Khatello e setseng ea pipe ea LSAW e bakoa haholo-holo ke ho pholile ho sa tšoaneng.Khatello ea kelello e setseng ke khatello ea maikutlo ea ka hare ea "self phase equilib" ntle le matla a kantle.Khatello ena e setseng e teng likarolong tse chesang tsa likarolo tse fapaneng.E kholoanyane boholo ba karolo ea tšepe ea karolo e akaretsang, khatello ea masala e kholoanyane.
Le hoja khatello e setseng e ikemela, e ntse e e-na le tšusumetso e itseng mosebetsing oa litho tsa tšepe tlas'a matla a ka ntle.Ka mohlala, e ka 'na ea e-ba le liphello tse mpe ho deformation, botsitso le ho hanyetsa mokhathala.Ka mor'a ho cheselletsa, li-inclusions tse se nang tšepe ka pipe ea LSAW li hatelloa ka maqephe a tšesaane, e leng se etsang hore ho be le lamination.Ebe lamination haholo deteriorates tensile tshebetso ya LSAW phala hammoho tataiso botenya, le interlayer taboha ka etsahala ha tjheseletsa ho honyela.Khatello ea lehae e bakoang ke shrinkage ea weld hangata ke makhetlo a 'maloa a khatello ea ntlha ea lihlahisoa, e leng kholo ho feta e bakoang ke mojaro.Ho phaella moo, phala ea LSAW e tla ba le li-T-welds tse ngata, kahoo monyetla oa ho ba le bokooa ba ho tjheseletsa o ntlafala haholo.Ho feta moo, khatello e setseng ea tjheseletsa ho T-weld e kholo, 'me tšepe ea weld e atisa ho ba boemong ba khatello ea maikutlo a mararo, e leng ho eketsang monyetla oa ho phatloha.
The welding seam ea spiral submerged arc welded pipe e ajoa ka moleng o spiral, 'me li-welds li telele.Haholo-holo ha tjheseletsa tlas'a maemo a matla, weld e siea sebaka sa ho theha pele ho pholile, e leng ho leng bonolo ho hlahisa mapetsong a chesang a ho cheselletsa.Tataiso ea ho peperana e bapa le weld mme e theha angle e kenyellelitsoeng le axis ea phala ea tšepe, ha re bua ka kakaretso, angle e pakeng tsa 30-70 °.Lehlakore lena le lumellana le sekhahla sa ho hloleha ha shear, kahoo ho kobeha ha eona, ho tsitsipana, ho hatella le ho thibela ho sotha ha ho tšoane le phala ea LSAW.Ka nako e ts'oanang, ka lebaka la moedi oa boemo ba tjheseletsa, seam sa welding le saddle le tlhapi se ama ponahalo.Ka hona, NDT ea SSAW pipe welds e lokela ho matlafatsoa ho netefatsa boleng ba welding, ho seng joalo pipe ea SSAW ha ea lokela ho sebelisoa liketsahalong tsa bohlokoa tsa mohaho oa tšepe.
Nako ea poso: Jul-13-2022