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I-Laser ye-Wave eqhubekayo
I-CW, isifinyezo se-"Continuous Wave," ibhekiselele kwiinkqubo ze-laser ezikwazi ukubonelela ngemveliso yelaser engaphazamisekiyo ngexesha lokusebenza. Ephawulwa ngokukwazi kwabo ukukhupha i-laser ngokuqhubekayo de kuphele ukusebenza, ii-laser zeCW zohlulwa ngamandla azo asezantsi encopho kunye namandla aphakathi aphezulu xa kuthelekiswa nezinye iintlobo zeelases.
Uluhlu olubanzi lwezicelo
Ngenxa yesici sabo esiqhubekayo sokuphuma, ii-laser zeCW zifumana ukusetyenziswa okubanzi kwiinkalo ezifana nokusika isinyithi kunye ne-welding yobhedu kunye ne-aluminium, ezenza zibe phakathi kweyona ndlela ixhaphakileyo kwaye isetyenziswa ngokubanzi kwii-lasers. Ukukwazi kwabo ukuhambisa imveliso yamandla ezinzileyo kunye engaguqukiyo ibenza baxabiseke kuzo zombini iinkqubo ezichanekileyo kunye neemeko zemveliso yobuninzi.
Iiparamitha zoLungiso lweNkqubo
Ukulungelelanisa i-laser ye-CW ukuze usebenze ngokugqibeleleyo kubandakanya ukugxila kwiiparamitha ezininzi eziphambili, kubandakanya i-wave wave, isixa se-defocus, i-diameter yendawo ye-beam, kunye nesantya sokusebenza. Ulungelelwaniso oluchanekileyo lwezi parameters lubalulekile ekufezekiseni ezona ziphumo zilungileyo zokusetyenzwa, ukuqinisekisa ukusebenza kakuhle kunye nomgangatho kwimisebenzi ye-laser machining.
Umzobo oqhubekayo waMandla eLaser
Iimpawu zokusasazwa kwamandla
Uphawu oluphawulekayo lwee-laser ze-CW lusasazo lwazo lwamandla e-Gaussian, apho usasazo lwamandla lwe-laser beam's cross-section kuncipha ukusuka embindini ukuya ngaphandle kwipateni ye-Gaussian (usasazo oluqhelekileyo). Olu phawu lokusasaza luvumela iilaser zeCW ukuba zifezekise ukuchaneka kokugqalisela okuphezulu kakhulu kunye nokusebenza kakuhle, ngakumbi kwizicelo ezifuna ukuhanjiswa kwamandla okugxininiswe.
Umzobo weCW Laser wokusasazwa kwamandla
Izinto ezilungileyo ze-Wave eqhubekayo (CW) i-Laser Welding
Umbono weMicrostructural
Ukuphonononga i-microstructure yesinyithi ityhila iingenelo ezahlukileyo ze-Laser Wave (CW) welding ngaphezulu kwe-Quasi-Continuous Wave (QCW) pulse welding. I-QCW pulse welding, inyanzelwa ngumda wayo wokuphindaphinda, ngokuqhelekileyo malunga ne-500Hz, ijongene norhwebo phakathi kwezinga lokudlulana kunye nobunzulu bokungena. Izinga eliphantsi lokudityaniswa likhokelela kubunzulu obungonelanga, ngelixa izinga eliphezulu lokudityaniswa linciphisa isantya se-welding, yehlisa ukusebenza kakuhle. Ngokwahlukileyo koko, ukuwelda kwe-laser ye-CW, ngokukhethwa kweedamitha ezingundoqo ze-laser ezifanelekileyo kunye neentloko ze-welding, ifezekisa ngokufanelekileyo kunye nokuqhubekayo. Le ndlela ibonisa ukuthembeka ngokukodwa kwizicelo ezifuna ingqibelelo yotywino oluphezulu.
Ukuqwalaselwa kweMpembelelo yeThermal
Ukususela kumbono wempembelelo ye-thermal, i-QCW pulse laser welding ihlupheka kumcimbi wokugqithiswa, okukhokelela ekufudumeni okuphindaphindiweyo kwe-weld seam. Oku kunokwazisa ukungahambelani phakathi kwe-microstructure yesinyithi kunye nempahla yomzali, kubandakanywa ukuhluka kobukhulu bokuchithwa kunye namazinga okupholisa, ngaloo ndlela kwandisa umngcipheko wokuqhekeka. I-CW ye-laser welding, ngakolunye uhlangothi, iyayinqanda le ngxaki ngokubonelela ngenkqubo yokufudumala efanayo kunye nokuqhubekayo.
