1 Uhlolojikelele
Imikhumbi emikhulu yeziqukathi inezici ezifana nobude obukhulu, umthamo wesitsha, isivinini esikhulu, nokuvuleka okukhulu, okuholela ezingeni eliphezulu lokucindezeleka endaweni ephakathi nendawo yesakhiwo se-hull. Ngakho-ke, izinto zensimbi ezinobukhulu obukhulu obukhulu zivame ukusetshenziswa ekwakhiweni.
Njengendlela yokushisela esebenza kahle kakhulu, i-single-wire electric gas vertical welding (EGW) isetshenziswa kabanzi. Kodwa-ke, ngokuvamile ubukhulu bepuleti obukhulu obusebenzayo bungafinyelela ku-32 ~ 33mm kuphela, futhi ngeke busetshenziswe kumapuleti amakhulu amakhulu ashiwo ngenhla;
Ugqinsi lwepuleti olusebenzayo lwendlela ye-EGW yezintambo ezimbili ngokuvamile lufika cishe ku-70mm. Kodwa-ke, ngenxa yokuthi okokufaka ukushisa kwe-welding kukhulu kakhulu, ukuze kuqinisekiswe ukuthi ukusebenza kwejoyinti elihlanganisiwe kuhlangabezana nezidingo zokucaciswa, ipuleti lensimbi elifanele ukushisa okuphezulu kokufakwa kwe-welding kufanele lisetshenziswe.
Ngakho-ke, ngaphandle kokusebenzisa amapuleti ensimbi ashiselwe angakwazi ukuzivumelanisa nokufakwa kokushisa okukhulu, ukushisela okuqondile kwezinqenqema zamapuleti amakhulu futhi aminyene kungasebenzisa kuphela i-FCAW ye-multi-layer multi-pass welding, kanti ukusebenza kahle kokushisela kuphansi.
Le ndlela iyindlela yenqubo yokushisela ehlanganisiwe ye-FCAW+EGW eyakhiwe ngokusekelwe ezicini ezingenhla ezingakwazi kuphela ukusebenzisa i-EGW ekushiseleni amapuleti amakhulu amakhulu, inikeze ukudlala okugcwele ezinzuzweni zayo zokusebenza kahle, kodwa futhi ivumelane nezici zamapuleti ensimbi angempela. . Okusho ukuthi, indlela yokushisela ehlanganisiwe ephumelelayo esebenzisa i-FCAW yokushisela ohlangothini olulodwa endaweni yesakhiwo ukuze kuzuzwe ukwakheka kwe-backside, bese yenza i-EGW yokushisela endaweni engakhiwe.
Imishini yokushisela i-Xinfa inezici zekhwalithi ephezulu nenani eliphansi. Ukuze uthole imininingwane, sicela uvakashele:Abakhiqizi Bezinto Zokushisela Nezokusika - Imboni Yokushisela Nokusika YaseChina Nabahlinzeki (xinfatools.com)
2 Amaphuzu abalulekile wendlela yokushisela ehlanganisiwe ye-FCAW+EGW
(1) Ukujiya kwepuleti okusebenzayo
34~80mm: Okusho ukuthi, umkhawulo ophansi umkhawulo ophezulu wogqinsi lwepuleti elisebenzayo le-monofilament EGW; ngokuqondene nomkhawulo ongaphezulu, okwamanje umkhumbi omkhulu wesitsha usebenzisa amapuleti ensimbi anogqinsi olukhulu ohlangothini lwangaphakathi kanye namapuleti amagobolondo angaphezulu. Uma kucatshangelwa ukuthi ubukhulu bezinsimbi zensimbi zemikhiqizo ehlukene buhlukile, kunqunywa ukuthi kube ngu-80mm.
(2) Ukuhlukana kokuqina
Umgomo wokuhlukanisa ukushuba kokushisela ukunikeza ukudlala okugcwele kunzuzo ephezulu yokusebenza kahle kwe-EGW yokushisela; ngesikhathi esifanayo, kufanele sicabangele ukuthi inani Welding idiphozithi metal phakathi izindlela ezimbili akumele ihluke kakhulu, kungenjalo kuyoba nzima ukulawula Welding deformation.
(3) Indlela ye-welding ehlanganisiwe yokuklama ifomu elihlangene
① I-engeli ye-Groove: Ukuze ugweme ububanzi begroove ukuthi bube bukhulu kakhulu ohlangothini lwe-FCAW, inkaba incane ngokufanelekile kunomsele wokushisela ohlangene nohlangothi olulodwa lwe-FCAW, okuwukuqina kwepuleti Okuhlukile kudinga ama-engeli ama-bevel ahlukene. Lapho ukujiya kwepuleti kungu-30 ~ 50mm, kungu-Y±5°, futhi lapho ukujiya kwepuleti kungu-51~80mm, kungu-Z±5°.
② Igebe lezimpande: Idinga ukuzivumelanisa nezidingo zenqubo yazo zombili izindlela zokushisela ngasikhathi sinye, okungukuthi, G±2mm.
