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Kungani Imishini Yokushisela I-Laser Idinga Igesi Lapho Ishisela

Kungani Imishini Yokushisela I-Laser Idinga Igesi Lapho Ishisela


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Umshini wokushisela we-laser uwuhlobo lwemishini yokushisela evame ukusetshenziswa ekukhiqizeni izimboni, futhi ungumshini obalulekile wokucubungula impahla ye-laser. Kusukela ekuthuthukisweni kokuqala komshini wokushisela we-laser kuya kubuchwepheshe bamanje buvuthwe kancane kancane, izinhlobo eziningi zemishini yokushisela ziye zatholakala, kuhlanganise nomshini wokushisela we-laser osetshenziswa kakhulu osetshenziswa ngesandla, umsizi onamandla wemisebenzi yokushisela.

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Kungani usebenzise igesi yokuvikela lapho ushisela ngomshini wokushisela we-laser ophathwa ngesandla? Umshini wokushisela we-laser ophethwe ngesandla uwuhlobo olusha lwendlela yokushisela, ikakhulukazi yokushisela izinto zokwakha ezinodonga oluncane kanye nezingxenye ezinembayo, ezikwazi ukubona ukushisela kwe-butt, i-lap welding, i-lap welding, i-sealing welding, njll., enezinga eliphezulu lokujula, ububanzi be-weld encane, nokushisa Indawo encane ethintekile, ukuguqulwa okuncane, isivinini sokushisela, ukuthunga okubushelelezi nokuhle, ukuthunga ikhwalithi ephezulu, asikho isidingo sokubhekana nekhwalithi ephezulu kuphela, asikho isidingo sokubhekana nokuthunga ngemva kokuthunga, asikho isidingo sokubhekana nokuthunga ngemva kokuthunga. i-porosity, isilawuli esinembile, indawo encane yokugxila, ukunemba kokuma okuphezulu, ukuqaphela okulula ukuzenzekelayo.

1. Ingavikela ilensi egxilile ekungcolisweni komhwamuko wensimbi nokuchaphazeka kwamaconsi awuketshezi.

Igesi evikelayo ingavikela i-lens egxilile yomshini wokushisela we-laser ekungcolisweni komhwamuko wensimbi kanye nokufafaza kwamaconsi angama-liquid, ikakhulukazi ekushiseleni okunamandla amakhulu, ngoba i-ejection iba namandla kakhulu, futhi kudingekile kakhulu ukuvikela ilensi ngalesi sikhathi.

I-2.I-Shielding gas iyasebenza ekuhlakazeni isivikelo se-plasma kusuka kumandla aphezulu we-laser welding

Umhwamuko wensimbi udonsa i-laser beam bese u-ionze ungene efwini le-plasma, futhi igesi evikelayo ezungeze umhwamuko wensimbi nayo yenziwa i-ion ngenxa yokushisa. Uma i-plasma eningi ikhona, i-laser beam ithi idliwe yi-plasma. I-Plasma ikhona endaweni yokusebenza njengamandla esibili, okwenza ukungena kungashoni futhi ingaphezulu le-weld pool livuleke.

Izinga lokuhlanganiswa kabusha kwama-electron likhuphuka ngokwandisa ukushayisana kwemizimba emithathu yama-electron ane-ion nama-athomu angathathi hlangothi ukuze kuncishiswe ukuminyana kwama-electron ku-plasma. Ukukhanya kwama-athomu angathathi hlangothi, kuyanda imvamisa yokushayisana kanye nezinga lokuhlanganisa kabusha; ngakolunye uhlangothi, igesi elivikelayo kuphela elinamandla aphezulu e-ionization ngeke likhulise ukuminyana kwe-electron ngenxa ye-ionization yegesi ngokwayo.

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I-3.Igesi evikelayo ingavikela i-workpiece kusuka ku-oxidation ngesikhathi sokushisela

Umshini wokushisela we-laser kufanele usebenzise uhlobo lwegesi ukuvikela, futhi uhlelo kufanele lubekwe ngendlela yokuthi igesi yokuvikela ikhishwe kuqala bese i-laser ikhishwa, ukuze kuvinjwe i-oxidation ye-pulsed laser ngesikhathi sokucubungula okuqhubekayo. Igesi ye-inert ingavikela ichibi elincibilikisiwe. Lapho ezinye izinto ezishiselwe kungakhathaliseki ukuthi i-oxidation yangaphezulu, ukuvikelwa kungase kungacatshangwa, kodwa ezisetshenziswa eziningi, i-helium, i-argon, i-nitrogen namanye amagesi avame ukusetshenziswa njengesivikelo sokuvimbela umshini wokusebenza ukuthi ungashiswa ngesikhathi sokushisela. ngaphansi kwe-oxidation.

