Laser kujowina luso, kapena laser kuwotcherera luso, amagwiritsa mkulu mphamvu laser mtengo kuganizira ndi kuwongolera kuwala kwa zinthu pamwamba, ndi zinthu pamwamba zimatenga mphamvu laser ndi kuwasandutsa mphamvu kutentha, kuchititsa zinthu m'deralo kutentha ndi kusungunuka. , kutsatiridwa ndi kuziziritsa ndi kulimbitsa kukwaniritsa kujowina kwa zinthu homogeneous kapena zosiyana. Kuwotcherera kwa laser kumafuna mphamvu ya laser ya 104ku 108W/cm2. Poyerekeza ndi njira zowotcherera zachikhalidwe, kuwotcherera kwa laser kuli ndi zotsatirazi.
Laser kujowina luso, kapena laser kuwotcherera luso, amagwiritsa mkulu mphamvu laser mtengo kuganizira ndi kuwongolera kuwala kwa zinthu pamwamba, ndi zinthu pamwamba zimatenga mphamvu laser ndi kuwasandutsa mphamvu kutentha, kuchititsa zinthu m'deralo kutentha ndi kusungunuka. , kutsatiridwa ndi kuziziritsa ndi kulimbitsa kukwaniritsa kujowina kwa zinthu homogeneous kapena zosiyana. Kuwotcherera kwa laser kumafuna mphamvu ya laser ya 104ku 108W/cm2. Poyerekeza ndi njira zowotcherera zachikhalidwe, kuwotcherera kwa laser kuli ndi zotsatirazi.
1-plasma mtambo, 2-kusungunuka zinthu, 3-keyhole, 4-kuya kwa kuphatikizika
Chifukwa cha kukhalapo kwa keyhole, mtengo wa laser, utatha kuyatsa mkati mwa bowo la keyhole, udzawonjezera kuyamwa kwa laser ndi zinthu ndikulimbikitsa mapangidwe a dziwe losungunuka pambuyo pobalaza ndi zotsatira zina, njira ziwiri zowotcherera zimafaniziridwa. motere.
Chithunzi pamwambapa chimapereka njira yowotcherera ya laser ya zinthu zomwezo ndi gwero lowala lomwelo, njira yosinthira mphamvu imangochitika kudzera pabowo la keyhole, chitsulo chosungunula pafupi ndi khoma la dzenje ndikupita patsogolo kwa mtengo wa laser, chitsulo chosungunuka chimasuntha bowo la makiyi kutali ndi mpweya wosiyidwa kuti mudzaze ndipo pambuyo pa condensation, kupanga msoko wowotcherera.
Ngati zinthu kuti welded ndi dissimilar zitsulo, kukhalapo kwa kusiyana katundu matenthedwe adzakhala ndi mphamvu kwambiri pa kuwotcherera ndondomeko, monga kusiyana kwa mfundo kusungunuka, madutsidwe matenthedwe, mphamvu kutentha enieni, ndi coefficients kukula kwa zipangizo zosiyanasiyana, chifukwa. mu kuwotcherera kupsinjika, kuwotcherera mapindikidwe, ndi kusintha kwa crystallization mikhalidwe ya welded olowa zitsulo, kuchititsa kuchepa kwa mawotchi katundu wa weld.
Chifukwa chake, molingana ndi mawonekedwe osiyanasiyana azowotcherera, njira yowotcherera yapanga kuwotcherera kwa laser filler, brazing laser, welding wapawiri-mtengo laser, kuwotcherera kwa laser kompositi, ndi zina zambiri.
Kuwotchera kwa Laser Wire Filling
Mu laser kuwotcherera ndondomeko aluminiyamu, titaniyamu ndi kaloti zamkuwa, chifukwa otsika mayamwidwe laser kuwala (<10%) mu zipangizo izi, chithunzi kwaiye plasma ali ndi chitetezo china cha kuwala kwa laser, kotero n'zosavuta kupanga sipopera ndi. kumayambitsa kubadwa kwa zolakwika monga porosity ndi ming'alu. Komanso, kuwotcherera khalidwe amakhudzidwanso pamene kusiyana pakati workpieces ndi lalikulu kuposa malo awiri pa woonda mbale sputtering.
Pothetsa mavuto omwe ali pamwambawa, zotsatira zabwino zowotcherera zitha kupezeka pogwiritsa ntchito njira yopangira zinthu zodzaza. Chojambuliracho chikhoza kukhala waya kapena ufa, kapena njira yokhazikitsidwa kale ingagwiritsidwe ntchito. Chifukwa cha malo ang'onoang'ono omwe amayang'ana, weld amakhala wocheperako ndipo amakhala ndi mawonekedwe otukuka pang'ono pamtunda pambuyo poti chodzaza chimayikidwa.
Kuwotcha kwa laser
Mosiyana ndi kuwotcherera kwa fusion, komwe kumasungunula mbali ziwiri zowotcherera nthawi imodzi, brazing imawonjezera zinthu zodzaza ndi malo otsika osungunuka kuposa zinthu zoyambira pamwamba pa weld, zimasungunula zinthu zodzaza kuti zithe kudzaza mpatawo kutentha pang'ono kuposa kusungunuka kwa zinthu zoyambira. mfundo ndi yokwera kuposa malo osungunuka a zinthu zodzaza, kenako imakhazikika kuti ipange weld yolimba.
