Sebakeng sa ho cheka oli le seliba sa oli, likhahla tse phahameng tsa motlakase tse hanyetsanang le li-welded casing (tseo ho thoeng ke ERW casing) ha li bapisoa le seamless casing ke ho nepahala ha maemo a holimo, ho thatafala ha weld, anti-extrusion ea ts'ebetso e phahameng, le melemo e theko e tlase. e ’nile ea sebelisoa haholo linaheng lisele, ’me e finyelletse liphello tse molemo.

Litšobotsi tsa ERW casing (ha e bapisoa le casing e se nang seam)
Ho nepahala ho phahameng: Khase ea ERW e sebelisa mokhoa oa ho etsa boholo ka mor'a ho bōptjoa, casing e nepahetseng e se nang seamless e ekelitse boholo ba eona (bophara ba ka ntle, botenya ba lebota, ho pota-pota, joalo-joalo), 'me bophara ba eona bo ka ntle bo sa fete ± 0 Average .5%. Joalo ka ha e hlahisoe ke Nippon Steel 6244.5 n'un ERW casing thickness kheloha e tloaelehileng ea <0.10 mill e tsamaisanang le seamless casing standard deviation e ne e le 0.41 mill.

Matla a matle a weld: Ts'ebetso ea tlhahiso ea ERW casing e ka netefatsoa ho fumana litaba tsa C, S le P li tlase mokhatlong oa likarolo le lisebelisoa tsa motheo tsa matla a phahameng, boima bo phahameng ba weld, lesela le thata la weld le seamless sleeve e le hore tube ea sleeve. .

Anti-extrusion thepa ea anti-knock: matla a phahameng a 30% ho ea ho 40% ha a bapisoa le API e ts'oanang ea seamless casing, ERW casing anti-extrusion, anti-knock properties (khatello ea ka hare) e ka bang 50% e phahameng.

Theknoloji e tsoetseng pele, taolo ea boleng ba sehlahisoa: ERW sleeve base base metal control rolled coil, isotropic, 100% tlhahlobo e sa senyeheng.

Theko e tlase: ha e bapisoa le casing e ts'oanang e se nang seamless, ERW casing 5% ho 10% theko e tlaase, ts'ebetso e phahameng, tekanyo e phahameng ea mechine le boiketsetso, tšebeliso e tlaase ea matla le tlhahiso; ERW casing e qetile sekhahla sa sehlahisoa sa 93% ho isa ho 98%, 'me casing e se nang moeli e qetile sekhahla sa sehlahisoa sa 85% ho isa ho 90%; ERW Casing chelete eohle ea projeke e tlase ka 40% ho feta projeke ea casing e seamless.

Litšobotsi tsa tekheniki tsa casing ea ERW
(1) Khetho ea lisebelisoa tse tala tse laoloang ke coil, taolo e tiileng ea litaba tsa S le P, le k'habone e lekanang, hangata W (S) ≤ 0.015%, e lekanang le carbon ≤ O. 25%. 'Me ts'ebeliso ea lisebelisoa tsa micro-alloying tse kang Nb, V, Ti, le cu li ntlafatsa ho tiea ha tšepe ho ntlafatsa weldability le ho hanyetsa kutu.

(2) Koele e teteaneng ka mor'a phekolo ea ho sila ka bohale, e ka fokotsa li-burrs tsa tjheseletsa tse bakoang ke ho chesa haholo le ho tsuba.

(3) Ho sebelisoa haholo spiral looper bakeng sa tlhahiso e tsoelang pele, ha ho na tlhahiso ea li-roll-to-volume e bakoang ke ho emisa ho tjheseletsa, ho fella ka ho qala ho tjheseletsa, hona joale, ho se tsitse ha motlakase ka lebaka la liphoso tsa boleng ba sehlahisoa.

(4) E atisa ho sebelisoa ka mokhoa oa morao-rao oa ho tlosoa ha hydraulic ea burrs process, casing inner burr height control 1.14 NLNL.

(5) Mekhahlelo e thata ea ho tjheseletsa, ho kenyelletsa le matla a ho kenya letsoho, tjheseletsa e nang le sebopeho sa V, lebelo la ho tjheseletsa, taolo ea mocheso oa welding. Mocheso oa ho tjheseletsa ka lebelo le phahameng la tjheseletsa la taolo e koetsoeng ea loop, e laolang ho feto-fetoha ha maemo a ka tlase ho ± 5 ℃.

(6) Ho hatisoa ka phekolo ea mocheso ka morao-weld, ka phekolo ea mocheso oa morao-rao ho ntlafatsa mokhatlo le khatello ea kelello ea ka hare ea sebaka sa weld.

(7) Ho etsa yuniti ea matla a phahameng le boholo, ho fokotsa ho nepahala ho hoholo ho felile.

(8) Bakeng sa tjheseletsa le tšepe e le tlhahlobo e feletseng ea mohala kapa ea off-line e sa senyeheng, ho lemoha ka nako e nepahetseng le ho nepahala ha liphoso, e le hore ho lokisoe ka nako ts'ebetso ea tlhahiso ho netefatsa boleng ba sehlahisoa.