Piv nrog cov txheej txheem vuam ib txwm muaj,laser vuammuaj cov txiaj ntsig zoo - qis cua sov nkag, vuam ceev ceev, thaj chaw cuam tshuam cua sov me me,
Nyob rau hauv xyoo tas los no, laser vuam tau siv dav hauv kev lag luam automotive, kev lag luam shipbuilding, kev lag luam fais fab nuclear, aerospace
Kev lag luam aviation thiab lwm yam kev lag luam high-tech tau siv ntau dua thiab ntau dua, thiab nrog rau kev txo qis ntawm tus nqi ntawm cov khoom siv tiav, hauv cov khoom siv kho vajtse txhua hnub
Thiab lwm yam kev siv rau lub neej tau pib loj hlob sai. Tab sis tib lub sijhawm, kev vuam laser ib leeg kuj muaj qee qhov tsis zoo,
Tsis tuaj yeem ua tau raws li qhov xav tau ntau dua thiab ntau dua: ua ntej, ib qho laser vuam ntawm qhov sib dhos sib txuas qhov yuav tsum tau ua yog nruj heev,
Feem ntau yuav tsum muaj qhov sib txawv <0.2 hli, txwv tsis pub nws nyuaj rau ua tiav kev sib txuas zoo; Qhov thib ob,ib qho laser vuamnws rhiab heev rau cov kab nrib pleb ntawm vuam
Nws yooj yim heev ua rau muaj kev tawg ntawm cov vuam, thiab cov khoom sib xyaw ntawm cov vuam tsis tuaj yeem hloov kho kom tswj tau qhov tshwm sim ntawm cov kab nrib pleb; Qhov thib peb, ib leeg xwb
Kev vuam laser xav tau cov lasers muaj zog heev thaum vuam cov phaj tuab loj, thiab nws lub peev xwm nkag mus rau hauv lub zog ntawm lub laser
Thiab qhov zoo ntawm qhov vuam tsis tuaj yeem lav tag nrho.
Yuav kom ua tau raws li qhov xav tau ntawm kev txhim kho ntawm ntau yam lag luam, cov txheej txheem ntawm laser vuam kuj tau txhim kho, thiab kev txhim kho sib xws tau tsim, xws li tsab xov xwm no
Cov txheej txheem vuam laser thiab lwm txoj kev vuam tau piav qhia. Cov txheej txheem vuam laser yog tsim los ntawm kev vuam laser ib leeg,
Piv nrog rau ib qho laser vuam, nws muaj qhov zoo pom tseeb:
①Txo qhov yuav tsum tau sib dhos ntawm cov khoom ua haujlwm kom zoo heev, vim tias cov hlau vuam tau ntxiv rau hauv cov txheej txheem vuam, cov hlau pas dej vuam yuav nce ntxiv heev thiab tuaj yeem txuas tau.
Txuas nrog qhov sib txawv loj dua, thaum ua rau qhov vuam puv dua;
Cov khoom siv microstructure ntawm thaj chaw vuam tuaj yeem tswj tau, vim tias cov khoom sib xyaw ntawm cov hlau vuam txawv ntawm cov khoom siv hauv paus ntawm qhov sib koom ua ke vuam.
Tom qab cov hlau raug fused rau hauv lub pas dej weld, qhov zoo, cov khoom sib xyaw thiab qhov sib piv ntawm lub pas dej weld tuaj yeem hloov kho kom tswj tau cov txheej txheem solidification thiab kev tsim cov microstructure.
(3) Lub zog nkag ntawm kab yog me me, thaj chaw cuam tshuam los ntawm cua sov thiab kev hloov pauv thermal yog me me, uas yog qhov zoo heev rau kev vuam cov khoom ua haujlwm nrog cov kev cai hloov pauv nruj;
④tuaj yeem ua tiav cov laser fais fab me dua vuam cov ntaub ntawv tuab dua, vim tias cov hlau vuam tau ntxiv rau hauv cov txheej txheem vuam, ntau qhov vuam tuaj yeem ua tiav, thiab
Cov hlau pas dej vuam yuav raug nthuav dav heev, yog li ntawd qhov sib koom ua ke vuam tuaj yeem qhib kom txo qhov loj me ntawm qhov vuam.
