Kev Txhais Lus ntawm Qhov Tsis Zoo ntawm Cov Hlau Uas Splash: Cov hlau uas splash hauv kev vuam yog hais txog cov hlau uas yaj tawm ntawm lub pas dej uas yaj thaum lub sijhawm vuam. Cov hlau no yuav poob rau ntawm qhov chaw ua haujlwm ib puag ncig, ua rau muaj qhov ntxhib thiab tsis sib npaug ntawm qhov chaw, thiab kuj tseem yuav ua rau lub pas dej uas yaj poob zoo, ua rau muaj qhov tawg, qhov tawg, thiab lwm yam tsis zoo ntawm qhov chaw vuam uas cuam tshuam rau cov khoom siv kho tshuab ntawm qhov vuam.
Kev sib txhuam hauv kev vuam yog hais txog cov hlau uas yaj tawm ntawm lub pas dej uas yaj thaum lub sijhawm vuam. Cov dej no yuav poob rau ntawm qhov chaw ua haujlwm ib puag ncig, ua rau muaj qhov ntxhib thiab tsis sib npaug ntawm qhov chaw, thiab kuj tseem yuav ua rau lub pas dej yaj poob zoo, ua rau muaj qhov tawg, tawg, thiab lwm yam tsis zoo ntawm qhov chaw vuam uas cuam tshuam rau cov khoom siv kho tshuab ntawm qhov vuam.
Kev faib tawm ntawm cov dej ntws:
Cov dej me me: Cov dej khov kho muaj nyob rau ntawm ntug ntawm cov vuam sib txuas thiab ntawm qhov chaw ntawm cov khoom siv, feem ntau cuam tshuam rau qhov tsos thiab tsis muaj kev cuam tshuam rau kev ua tau zoo; Feem ntau, ciam teb rau qhov sib txawv yog tias cov dej tsawg dua 20% ntawm qhov dav ntawm cov vuam sib txuas;
Muaj tej qhov tawg loj: Muaj qhov poob zoo, uas qhia tau tias yog qhov nkhaus, qhov tawg, qhov tsis sib xws, thiab lwm yam ntawm qhov chaw vuam, uas tuaj yeem ua rau muaj kev ntxhov siab thiab kev nyuaj siab tsis sib xws, cuam tshuam rau kev ua haujlwm ntawm qhov chaw vuam. Lub hom phiaj tseem ceeb yog nyob rau cov teeb meem no.
Cov txheej txheem tshwm sim ntawm kev tawg:
Kev txaws yog qhov pom tseeb tias yog cov hlau uas yaj tau txhaj rau hauv lub pas dej uas yaj tau hauv qhov kev taw qhia uas ze li ntawm perpendicular rau qhov chaw ntawm cov kua vuam vim yog kev nrawm siab. Qhov no tuaj yeem pom tseeb hauv daim duab hauv qab no, qhov twg cov kua dej nce los ntawm cov kua vuam thiab lwj mus ua cov tee dej, tsim cov dej txaws.
Qhov xwm txheej ntawm kev tawg dej
Laser vuam yog muab faib ua thermal conductivity thiab tob penetration vuam.
Kev vuam uas muaj thermal conductivity yuav luag tsis muaj qhov tshwm sim ntawm spatter: Kev vuam uas muaj thermal conductivity feem ntau cuam tshuam nrog kev hloov pauv cua sov los ntawm qhov chaw ntawm cov khoom mus rau sab hauv, yuav luag tsis muaj spatter tsim thaum lub sijhawm ua haujlwm. Cov txheej txheem tsis cuam tshuam nrog kev ua pa hnyav ntawm cov hlau lossis cov tshuaj tiv thaiv lub cev.
Kev vuam tob tob yog qhov xwm txheej tseem ceeb uas muaj kev sib txhuam: Kev vuam tob tob suav nrog laser ncav cuag ncaj qha rau hauv cov khoom, hloov cua sov mus rau cov khoom siv los ntawm cov qhov tseem ceeb, thiab cov txheej txheem teb yog qhov hnyav, ua rau nws yog qhov xwm txheej tseem ceeb uas muaj kev sib txhuam tshwm sim.
Raws li pom hauv daim duab saum toj no, qee cov kws tshawb fawb siv cov duab ceev ceev ua ke nrog cov iav pob tshab kub siab los saib xyuas qhov xwm txheej txav ntawm lub qhov tseem ceeb thaum lub sijhawm vuam laser. Nws tuaj yeem pom tias lub laser feem ntau ntaus rau ntawm phab ntsa pem hauv ntej ntawm lub qhov tseem ceeb, thawb cov kua kom ntws mus rau hauv qab, hla lub qhov tseem ceeb thiab mus txog tus Tsov tus tw ntawm lub pas dej ua kua. Qhov chaw uas lub laser tau txais hauv lub qhov tseem ceeb tsis ruaj khov, thiab lub laser nyob rau hauv lub xeev nqus Fresnel hauv lub qhov tseem ceeb. Qhov tseeb, nws yog lub xeev ntawm ntau qhov kev cuam tshuam thiab kev nqus, tswj hwm qhov muaj nyob ntawm cov kua dej ua kua. Qhov chaw ntawm lub laser refraction thaum txhua txoj kev hloov pauv nrog lub kaum sab xis ntawm phab ntsa qhov tseem ceeb, ua rau lub qhov tseem ceeb nyob rau hauv lub xeev txav mus los. Qhov chaw irradiation laser yaj, ua pa, raug rau lub zog, thiab deforms, yog li qhov kev co peristaltic txav mus tom ntej.
