tobaneng le liphaephe tse welded tsa arc tse koahetsoeng ka hare ho spiral:
1. Taolo ea boleng:
Ka lebaka la mekhoa e rarahaneng ea ho tjheseletsa e amehang ho hlahiseng liphaephe tse tjheseletsoeng ka arc tse spiral tse kenelletseng ka metsing, ho netefatsa boleng bo tsitsitseng hoa phephetsa. Haeba liparamente tsa ho tjheseletsa li sa laoloe ka nepo, liphoso tsa ho tjheseletsa tse kang ho seha ha lipeipi, masoba le ho hloka ho kopana li tla hlaha. Ho hlola phephetso ena, mehato e tiileng ea taolo ea boleng le litsamaiso tse tsoetseng pele tsa tlhokomelo nakong ea ts'ebetso ea tlhahiso li bohlokoa.
2. Mefuta e fapaneng ea lithibelo tsa bophara ba phaephe:
Leha liphaephe tse welletsoeng ka arc tse spiral tse koahetsoeng ka hare ho metsi li loketse lits'ebetso tsa bophara bo boholo, li kanna tsa se ke tsa tšoaneleha bakeng sa liindasteri tse hlokang boholo bo bonyenyane ba liphaephe. Ts'ebetso ea tlhahiso e sebetsa hantle haholo bakeng sa liphaephe tse bophara bo boholo, e leng se fellang ka ho fumaneha ho fokolang bakeng sa merero e menyenyane joalo ka liphaephe tsa bolulo le ts'ebeliso e nyane ea indasteri. Bakeng sa litlhoko tse joalo, mahlale a mang a tlhahiso ea liphaephe a lokela ho nahanoa.
3. Seaparo sa bokaholimo:
Bothata bo bong bo tobaneng le indasteri ea liphaephe tsa SSAW ke ho netefatsa hore ho na le liphaephe tse loketseng le tse tšoarellang holim'a metsi ho sireletsa khahlanong le ho bola le ho tsofala. Tšebeliso ea liphaephe holim'a libaka tse potolohang e hloka lisebelisoa tse tsoetseng pele le boiphihlelo ho netefatsa hore ho na le sekoahelo se lekanang le ho khomarela. Liphaephe tse loketseng holim'a metsi li bohlokoa ho atolosa bophelo ba tšebeletso ea liphaephe tse koahetsoeng ka arc tse koahetsoeng ka spiral, haholo-holo libakeng tse thata.
Ha re phethela:
Liphaephe tse tjheseletsang ka arc tse ka hare ho spiral li ipakile e le theknoloji e molemo haholo indastering ea sejoale-joale, e fanang ka bokhoni, matla le katleho ea litšenyehelo. Seam ea eona e ikhethang ea spiral weld e lumella tlhahiso e sebetsang hantle le ho tšoarella ho eketsehileng, e leng se etsang hore e lokele merero e meholo ea kaho. Leha ho le joalo, bakeng sa katleho e tsoelang pele le ho amoheloa ka bophara ha theknoloji ena ea tlhahiso, liphephetso tse kang taolo ea boleng, sebaka se lekanyelitsoeng sa bophara, le liphahlo tsa bokaholimo li hloka ho rarolloa. Ka ho hlola liphephetso tsena ka tsoelo-pele ea theknoloji le tšebelisano-'moho ea indasteri, spiral submarine arc welded pipe e na le bokamoso bo tšepisang ba ho fetola le ho boloka meralo ea motheo ea bohlokoa lefatšeng ka bophara.







