Enqubweni yokukhiqiza umbhoshongo wamandla omoya, ukushisela kuyinqubo ebaluleke kakhulu.Izinga le-welding lithinta ngqo izinga lokukhiqiza lombhoshongo.Ngakho-ke, kuyadingeka ukuqonda izimbangela zokukhubazeka kwe-weld kanye nezinyathelo ezihlukahlukene zokuvimbela.
1. Imbobo yomoya kanye nokufakwa kwe-slag
I-Porosity: I-Porosity ibhekisela emgodini owenziwe lapho igesi echibini elincibilikisiwe ingaphumi ngaphambi kokuqina kwensimbi futhi ihlala ekushiseleleni.Igesi yakhona ingase imuncwe yichibi elincibilikisiwe ngaphandle, noma ingase ikhiqizwe ukusabela enqubweni yokushisela i-metallurgy.
(1) Izizathu eziyinhloko zemigodi yomoya: kukhona ukugqwala, ibala likawoyela, njll. ebusweni bensimbi eyisisekelo noma i-filler metal, futhi inani lemigodi yomoya lizokhula uma induku ye-welding kanye ne-flux ingasomisiwe, ngoba ukugqwala , ibala likawoyela, kanye nomswakama osembozweni nasekugelezeni kwenduku yokushisela kubola kube igesi ekushiseni okuphezulu, okwandisa okuqukethwe kwegesi ensimbi enezinga eliphezulu lokushisa.Amandla omugqa wokushisela mancane kakhulu, futhi isivinini sokupholisa sechibi elincibilikisiwe sikhulu, esingahambisani nokuphuma kwegesi.I-deoxidation enganele yensimbi ye-weld nayo izokwandisa i-oxygen porosity.
(2) Ukulimala kwama-blowholes: ama-blowholes anciphisa indawo esebenzayo yengxenye ye-weld futhi akhulule i-weld, ngaleyo ndlela anciphise amandla kanye ne-plasticity ye-joint futhi abangele ukuvuza.I-porosity nayo iyisici esibangela ukugxila ekucindezelekeni.I-hydrogen porosity ingase ibe nomthelela ekuqhekekeni okubandayo.
Izinyathelo zokuvimbela:
a.Susa ibala likawoyela, ukugqwala, amanzi nama-sundries ocingweni lokushisela, i-groove esebenzayo kanye nezindawo zayo eziseduze.
b.Ama-alkaline welding rods kanye nama-fluxes azosetshenziswa futhi omiswe kahle.
c.Ukuxhumeka kwe-DC reverse kanye ne-arc welding emfushane kuzokwamukelwa.
D. Preheat ngaphambi kokushisela ukuze wehlise isivinini sokupholisa.
E. Ukushisela kuzokwenziwa ngemininingwane eqinile.
I-crackle
Izinyathelo zokuvimbela ukuqhekeka kwekristalu:
a.Yehlisa okuqukethwe kwezinto eziyingozi njengesulfure ne-phosphorus, futhi weld ngezinto ezinokuqukethwe kwekhabhoni ephansi.
b.Izakhi ezithile ze-alloy zengezwa ukunciphisa amakristalu ekholomu nokuhlukaniswa.Isibonelo, i-aluminium nensimbi ingacwenga okusanhlamvu.
c.I-weld enokungena okungashoni izosetshenziswa ukwenza ngcono isimo sokuqeda ukushisa ukuze indawo encibilikayo intante endaweni yokushisela futhi ingabi khona lapho kushisela.
d.Imininingwane ye-welding kufanele ikhethwe ngokunengqondo, futhi ukushisisa kwangaphambili kanye nokushisisa kuzokwamukelwa ukuze kwehliswe izinga lokupholisa.
e.Yamukela ukulandelana komhlangano okuphusile ukuze unciphise ingcindezi yokushisela.
Izinyathelo zokuvimbela ukuqhekeka kokushisisa kabusha:
a.Naka umphumela wokuqinisa wezinto ze-metallurgical kanye nomthelela wazo ekuqhekekeni kokushisa kabusha.
b.Shisisa kusengaphambili ngokunengqondo noma sebenzisa i-afterheat ukuze ulawule izinga lokupholisa.
c.Yehlisa ingcindezi eyinsalela ukuze ugweme ukugxilisa ingqondo.
d.Ngesikhathi sokushisa, gwema indawo yezinga lokushisa ebucayi yokuqhekeka kokushisisa kabusha noma unciphise isikhathi sokuhlala kule ndawo yezinga lokushisa.
Izinyathelo zokuvimbela imifantu ebandayo:
a.Induku yokushisela yohlobo lwe-hydrogen ephansi izosetshenziswa, yomiswe ngokuqinile, igcinwe ku-100-150 ℃, futhi isetshenziswe lapho ithathwa.
b.Izinga lokushisa langaphambi kokushisa lizokwenyuswa, izinyathelo zokushisa okuthunyelwe zizothathwa, futhi izinga lokushisa le-interpass akufanele libe ngaphansi kwezinga lokushisa langaphambi kokushisa.Ukucaciswa kwe-welding okufanele kukhethwe ukuze kugwenywe izakhiwo eziqinile neziqinile ku-weld.
c.Khetha ukulandelana kokushisela okunengqondo ukuze unciphise ukubola kwe-welding kanye nengcindezi yokushisela.
d.Yenza ukwelashwa kokushisa kokuqeda i-hydrogen ngesikhathi ngemuva kokushisela
Isikhathi sokuthumela: Nov-08-2022