Laser vuam tuab, thiab tom qab ntawd paub txog ntau txoj kab laser hlau vuam cov phaj tuab.
Qhov sib txawv ntawm laser hlau vuam thiab laser hlau vuam
Daim ntawv ntawm laser hlau filler vuam tau qhia nyob rau hauv Daim Duab 1, uas txawv ntawm laser hlau filler brazing qhia nyob rau hauv Daim Duab 2. Cov ntsiab lus tseem ceeb ntawm ob txoj kev vuam yog
Zoo sib xws, yog tsim los ntawm lub teeb laser, vuam hlau, vuam qhov chaw, roj tiv thaiv raws li qhov xav tau tiag tiag los txiav txim siab seb puas yuav ntxiv, koom nrog
Thiab cov khoom siv tseem ceeb yog tshuab pub hlau, tshuab vuam, hlau muab vuam phom mos taub hau, vuam taub hau, laser muaj zog siab.
Daim Duab 1 Laser hlau fusion vuam
Daim Duab 2 Laser hlau brazing
Txawm hais tias yeej tsis muaj qhov sib txawv ntawm daim ntawv sab nraud ntawm ob txoj kev vuam, muaj qhov sib txawv tseem ceeb hauv qhov tseem ceeb. Thaum laser hlau vuam,
Lub laser feem ntau siv lub laser fiber ntau zog, raws li pom hauv Daim Duab 3, lub laser tsis yog tsuas yog xav tau cov hlau vuam xwb, tab sis kuj xav tau yaj cov hlau puag thiab hauv
Qhov tshwj xeeb qhov nyhuv ntawm laser tob penetration vuam yog tsim rau ntawm lub hauv paus hlau, tsim ib lub pas dej sib sib zog nqus, thiab cov khoom sib xyaw ntawm cov hlau vuam yog sib xyaw tag nrho nrog cov hlau sib xyaw ntawm cov hlau hauv paus.
Ib lub pas dej ua los ntawm cov hlau sib xyaw ua ke tshiab tau tsim, thiab cov khoom sib xyaw, qhov sib piv thiab qhov zoo ntawm cov pas dej ua los ntawm cov hlau sib xyaw ua ke loj dua li ntawm cov hlau vuam thiab cov khoom siv hauv paus.
Yog li ntawd, cov hlau vuam tsim nyog tuaj yeem ntxiv rau hauv cov txheej txheem vuam raws li qhov ua tau zoo ntawm cov khoom siv hauv paus nws tus kheej, yog li txhawm rau txhim kho kev ua haujlwm vuam.
Ntawm qib saib, qhov tsis kam tawg, tsis kam qaug zog, tsis kam xeb, tsis kam hnav thiab lwm yam ntawm qhov vuam tau txhim kho zoo dua. ntxiv rau
Tsis tas li ntawd, laser hlau vuam tuaj yeem ua tau ntau txoj kab sib dhos vuam, vim nws tuaj yeem ua tiav qhov vuam tob tob nrog cov nyhuv me me, uas tuaj yeem ua tiav
Qhov kev sib koom ua ke tag nrho ntawm ob txheej hauv qab ntawm lub hlaws weld zam kev puas tsuaj loj ntawm kev tsis sib koom ua ke, yog li nws muaj peev xwm vuam cov pob qij txha tuab loj.
Thaum twghlau laserbrazing, lub laser feem ntau siv lub zog siab semiconductor laser, raws li pom hauv Daim Duab 4
Ntawm cov hlau vuam, tsuas yog me me ntawm laser yuav ua rau ntawm qhov vuam thiab yaj me me ntawm qhov chaw ntawm qhov vuam, thiab lub pas dej yaj yuav luag yaj los ntawm kev yaj.
