Ukuxineka okusele kwe-LSAW Pipe kudalwa ikakhulukazi ukupholisa okungalingani. Ukuxineka okusele yindawo yangaphakathi yokulinganisa ukulingana ngaphandle kwamandla angaphandle. Lokhu kucindezelwa okusele kutholakala ezingxenyeni ezishisayo ezigoqiwe zezigaba ezahlukahlukene. Uma likhudlwana usayizi wesigaba sensimbi esejwayelekile yeSigaba, kulapho kuqhubeka khona ingcindezi esele.
Yize ukucindezelwa okusele ukuzilinganisela, kusenomthelela othile ekusebenzeni kwamalungu ensimbi ngaphansi kwamandla angaphandle. Isibonelo, ingaba nemiphumela emibi ekuguqukeni, ukuqina kanye nokungazethembi ukukhathala. Ngemuva kokufudumala, ukufakwa okungeyona kwensimbi kwipayipi le-Lsaw kucindezelwa emashidini amancanyana, okuholela ekubumbeni. Lapho-ke ukugcwala kuwohloka kakhulu ukusebenza kwe-Lsaw Pipe eduze kwendlela yokuqina, futhi ukunye kwenhlamvu kungenza lapho i-weld idonsa. Umugqa wendawo oye waphoqelelwa yi-weld shrinkage uvame kaningi kaningana yohlobo lokuthola isivuno, olukhulu kakhulu kunalokho okubangelwa umthwalo. Ngaphezu kwalokho, ipayipi le-LSAW lizongenakugwenywa ama-t-welds amaningi, ngakho-ke kungenzeka ukuthi kungenzeka ukuthi amathuba okushisa athuthukiswa kakhulu. Ngaphezu kwalokho, ukucindezelwa kwezinsalela ze-welding e-T-Weld kukhulu, futhi insimbi ye-weld imvamisa isesimweni sokuxineka okunezinhlangothi ezintathu, okukhulisa amathuba okufa.
Umthungo we-welding wepayipi we-welded efakwe emanzini aphakathi nendawo asatshalaliswa emugqeni ovulekile, futhi ama-welds ande. Ikakhulu lapho i-welding ngaphansi kwezimo ezinamandla, i-weld ishiya iphuzu elakhiwe ngaphambi kokupholisa, okulula ukukhiqiza imifantu eshisayo eshisayo. Ukuqondiswa kokuqhekeka kufana ne-weld futhi kwakha i-angle efakiwe nge-axis yensimbi yensimbi, ngokuvamile ekhuluma, i-angle iphakathi kuka-30-70 °. Le angle ihambelana nje ne-angle yokusehluleka ye-shear, ngakho-ke izakhiwo zayo ezigoqiwe, ezisheshayo, ezicindezelayo kanye nokulwa nokulwa nazo azilungile njengepayipi le-lsaw. Ngasikhathi sinye, ngenxa yomkhawulo wesikhundla se-welding, i-saddle kanye ne-fish ridge welding umthungo kuthinta ukubukeka. Ngakho-ke, i-NDT ye-SSAW Pipe AmaWelds kufanele iqiniswe ukuze kuqinisekiswe ikhwalithi ye-welding, uma kungenjalo ipayipi le-SSAW akufanele lisetshenziswe ezimweni ezibalulekile zensimbi.
Isikhathi sePosi: Jul-13-2022