Spiral welded pipe (saw): E entsoe ka ho roala tšepe e entsoeng ka carbon e tlaase-carbon kapa tšepe e tlaase ea alloy structural steel strip ho kena ka har'a tube e se nang letho ho latela angle e itseng ea helical (e bitsoang ho etsa angle), ebe o tjheseletsa seam sa phala. E ka etsoa ka moqotetsane hlobolisa tšepe hlahisa liphaephe tse kholo bophara tšepe. Litlhaloso tsa eona li hlahisoa ka bophara bo ka ntle * botenya ba lebota. Thepeipi e cheselitsoenge lokela ho etsa bonnete ba hore tlhahlobo ea hydraulic, matla a tsitsipano a weld le ts'ebetso e batang ea ho khumama e tlameha ho kopana le melao.

Melemo ea spiral welded pipe:

(1) Liphaephe tsa tšepe tsa bophara bo fapaneng li ka hlahisoa ka ho sebelisa tšepe ea hlobolisa ea bophara bo lekanang, haholo-holo liphaephe tsa tšepe tsa bophara bo boholo li ka hlahisoa ka tšepe e moqotetsane.
(2) Tlas'a maemo a tšoanang a khatello, khatello ea spiral welded seam e nyane ho feta ea seam e otlolohileng, e leng 75% ho isa ho 90% ea phala e otlolohileng ea seam welded, kahoo e khona ho mamella khatello e kholo. Ha ho bapisoa le liphaephe tse otlolohileng tse entsoeng ka seam tse nang le bophara bo tšoanang ba ka ntle, botenya ba lerako bo ka fokotsoa ka 10% ho isa ho 25% tlas'a khatello e tšoanang.
(3) Litekanyo, mamello e akaretsang ea bophara ha e fete 0.12%, ho kheloha ho ka tlase ho 1/2000, 'me ellipticity e ka tlase ho 1%. Ka kakaretso, mekhoa ea boholo le ho otlolla e ka tlosoa.
(4) E ka hlahisoa ka ho tsoelang pele. Ka khopolo, e ka hlahisa liphaephe tsa tšepe tse telele ka ho sa feleng. Ho lahleheloa ke hlooho le mohatla ho nyenyane, 'me sekhahla sa tšebeliso ea tšepe se ka eketseha ka 6% ho ea ho 8%.
(5) Ha e bapisoa le phala ea longitudinal welded, e sebetsa habonolo ebile e bonolo ho fetola mefuta le liphetoho.
(6) Thepa e bobebe ka boima mme e tlase ho tsetelo ea pele. E ka etsoa yuniti e tsamaeang ea mofuta oa tereilara ho hlahisa lipeipi tse cheselitsoeng ka kotloloho setšeng sa kaho moo lipeipi li kenngoeng teng.
(7) Ho bonolo ho elelloa ts'ebetso le boiketsetso.

Bobebe ba phala ea spiral welded ke:hobane coiled hlobolisa tšepe e sebelisoa e le lintho tse bonahalang tse tala, ho na le itseng crescent koba, 'me ntlha tjheseletsa e sebakeng se bohale sebakeng sa tšepe hlobolisa le elasticity, kahoo ha ho bonolo ho lolamisa toche tjheseletsa, e amang tjheseletsa. boleng. Ho etsa sena, ho hlophisoa lisebelisoa tse rarahaneng tsa ho latela seam le ho hlahloba boleng.

Tataiso ea nts'etsopele ea pipi e cheselitsoeng ka spiral:

Ka lebaka la khatello e ntseng e eketseha ea lipeipi, maemo a ts'ebeletso a ntseng a mpefala, le tlhokeho ea ho lelefatsa bophelo ba lipeipi ka hohle kamoo ho ka khonehang, tataiso e ka sehloohong ea nts'etsopele ea phaephe e cheselitsoeng ke spiral ke:
(1) Hlahisa liphaephe tse nang le marako a maholo a bophara bo boholo ho ntlafatsa ho hanyetsa khatello;
(2) Rala le ho hlahisa liphaephe tsa tšepe tse nang le meaho e mecha, joalo ka liphaephe tse cheselitsoeng ka makhetlo a mabeli, ke hore, lipeipi tse cheselitsoeng tse nang le lera le le leng le halofo ea botenya ba lebota la phala, le nang le matla a phahameng ho feta a lera le le leng. liphaephe tsa botenya bo ts'oanang, empa hape ha ho bonahale ho hloleha ho brittle;
(3) Ntlafatsa mefuta e mecha ea tšepe, ho ntlafatsa boemo ba theknoloji ea ho qhibilihisa, le ho amohela theknoloji e laoloang le ea morao-rao ea mocheso oa mocheso ho tsoela pele ho ntlafatsa matla, boima le ts'ebetso ea tjheseletsa ea 'mele oa phala;

(4) Ho ntshetsa pele ka matla liphaephe tse koahetsoeng, tse kang ho roala lerako le ka hare la phala ka lera le thibelang kutu, le ke keng la lelefatsa bophelo ba tšebeletso feela, empa hape le ntlafatsa boreleli ba lerako le ka hare, ho fokotsa ho hanyetsa mokelikeli, ho fokotsa boka. ho bokella le litšila, ho fokotsa palo ea lipeipi tse hloekisang, le ho fokotsa litšenyehelo tsa tlhokomelo.

PS:Lipeipi tsa tšepe tse cheselitsoenge na le litšenyehelo tse tlase le katleho e phahameng ea tlhahiso ho fetali-tubes tse se nang moeli. Pipe e otlolohileng ea seam welded e na le ts'ebetso e bonolo ea tlhahiso, ts'ebetso e phahameng ea tlhahiso, theko e tlase le nts'etsopele e potlakileng. Matla a pipi e cheselitsoeng ka spiral hangata a phahame ho feta a phala e otlolohileng e cheselitsoeng.