I-Laser Welding ihloswe ngakhethwe ikakhulukazi ekuthuthukiseni ukusebenza kahle kwe-welding kanye nekhwalithi yezinto zodonga oluncanyana nezingxenye ezinembile. Namuhla ngeke sikhulume ngezinzuzo ze-laser welding kodwa sigxile ekutheni sisebenzise kanjani ukuvikela amagesi we-laser welding ngendlela efanele.
Kungani usebenzise i-Shield Gas for Laser Welding?
E-laser welding, igesi yesihlangu izothinta ukwakheka kwe-weld, ikhwalithi ye-weld, ukujula kwamandla, kanye nobubanzi be-wald. Ezimweni eziningi, ukushaya igesi esizwayo kuzoba nomthelela omuhle ku-weld, kepha kungaletha nemiphumela emibi.
Uma ushaya isihlangu igesi kahle, kuzokusiza:
✦Ukuvikela ngempumelelo ichibi le-weld ukuze unciphise noma uvikele ngisho nokugwema i-oxidation
✦Yehlisa ngempumelelo i-splash ekhiqizwa kwinqubo ye-welding
✦Yehlisa ngempumelelo ama-pores we-weld
✦Asize ichibi le-weld lisakazeke ngokulinganayo lapho kuqiniswa, ukuze umthungo we-weld uze nomkhawulo ohlanzekile futhi obushelelezi
✦Umphumela wokuvikelwa we-peral vapor plume noma ifu le-plasma ku-laser kuncishiswa ngempumelelo, futhi izinga lokusetshenziswa elisebenzayo le-laser lenyuka.
Inqobo nje umaisihlangu segesi, izinga lokugeleza kwegesi, nokukhethwa kwemodi yokushayazilungile, ungathola umphumela ofanele wokufudumala. Kodwa-ke, ukusetshenziswa okungalungile kwegesi evikelayo nakho kungathinta kabi ukufudumala. Kusetshenziswa uhlobo olungalungile lwegesi lwegesi kungaholela kuma-creaks e-weld noma ukunciphisa izakhiwo zemishini zokufudumala. Kuphezulu kakhulu noma kuphansi kakhulu izinga eligelezayo legesi kungaholela ekuphazanyisweni okungathi sína kwe-weld oxidation kanye nokuphazamiseka kwangaphandle kwangaphandle kwezinto zensimbi ngaphakathi echibini leWeld, okuholela ekuweni kweWeld noma ekulweni okungalingani.
Izinhlobo zegesi yesihlangu
Amagesi asetshenziswa kakhulu wokuvikela we-laser welding ikakhulukazi uN2, AR, futhi yena. Izakhiwo zazo ezingokomzimba nezamakhemikhali zihlukile, ngakho-ke imiphumela yazo kuma-welds nayo ihlukile.
Nitrogen (N2)
Ama-Ionization Energy of N2 alinganiselwe, aphakeme kunale a ar, futhi aphansi kunaleyo yaYe. Ngaphansi kwemisebe ye-laser, i-ionization degree of N2 ihlala eKeel ngisho ne-keel, enganciphisa kangcono ukwakheka kwefu le-plasma futhi yandise izinga lokusebenzisa le-laser. I-nitrogen ingasabela nge-aluminium alloy ne-carbon yensimbi endaweni yokushisa ethile ukukhiqiza ama-nitrides, azothuthukisa ubucwebe bewelden futhi anciphise ubulukhuni, futhi abe nomthelela omkhulu wezakhiwo zemishini zokujoyina ama-weld. Ngakho-ke, akunconywa ukusebenzisa i-nitrogen lapho i-aluminium alloy ne-carbon yensimbi.
Kodwa-ke, ukusabela kwamakhemikhali phakathi kwe-nitrogen kanye nensimbi engenacala kukhiqizwe yi-nitrogen kungathuthukisa amandla okuhlanganiswa kwe-weld, okuzoba yinzuzo ukuthuthukisa izakhiwo zemishini, ngakho-ke i-welding yensimbi engenasici ingasebenzisa i-nitrogen njengegesi evikelekile.
I-Argon (AR)
Ama-ionization amandla e-argon aphansi, futhi izinga lawo le-ionization lawo lizoba liphakeme ngaphansi kwesenzo se-laser. Ngemuva kwalokho, i-argon, njengegesi evikekile, ayikwazi ukulawula ngempumelelo ukwakheka kwamafu we-plasma, azonciphisa izinga lokusebenzisa elisebenzayo le-laser welding. Umbuzo uphakama: Ingabe i-argon ingumuntu ozongenela ukhetho lokusetshenziswa kwe-welding njengegesi evikelekile? Impendulo ngu-Cha Ngaphezu kwalokho, ubuningi be-AR bukhulu, buzosiza ukucwila ebusweni be-weld molten pool futhi kungavikela kangcono i-weld pool, ngakho-ke i-argon ingasetshenziswa njengegesi evamile yokuvikela.
