Ukulimala kobude bepayipi elishiselwe oweld ngokweqile

Ngokuthuthuka okusheshayo kokukhiqizwa okuqhubekayo kwe-strip esezingeni eliphezulu kanye nokuthuthuka kobuchwepheshe bokushisela nokuhlola, ikhwalithi yama-welds iyaqhubeka nokuba ngcono, futhi kunezinhlobo eziningi kakhulu zamapayipi ashiselwe, athathe indawo yamapayipi ensimbi angenamthungo ngokuqhubekayo. amasimu.Enqubweni yokukhiqiza ipayipi elihlanganisiwe, ukuqiniswa kwe-weld kuyimininingwane ebaluleke kakhulu.Ukuqiniswa kwe-weld ngokweqile kwepayipi elishiselwe kunezingozi eziningi, njengokulandelayo:

Imifantu yokugqwala kwengcindezi kulula ukwenza ozwaneni obushisela.Ukugxila kokucindezeleka kwamalunga ezinqe kubangelwa ikakhulukazi ukuqiniswa kwe-weld.Mayelana nokushisela kwamalunga ezinqe, ingcindezi kuzwane lokushisela inkulu uma kuqhathaniswa.Isici sokugxilisa ukucindezeleka sincike ekuqinisweni kwe-weld h , Inzwane ye-weld ihlanganisa i-engeli θ kanye ne-radius yekona r, ukwanda kwe-weld reinforcement h, ukwanda kwe-θ angle, nokuncipha kwenani lika-r, elizokhula. isici sokugxilisa ukucindezeleka.

Ukuphakama kokuphakama okweqile kwe-weld, kubi kakhulu ukugxila kokucindezeleka, namandla okuhlangana okuhlanganisiwe kuzoncishiswa.Ngemuva kwe-welding, ukuphakama okweqile kuzofiphazwa.Uma nje ukuphakama okweqile kungaphansi kwesisekelo sezinto eziyisisekelo, ukugxila kokucindezeleka kungancishiswa, futhi amandla okuhlanganiswa okuhlanganisiwe ngezinye izikhathi angathuthukiswa.

Ukuphakama okwengeziwe kwe-weld yangaphandle kukhulu, okuthinta ukuma kwepayipi ngemva kokunwetshwa kwe-hydraulic.Lapho ipayipi elihlanganisiwe le-arc elihlanganisiwe le-longitudinal linwetshwa ngokucindezelwa kwamanzi, ipayipi lensimbi limbozwa isikhunta sangaphandle esinomgodi wangaphakathi ofanayo kanye nosayizi wokunweba wepayipi yensimbi.Ngakho-ke, uma Uma ukuqiniswa kwe-weld kukhulu kakhulu, ukucindezeleka kwe-shear ngesikhathi sokwandiswa kwe-weld kuyoba kukhulu kakhulu, futhi "imiphetho emincane eqondile" ijwayele ukubonakala ezinhlangothini zombili ze-weld.Okuhlangenwe nakho kubonisa ukuthi lapho ukuqiniswa kwe-weld yangaphandle kulawulwa cishe ngo-2mm, amanzi Ngeke kube khona into "encane eqondile" lapho ububanzi bunwetshwa, futhi isimo se-tube ngeke sithinteke.Lokhu kungenxa yokuthi ukuqiniswa kwe-weld yangaphandle kuncane, futhi ukucindezeleka kwe-shear kokuhlanganiswa okuhlanganisiwe nakho kuncane, inqobo nje uma ukucindezeleka kwe-shear kungaphakathi kohla lwe-elastic deformation Ngemva kokukhipha, i-springback iyenzeka, futhi ipayipi izobuyela ekuqaleni kwayo. isimo.I-weld seam yangaphakathi izoba nobude obuyinsalela obukhulu, okuzokwandisa ukulahlekelwa kwamandla kwendawo yokudlulisa.Uma ingaphakathi lepayipi elishiselwe i-arc elingaphansi kwamanzi ukuze lidluliselwe lingelashwa nge-anti-corrosion treatment, futhi i-weld seam yangaphakathi inobude obukhulu obusele, Ukumelana nokungqubuzana kwendawo yokudlulisa nakho kukhudlwana, okuzokwandisa ukusetshenziswa kwamandla. ipayipi lokudlulisa.

Ukuphakama okwengeziwe komthungo we-weld yangaphandle akuhambisani nokubola.Uma indwangu yengilazi ye-epoxy isetshenziselwa ukulwa nokubola ngesikhathi sokusebenza, ukuphakama okwengeziwe kwe-weld seam yangaphandle kuzokwenza uzwane weld kube nzima ukucindezelwa ngokuqinile.Ngesikhathi esifanayo, ukuphakama kwe-weld seam, ungqimba oluphikisana nokugqwala lube lukhulu, ngoba Izinga libeka ukuthi ubukhulu bongqimba oluphikisana nokugqwala kukalwa ngokusekelwe ku-vertex yomthungo ongaphandle wokushisela, okwandisa izindleko ze-anti-corrosion. - ukugqwala.Ngesikhathi sokushisela i-arc engaphansi kwe-spiral, "i-fish-back-shaped" yangaphandle ye-welding seams ijwayele ukubonakala, okwenza kube nzima kakhulu ukuqinisekisa ikhwalithi ye-anti-corrosion.Ngakho-ke, yilungise kahle Isikhundla sendawo yekhanda le-welding kanye nokucaciswa kwe-welding nakho kubaluleke kakhulu ukunciphisa noma ukuqeda "i-fish-back shape" ye-welding seam yangaphandle.


Isikhathi sokuthumela: Jul-06-2021