Umatshini wokuwelda weLaser luhlobo lwezixhobo zokuwelda ezidla ngokusetyenziswa kwimveliso yemizi-mveliso, kwaye ikwangumatshini oyimfuneko wokulungisa imathiriyeli yelaser. Ukususela kuphuhliso lokuqala lomatshini we-laser welding ukuya kobuchwephesha obukhoyo buvuthwe ngokuthe ngcembe, iintlobo ezininzi zoomatshini bokuwelda ziye zafunyanwa, kubandakanywa umatshini wokuwelda we-laser osetyenziswa ngokubanzi, umncedisi onamandla kwimisebenzi ye-welding.
Kutheni usebenzisa irhasi yokukhusela xa udibanisa ngomatshini wokuwelda welaser ophathwa ngesandla? Umatshini we-laser obanjwe ngesandla luhlobo olutsha lwendlela yokuwelda, ngokukodwa ukuwelda izinto ezinqabileyo ezinodonga kunye namacandelo achanekileyo, onokuqonda ukuwelda, i-butt welding, i-lap welding, i-welding ye-lap, i-welding yokutywina, njl. i-porosity, ulawulo oluchanekileyo, indawo encinci ekugxilwe kuyo, ukuchaneka kwendawo ephezulu, kulula ukuyiqonda i-automation.
1. Inokukhusela i-lens ekugxilwe kuyo kungcoliseko lomphunga wesinyithi kunye nokuchaphaza kwamathontsi angamalwelo.
Irhasi ekhuselayo inokukhusela i-lens egxininisiweyo yomatshini we-laser welding ukusuka kungcoliseko lomphunga wesinyithi kunye nokuchaphaza kwamathontsi olwelo, ngakumbi kwi-welding ephezulu, kuba i-ejection iba namandla kakhulu, kwaye kubaluleke kakhulu ukukhusela ilensi ngeli xesha.
I-2.I-gas yokukhusela iyasebenza ekutshitshiseni ukukhuselwa kweplasma kumandla aphezulu we-laser welding
Umphunga wesinyithi ufunxa i-laser beam kwaye i-ionize kwilifu leplasma, kwaye igesi ekhuselayo ejikeleze umphunga wesinyithi nayo i-ionized ngenxa yobushushu. Ukuba i-plasma eninzi kakhulu ikhona, umqa we-laser uyasetyenziswa yiplasma. I-Plasma ikhona kwindawo yokusebenza njengamandla esibini, eyenza ukungena kungabi nzulu kwaye umphezulu we-weld pool ube banzi.
Izinga lokudityaniswa kwakhona kwee-elektroni linyuswe ngokunyusa ukungqubana kwemizimba emithathu yee-elektroni ngee-ion kunye nee-athomu ezingathathi hlangothi ukunciphisa ubuninzi be-electron kwiplasma. Ikhaphukhaphu yeeathom ezingathathi hlangothi, kokukhona inyuka isantya songquzulwano kwaye iphezulu ireyithi yokuhlangana kwakhona; Ngakolunye uhlangothi, kuphela igesi ekhuselayo enegunya eliphezulu le-ionization ayiyi kwandisa ubuninzi be-electron ngenxa ye-ionization yegesi ngokwayo.
3.Igesi ekhuselayo inokukhusela i-workpiece kwi-oxidation ngexesha le-welding
Umatshini we-laser welding kufuneka asebenzise uhlobo lwegesi ukukhuselwa, kwaye inkqubo kufuneka ibekwe ngendlela yokuba igesi yokukhusela ikhutshwe kuqala kwaye emva koko i-laser ikhutshwe, ukwenzela ukuthintela i-oxidation ye-laser pulsed ngexesha lokucubungula okuqhubekayo. Irhasi ye-inert inokukhusela ichibi elityhidiweyo. Xa ezinye izinto zidityanisiwe kungakhathaliseki ukuba i-oxidation yomhlaba, ukhuseleko alunakuqwalaselwa, kodwa kwizicelo ezininzi, i-helium, i-argon, i-nitrogen kunye nezinye iigesi zihlala zisetyenziswa njengokhuseleko lokukhusela i-workpiece ukuba ifakwe ngexesha le-welding. ixhomekeke kwi-oxidation.
