Pipe ea Tšepe ea SSAW vs. LSAW Pipe ea Tšepe

Lefatšeng la tlhahiso ea lipeipi tsa tšepe, mefuta e 'meli e hlahelletseng e hlahella: Spiral Submerged Arc Welded (SSAW) le Longitudinal Submerged Arc Welded (LSAW) lipeipi tsa tšepe. Ka bobeli li bapala karolo ea bohlokoa liindastering tse fapaneng, ho kenyelletsa oli le khase, lipalangoang tsa metsi le kaho. Ho utloisisa phapang pakeng tsa mefuta ena e 'meli ea lipeipi ho bohlokoa bakeng sa baenjiniere, batsamaisi ba merero, le litsebi tsa theko ea thepa ho etsa liqeto tse nang le tsebo ha ba khetha khetho e nepahetseng ka ho fetisisa bakeng sa likopo tsa bona tse khethehileng.

Phaephe ea Tšepe ea SSAW le phaephe ea LSAW ka bobeli ke liphaephe tse bōpehileng ka bophara bo boholo tse sebelisoang lits'ebetsong tse ngata tsa indasteri. Leha ho le joalo, li fapana haholo ka mekhoa ea tsona ea tlhahiso, litšobotsi tsa ts'ebetso, le ho tšoaneleha bakeng sa merero e fapaneng. Sengoloa sena se tla hlahloba liphapang tsa bohlokoa lipakeng tsa liphaephe tsa tšepe tsa SSAW le LSAW, melemo le mefokolo ea tsona, le tataiso ea ho khetha mofuta o nepahetseng bakeng sa litlhoko tsa hau tse ikhethileng.

Liphaephe tsa SSAW li cheselitsoe sebakeng sa helix kapa sa spiral ha liphaephe tsa LSAW li cheselitsoe ka tsela ea longitudinal:

Phapang ea mantlha lipakeng tsa liphaephe tsa tšepe tsa SSAW le LSAW e mabapi le mokhoa oa tsona oa ho cheselletsa. Phapang ena ea mantlha ha e ame feela ts'ebetso ea tlhahiso empa e boetse e ama litšobotsi tsa sebopeho sa lipeipi le ts'ebetso lits'ebetsong tse fapaneng.

Phaephe ea Tšepe ea SSAW , joalo ka ha lebitso le bontša, e etsoa ka mokhoa oa ho tjheseletsa o potolohang kapa o potolohang. Ts'ebetsong ena, moqomo oa tšepe o tsoelang pele kapa poleiti e fepuoa ka har'a mochini o etsang ka sekhutlo, ebe o o kobeha hore o be sebopeho sa spiral. Ha spiral e ntse e thehoa, mathoko a kopanngoa hammoho ho sebelisoa mokhoa oa ho tjheseletsa o ka tlas'a metsi (SAW). Sena se fella ka seam e tsoelang pele ea helical weld e tsamaeang bolelele bohle ba phaephe.

The spiral welding process e fana ka melemo e mengata. E lumella tlhahiso e sebetsang ea liphaephe tsa bophara bo boholo ho tloha ho li-coil tse nyenyane tsa tšepe, ho fokotsa litšila tsa thepa le ho nolofalletsa ho etsoa ha liphaephe tse nang le bophara ho tloha ho 219mm ho ea ho 3500mm. Ho feta moo, spiral weld e aba khatello ea maikutlo ka mokhoa o ts'oanang ho potoloha selikalikoe sa phala, e leng monyetla oa ho matlafatsa matla a eona ka kakaretso le ho hanyetsa likhatello tsa kantle.

Ka lehlakoreng le leng, liphaephe tsa LSAW li etsoa ka mokhoa oa ho tjheseletsa o molelele. Ts'ebetso ena e qala ka poleiti ea tšepe e qalisoang pele ka sebopeho sa cylindrical, hangata ho sebelisoa mochini oa ho tobetsa kapa oa ho koba meqolo. Ebe mathoko a poleiti a kopanngoa 'me a hokelloa bolelele ba phala ho sebelisoa mokhoa oa ho tjheseletsa oa arc o ka tlas'a metsi. Sena se fella ka seam e otlolohileng ea ho tjheseletsa e tsamaeang ka tsela e bapileng le axis ea phala.

Ts'ebetso ea longitudinal welding e sebelisoang tlhahisong ea phala ea LSAW e lumella taolo e kholo holim'a litekanyo tsa phala le botenya ba lebota. E loketse ka ho khetheha bakeng sa ho hlahisa liphaephe tse nang le bophara bo boholo haholo (ho fihla ho 5500mm) le marako a teteaneng, a atisang ho hlokoa ha ho sebelisoa khatello e phahameng kapa libakeng tse tebileng tsa leoatle.

Ho shebana ha seam se cheselletsang liphaepheng tsa LSAW (ho bapa le axis ea pipe) ho bolela hore likhatello tsa mantlha lits'ebetsong joalo ka liphaephe tse nang le khatello e phahameng li ipapisitse le cheseletso. Tlhophiso ena e ka fana ka ts'ebetso e phahameng maemong a itseng a khatello ea maikutlo e phahameng ha e bapisoa le liphaephe tsa SSAW, moo helical weld e ka bang le khatello ea maikutlo ea longitudinal le circumferential.