Brazing ndi yoyenera pazida zamagetsi zamagetsi zomwe sizimva kutentha, mbale zoonda, ndi zida zachitsulo zosakhazikika.
Kuonjezera apo, ikhoza kutchulidwanso ngati kutsekemera kofewa (<450 ° C) ndi kutsekemera kolimba (> 450 ° C) kutengera kutentha komwe kumatenthedwa.
Kuwotcherera kwa Dual Beam Laser
Kuwotcherera kwapawiri-mtengo kumalola kusinthasintha komanso kosavuta kuwongolera nthawi ndi malo a laser, motero kusintha kugawa mphamvu.
Amagwiritsidwa ntchito kwambiri pakuwotcherera kwa laser kwa aluminiyamu ndi ma magnesium alloys, splice ndi lap plate kuwotcherera pamagalimoto, kuwotcherera kwa laser ndi kuwotcherera kwakuya.
Mtengo wapawiri ukhoza kupezedwa ndi ma lasers awiri odziyimira pawokha kapena kupatukana kwa mtengo ndi chogawa chamtengo.
Miyendo iwiriyi ikhoza kukhala yophatikizira ma lasers okhala ndi mawonekedwe amtundu wosiyanasiyana wanthawi (pulsed vs. mosalekeza), mafunde osiyanasiyana (pakati pa infrared vs.
4.Laser Composite kuwotcherera
Chifukwa cha ntchito laser mtengo monga gwero lokha kutentha, limodzi kutentha gwero laser kuwotcherera ali otsika mlingo kutembenuka mphamvu ndi mlingo magwiritsidwe, ndi weld m'munsi zinthu doko mawonekedwe n'zosavuta kutulutsa misalignment, zosavuta kutulutsa pores ndi ming'alu ndi zofooka zina, kuti athetse vutoli, mungagwiritse ntchito Kutentha makhalidwe magwero ena kutentha kusintha Kutentha kwa laser pa workpiece, kawirikawiri amatchedwa laser gulu kuwotcherera.
Mtundu waukulu wa kuwotcherera gulu laser ndi kuwotcherera gulu la laser ndi arc magetsi, 1 + 1> 2 zotsatira ndi motere.
pambuyo pa mtengo wa laser pafupi ndi arc yogwiritsidwa ntchito,kachulukidwe ma elekitironi amachepa kwambiri, mtambo wa plasma wopangidwa ndi kuwotcherera kwa laser umachepetsedwa, zomweimatha kupangitsa kuti mayamwidwe a laser azikhala bwino, pamene arc pa preheating m'munsi zinthu kuonjezera mayamwidwe mlingo wa laser.
2. Kugwiritsa ntchito mphamvu kwapamwamba kwa arc ndi chiwerengero chonsekugwiritsa ntchito mphamvu kudzawonjezeka.
3, gawo la kuwotcherera kwa laser ndi laling'ono, losavuta kupangitsa kuti doko lowotcherera lisokonezeke, pomwe matenthedwe a arc ndi akulu, omwe amathakuchepetsa kusalongosoka kwa doko lowotcherera. Pa nthawi yomweyo, aKuwotcherera kwabwino komanso kugwira ntchito bwino kwa arc kumakhala bwinochifukwa cha kuyang'ana ndi kutsogolera kwa laser mtengo pa arc.
4, kuwotcherera kwa laser ndi kutentha kwapamwamba kwambiri, malo akulu omwe amakhudzidwa ndi kutentha, kuzizira mwachangu komanso kuthamanga kwamphamvu, kosavuta kupanga ming'alu ndi pores; pomwe malo okhudzidwa ndi kutentha kwa arc ndi ochepa, omwe amatha kuchepetsa kutentha, kuzizira, kuthamanga kwamphamvu,akhoza kuchepetsa ndi kuthetsa m'badwo wa pores ndi ming'alu.
Pali mitundu iwiri yodziwika bwino ya kuwotcherera kophatikiza kwa laser-arc: kuwotcherera kophatikiza kwa laser-TIG (monga tawonetsera pansipa) ndi kuwotcherera kophatikiza kwa laser-MIG.
Palinso njira zina zowotcherera monga laser ndi plasma arc, laser ndi inductive heat source kuwotcherera.
Za MavenLaser
Maven Laser ndiye mtsogoleri wamakampani opanga ma laser ku China komanso wovomerezeka wopereka mayankho padziko lonse lapansi a laser processing. Timamvetsetsa mozama za chitukuko chamakampani opanga zinthu, nthawi zonse kulemeretsa katundu wathu ndi mayankho, kuumirira kuyang'ana kuphatikizika kwa zokha, informationization ndi luntha ndi makampani opanga, kupereka zida zowotcherera laser, zida zolembera laser, zida zoyeretsera laser ndi zodzikongoletsera zagolide ndi siliva. zida kudula m'mafakitale osiyanasiyana kuphatikizapo zonse mphamvu mndandanda, ndi mosalekeza kukulitsa chikoka m'munda wa zida laser.
Nthawi yotumiza: Jan-13-2023
