Cov xwm txheej uas cuam tshuam rau qhov zoo ntawm laser vuam yog: lub hnub qub lub zog ntawm laser mem tes, lub cheeb ntawm laser Eastern chaw, qhov tsawg zaus ntawm laser mem tes, cov mem tes dav ntawm laser, cov mem tes waveform ntawm laser, qhov txheeb ze lub teeb nqus ntawm cov khoom siv los ua welded, vuam vuam nrawm, thaiv roj, thiab lwm yam.
Lub zog ntawm laser pulse: hais txog qhov siab tshaj plaws tso zis hluav taws xob ntawm ib tus laser laser mem tes, chav tsev: J (joule). Qhov no yog qhov ntsuas tshwj xeeb ntawm lub laser, uas txiav txim siab lub zog siab tshaj plaws uas cov laser tuaj yeem tsim. Raws li lub hom phiaj kho pwm, lub zog laser hauv qab 70 j tuaj yeem ua kom tau raws li qhov xav tau ntawm txhua lub sijhawm, txawm hais tias lub zog siv ntau npaum li cas, lossis tsis txhua. Ntxiv mus, qhov ntim ntawm cov fais fab laser thiab cov ntim hluav taws xob tau nce siab, uas txo qhov kev siv ntawm cov khoom siv fais fab.
Kev tsom xam txoj kab uas hla ntawm laser chaw: Qhov no yog qhov tseem ceeb tshaj plaws hais txog qhov kev tsim qauv ua haujlwm ntawm laser, chav tsev yog (hli), uas txiav txim siab lub zog ceev thiab kev ua ntau yam ntawm laser. Yog tias lub laser' s kho qhov muag tsim yog qhov tsim nyog thiab nce qib, lub hnub qub zog laser zog thiab ua kom pom tseeb yog qhov tseeb, qhov chaw laser lub cheeb muaj peev xwm tswj tau nyob hauv thaj tsam 0. {{{{6} }}} hli - {{2}} hli, thiab seb laser tsom xam txoj kab uas hla tuaj yeem tswj tsis pub dhau 0 {{2}} mm yog qhov ntsuas nruj rau lub tshuab hluav taws xob laser. Feem ntau tsim cov lasers hauv Suav teb tsuas yog xav txo tus nqi. Yog li ntawd, kev ua cov khoom siv laser tau yooj yim, kev tsim qauv tsis yog qhov nruj, qhov laser divergence nyob rau hauv cov kab noj hniav yog qhov hnyav, uas ua rau nws nyuaj ua kom pom tseeb meej. Lub ntsej muag laser qhov ntev ntawm lub laser tso tawm tsuas yog tsis ncav lub nominal 0. {{2}} hli, tab sis tsuas tuaj yeem ncav cuag qhov tsawg kawg nkaus ntawm 05 hli, Vim qhov sib txawv ntawm laser, cov khoom tawm lub pas nrig laser tsis tuaj yeem nyob rau hauv lub voj voog tsis tu ncua, uas ua rau qhov tshwm sim uas qhov tseeb laser irradiation thaj tsam yog qhov loj heev thiab lub weld seam yog ablated. Ntawd yog hais, qhov tsis tsim nyog laser irradiation ntawm ob hnub ntawm qhov txuas weld ua rau ob hnub kawg ntawm lub qhov rooj ntsaws weld pom concave. Qhov tshwm sim no muaj qhov tshwj xeeb uas tsis zoo rau kev kho ntawm cov pwm polished, thiab qee zaus txawm tias ua rau pwm tawg. Tongpu' s laser tau tsim tau zoo, nrog cov khoom siv nruj me ntsis thiab saib xyuas kom deb deb, kom nws lub teeb tso zis pom lub teeb pom lub qhov ntev tuaj yeem ua tib zoo saib xyuas, kom qhov tsawg kawg ntawm qhov chaw tsom teeb tuaj yeem mus txog 0. { {2}} hli, thiab tuaj yeem tsim kho qhov cub tsis pub dhau li ntawm 0 {{2} hli thiab {{2}, hli, mus txog qib siab thoob ntiaj teb.
