Lub ntsej muag kho qhov muag laser ua rau cov haujlwm tawm ntau dua-tiv taus. Laser quenching, melting thiab txheej ua rau cov haujlwm hnyav ntxiv rau kom thauj khoom: muaj lub zog tawv thiab tawv, kho cov ntaub ntawv saum npoo, siab txhim kho rau saum npoo lossis txheej tiv thaiv. Laser npav thiab laser micromachining tuaj yeem hloov qhov chaw ntawm chaw haujlwm.
[ua haujlwm tua hluav taws]
Hauv paus ntsiab lus ntawm laser quenching: Lub laser beam heats tus nto txheej ntawm cov hlau thiab sai cools nws yuav ua tau kom nws cov hardness. Qhov kom zoo dua ntawm laser quenching technology yog hais tias nws yuav tsum tau heev me ntsis tom ntej ua thiab muaj peev xwm ua lus peb-dimensional workpieces. Vim tias qhov me me ntawm kev nkag ntawm tshav kub, qhov kev hloov kho ntawm lub chaw ua haujlwm me me, txo qis lossis tseem tshem tawm qhov kev xav tau ntawm kev ua haujlwm tom qab.
Laser quenching yog txheej txheej saum npoo av txheej txheem txheej txheem. Tsuas siv tau rau ntawm cov ntaub ntawv siv hlau uas tuaj yeem siv tawv. Ntawd yog, steel thiab cam khwb cia hlau nrog cov ntsiab lus carbon ntau dua 0.2%.
Nyob rau hauv thiaj li yuav harden lub workpiece, lub laser beam nyob rau hauv feem ntau heats cov hlau nto txheej mus ze lub melting point, piv txwv li, hais txog 900 rau 1400 ° C. Thaum cov nplaim mus txog qhov ntsuas kub uas xav tau, lub nqaj laser tawm ntawm txoj haujlwm no thiab txuas ntxiv mus ua ntej, txuas ntxiv ua kom sov cov nplaim hluav taws xob ua haujlwm nyob rau hauv cov kev taw qhia tshiab. Hauv qab qhov kev txiav txim siab ntawm qhov kub thiab txias, cov pa roj carbon atoms hauv cov hlau txuas nws hloov lawv txoj haujlwm (austenization). Thaum cov laser beam yoojyim ib qhov chaw, cov ntaub ntawv uas nyob ib ncig ntawm qhov chaw cools cov kub nto txheej heev sai sai. Qhov tshwm sim no hu ua" kev rov ua tus kheej." Vim tias qhov txias txias, lub lattice hlau tsis rov qab mus rau nws qhov qub, tab sis hloov chaw tsim cov tshuaj martensite. Martensite yog cov qauv hlau tawv. Kev hloov mus rau martensite tsub kom qhov nyuaj ntawm cov khoom.
Lub teeb xim laser heats txheej txheej saum npoo ntawm qhov haujlwm. Cov txheej txheem saum npoo tawv tawv ntawm qhov sib txawv li ntawm 0.1 txog 1.5 hli, thiab qee yam khoom siv nce mus txog 2.5 hli lossis siab dua. Yog hais tias qhov tob ntawm cov npoo tawv tawv yuav tsum muaj ntau dua, qhov ntim ntawm ib puag ncig yuav tsum loj dua yog li cov cua sov yuav tsum tau coj tawm sai sai yog li thaj chaw tawv yuav raug txias sai txaus. Lub laser quenching cov txheej txheem yuav tsum tau siv hluav taws xob tsawg me ntsis. Nyob rau tib lub sijhawm, cov cuab yeej tsim haujlwm yuav tsum yog tshuab ntawm tib lub dav hlau. Yog li ntawd, lub nqaj laser yuav tuaj yeem tiv thaiv tau dav hlau loj tshaj plaws. Tam sim no siv yog xwmfab illuminated nto. Ib yam li ntawd, tus PP daim iav txheej kuj yog siv nyob rau hauv lub laser quenching txheej txheem los mus ua rau lub laser beam ntawm ib tug yeej nqaij ntawd mus tsiv rov qab thiab tawm sai sai heev. Ib txoj kab ntawm tshuam niaj hnub hwj chim ceev yog tsim rau ntawm qhov chaw ntawm lub workpiece. Ib txoj kab hlau tawv tawv nrog qhov dav txog 60 hli tuaj yeem tsim tawm. Cov kabmob feem ntawm tus ncej nyob ze rau qhov turbocharger raws li qhia saum toj no lawm laser-quenched.
[laser cladding]
Txhawm rau txhawm rau txhim kho lub hnav tsis kam ntawm cov khoom siv lossis hloov kho qhov saum npoo, txheej txheem laser surfacing ua haujlwm. Nrog lub laser cladding system, nplaim ntawm qhov chaw ua haujlwm uas twb muaj lawm tuaj yeem kho nrog cov xim txheej hlau, qhov tsis zoo yog tib yam nkaus ntawm kev cuam. Tsis muaj qhov loj hauv qhov ploj, ntsaws ruaj ruaj, tsis muaj qhov ntxeem thiab tsis tawg.
Lub laser cladding system ua rau cov laser surfacing txheej txheem heev yooj yim: siv ib laser los ua ib tug molten pas dej ua ke rau ntawm qhov chaw yuav tsum tau kho. Cov hmoov tshuaj no tau txau mus rau qhov chaw los ntawm lub nozzle, thiab thaum cov khoom tshiab ua kom muaj zog, txheej tom ntej ntawm vuam raug pib, lossis kev ua tom qab txuas ntxiv yog ua.
Ib qho laser laser txheej txheem tsim muaj peb qhov tseem ceeb ua haujlwm: hmoov conveyor, kab hmoov conveyor kab, thiab txheej txheem ua iav teeb nrog lub ntsej muag hmoov. Lub hmoov conveyor yog ib chav ua noj uas txav ntawm ib sab ntawm lub tshuab ua laser. Lub hmoov roj sib tov los ntawm ob peb cov hlab ntsha yog mixed nyob rau hauv ib tug hmoov conveyor mus rau hauv ib tug hmoov kwj uas yog nkag tau rau hauv cov hmoov nozzle ntawm ib tug precisely set tus nqi ndlwg. Cov kev sib xyaw ua ke tsim kom muaj kev tiv thaiv zoo txheej txheej txhua lub sijhawm.