UkuLula koLungiso
Ngokumalunga nokusebenza kunye nohlengahlengiso, i-QCW laser welding ifuna ukulungiswa okucokisekileyo kweeparamitha ezininzi, kubandakanya ukuphindaphinda i-pulse frequency, amandla aphezulu, ububanzi be-pulse, umjikelo womsebenzi, kunye nokunye. I-CW ye-laser welding yenza lula inkqubo yohlengahlengiso, igxile ikakhulu kwi-waveform, isantya, amandla, kunye nesixa se-defocus, yenza lula kakhulu ubunzima bokusebenza.
Inkqubela phambili yeTekhnoloji kwi-CW Laser Welding
Ngelixa ukuwelda kwe-laser ye-QCW yaziwa ngamandla ayo aphezulu aphezulu kunye negalelo eliphantsi lobushushu, iluncedo ekudibaniseni izinto ezingevani nobushushu kunye nezixhobo ezinodonga olubhityileyo, ukuqhubela phambili kwitekhnoloji ye-CW laser welding, ngakumbi kusetyenziso lwamandla aphezulu (ngokuqhelekileyo ngaphezulu kwe-500 watts) kunye i-welding yokungena enzulu ngokusekelwe kwisiphumo se-keyhole, yandise kakhulu uluhlu lwesicelo sayo kunye nokusebenza kakuhle. Olu hlobo lwe-laser lufaneleke ngokukodwa kwizinto ezityebileyo kune-1mm, ukufikelela kwimilinganiselo ephezulu (ngaphezulu kwe-8: 1) nangona igalelo eliphezulu lobushushu.
I-Quasi-Continuous Wave (QCW) i-Laser Welding
Ukwabiwa kwaMandla agxilileyo
I-QCW, emele "i-Quasi-Continuous Wave," imele iteknoloji ye-laser apho i-laser ikhupha ukukhanya ngendlela engapheliyo, njengoko kuboniswe kumfanekiso a. Ngokungafaniyo nokuhanjiswa kwamandla afanayo kwimowudi enye eqhubekayo yelases, iilaser ze-QCW zigxininisa amandla azo ngakumbi. Olu phawu lunika iilaser ze-QCW amandla aphezulu oxinaniso, ukuguqulela kwisakhono esinamandla sokungena. Isiphumo sesiphumo se-metallurgical sifana nesimo "sesikhonkwane" esinomlinganiselo obalulekileyo wobunzulu ukuya kububanzi, okuvumela i-laser ye-QCW ukuba igqwese kwizicelo ezibandakanya i-alloys ephezulu, izinto ezithintekayo ukushisa, kunye nokuchaneka kwe-micro-welding.
Uzinzo olomeleziweyo kunye nokuNcitshiswa kwePlume Interference
Enye yeenzuzo ezichaziweyo ze-QCW laser welding kubuchule bayo bokunciphisa iziphumo zentsimbi yentsimbi kwinqanaba lokufunxa izinto, okukhokelela kwinkqubo ezinzile. Ngexesha lokusebenzisana kwe-laser-material, i-evaporation emandla inokudala umxube womphunga wesinyithi kunye neplasma ngaphezulu kwechibi elinyibilikayo, elidla ngokubizwa ngokuba yintsimbi yentsimbi. Le ngqayi inokukhusela umphezulu wemathiriyeli kwilaser, ibangele unikezelo lwamandla olungazinzanga kunye neziphene ezifana nesitshizi, iindawo ezigqabhukileyo, kunye nemingxuma. Nangona kunjalo, ukukhutshwa okwethutyana kwee-lases ze-QCW (umzekelo, ukugqabhuka kwe-5ms kulandelwa kukunqumama kwe-10ms) kuqinisekisa ukuba i-laser pulse nganye ifikelela kumphezulu we-material engachatshazelwanga yintsimbi yentsimbi, ekhokelela kwinkqubo ye-welding ezinzileyo, ngakumbi enenzuzo kwi-welding-sheet welding.