Helium (He)
Ngokungafani ne-argen, i-helium inamandla aphezulu ama-ionization amandla angalawula ukwakheka kwamafu we-plasma kalula. Ngasikhathi sinye, i-helium ayisabeli nanoma yiziphi izinsimbi. Kuyindlela enhle yokuthola i-laser welding. Inkinga kuphela ukuthi i-Helium iyabiza kakhulu. Okwezakwakhe abahlinzeka ngemikhiqizo yensimbi yokukhiqiza abaningi, i-helium izokwengeza inani elikhulu kwizindleko zokukhiqiza. Ngakho-ke i-helium ngokuvamile isetshenziswa ocwaningweni lwesayensi noma imikhiqizo enenani eliphakeme kakhulu lengezwe.
Ungayishaya kanjani igesi yesihlangu?
Okokuqala, kufanele kucace ukuthi lokho okubizwa nge- "oxidation" yeWeld kuphela igama elijwayelekile, elibhekisela ekuphenduleni kwamakhemikhali phakathi kweWeld, okuholela ekuwohlokeni kwe-Weld . Ngokuvamile, insimbi ye-weld ihlangana ngo-oksijini, i-nitrogen, ne-hydrogen emoyeni emazingeni okushisa athile.
Ukuvimbela i-weld ekubeni "oxidised" kudinga ukunciphisa noma ukugwema ukuxhumana phakathi kwezinto eziyingozi kanye nensimbi eshisayo ngaphansi kwe-molten pool metal kodwa i-weld insimbi incibilika kuze kube I-molten pool metal iqiniswe futhi izinga lokushisa laso lipholisa phansi kumazinga okushisa athile.
Izindlela ezimbili eziphambili zokushaya igesi
▶Eyodwa ishaya igesi yakuvikayo e-axis eseceleni, njengoba kukhonjisiwe kuMfanekiso 1.
▶Enye indlela ye-coaxial blowing indlela, njengoba kukhonjisiwe kuMfanekiso 2.
Umdwebo 1.
Umdwebo 2.
Ukukhetha okukhethekile kwezindlela ezimbili zokushaya kungukucatshangelwa okuningana kwezici eziningi. Ngokuvamile, kunconywa ukuthi kwamukele indlela yegesi evuthayo eceleni.
Ezinye izibonelo zikaLaser Welding
1. Ubuhlalu obuqondile / umugqa welding
Njengoba kukhonjisiwe kuMdwebo 3, ukwakheka kwe-Weld komkhiqizo kulayini, futhi ifomu elihlanganyelwe lingaba yi-butt ehlanganisiwe, elihlanganisiwe le-butt, elihlangene elihlangene, noma elihlanganiswe ne-welding elihlanganisiwe. Ngalolu hlobo lomkhiqizo, kungcono ukwamukela igesi eliseceleni elivuthayo njengoba kukhonjisiwe kuMfanekiso 1.
2. Vala isibalo noma indawo yelding
Njengoba kukhonjisiwe kuMdwebo 4, ukwakheka kwe-Weld komkhiqizo kuyindlela evaliwe efana nokujikeleza kwendiza, i-Plane Multilateral Rape, njll. Kungcono ukwamukela indlela yokuvikela igesi evikelayo njengoba kukhonjisiwe kuMfanekiso 2 ngalo mkhiqizo.
Ukukhethwa kwegesi evikelayo kuthinta ngqo ikhwalithi ye-welding, ukusebenza kahle, kanye nezindleko zokukhiqizwa, kepha ngenxa yokwehlukahlukana kwezinto eziphilayo, enqubweni ye-welding yangempela, ukukhethwa kwegesi ye-welding kuyinkimbinkimbi kakhulu futhi kudinga ukucubungula okuphelele kwezinto zokufafaza, ukufuza Indlela, isikhundla se-welding, kanye nezidingo zomphumela we-welding. Ngokuhlolwa kwe-welding, ungakhetha igesi efanelekayo ye-welding ukuze uzuze imiphumela engcono.
Unentshisekelo eLaser Welding futhi uzimisele ukufunda ukuthi ungayikhetha kanjani isihlangu segesi
Izixhumanisi ezihlobene:
Isikhathi Sokuthumela: Oct-10-2022