Laser welding yog txheej txheem uas siv lub zog ci ntawm lub laser kom ua tiav kev ua haujlwm vuam. Lub hauv paus ntsiab lus ua haujlwm yog ua kom zoo siab rau laser lub nruab nrab (xws li cov roj sib xyaw ntawm CO2 thiab lwm yam roj cua, YAG yttrium aluminium garnet siv lead ua, thiab lwm yam) nyob rau hauv ib yam tshwj xeeb. Lub reciprocating oscillation nyob rau hauv cov kab noj hniav tas ib tsa tawg beam. Thaum lub nqaj tau nyob nrog qhov chaw ua haujlwm, nws lub zog yog nqus los ntawm qhov chaw ua haujlwm, thiab lub vuam tuaj yeem ua tiav thaum qhov kub mus txog qhov chaw yaj ntawm cov khoom.
Laser vuam tuaj yeem muab faib ua cov tshav kub conduction vuam thiab sib sib zog nqus fusion vuam. Lub tshav kub ntawm lub qub yog diffused rau hauv lub workpiece los ntawm tshav kub hloov lwm lub tsev, thiab tsuas yog lub nto ntawm lub weld yog melted. Sab hauv ntawm qhov chaw ua haujlwm tawm tsis yog tag nrho, thiab qhov tsis muaj lub vaporization tshwm sim, thiab nws feem ntau yog siv rau kev nrawm ua kom tsis muaj nyias lub ntsa. Lub vuam ntawm cov khoom siv; tom kawg tsis tsuas yog nkag kiag ntawm cov khoom siv, tab sis kuj vaporizes cov khoom kom tsim nqi ntau ntawm cov ntshav. Vim tias qhov cua sov loj, qhov teeb meem tseem ceeb tshwm sim nyob rau ntawm sab xub ntiag kawg ntawm lub pas dej molten. Sib sib zog nqus fuam fuam vuam tuaj yeem nkag mus ua haujlwm ntawm qhov chaw ua haujlwm, thiab muaj lub zog ua kom muaj zog thiab vuam ceev nrawm. Nws yog feem ntau siv cov laser vuam hom.
Qhov zoo ntawm laser vuam
1 Laser vuam peev xwm ua tau siab zoo ob leeg lub dag lub zog thiab loj nam ratio, thiab cov Vuam ceev ceev.
2 Vim laser vuam tsis tau ib lub tshuab nqus tsev ib puag ncig, tej thaj chaw deb tswj thiab caw kaw lus ntau lawm yuav ua tau tiav los ntawm lo ntsiab muag thiab kho qhov muag fibers.
3 Laser muaj lub zog loj ntom ntom, cov vuam zoo ua rau cov khoom siv tsis yooj yim xws li titanium thiab quartz, thiab tuaj yeem txuas cov ntaub ntawv sib txawv.
4 Cov tshuab luam ntawv me me yog tau. Lub ntsej muag laser tau tsom kom tau txais qhov chaw me me, thiab tuaj yeem kho qhov chaw kom raug, thiab tuaj yeem thov rau qhov chaw loj ntawm kev ua haujlwm ntawm cov ntawv me me thiab cov haujlwm me me uas ua haujlwm tau los ntawm cov khoom loj.
Tsis zoo ntawm cov laser vuam
1 Lub vev xaib laser thiab vuam vias tseem kim dua, yog li kev pib ua haujlwm thiab cov nqi saib xyuas tau ntau dua li cov txheej txheem vuam tsoos, thiab cov txiaj ntsig kev lag luam tsis zoo.
2 Qhov kev hloov pauv ntawm kev siv lub tshuab hluav taws xob laser feem ntau tsis tshua muaj (feem ntau 5% txog 30%) vim tias qhov nqus qis ntawm lub laser los ntawm cov ntaub ntawv khoom, tshwj xeeb yog tom qab cov ntshav muaj (cov ntshav muaj cov nyhuv nqus ntawm lub laser).
3 Vim tias qhov chaw me me ntawm qhov laser vuam, qhov tseeb ntawm cov cuab yeej siv rau kev sib tsoo workpiece muaj siab, thiab cov khoom siv me me sib txawv yuav ua rau muaj kev ua yuam kev loj.