Ipayipi elishiselwengokuvamile ihlukaniswe iqonde umthungo ipayipi ashiselwe kanye Kuvunguza ashiselwe ipayipi izinhlobo ezimbili.

Inqubo yokushisela

Kusukela enqubweni yokushisela, indlela yokushisela yepayipi elishiselwe okuvunguzayo kanye nepayipi lensimbi lomthungo eliqondile liyavumelana, kodwa ipayipi elithungelwe ngothunge oluqondile lizoba ne-weld eningi emise okwe-t, ngakho-ke amathuba okuba nezinkinga zokushisela nawo athuthuke kakhulu, futhi Ukucindezelwa kokusala kwe-t-shaped seam welding kukhudlwana, isimo sokucindezeleka sensimbi yokushisela ngokuvamile siyindlela emithathu kwandisa amathuba okuqhekeka. in, kodwa wonke umthungo oqondile ipayipi ashiselwe lapho weld girth, ayikwazi ukuhlangabezana nemibandela, ngaleyo ndlela kungase kube ngaphezulu at arc Welding amaphutha.

Izici zamandla

Lapho ingcindezi ipayipi ukumelana, ngokuvamile ukucindezeleka ezimbili main odongeni, ukuthi ukucindezeleka radial futhi axial ukucindezelekaδ.Ukucindezeleka kwe-weld yokwenziwaδ, laphoα i-engeli ye-helix yepayipi le-weld elivunguzayo.I-Spiral welded seam degree ye-helix angle ngokuvamile i-synthetic, futhi i-spiral weld ye-Longitudinal stress ingcindezi enkulu.Ngaphansi kwengcindezi efanayo yokusebenza, ipayipi elivunguzayo lobubanzi obufanayo kunobugqinsi bodonga lwe-Longitudinal lingancishiswa.

Amandla okuqhuma kwe-Hydrostatic

Ngesivivinyo sokuqhathanisa esifanelekile sokuqinisekisa ipayipi elishiselwe elivunguzayo kanye nengcindezi yesivuno seLongitudinal kanye nengcindezi yokuqhuma kukalwa kanye namanani etiyethi..fanisa, ukuchezuka kusondele.Kodwa kungakhathaliseki ukuthi isivuno ukucindezeleka noma ukuqhuma ingcindezi, ayengaphansi kuka Longitudinal spiral ashiselwe.Ukuhlolwa kwe-Burst kubonisa futhi ukuthi izinga lokuguqulwa kwendandatho Kuvunguza ipayipi elishiselwe ukuqhuma i-Longitudinal likhulu kakhulu kunomlomo.Ngakho-ke kwaqinisekiswa ukuthi i-spiral welded plastic deformation ikhono kune-Longitudinal, umlomo oqhumayo ngokuvamile uvalelwa endaweni ethile, okuwukunwetshwa kwe-spiral weld ukuze iklebhule emphumeleni oqinile wokubopha okufanele.

Ukuqina namandla okukhathala

Umkhuba wokuthuthukiswa kwepayipi unobubanzi obukhulu namandla aphezulu.Ngokukhula kobubanzi bepayipi kanye nezinga lensimbi likhuphuka, ithrendi enwebekayo yokunweba ithiphu le-ductile fracture inkulu.Nakuba ipayipi elishiselwe elisontekile kanye nepayipi elishiselwe ngomthungo linezinga elifanayo, ipayipi elishiselwe elivunguzayo linokuqina komthelela omkhulu.Amapayipi okudlulisa ngenxa yenani loshintsho ekusebenzeni kwangempela, ipayipi ingaphansi komphumela wokulayisha oshintshanayo ngokungahleliwe.