Ukucindezeleka okusele kwepayipi le-LSAW kubangelwa kakhulu ukupholisa okungalingani. Ukucindezeleka okusele kuwukucindezeleka kokulingana kwesigaba sangaphakathi ngaphandle kwamandla angaphandle. Lokhu kucindezeleka okusele kukhona ezingxenyeni ezigoqiwe ezishisayo zezingxenye ezahlukene. Uma ubukhulu besigaba sensimbi ejwayelekile yesigaba bubukhulu, kulapho ukucindezeleka okusele kuba kukhulu khona.
Nakuba ukucindezeleka okusele kuyazilinganisela, kusenomthelela othile ekusebenzeni kwamalungu ensimbi ngaphansi kwamandla angaphandle. Isibonelo, kungaba nemiphumela emibi ekuguqukeni, ekuzinzeni nasekumelaneni nokukhathala. Ngemva kokushisela, ukufakwa okungeyona insimbi epayipini le-LSAW kucindezelwa kube amashidi amancane, okuholela ekushiseni. Ngemuva kwalokho ukushisela kunciphisa kakhulu ukusebenza kokushisisa kwepayipi le-LSAW ngendlela yobukhulu, futhi ukudabuka kwe-interlayer kungenzeka lapho ukushisisa kuncipha. Ukucindezeleka kwendawo okubangelwa ukushisisa kwe-weld kuvame ukuba izikhathi eziningana zokucindezeleka kwephuzu le-yield, okukhulu kakhulu kunalokho okubangelwa umthwalo. Ngaphezu kwalokho, ipayipi le-LSAW ngokuqinisekile lizoba nama-T-weld amaningi, ngakho-ke amathuba okuba neziphambeko zokushisisa athuthukiswa kakhulu. Ngaphezu kwalokho, ukucindezeleka okusele kokushisisa ku-T-weld kukhulu, futhi insimbi yokushisisa ivame ukuba sesimweni sokucindezeleka okunezinhlangothi ezintathu, okwandisa amathuba okuqhekeka.
Umthungo wokushisela wepayipi elihlanganisiwe le-arc elihlanganisiwe eliyi-spiral lisakazwa emgqeni ojikelezayo, kanti ama-weld amade. Ikakhulukazi uma kushiselwa ngaphansi kwezimo eziguquguqukayo, i-weld ishiya indawo yokwakha ngaphambi kokupholisa, okulula ukukhiqiza imifantu eshisayo yokushisela. Isiqondiso sokuqhekeka sihambisana ne-weld futhi sakha i-engeli ehlanganisiwe ne-axis yepayipi lensimbi, ngokuvamile, i-engeli iphakathi kuka-30-70 °. Le engeli ihambisana ne-engeli yokuhluleka kwe-shear, ngakho-ke izakhiwo zayo zokugoba, ukuthamba, ukucindezela kanye nokulwa nokusonta azilungile njengepayipi le-LSAW. Ngesikhathi esifanayo, ngenxa yomkhawulo wesikhundla sokushisela, umthungo wokushisela wesihlalo kanye ne-fish ridge kuthinta ukubukeka. Ngakho-ke, i-NDT yama-weld epayipi le-SSAW kufanele iqiniswe ukuqinisekisa ikhwalithi yokushisela, ngaphandle kwalokho ipayipi le-SSAW akufanele lisetshenziswe emicimbini ebalulekile yesakhiwo sensimbi.
Isikhathi sokuthunyelwe: Julayi-13-2022