1 Isishwankathelo
Iinqanawa ezinkulu zeenqanawa zineempawu ezifana nobude obukhulu, umthamo wesitya, isantya esiphezulu, kunye nokuvuleka okukhulu, okukhokelela kwinqanaba eliphezulu loxinzelelo kwindawo ephakathi kwesakhiwo se-hull. Ngoko ke, izinto ezinkulu zetsimbi ezinobukhulu obukhulu zihlala zisetyenziselwa ukuyila.
Njengendlela ye-welding ephezulu, i-single-wire electric gas vertical welding (EGW) isetyenziswa ngokubanzi. Nangona kunjalo, ubukhulu becala ubukhulu bepleyiti obusebenzayo bunokufikelela kuphela kwi-32 ~ 33mm, kwaye ayinakusetyenziswa kwiipleyiti ezinkulu ezichazwe ngasentla;
Ubukhulu bepleyiti esebenzayo yendlela ye-EGW yocingo oluphindwe kabini ngokuqhelekileyo ifikelela malunga ne-70mm. Nangona kunjalo, ngenxa yokuba igalelo lobushushu be-welding likhulu kakhulu, ukuqinisekisa ukuba ukusebenza kwe-welding edibeneyo ihlangabezana neemfuno ezichaziweyo, ipleyiti yensimbi efanelekileyo kwi-welding ye-welding yokushisa kufuneka isetyenziswe.
Ngoko ke, ngaphandle kokusebenzisa iipleyiti zentsimbi ezidityanisiweyo ezinokuziqhelanisa negalelo elikhulu lobushushu, ukuwelda okuthe nkqo kwempundu kwamacwecwe amakhulu kunye ashinyeneyo kunokusebenzisa kuphela i-FCAW ye-multi-layer multi-pass welding, kunye nokusebenza kakuhle kwe-welding kuphantsi.
Le ndlela yindlela yenkqubo ye-welding ye-FCAW + EGW ephuhliswe ngokusekwe kwezi mpawu zingasentla ezingenakusebenza kuphela i-EGW kwi-welding yamacwecwe amakhulu ashinyeneyo, inike umdlalo opheleleyo kwiinzuzo zayo eziphezulu zokusebenza, kodwa ikwazi ukuziqhelanisa neempawu zeepleyiti zentsimbi zokwenyani. . Oko kukuthi, indlela ye-welding edibeneyo edibeneyo esebenzisa i-FCAW ye-welding single-sided on the structural surface ukuphumeza ukubunjwa kwe-backside, kwaye emva koko yenza i-EGW ye-welding kwindawo engeyiyo yesakhiwo.
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2 Amanqaku aphambili e-FCAW + EGW edityanisiweyo ye-welding indlela
(1) Ukutyeba kwepleyiti esebenzayo
34 ~ 80mm: Oko kukuthi, umda ophantsi ngumda ophezulu we-plate thickening ye-monofilament EGW; ngokubhekisele kumda ongaphezulu, okwangoku inqanawa enkulu yesikhongozeli isebenzisa iipleyiti zentsimbi ezinobukhulu obukhulu kwicala langaphakathi kunye neepleyiti zestrake zeqokobhe eliphezulu. Ukuqwalasela ukuba ubukhulu beeplate zetsimbi zeemveliso ezahlukeneyo zihluke, kunqunywe ukuba yi-80mm.
(2) Ukwahlulahlula ukutyeba
Umgaqo wokwahlula ubukhulu be-welding kukunika umdlalo opheleleyo kwinzuzo ephezulu yokusebenza kwe-EGW ye-welding; kwangaxeshanye, kufuneka sithathele ingqalelo ukuba isixa welding idipozithi metal phakathi iindlela ezimbini kufuneka ingahluka kakhulu, kungenjalo kuya kuba nzima ukulawula i-welding deformation.
(3) Indlela ye-welding edibeneyo yoyilo lwefom edibeneyo
① I-engile ye-Groove: Ukuthintela ukuba ububanzi bomsele bube bukhulu kakhulu kwicala le-FCAW, umsele mncinci ngokufanelekileyo kunesiqhelo se-FCAW esinecala elinye le-welding groove, enobungqingqwa bamapleyiti obahlukeneyo bufuna ii-engile ezahlukeneyo ze-bevel. Xa ubukhulu bepleyiti buyi-30 ~ 50mm, yiY± 5 °, kwaye xa ubukhulu beplate bungama-51 ~ 80mm, yi-Z± 5 °.
② Umsantsa weengcambu: Kufuneka ukulungelelaniswa kwiimfuno zenkqubo yeendlela zombini ze-welding ngaxeshanye, oko kukuthi, i-G ± 2mm.
③Ifomu ye-gasket esebenzayo: Iigaskets eziqhelekileyo ezinxantathu azikwazi ukuhlangabezana nezi mfuno zefom edibeneyo engentla ngenxa yeengxaki ze-engile. Le ndlela ye-welding edibeneyo idinga ukusetyenziswa kwee-gaskets zebar ezijikelezayo. Ubungakanani bedayamitha kufuneka bukhethwe ngokusekelwe kwixabiso le-gap yendibano (jonga umfanekiso 1).