4.Umklamo wezimbobo ze-nozzle

Igesi evikelayo ijovwa ngengcindezi ethile ngokusebenzisa i-nozzle ukuze ifinyelele phezulu kwendawo yokusebenza. Umumo we-hydrodynamic we-nozzle kanye nobubanzi be-outlet kubaluleke kakhulu. Kufanele ibe nkulu ngokwanele ukushayela igesi eyisivikelo efuthiweyo ukuze imboze indawo yokushisela, kodwa ukuze uvikele ngempumelelo ilensi futhi uvimbele umhwamuko wensimbi ekungcoliseni noma ukuchaphazeka kwensimbi ekulimazini i-lens, ubukhulu bomlomo kufanele bukhawulelwe. Izinga lokugeleza kufanele futhi lilawulwe, ngaphandle kwalokho ukugeleza kwe-laminar yegesi evikelayo kuzoba nesiyaluyalu, futhi umkhathi uzohileleka echibini elincibilikisiwe, ekugcineni wenze ama-pores.

Ku-laser welding, igesi yokuvikela izothinta ukwakheka kwe-weld, ikhwalithi ye-weld, ukungena kwe-weld kanye nobubanzi bokungena. Ezimweni eziningi, ukuvunguza igesi evikelayo kuzoba nomthelela omuhle ku-weld, kodwa kungase futhi kubangele umphumela omubi.

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Iqhaza Elihle:

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 sokushisela;

3) Ukushaywa okulungile kwegesi yokuzivikela kungakhuthaza ukusabalalisa iyunifomu ye-weld pool lapho iqina, okwenza i-weld shape iyunifomu futhi inhle;

4) Ukuvunguza okulungile kwegesi yokuvikela kunganciphisa ngempumelelo umphumela wokuvikela wensimbi yomusi noma ifu le-plasma ku-laser, futhi kukhuphule izinga lokusebenzisa elisebenzayo le-laser;

I-5) Ukushaywa kahle kwegesi evikelayo kunganciphisa ngempumelelo i-weld porosity.

Inqobo nje uma uhlobo lwegesi, izinga lokugeleza kwegesi, ukukhetha kwemodi yokuphefumula kulungile, kungathola umphumela ofanele. Kodwa-ke, ukusetshenziswa okungalungile kwegesi yokuzivikela kuzoletha nemiphumela emibi ekushiseleni.

Umthelela omubi:

I-1) Ukungeniswa okungafanele kwegesi evikelayo kungase kubangele ukushisela okungalungile:

2) Ukukhetha uhlobo olungalungile lwegesi kungabangela imifantu ku-weld, futhi kungase kuholele ekunciphiseni kwezakhiwo zemishini ye-weld;

I-3) Ukukhetha izinga lokugeleza elingalungile lokuphefumula kwegesi kungase kuholele ku-oxidation eyingozi kakhulu ye-weld (kungakhathaliseki ukuthi izinga lokugeleza likhulu kakhulu noma lincane kakhulu), futhi kungase kubangele ukuthi insimbi ye-weld pool iphazamiseke kakhulu ngamandla angaphandle, okuholela ekuweni kwe-weld noma ukwakheka okungalingani;

I-4) Ukukhetha indlela engalungile yomjovo wegesi kuzobangela ukuthi i-weld ihluleke ukufeza umphumela wokuvikela noma ngokuyisisekelo ingabi nomphumela wokuvikela noma ibe nomthelela omubi ekubunjweni kokushisela;

I-5) Ukufakwa kwegesi yokuzivikela kuzoba nomthelela othile ekungeneni kwe-weld, ikakhulukazi uma u-welding amapuleti amancane, kuzonciphisa ukungena kwe-weld.

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Ngokuvamile, i-helium isetshenziswa njengegesi evikelayo, engacindezela i-plasma ngezinga elikhulu, ngaleyo ndlela ikhulise ukujula kokungena futhi ikhulise isivinini sokushisela; futhi ilula ngesisindo futhi ingaphunyuka, futhi akulula ukubangela izimbotshana. Yiqiniso, kusukela kumphumela wethu we-welding wangempela, umphumela wokusebenzisa ukuvikelwa kwe-argon awumubi.

Uma ufuna ukufunda okwengeziwe nge-laser welding, noma ufuna ukukuthengela umshini wokushisela we-laser,sicela ushiye umlayezo kuwebhusayithi yethu futhi usithumele i-imeyili ngokuqondile!


Isikhathi sokuthumela: Feb-04-2023
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