Kev nquag ntawm laser mem tes: Qhov no yog lub peev xwm los cuam tshuam ntau npaum li cas pulses lub laser tuaj yeem tawm hauv ob. Chav tsev yog (Hz). Ua ntej tshaj plaws, nws yuav tsum tau piav qhia tias lub vuam hlau siv lub zog ntawm lub teeb. Thaum lub laser fais fab tuag tas li, qhov ntau dua qhov ntau yog, qhov hluav taws xob tso zis tsawg dua ntawm txhua lub laser. Yog li no, peb yuav tsum xav txog kev ua cov txheej txheem los txiav txim siab qhov tso zis zaus ntawm laser thaum lub zog laser txaus rau cov hlau yaj. Cov teeb meem ntawm laser kho lub abrasives, 15 Hz tau ua tau raws li qhov xav tau ntawm vuam, loj dhau heev yog khi ua rau lub laser mem tes lub zog lub hnub qub tsawg dhau, uas ua rau vuam tsis ua haujlwm.
Mem tes waveform ntawm laser: rau kev ua vuam nrog cov mem tes laser, laser mem tes waveform yog qhov teeb meem tseem ceeb hauv kev siv mem tes laser vuam. Thaum lub teeb meem laser siab heev nyob rau saum npoo ntawm cov khoom siv, 60% - 98% ntawm lub hnub qub zog laser yuav muaj kev cuam tshuam tawm ntawm cov hlau, thiab lub phaj emissivity yuav hloov nrog qhov kub. Yog li no, cov hlau sib txawv nyias muaj nyias cov duab laser thiab laser siv. Txhawm rau nqa tawm cov vuam siv tau zoo, nws yog qhov tsim nyog los tawm tswv yim sib txawv ntawm laser, kom cov qauv hlau ntawm lub hlau txuas tuaj yeem quaj tau zoo tshaj plaws, tsim cov qauv qub nrog lub hauv paus hlau, thiab ua lub siab zoo weld. Feem ntau, kev siv tshuab hauv tsev siv pheej yig ib nthwv dej laser fais fab mov, yog li lub vuam hloov qis, nws yog qhov nyuaj rau yoog rau vuam ntawm ntau yam khoom siv pwm, thiab feem ntau yuav tsum tau ua haujlwm dua tshiab, uas nkim lub sijhawm ntawm vuam cov ntaub ntawv, thiab yuav ua rau tuag seem. Cov khoom siv hlau sib txawv muaj qhov sib txawv thiab kev nqus ntawm laser, tab sis tib lub nqaj hlau tuaj yeem tsim cov hlau sib txawv ntawm cov hlau sib txawv, thiab muaj kev cuam tshuam rau lawv kev nkag mus, vuam ceev, crystallization ceev thiab hardness, yog li ntawd tib lub voos vuam vuam tsis tuaj yeem daws qhov yuav tsum tau ua ntawm txawv cov pwm hlau vuam. Tongpu TPM ntse laser pwm kho tshuab vuam siv lub tshuab tsim tshwj xeeb vuam hluav taws xob hauv Suav teb kom ua tiav qhov siab qhov siab ntawm cov tshuab laser welding. Nws tuaj yeem hloov kho qhov yoj raws li cov ntawv thov sib txawv, kom cov qauv hlau ntawm cov hlau txuas zoo ib yam nrog lub hauv paus hlau. Tom qab vuam ntawm lub pwm lossis hlau qhov chaw, qhov nyuaj ntawm lub weld ncav hrc50-hrc 58, uas ua tiav qhov tseeb tsis xeb vuam thiab ua kom zoo dua qhov ua tau zoo ntawm kev kho vuam.