(4) Amanqaku asisiseko okwakhiwa kwe-welding
①Uqeqesho lokuwelda. Abanini zithuthi kufuneka bafumane ithuba elithile loqeqesho. Kwanabaqhubi abanamava kwi-EGW (indlela ye-SG-2) ukuwelda kweepleyiti zentsimbi eziqhelekileyo kufuneka bafumane uqeqesho, kuba iintshukumo zokusebenza ze-welding wire kwi-pool etyhidiweyo ziyahluka xa ukuwelda iipleyiti ezibhityileyo kunye namacwecwe amakhulu amakhulu.
②Ukugqiba ukubhaqwa. Uvavanyo olungonakalisi (RT okanye i-UT) kufuneka lusetyenziswe ekupheleni kwe-weld kunye ne-arc stop part ukujonga iziphene kunye nokuqinisekisa ubungakanani beziphene. I-Gouging isetyenziselwa ukususa iziphene, kwaye i-FCAW okanye i-SMAW iindlela ze-welding zisetyenziselwa ukuphinda zisebenze.
③Ipleyiti yokubetha iArc. Ubude bepleyiti yokubetha i-arc kufuneka bube yi-50mm ubuncinane. Ipleyiti yokubetha i-arc kunye nesiseko sezinto ezinobunzima obufanayo kwaye zinegroove efanayo. ④ Ngexesha le-welding, umoya uya kubangela ukuphazamiseka kwegesi ekhuselayo, kubangela iziphene ze-pore kwi-weld, kunye nokungena kwe-nitrogen emoyeni kuya kubangela ukusebenza kakubi ngokubambisana, ngoko ke kufuneka kuthathwe amanyathelo okukhusela umoya.
3 Inkqubo yovavanyo kunye nokuvunywa
(1) Izinto zokuvavanya
Iiplati zokuvavanya kunye nezixhobo ze-welding ziboniswe kwiThebhile 1
(2) Iiparamitha ze-Welding
Isikhundla se-welding yi-3G, kwaye iiparitha ze-welding ezithile ziboniswa kwiThebhile 2.
(3) Iziphumo zovavanyo
Uvavanyo lwenziwe ngokuhambelana ne-LR kunye nemigaqo ye-CCS yeenqanawa kwaye phantsi kweliso lendawo ngumhloli. Iziphumo zezi zilandelayo.
I-NDT kunye neziphumo: Iziphumo ze-PT kukuba imida ye-welds yangaphambili nasemva icocekile, ubuso buhamba kakuhle, kwaye akukho ziphene; Iziphumo ze-UT kukuba zonke ii-welds zifanelekile emva kovavanyo lwe-ultrasonic (intlanganiso ye-ISO 5817 level B); Iziphumo ze-MT zezokuba i-welds yangaphambili nasemva yimagnethi yokubona isiphene sesuntswana Emva kokuhlolwa, bekungekho ziphene zokuwelda.
(4) Wamkele umqukumbelo
Emva kokuba i-NDT kunye novavanyo lweepropathi zoomatshini zenziwe kuvavanyo lwe-welded joints, iziphumo ziye zahlangabezana neemfuno zenkcazo yoluntu yolwahlulo kwaye yaphumelela inkqubo yokuvunywa.
(5) Ukuthelekiswa kobuchule
Ukuthatha i-1m ubude be-weld yepleyiti ethile njengomzekelo, ixesha lokuthunga elifunekayo kwi-welding ye-FCAW ephindwe kabini yimizuzu engama-250; xa kusetyenziswa indlela yokudibanisa i-welding, ixesha lokudibanisa elifunekayo kwi-EGW yimizuzu eyi-18, kwaye ixesha lokudibanisa elifunekayo kwi-FCAW yimizuzu eyi-125, kwaye ixesha elipheleleyo le-welding yimizuzu eyi-143. Indlela ye-welding edibeneyo igcina phantse i-43% yexesha le-welding xa kuthelekiswa ne-welding ye-FCAW yangaphambili emacala amabini.
4 Isiphelo
Indlela ye-FCAW + EGW edibeneyo yokudibanisa i-welding ephuhliswe ngokulinga ayisebenzisi ngokupheleleyo kuphela ukusebenza kakuhle kwe-EGW ye-welding, kodwa iphinda ivumelane neempawu zangoku zamacwecwe ensimbi. Yinkqubo entsha yetekhnoloji ye-welding enobuchule obuphezulu be-welding kunye nokuba nokwenzeka okuphezulu.
Njengobuchwephesha benkqubo ye-welding entsha, imveliso yayo ye-groove, ukuchaneka kwendibano, ukukhetha izinto eziphathekayo, iiparamitha ze-welding, njl njl. zibalulekile kwaye kufuneka zilawulwe ngokungqongqo ngexesha lokuphunyezwa.
Ixesha lokuposa: Feb-22-2024