Qhov kev sib piv uas tau hais los saum toj no siv cov iav pob tshab kub siab, uas yog qhov tseeb sib npaug rau qhov pom ntawm lub pas dej ua kua. Tom qab tag nrho, qhov xwm txheej ntws ntawm lub pas dej ua kua txawv ntawm qhov xwm txheej tiag tiag. Yog li ntawd, qee tus kws tshawb fawb tau siv cov thev naus laus zis khov sai. Thaum lub sijhawm vuam, lub pas dej ua kua tau khov sai sai kom tau txais lub xeev tam sim ntawd hauv lub qhov tseem ceeb. Nws tuaj yeem pom tseeb tias lub laser tab tom ntaus phab ntsa pem hauv ntej ntawm lub qhov tseem ceeb, tsim ib kauj ruam. Lub laser ua haujlwm ntawm qhov kauj ruam no, thawb lub pas dej ua kua kom ntws mus rau hauv qab, sau qhov sib txawv ntawm lub qhov tseem ceeb thaum lub laser txav mus tom ntej, thiab yog li tau txais daim duab qhia kev ntws kwv yees ntawm qhov ntws hauv lub qhov tseem ceeb ntawm lub pas dej ua kua tiag tiag. Raws li pom hauv daim duab sab xis, lub siab rov qab hlau tsim los ntawm laser ablation ntawm cov hlau kua tsav lub pas dej ua kua kom hla dhau phab ntsa pem hauv ntej. Lub qhov tseem ceeb txav mus rau tus Tsov tus tw ntawm lub pas dej ua kua, nce mus rau saum toj zoo li lub qhov dej los ntawm sab nraub qaum thiab cuam tshuam rau qhov chaw ntawm lub pas dej ua kua tus Tsov tus tw. Tib lub sijhawm ntawd, vim yog qhov nro ntawm qhov chaw (qhov kub ntawm qhov nro ntawm qhov chaw qis dua, qhov cuam tshuam ntau dua), cov hlau ua kua hauv lub pas dej ua kua tom qab raug rub los ntawm qhov nro ntawm qhov chaw kom txav mus rau ntug ntawm lub pas dej ua kua, thiab khov tas li. Cov hlau ua kua uas tuaj yeem khov tau yav tom ntej yuav rov qab mus rau tom qab ntawm lub qhov tseem ceeb, thiab lwm yam.
Daim duab kos ntawm laser keyhole tob tob vuam: A: Kev taw qhia vuam; B: Laser beam; C: Keyhole; D: Hlau pa, plasma; E: Cov pa tiv thaiv; F: Keyhole pem hauv ntej phab ntsa (ua ntej yaj sib tsoo); G: Kab rov tav ntws ntawm cov khoom siv molten los ntawm txoj kev keyhole; H: Melt pas dej khov interface; I: Txoj kev ntws mus rau hauv qab ntawm lub pas dej molten.
Cov txheej txheem sib cuam tshuam ntawm laser thiab cov khoom siv: Lub laser ua haujlwm rau ntawm qhov chaw ntawm cov khoom siv, tsim cov ablation hnyav. Cov khoom siv ua ntej raug cua sov, yaj, thiab evaporated. Thaum lub sijhawm ua evaporation hnyav, cov pa hlau txav mus rau sab saud kom muab lub pas dej molten lub zog rov qab mus rau hauv qab, ua rau lub qhov tseem ceeb. Lub laser nkag mus rau hauv lub qhov tseem ceeb thiab dhau ntau cov txheej txheem tso tawm thiab nqus, ua rau muaj cov pa hlau txuas ntxiv tswj lub qhov tseem ceeb; Lub laser feem ntau ua haujlwm rau ntawm phab ntsa pem hauv ntej ntawm lub qhov tseem ceeb, thiab evaporation feem ntau tshwm sim rau ntawm phab ntsa pem hauv ntej ntawm lub qhov tseem ceeb. Lub zog rov qab thawb cov hlau kua los ntawm phab ntsa pem hauv ntej ntawm lub qhov tseem ceeb kom txav mus ncig lub qhov tseem ceeb mus rau tus Tsov tus tw ntawm lub pas dej molten. Cov kua txav ntawm qhov ceev ceev ncig lub qhov tseem ceeb yuav cuam tshuam rau lub pas dej molten mus rau sab saud, tsim cov nthwv dej siab. Tom qab ntawd, tsav los ntawm kev nruj ntawm qhov chaw, nws txav mus rau ntug thiab khov kho hauv lub voj voog zoo li no. Splash feem ntau tshwm sim ntawm ntug ntawm qhov qhib qhov tseem ceeb, thiab cov hlau kua ntawm phab ntsa pem hauv ntej yuav hla lub qhov tseem ceeb thiab cuam tshuam rau qhov chaw ntawm phab ntsa tom qab lub pas dej molten.
Lub sijhawm tshaj tawm: Lub Peb Hlis-29-2024