③Ifomu le-gasket elisebenzayo: Ama-gaskets avamile angunxantathu awakwazi ukuhlangabezana nezidingo zefomu elihlangene elingenhla ngenxa yezinkinga ze-engeli. Le ndlela yokushisela ehlanganisiwe idinga ukusetshenziswa kwama-gaskets e-bar round. Usayizi wobubanzi udinga ukukhethwa ngokusekelwe kunani langempela legebe lomhlangano (bheka Umfanekiso 1).
(4) Amaphuzu ayisisekelo wokwakhiwa kwe-welding
①Ukuqeqeshwa kokushisela. Abaqhubi badinga ukuqeqeshwa isikhathi esithile. Ngisho nabaqhubi abanolwazi lwe-EGW (indlela ye-SG-2) yokushisela amapuleti ensimbi ukujiya ajwayelekile kumele baqeqeshwe, ngoba ukunyakaza kokusebenza kwentambo yokushisela echibini elincibilikisiwe kuhlukile lapho kushiselwa amapuleti amancane namapuleti amakhulu awugqinsi.
②Qeda ukutholwa. Ukuhlola okungabhubhisi (i-RT noma i-UT) kufanele kusetshenziswe ekugcineni kwe-weld kanye nengxenye yokumisa i-arc ukuze kuhlolwe amaphutha futhi kuqinisekiswe usayizi wokukhubazeka. I-Gouging isetshenziselwa ukususa amaphutha, futhi izindlela zokushisela ze-FCAW noma ze-SMAW zisetshenziselwa ukushisela kabusha.
③Ipuleti elishayayo. Ubude bepuleti elishaya i-arc kufanele okungenani libe ngu-50mm. I-arc striking plate kanye ne-base material inogqinsi olufanayo futhi inegroove efanayo. ④ Ngesikhathi sokushisela, umoya uzodala ukuphazamiseka kwegesi evikelayo, kubangele ukonakala kwembobo ekushiseleni, futhi ukungena kwe-nitrogen emoyeni kuzodala ukusebenza ngokuhlanganyela okubi, ngakho-ke izinyathelo zokuvikela umoya ezidingekayo zidinga ukuthathwa.
3 Inqubo yokuhlolwa nokugunyazwa
(1) Izinto zokuhlola
Amapuleti okuhlola nezinto zokushisela kukhonjisiwe kuThebula 1
(2) Imingcele yokushisela
Isikhundla sokushisela yi-3G, futhi imingcele ethile yokushisela ikhonjiswe kuThebula 2.
(3) Imiphumela yokuhlolwa
Ukuhlolwa kwenziwe ngokuhambisana nemithetho ye-LR kanye ne-CCS yomkhumbi futhi ngaphansi kokuqondisa okusendaweni komhloli. Imiphumela imi kanje.
I-NDT kanye nemiphumela: Imiphumela ye-PT iwukuthi imiphetho yama-welds angaphambili nangemuva ahlanzekile, ingaphezulu libushelelezi, futhi azikho izici ezingaphezulu; Imiphumela ye-UT iwukuthi wonke ama-welds afanelekile ngemva kokuhlolwa kwe-ultrasonic (umhlangano we-ISO 5817 level B); Imiphumela ye-MT ithi amashisela angaphambili nangemuva awokutholwa kwamaphutha ezinhlayiyana kazibuthe Ngemva kokuhlola, akubangakho zinkinga zokushisela.
(4) Yamukela isiphetho
Ngemuva kokuthi i-NDT kanye nokuhlolwa kwezakhiwo zemishini kwenziwe emajoyini ashiselwe ukuhlolwa, imiphumela yahlangabezana nezidingo zokucaciswa komphakathi ngezigaba futhi yaphumelela ukugunyazwa kwenqubo.
(5) Ukuqhathaniswa kokuphumelela
Ukuthatha i-weld engu-1m ubude bepuleti elithile njengesibonelo, isikhathi sokushisela esidingekayo ekushiselweni kwe-FCAW ezinhlangothini ezimbili imizuzu engu-250; lapho kusetshenziswa indlela yokushisela ehlanganisiwe, isikhathi sokushisela esidingekayo ku-EGW siyimizuzu engu-18, futhi isikhathi sokushisela esidingekayo ku-FCAW siyimizuzu engu-125, kanti isikhathi sokushisela esiphelele singamaminithi angu-143. Indlela yokushisela ehlanganisiwe yonga cishe u-43% wesikhathi sokushisela uma kuqhathaniswa ne-welding yasekuqaleni enezinhlangothi ezimbili ze-FCAW.
4 Isiphetho
Indlela ye-welding ye-FCAW + EGW ehlanganisiwe eyathuthukiswa ngokulinga ayisebenzisi ngokugcwele ukusebenza kahle okuphezulu kwe-EGW welding, kodwa futhi ivumelanisa nezici zamanje zamapuleti ensimbi. Kuwubuchwepheshe obusha benqubo yokushisela enekhwalithi ephezulu ye-welding kanye nokwenzeka okuphezulu.
Njengobuchwepheshe benqubo yokushisela, ukukhiqizwa kwayo kwe-groove, ukunemba komhlangano, ukukhethwa kwezinto ezibonakalayo, imingcele yokushisela, njll. kubalulekile futhi kufanele kulawulwe ngokuqinile ngesikhathi sokuqaliswa.
Isikhathi sokuthumela: Feb-22-2024