Cov hlau vuam tau tsim, yog li qhov kev ua tau zoo ntawm kev vuam feem ntau nyob ntawm cov khoom sib xyaw thiab qhov sib piv ntawm cov hlau vuam thiab cov hlau vuam yaj ntawm qhov vuam.
Lub hom phiaj tseem ceeb ntawm laser hlau brazing yog ua kom tiav qee qhov kev sib txuas ntawm lub weld sib koom ua ke.
Thiab kev sib khi, thiab laser hlau brazing tsis tuaj yeem ua ntau txoj kab sib dhos vuam, ob txheej sab saud thiab qis ntawm qhov vuam yeej tsis tuaj yeem khov kho
Tam sim no tau sib xyaw ua ke tag nrho thiab zoo, cov khoom siv kho tshuab ntawm qhov sib koom ua ke tsis zoo heev.
Daim teb thov ntawm laser hlau vuam
Nrog rau kev txhim kho ntawm cov tshuab laser hlau filler vuam thiab kev nce ntawm laser fais fab txwv, qhov ntau ntawm daim ntawv thov ntawmlaser hlau filler vuam
Ntau thiab ntau dua, feem ntau yog nyob rau hauv cov hauv qab no:
Laser hlau vuam ntawm aluminium alloy
Feem ntau, vim tias cov hlau txhuas nws tus kheej muaj kev cuam tshuam siab rau lub laser thiab kev ua kom sov siab, cov hlau txhuas yog laser welded.
Thaum lub zog laser xav tau loj, qhov no yuav ua rau cov ntsiab lus kub qis hauv cov hlau txhuas (xws li Mg, Zn, thiab lwm yam) ua rau muaj kev ua pa loj thiab hlawv,
Tib lub sijhawm, qhov kev ntxhov siab ntawm qhov chaw qis ntawm cov hlau molten cuam tshuam rau cov yam ntxwv ntawm qhov vuam, thiab cov laj thawj no yuav ua rau muaj cov hlau sib txuas laser vuam.
Muaj ntau yam teeb meem - cov khoom siv tsis zoo ntawm cov pob qij txha vuam, kev tsim vuam tsis zoo, porosity thiab tawg loj heev. Hloov chaw, lub laser siv los sau cov hlau
Kev vuam txhuas alloy yuav txhim kho cov teeb meem no tau zoo heev:
①laser hlau vuam tuaj yeem txhim kho qhov kev nyuaj siab ntawm qhov chaw vuam, ua kom zoo dua qhov vuamHom, thiab qhov vuam txheej txheem txaws me me;
②Qhov ntxiv ntawm cov hlau vuam tsis tsuas yog cuam tshuam rau qhov kev taw qhia siv lead ua ntawm cov siv lead ua cylindrical hauv qhov vuam, tab sis kuj tseem ua rau qhov vuam tsis zoo.Lub crystalline interface tsim los ntawm kev loj hlob ntawm cov tub ntxhais columnar siv lead ua rau kev sib txuas ua ke zoo dua, thiab tseem txhim kho qhov nqus ntawm cov khoom siv rau lub laser.
Nrog rau qhov nce ntawm qhov dav ntawm melting, qhov microhardness txo qis me ntsis, thiab lub zog tensile thiab elongation ntawm qhov sib koom ua ke yuav tseem ceeb nyob rau hauv cov txheej txheem zoo tshaj plaws.
Txhim kho; (3) Vuam nrog cov txheej txheem tsim nyog tuaj yeem tsis muaj qhov tsis zoo sab hauv, microhardness ntawm HV60 lossis ntau dua, thiab sib koom ua ke HAZ
Tsis muaj qhov pom tseeb ntawm qhov sib koom ua ke hauv thaj chaw, thiab qhov tawg yog nyob rau hauv thaj chaw khoom siv thaum lub sijhawm xeem tensile.