4.Uyilo lwemingxuma yombhobho
Irhasi yokukhusela ifakwe kuxinzelelo oluthile ngokusebenzisa umbhobho ukufikelela kumphezulu womsebenzi. Ubume be-hydrodynamic bombhobho kunye nobubanzi be-outlet kubaluleke kakhulu. Kufuneka ibe nkulu ngokwaneleyo ukuqhuba igesi ekhuselayo etshisiweyo ukugubungela umphezulu we-welding, kodwa ukuze ukhusele ngokufanelekileyo i-lens kwaye uthintele umphunga wesinyithi ekungcoliseni okanye ukutshiza kwesinyithi ekonakaliseni i-lens, ubukhulu bombhobho kufuneka bukhawulelwe. Isantya sokuhamba kufuneka siphinde silawulwe, ngaphandle koko ukuhamba kwe-laminar yegesi ekhuselayo kuya kuba nesiphithiphithi, kwaye umoya uya kubandakanyeka kwi-pool etyhidiweyo, ekugqibeleni yenze iipores.
Kwi-laser welding, ukukhusela igesi kuya kuchaphazela ubume be-weld, umgangatho we-weld, ukungena kwe-weld kunye nobubanzi bokungena. Kwiimeko ezininzi, ukuvuthela igesi ekhuselayo kuya kuba nefuthe elihle kwi-weld, kodwa kunokuzisa isiphumo esibi.
Indima Encomekayo:
1) Ukuvuthelwa okuchanekileyo kwegesi yokukhusela kuya kukhusela ngokufanelekileyo i-weld pool ukunciphisa okanye ukuphepha i-oxidation;
2) Ukuvuthelwa ngokuchanekileyo kwegesi yokukhusela kunokunciphisa ngokufanelekileyo i-spatter eyenziwe ngexesha le-welding;
I-3) Ukuvuthela okuchanekileyo kwegesi yokukhusela kunokukhuthaza ukusasazeka kweyunifomu ye-weld pool xa iqina, yenza i-weld shape iyunifomu kwaye ihle;
I-4) Ukuvuthela okuchanekileyo kwegesi ekhuselayo kunokunciphisa ngokufanelekileyo impembelelo yokukhusela iplamu yesinyithi okanye ifu yeplasma kwi-laser, kunye nokunyusa izinga lokusetyenziswa kwe-laser;
I-5) Ukuvuthelwa ngokuchanekileyo kwegesi yokukhusela kunokunciphisa ngokufanelekileyo i-weld porosity.
Logama nje uhlobo lwegesi, isantya sokuhamba kwerhasi, ukhetho lwemowudi yokuvuthela ichanekile, lunokufumana umphumo ofanelekileyo. Nangona kunjalo, ukusetyenziswa kakubi kwegesi yokukhusela kuya kuzisa iziphumo ezibi kwi-welding.
Isiphumo esibi:
I-1) Ukunyuswa okungafanelekanga kwegesi ekhuselayo kunokubangela ukuba kubekho i-welds embi:
2) Ukukhetha uhlobo olungalunganga lwegesi lunokubangela ukuqhekeka kwi-weld, kwaye kunokukhokelela ekunciphiseni kweempawu zomatshini we-weld;
3) Ukukhetha isantya sokuvuthela kwerhasi engalunganga kunokukhokelela kwi-oxidation enzulu ye-weld (nokuba isantya sokuhamba sikhulu kakhulu okanye sincinci kakhulu), kwaye kunokubangela ukuba i-weld pool metal iphazamiseke kakhulu ngamandla angaphandle, okukhokelela ekuweni kwe-weld okanye ukubunjwa kokungalingani;
I-4) Ukukhetha indlela ye-injection yegesi engalunganga kuya kubangela ukuba i-weld ingaphumeleli ukufezekisa umphumo wokukhusela okanye ngokusisiseko ayinayo impembelelo yokukhusela okanye ibe nefuthe elibi kwi-weld formation;
I-5) Ukunyuswa kwegesi ekhuselayo kuya kuba nefuthe elithile ekungeneni kwe-weld, ngakumbi xa u-welding amacwecwe amancinci, kuya kunciphisa ukungena kwe-weld.
Ngokuqhelekileyo, i-helium isetyenziswe njengegesi yokukhusela, enokuthi icinezele i-plasma ukuya kwinqanaba elikhulu, ngaloo ndlela ikhulise ubunzulu bokungena kunye nokwandisa isantya se-welding; kwaye ilula ngobunzima kwaye inokuphunyuka, kwaye akukho lula ukubangela iipores. Ngokuqinisekileyo, ukusuka kwimpembelelo yethu ye-welding, umphumo wokusebenzisa ukhuseleko lwe-argon awubi.
Ukuba ufuna ukufunda ngakumbi malunga ne-laser welding, okanye ufuna ukukuthengela owona matshini wokuwelda ngelaser,nceda ushiye umyalezo kwiwebhusayithi yethu kwaye usithumelele i-imeyile ngqo!
Ixesha lokuposa: Feb-04-2023