Liphaephe tsa LSAW li na le ts'ebetso e ntle ho feta liphaephe tsa SSAW:

Leha liphaephe tsa tšepe tsa SSAW le tsa LSAW ka bobeli li na le melemo ea tsona, liphaephe tsa LSAW ka kakaretso li nkoa li fana ka ts'ebetso e phahameng lits'ebetsong tse itseng tsa bohlokoa. Molemo ona oa ts'ebetso o hlaha ka lebaka la lintlha tse 'maloa tse amanang le ts'ebetso ea tsona ea tlhahiso le litšobotsi tsa sebopeho.

Taba ea pele, ts'ebetso ea welding ea longitudinal e sebelisoang tlhahisong ea liphaephe tsa LSAW e lumella taolo e betere holim'a ho nepahala ha phala. Seam se otlolohileng sa weld se thusa bahlahisi ho fihlela mamello e matla ho latela bophara, ovality le botenya ba lebota. Ho nepahala hona ho bohlokoa haholo lits'ebetsong tseo ho tsona ho lekanang hantle le ho lokisoa ho leng bohlokoa, joalo ka liphaephe tse kantle ho naha kapa ha ho hokeloa likarolo tsa lipeipi libakeng tse boima haholo.

Taba ea bobeli, liphaephe tsa LSAW hangata li bonts'a thepa e phahameng ea mochini, haholo-holo mabapi le matla le boima. The longitudinal weld orientation e ikamahanya hantle le likhatello tsa mantlha tse bang teng liphaepheng tsa khatello e phahameng, moo khatello ea hoop (circumferential stress) e imena habeli khatello ea longitudinal. Tokiso ena e lumella liphaephe tsa LSAW ho mamella likhatello tse phahameng tsa ka hare le meroalo e ka ntle ka katleho ho feta balekane ba bona ba SSAW.

Ts'ebetso ea tlhahiso ea lipeipi tsa LSAW le tsona li kenya letsoho ho ntlafatseng ts'ebetso ea tsona. Tšebeliso ea lipoleiti tse pharaletseng tsa tšepe li lumella hore ho be le taolo e ntlafetseng holim'a microstructure ea tšepe le thepa ho pholletsa le selikalikoe sa phala. Ho ts'oana hona ho fella ka thepa e tsitsitseng ea mechine le ho ntlafala ho hanyetsa mefuta e sa tšoaneng ea mekhoa ea ho hlōleha, ho kenyelletsa le khatello ea khatello ea maikutlo le ho phunyeha ha hydrogen-induced cracking.

Ho feta moo, liphaephe tsa LSAW hangata li bontša khanyetso e phahameng ea mokhathala. The weld seam e otlolohileng e na le mekhoa e fokolang ea khatello ea kelello ha e bapisoa le helical weld ka liphaephe tsa SSAW, e ka 'nang ea fokotsa kotsi ea ho hlōleha ho amanang le mokhathala maemong a cyclic loading. Tšobotsi ena e etsa hore lipeipi tsa LSAW li tšoanelehe haholo bakeng sa lits'ebetso tse amanang le ho fetoha ha khatello khafetsa kapa meroalo e matla, joalo ka liphaepheng tse tsoang lebopong kapa liphaepheng tsa leoatle.

Mabapi le boleng ba weld, liphaephe tsa LSAW hangata li na le monyetla. Ts'ebetso ea longitudinal welding e lumella ho fihlella habonolo le taolo nakong ea lits'ebetso tsa welding le tlhahlobo. Sena se nolofatsa tlhahiso ea li-welds tsa boleng bo phahameng tse nang le mefokolo e fokolang 'me e nolofalletsa tlhahlobo e feletseng e sa senyeheng, e tlatsetsang ho tšepahala le ho sireletseha ha phala ka kakaretso.

Leha ho le jwalo, ho bohlokwa ho hlokomela hore le hoja diphaephe tsa LSAW ka kakaretso di fana ka tshebetso e betere, SSAW Steel Pipe e ntse e le kgetho e sebetsang le e theko e tlase bakeng sa ditshebediso tse ngata. Diphaephe tsa SSAW hangata di theko e tlase ho di hlahisa, haholoholo ka bophara bo bonyenyane, mme di ka etswa ka bolelele bo bolelele bo tswelang pele. Di boetse di sebetsa hantle ditshebedisong tse ngata tse tloaelehileng tsa diphaephe moo melemo ya tshebetso ya diphaephe tsa LSAW e kanna ya se be bohlokwa.

Pipe ea tšepe ea SSAW le moetsi oa phala ea tšepe ea LSAW:

LONGMA GROUP ke moetsi ea nang le botumo bo botle oa LSAW Steel Pipe le SSAW steel pipe , ea fanang ka lihlahisoa tse fihlelang maemo a fapaneng a machaba.

Bakeng sa bao ba leng 'marakeng oa liphaephe tsa tšepe tsa SSAW tsa boleng bo holimo le liphaephe tsa tšepe tsa SSAW, LONGMA GROUP e amohela lipotso 'me e ka fana ka tlhaiso-leseling e batsi mabapi le lihlahisoa le lits'ebeletso tsa bona. Batho ba nang le thahasello ba ka ikopanya le k'hamphani ho info@longma-group.com ho buisana ka litlhoko tsa bona tse ikhethileng le ho hlahloba hore na liphaephe tsa tšepe tsa LONGMA GROUP li ka fihlela litlhoko tsa bona tsa projeke joang.