Ingabe uke wahlangabezana nanoma yiziphi izinkinga zokushisela ezifana nokuchaphaza okukhulu ngesikhathi sokushisela, ukwakheka kokushisela okungathandeki, kanye nenani elikhulu lezimbotshana ngemva kokushisela?Uma usacubungula ukuthi ngabe kungenxa yenkinga yezilungiselelo zepharamitha yenqubo ye-welding ye-laser, uyazi yini ukuthi ukusetshenziswa okufanele kwegesi yokuvikela i-welding nakho kuyisici esibalulekile esithinta ukwakheka kwe-weld nokusebenza.Ukukhetha igesi engcono kakhulu yokuvikela ukushisela empeleni kuthuthukisa ikhwalithi yokushisela kanye Indlela ephumelelayo.
Njengoba igesi yokuvikela ukushisela ibaluleke kakhulu, khona-ke: Iyini indima yokuvikela igesi?Ungakhetha kanjani uhlobo lwegesi yokuvikela?Kufanele kuqhunyiswe kanjani igesi evikelayo ngesikhathi sokushisela?Okulandelayo, i-Hangao Tech (SEKO Machinery) izoholela wonke umuntu ukuthi afunde okwengeziwe.
Indima yegesi evikelayo
Ku-laser welding, ukuvikela igesi kuzothinta ukwakheka kwe-weld, ikhwalithi ye-weld, ukujula kokungena kwe-weld kanye nobubanzi bokungena.Ezimweni eziningi, ukuvuthela igesi evikelayo kuzoba nomthelela omuhle ekushiseleni, kodwa kungase kubangele nomonakalo.Woza nomphumela ongemuhle.
Imiphumela emihle
1) Ukushaywa okulungile kwegesi evikelayo kuzovikela ngokuphumelelayo i-weld pool ukunciphisa noma ukugwema ngisho ne-oxidation;
2) Ukushaywa okulungile kwegesi evikelayo kunganciphisa ngempumelelo isipayisi esikhiqizwa ngesikhathi senqubo yokushisela;
3) Ukushaywa okulungile kwegesi evikelayo kungakhuthaza ukusabalala komfaniswano we-weld pool ngesikhathi sokuqina, ukuze i-weld yakheke ngendlela efanayo futhi enhle;
I-4) Ukuvuthwa okulungile kwegesi evikelayo kunganciphisa ngempumelelo umphumela wokuvikela wensimbi yomusi noma ifu le-plasma ku-laser, futhi kukhuphule izinga lokusebenzisa elisebenzayo le-laser;
5) Ukushaywa okulungile kwegesi yokuvikela kunganciphisa ngempumelelo i-welding seam porosity.
Uma nje uhlobo lwegesi, izinga lokugeleza kwegesi, nendlela yokuphefumula kukhethwa ngendlela efanele, umphumela oyifunayo ungatholakala.
Kodwa-ke, ukusetshenziswa okungalungile kwegesi yokuvikela kuzoba nomthelela omubi ekushiseleni
1) Ukuphephetha okungalungile kwegesi evikelayo kungabangela ukuwohloka kwe-weld:
①Ukukhetha uhlobo lwegesi olungalungile kungase kubangele imifantu endaweni yokushisela, futhi kungase kubangele izici zomshini zokushisela ukuncipha;
②Ukukhetha izinga lokugeleza elingalungile lokuphephuka kwegesi kungase kubangele i-oxidation eyingozi kakhulu ye-weld (noma ngabe ukugeleza kukhulu kakhulu noma kuncane kakhulu), futhi kungase kubangele ukuthi insimbi ye-weld pool iphazamiseke kakhulu amandla angaphandle futhi kubangele ukuthi i-weld idilike noma yakhe. ngokungalingani;
③Ukukhetha indlela engalungile yokuvunguza igesi kuzobangela ukuthi umthungo wokushisela wehluleke ukufeza umphumela wokuvikela noma empeleni ungabi nawo umthelela wokuvikela noma kube nomthelela omubi ekwakhekeni komthungo wokushisela;
I-2) Ukuqhuma kwegesi yokuvikela kuzoba nomthelela othile ekungeneni kwe-weld, ikakhulukazi uma u-welding amapuleti amancane, kuzonciphisa ukungena kwe-weld.
Izinhlobo zegesi ezivikelayo
Amagesi okuvikela asetshenziswa kakhulu we-laser welding ikakhulukazi afaka i-N2, i-Ar, He, kanye nezakhiwo zawo ezingokomzimba namakhemikhali ahlukile, ngakho-ke imiphumela yawo ekushiseleni nayo ihlukile.
