Kuenzanisa kwemhedzisiro yekuwelding yema lasers ane dhayamita dzakasiyana dzepakati

Kushongedza neLaserzvinogona kuwanikwa uchishandisa mabara elaser anoenderera mberi kana kuti anotenderera. Nheyo dzewelding nelaserinogona kukamurwa kuita welding yekupisa conduction uye welding yelaser deep penetration. Kana density yesimba iri pasi pe104~105 W/cm2, i welding yekupisa conduction. Panguva ino, kudzika kwekupinda kwakadzika uye kumhanya kwewelding kunononoka; kana density yesimba iri kupfuura 105~107 W/cm2, pamusoro pesimbi panopinda mu "maburi" nekuda kwekupisa, zvichiita welding yekupinda yakadzika, iyo ine hunhu hwekumhanya kwewelding nekukurumidza uye chiyero chikuru. Nheyo ye thermal conductionwelding nelaserndeichi: mwaranzi yelaser inopisa pamusoro pechinhu chinofanira kugadziriswa, uye kupisa kwepasi kunopararira mukati mechinhu kuburikidza nekupisa. Nekudzora maparamita elaser akadai sehupamhi hwelaser pulse, simba, simba repamusoro, uye kudzokorora kakawanda, chinhu chebasa chinonyungudutswa kuti chigadzire dziva rakanyungudutswa.

Kupinza kweLaser deep penetration kunowanzo shandisa danda reLaser rinoenderera mberi kupedzisa kubatana kwezvinhu. Maitiro aro esimbi akafanana neaya ekubatanidza maerekitironi, kureva kuti, nzira yekushandura simba inopedzwa kuburikidza nechimiro che "key-hole".

Pasi pemwaranzi yelaser ine simba rakawanda, zvinhu zvinopera uye maburi madiki anoumbwa. Gomba diki iri rakazadzwa neutsi rakaita semuviri mutema, richitora simba rese remwaranzi yechiitiko. Tembiricha yekuenzanisa mugomba inosvika 2500°C. Kupisa kunotamiswa kubva pamadziro ekunze egomba rinopisa zvakanyanya, zvichiita kuti simbi yakakomberedza gomba inyunguduke. Buri diki rinozadzwa nemhepo inopisa zvikuru inokonzerwa nekubuda kwemvura kumadziro pasi pekupiswa kwedanda. Madziro egomba diki akakomberedzwa nesimbi yakanyungudutswa, uye simbi yemvura yakakomberedzwa nezvinhu zvakasimba (mumaitiro mazhinji ekugadzira welding uye laser conduction welding, simba rinotanga raiswa pamusoro pechinhu chebasa rozoendeswa mukati nekutamiswa). Kuyerera kwemvura kunze kwegomba uye kumanikidzwa kwepamusoro kwemadziro zviri muchikamu nekumanikidzwa kwemhepo kunoramba kuchigadzirwa mugomba uye zvinochengetedza kuenzana kwakasimba. Mwenje wechiedza unoramba uchipinda mugomba diki, uye zvinhu zviri kunze kwegomba diki zvinoramba zvichiyerera. Mwenje wechiedza paunofamba, buri diki rinogara riri mumamiriro akagadzikana ekuyerera.

Kureva kuti, gomba diki nesimbi yakanyungudutswa yakakomberedza rusvingo rwegomba zvinofamba nekumhanya kwemberi kwedanda remuchina. Simbi yakanyungudutswa inozadza mukaha unosara mushure mekunge gomba diki rabviswa uye rinoungana zvinoenderana, uye weld inoumbwa. Zvese izvi zvinoitika nekukurumidza zvekuti kumhanya kwewelding kunogona kusvika mamita akati wandei paminiti.

Mushure mekunzwisisa pfungwa huru dzekuwanda kwesimba, kusanganisa thermal conductivity, uye kusanganisa deep penetration, tichaita ongororo yekuenzanisa kwesimba resimba uye metallographic phases ye core diameters dzakasiyana.

Kuenzanisa kwekuyedza kwewelding zvichibva padhayamita dzakajairika dze laser core dziri pamusika:

Simba renzvimbo yepakati pema lasers ane dhayamita dzakasiyana dzepakati

Kubva pamaonero ehuwandu hwesimba, pasi pesimba rimwe chete, dhayamita yepakati diki, kupenya kwelaser kwakakwira uye simba rakawanda. Kana laser ikaenzaniswa nebanga rakapinza, dhayamita yepakati diki, laser inopinzawo. Huwandu hwesimba relaser yepakati pe14um hwakapetwa ka50 kupfuura hwe100um core diameter laser, uye kugona kwayo kugadzirisa kwakasimba. Panguva imwe chete, huwandu hwesimba hwakaverengerwa pano ingori huwandu hweavhareji. Kugoverwa kwesimba chaiko iGaussian distribution inenge yakaenzana, uye simba repakati richave rakapetwa kanoverengeka kupfuura huwandu hwesimba repakati.

Dhirowamu yechirongwa chekugoverwa kwesimba relaser ine dhayamita dzakasiyana dzepakati

Ruvara rwedhayagiramu yekugovera simba ndiro kugoverwa kwesimba. Kana ruvara rwacho rukaita ruvara rutsvuku, simba racho rinokwira. Simba dzvuku ndiro nzvimbo iyo simba racho rinoiswa. Kuburikidza nekugoverwa kwesimba relaser remarara emarara ane dhayamita dzakasiyana dzepakati, zvinoonekwa kuti kumberi kwelaser beam hakuna kupinza uye dayara relaser rakapinza. Kana simba racho rikanyanya kupinza, simba racho rinoiswa panzvimbo imwe chete, rinopinza uye simba rayo rinopinda.

Kuenzanisa kwemhedzisiro yekuwelding yema lasers ane dhayamita dzakasiyana dzepakati

Kuenzanisa kwema lasers ane madhayamita akasiyana epakati:

(1) Kuedza uku kunoshandisa kumhanya kwe150mm/s, kusanganisa nzvimbo yekuisa zvinhu, uye zvinhu zvacho zvine aluminium imwe chete, ukobvu hwe2mm;

(2) Kana dhayamita yepakati yakakura, hupamhi hwekunyunguduka hunowedzera, nzvimbo inokanganiswa nekupisa inokura, uye simba reyuniti rinoderera. Kana dhayamita yepakati ichidarika 200um, hazvisi nyore kuwana kudzika kwekupinda pamagetsi ane simba rakawanda akadai sealuminium nemhangura, uye welding yepamusoro yekupinda mudenga inogona kuwanikwa chete nesimba rakawanda;

(3) Malaser madiki ane simba rakawanda uye anogona kubaya makiyi maburi nekukurumidza pamusoro pezvinhu zvine simba rakawanda uye nzvimbo diki dzinokanganiswa nekupisa. Zvisinei, panguva imwe chete, pamusoro peweld pane rough, uye mukana wekudonha kwekiyi hole wakakwira panguva yewelding ine low-speed, uye keyhole inovharwa panguva yewelding cycle. Kutenderera kwacho kwakareba, uye zvikanganiso zvakaita sekukanganisa nema pores zvinowanzoitika. Yakakodzera kugadzirwa nekukurumidza kana kugadziriswa ne swing trajectory;

(4) Malaser makuru ane dhayamita yakakura ane madonhwe echiedza akakura uye simba rakapararira, zvichiita kuti anyatsokodzera kunyungudutsa pamusoro pelaser, cladding, annealing nedzimwe nzira.