Uzinzo Melt Pool Dynamics
I-dynamics ye-melt pool, ngokukodwa ngokumalunga nemikhosi esebenza kumngxuma wesitshixo, ibalulekile ekumiseleni umgangatho we-weld. Iilaser eziqhubekayo, ngenxa yokuvezwa kwazo ixesha elide kunye neendawo ezinkulu ezichatshazelwa bubushushu, zikholisa ukwenza amachibi amakhulu okunyibilika azaliswe yintsimbi engamanzi. Oku kunokukhokelela kwiziphene ezinxulumene namachibi amakhulu anyibilikayo, njengokuwa komngxuma wesitshixo. Ngokwahlukileyo, amandla agxininisiweyo kunye nexesha elifutshane lokusebenzisana kwe-QCW laser welding igxininise i-melt pool ejikeleze i-keyhole, okukhokelela ekuhanjisweni kwamandla afanayo kunye nesiganeko esisezantsi se-porosity, ukuqhekeka, kunye nokutshiza.
Indawo eNcitshiswayo kubushushu (HAZ)
Izifundo ze-laser welding eziqhubekayo kubushushu obuqhubekayo, okukhokelela ekuqhubeni okubalulekileyo kwe-thermal kwizinto eziphathekayo. Oku kunokubangela ukuguqulwa kwe-thermal okungafunekiyo kunye neziphene ezibangelwa uxinzelelo kwizinto ezincinci. Ii-lasers ze-QCW, kunye nokusebenza kwazo okwethutyana, zivumela ixesha lezinto zokupholisa, ngaloo ndlela kuncitshiswe indawo echaphazeleke kubushushu kunye negalelo le-thermal. Oku kwenza i-laser ye-QCW ye-welding ifaneleke ngokukodwa kwizinto ezibhityileyo kunye nezo zikufutshane nezinto ezingevani nobushushu.
Amandla aphezulu ePeak
Ngaphandle kokuba namandla aphakathi afanayo njengama-lasers aqhubekayo, iilaser ze-QCW zifikelela kumandla aphezulu aphezulu kunye noxinaniso lwamandla, okukhokelela ekungeneni okunzulu kunye nobuchule bokuqina bokuwelda. Olu ncedo lubonakaliswa ngokukodwa kwi-welding yobhedu kunye ne-aluminium alloys ' sheets ezincinci. Ngokwahlukileyo, iilaser eziqhubekayo ezinamandla aphakathi okufanayo zinokusilela ukwenza uphawu kumphezulu wemathiriyeli ngenxa yoxinano lwamandla olusezantsi, olukhokelela ekubonakaliseni. Amandla aphezulu e-laser aqhubekayo, ngelixa ekwazi ukunyibilikisa izinto, anokufumana ukunyuka okubukhali kwisantya sokufunxa emva kokunyibilika, okubangela ubunzulu obungalawulekiyo bokunyibilika kunye negalelo le-thermal, elingafanelekanga kwi-welding yephepha elincinci kwaye kunokubangela ukuba kungabikho uphawu okanye ukutshisa. -ngokusebenzisa, ukusilela ukuhlangabezana neemfuno zenkqubo.
Ukuthelekiswa kweziphumo ze-welding phakathi kwe-CW kunye ne-QCW lasers
a. ILaser yeWave eqhubekayo (CW):
- Ukubonakala kwesikhonkwane esitywinwe nge-laser
- Ukubonakala kwe-weld seam echanekileyo
- Umzobo weskimu sokukhutshwa kwelaser
- Inxalenye enqamlezayo yobude
b. ILaser yeQuasi-Continuous Wave (QCW):
- Ukubonakala kwesikhonkwane esitywinwe nge-laser
- Ukubonakala kwe-weld seam echanekileyo
- Umzobo weskimu sokukhutshwa kwelaser
- Inxalenye enqamlezayo yobude
- * Umthombo: Inqaku nguWildong, nge-akhawunti ye-WeChat yoLuntu iLaserLWM.
- * Ikhonkco lenqaku lokuqala: https://mp.weixin.qq.com/s/8uCC5jARz3dcgP4zusu-FA.
- Umxholo weli nqaku unikezelwe ngeenjongo zokufunda kunye nonxibelelwano kuphela, kwaye yonke i-copyright yeyombhali wokuqala. Ukuba ukophulwa kwelungelo lokushicilela kubandakanyeka, nceda uqhagamshelane ukuze ususe.
Ixesha lokuposa: Mar-05-2024