I-nitrogen N2
Intengo ishibhe kakhulu, kodwa ayifanele ukushisela ezinye izinsimbi ezingenasici.Amandla e-ionization we-N2 aphakathi, aphakeme kunalawo e-Ar futhi aphansi kunalawo ka-He.Ngaphansi kwesenzo se-laser, i-ionization degree iphakathi, enganciphisa ukwakheka kwefu le-plasma futhi ikhulise izinga lokusebenzisa elisebenzayo le-laser.I-nitrogen ingasabela ngamakhemikhali nge-aluminium alloy ne-carbon steel ezingeni lokushisa elithile ukuze ikhiqize ama-nitride, okuzokhuphula ukuqina kwe-weld, kunciphise ukuqina, futhi kube nomthelela omubi kakhulu ezicini zemishini zejoyinti lokushisela.Ngakho-ke, akunconywa ukusebenzisa i-nitrogen.I-aluminium alloy kanye ne-carbon steel welds ivikelekile.
I-nitride ekhiqizwa ukusabela kwamakhemikhali phakathi kwe-nitrogen nensimbi engagqwali ingakhuphula amandla we-weld joint, okuzosiza ukuthuthukisa izakhiwo zemishini ze-weld.Ngakho-ke, i-nitrogen ingasetshenziswa njengegesi evikelayo lapho kushiselwa insimbi engagqwali.
Argon Ar
Intengo ishibhile, ukuminyana kuphakeme, futhi umphumela wokuvikela ungcono.Ingaphezulu le-weldment libushelelezi kunegesi ye-helium, kodwa iyakwazi ukungena kwi-ionization ye-plasma yensimbi enezinga eliphezulu lokushisa.Kuvinjwe ngokujulile.Amandla e-ionization we-Ar aphansi uma kuqhathaniswa, futhi i-ionization degree iphezulu ngaphansi kwesenzo se-laser, esingahambisani nokulawula ukwakheka kwefu le-plasma, futhi kuzoba nomthelela othile ekusetshenzisweni ngempumelelo kwe-laser.Kodwa-ke, umsebenzi we-Ar uphansi kakhulu futhi kunzima ukusebenzisana ngamakhemikhali nezinsimbi ezivamile.Izindleko ze-Ar aziphezulu.Ngaphezu kwalokho, ukuminyana kwe-Ar kuphakeme, okuzuzisa ukucwila phezulu kwe-weld pool, futhi kungavikela kangcono i-weld pool, ngakho-ke ingasetshenziswa njengegesi evamile yokuvikela.
Helium Yena
Intengo ibiza kakhulu, kodwa umphumela ungcono kakhulu, ukuze i-laser ikwazi ukudlula ngokuqondile futhi ifinyelele ebusweni bomsebenzi ngaphandle kokuvinjelwa.Amandla e-ionization kaYe aphezulu kakhulu, futhi i-ionization degree iphansi kakhulu ngaphansi kwesenzo se-laser, esingalawula kahle ukwakheka kwefu le-plasma.I-laser ingakwazi ukusebenza kahle ensimbi, futhi umsebenzi ka-Ye uphansi kakhulu, futhi empeleni ayisebenzi ngamakhemikhali ngensimbi.Kuyigesi enhle yokuvikela i-welding seams, kodwa izindleko ze-He is too high.Ngokuvamile, imikhiqizo ekhiqizwa ngobuningi ngeke isebenzise le gesi.Ngokuvamile usetshenziselwa ucwaningo lwesayensi noma imikhiqizo enenani eliphakeme kakhulu elingeziwe.
I-Hangao Tech (i-SEKO Machinery) inolwazi olungaphezu kweminyaka engama-20 kuhlelo lokusebenza insimbi engagqwali yezimboni ipayipi ukukhiqizwa umugqa tube ukwenza imishini yokukhiqiza imboni.Ithimba le-R&D elivuthiwe kanye nochwepheshe bomhlangano bazoqhuba uhla olugcwele lokulungisa iphutha nokuqinisekisa okuphindaphindiwe kulayini ngamunye wokukhiqiza ngaphambi kokuthunyelwa, ukuze kwandiswe okokusebenza.Nciphisa ukusebenza kahle futhi unciphise ubunzima bokufakwa kamuva nokulungisa amaphutha kumakhasimende.
