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 elishiselwe 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 ye-welding 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 weziphambeko.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, okubangele ukonakala kwembobo ekushiseleni, futhi ukungena kwe-nitrogen emoyeni kuzodala ukusebenza ngokuhlanganyela okubi, ngakho-ke izinyathelo zokuvikela umoya ezidingekayo kufanele zithathwe.
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 iwukuthi amashisela angaphambili nangemuva athola amaphutha 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 singamaminithi angu-125, kanti isikhathi sokushisela siphelele imizuzu engu-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 yokushisela kanye nokuba 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
