Laser welding inogona kuwanikwa neinoenderera kana pulsed laser jenareta. Nheyo yelaser welding inogona kukamurwa kuita kupisa conduction welding uye laser yakadzika fusion welding. Simba density isingasviki 104 ~ 105 W/cm2 kupisa conduction welding, panguva ino, kudzika kwekunyunguduka, uye welding kumhanya kunononoka; Kana simba resimba rakura kudarika 105 ~ 107 W/cm2, simbi yesimbi inonyungudika kuita "makiyi" pasi pekuita kwekupisa, ichiita yakadzika fusion welding, iyo ine maitiro ekukurumidza welding kumhanya uye yakakura kudzika-upamhi reshiyo.
Nhasi, isu tichanyanya kuvhara ruzivo rwezvinhu zvikuru zvinokanganisa kunaka kwe laser deep fusion welding
1. Laser Simba
Mune laser yakadzika fusion welding, laser simba inodzora zvese kudzika kwekupinda uye welding kumhanya. Iyo weld kudzika kwakanangana neiyo beam simba density uye ibasa rechiitiko chesimbi simba uye danda rinotarisa nzvimbo. Kazhinji kutaura, kune imwe dhayamita laser danda, kudzika kwekupinda kunowedzera nekuwedzera kwesimba resimbi.
2. Focal Spot
Beam spot size imwe yeanonyanya kukosha machinjiro mu laser welding nekuti inosarudza kusimba kwesimba. Asi kuzviyera zvinonetsa kune akakwira-simba lasers, kunyangwe paine akawanda asina kunanga ekuyera maitiro aripo.
Iyo diffraction inogumira nzvimbo saizi yebeam inotariswa inogona kuverengerwa zvichienderana neiyo diffraction theory, asi saizi chaiyo yemavara ihombe pane yakaverengerwa kukosha nekuda kwekuvapo kwekutadza kutarisisa. Iyo yakapfava yekuyera nzira ndeye iso-tembiricha profile nzira, iyo inoyera dhayamita yenzvimbo yakatarisa uye kubobora mushure mekunge bepa gobvu rapiswa uye kupindwa neplate yepolypropylene. Iyi nzira kuburikidza neyeyero yekudzidzira, masters iyo laser simba saizi uye beam chiito nguva.
3. Dziviriro Gasi
Iyo laser welding process inowanzo shandisa magasi anodzivirira (helium, argon, nitrogen) kuchengetedza dziva rakanyungudutswa, kudzivirira iyo workpiece kubva kune oxidation mune welding process. Chikonzero chechipiri chekushandisa gasi rinodzivirira kuchengetedza lens inotarisisa kubva mukusvibiswa nemhute yesimbi uye kupfirwa nemadonhwe emvura. Kunyanya mune yakakwirira-simba laser welding, iyo ejecta inova yakasimba kwazvo, inofanirwa kuchengetedza lens. Mhedzisiro yechitatu yegasi rekudzivirira ndeyekuti inoshanda zvakanyanya mukuparadzira plasma shielding inogadzirwa nepamusoro-simba laser welding. Iyo simbi mhute inobata laser beam uye ionize kuita plasma gore. Iyo gasi rinodzivirira rakatenderedza mhute yesimbi zvakare ionize nekuda kwekupisa. Kana paine plasma yakawandisa, iyo laser beam inopedzwa neimwe nzira neplasma. Sesimba rechipiri, plasma iripo panzvimbo yekushanda, izvo zvinoita kuti kudzika kweweld kuve kushoma uye weld pool pamusoro pakafaranuka.
Nzira yekusarudza zvakakodzera kudzivirira gasi ?
4. Mutengo Wekutora
Kunyura kwelaser kwechinyorwa kunoenderana nezvimwe zvakakosha zvechinyorwa, senge kunyudza mwero, kuratidza, kupisa conductivity, kunyunguduka tembiricha, uye evaporation tembiricha. Pakati pezvinhu zvose, chinonyanya kukosha ndeyekutorwa kwehuwandu.
Zvinhu zviviri zvinokanganisa kunyudzwa kwechinyorwa kune laser beam. Yokutanga ndiyo inopikisa coefficient yezvinhu. Inowanikwa kuti kunyura kwechinyorwa kunoenderana nesquare midzi yepikisi coefficient, uye inopikisa coefficient inosiyana nekupisa. Chechipiri, mamiriro epamusoro (kana kupedzisa) kwechinyorwa ane pesvedzero yakakosha payero yekunyudza kwedanda, iyo ine mhedzisiro yakakosha pane welding mhedzisiro.
5. Welding Speed
The welding speed ine simba guru pakudzika kwekupinda. Kuwedzera kumhanya kuchaita kuti kudzika kwekupinda kuve kushoma, asi kuderera zvakanyanya kunotungamira mukunyungudika kwakanyanya kwezvinhu uye workpiece welding kuburikidza. Naizvozvo, kune yakakodzera welding yekumhanyisa renji yechimwe chinhu chine imwe laser simba uye imwe ukobvu, uye iyo yakanyanya kudzika yekupinda inogona kuwanikwa pahukoshi hwekumhanya hunoenderana.
6. Kureba kwakatarisana kweiyo Focus Lens
A focus lens inowanzoiswa mumusoro we welding gun, kazhinji, a 63 ~ 254mm (diameter 2.5 "~ 10") focal urefu inosarudzwa. Saizi yemavara inoenzanirana nehurefu hwefocal, kupfupika kweurefu hwepakati, nzvimbo idiki. Nekudaro, kureba kwehurefu hwekutarisa kunobatawo kudzika kwekutarisa, ndiko kuti, kudzika kwekutarisa kunowedzera zvakaenderana nehurefu hwakatarisana, saka iyo pfupi yekutarisa kureba inogona kuvandudza simba remagetsi, asi nekuti kudzika kwekutarisa kudiki, chinhambwe. pakati pe lens uye workpiece inofanira kuchengetedzwa zvakarurama, uye kudzika kwekupinda hakusi kukuru. Nekuda kwesimba re splashes uye laser modhi panguva yewelding, kupfupika kwakadzika kwakadzika kunoshandiswa mukunama chaiko kunowanzo 126mm (diameter 5 "). Lens ine focal kureba kwe254mm (diameter 10 ") inogona kusarudzwa kana musono wakakura. kana weld inoda kuwedzerwa nekuwedzera saizi yenzvimbo. Mune ino kesi, yakakwira laser inobuda simba (simba density) inodiwa kuti uwane yakadzika yekupinda gomba mhedzisiro.
Mimwe mibvunzo nezve handheld laser welding muchina mutengo uye kumisikidzwa
Nguva yekutumira: Sep-27-2022