Laser hlau vuam ntawm cov hlau sib txawv
Rau qee qhov chaw ua haujlwm nyuaj lossis raws li kev txiav txim siab txog tus nqi, feem ntau nws tsim nyog muaj ntau yam ntawm cov khoom ua haujlwm tib lub sijhawm
Cov khoom tshwj xeeb, xws li kev tiv taus corrosion, lub zog tshwj xeeb siab, tiv taus kub, tiv taus hnav, conductivity siab, cua sov zoo dissipation, thiab lwm yam, tab sis feem ntau
Cov ntaub ntawv hlau tsis tuaj yeem muaj ntau yam khoom tshwj xeeb tseem ceeb dua tib lub sijhawm, thiab cov ntaub ntawv hlau uas muaj cov khoom tshwj xeeb feem ntau yog
Tsawg thiab kim, tsis tuaj yeem siv ntau ntau, yog li ntawd yog tias koj tuaj yeem ua ntau yam khoom siv nrog cov khoom tshwj xeeb kom ua tiav kev sib txuas zoo, ces
Tej zaum yuav ua tau raws li qhov yuav tsum tau siv. Qhov sib txawv ntawm cov khoom siv lub cev thiab tshuaj ntawm cov khoom siv hlau sib txawv feem ntau loj heev, uas yog qhov tsis zam hauv cov txheej txheem vuam
Kev tsim cov intermetallic compounds, uas muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov pob qij txha weld, brittle intermetallic compounds yuav ua rau weld yooj yim heev rau kev tsim.
Nws nyuaj heev rau siv ib lub laser ncaj qha los vuam cov hlau sib txawv, thiab nws txoj kev ruaj khov nyuaj rau tswj hwm
Nyuaj rau kev tsim dua tshiab. Muaj ntau tus kws tshawb fawb thiab cov kws tshaj lij tau pom tias kev vuam hlau laser zoo rau kev vuam cov hlau sib txawv, thiab qhov kev xaiv yog qhov tsim nyog
Cov hlau nplaum tuaj yeem tiv thaiv kev tsim cov tshuaj intermetallic rau qee qhov, thiab tuaj yeem txhim kho cov txheej txheem ntawm cov pob qij txha welded.
Kev Ua Tau Zoo:
①Mg/Cu lap sib koom ua ke welded los ntawm laser hlau filling welding tuaj yeem tsim tau zoo nyob rau hauv cov txheej txheem tsim nyog.Lub zog siab tshaj plaws ntawm cov hlau sib txuas sib txawv nrog qee lub zog tuaj yeem ncav cuag 164.2MPa, uas yog 64% ntawm cov hlau magnesium alloy.
② Kev kawm txog kev vuam ntawm Al/Ti lub pob qij txha thiab lub pob qij txha taub qab, thiab cov txiaj ntsig qhia tau tias cov txheej txheem vuam ruaj khov thiab tsim thaum siv lub teeb pom kev zoo.Zoo nkauj, ntau yam ntawm cov txheej txheem tsis, weld zoo, nws lub zog tensile siab tshaj plaws ncav cuag 94% ntawm cov hlau txhuas alloy;Txhim kho kev sib txuas.Rau cov workpieces nrog lub hom phiaj bearing, yog tias lub weld tawg, nws cov tuab zoo yuav raug txo qis, thiab cov khoom siv kho tshuab yuav raug txo qis yog tias lub weld tom.
Nws yuav ua rau muaj kev ntxhov siab ntawm ntug ntawm qhov vuam, thiab cov khoom siv kho tshuab yuav raug txo qis. Rau cov khoom ua haujlwm nrog cov qauv xav tau, yog tias qhov vuam tawg
Kev khawb lossis tom ntug tuaj yeem muaj kev cuam tshuam loj heev rau qhov muag thiab tsis tuaj yeem lees txais. Yuav kom ua rau qhov vuam tag nrho, laser hlau vuam
Nws yog ib txoj kev zoo heev, vim tias cov hlau vuam tau sib xyaw rau hauv lub pas dej ua kua, nws tuaj yeem ua rau kom qhov ntim ntawm lub pas dej ua kua ntau ntxiv, thiab tom qab ntawd xyuas kom meej tias qhov vuam puv.
Qhov tsis zoo ntawm ntug tom.
Rau cov khoom ua haujlwm uas muaj qhov sib koom ua ke loj (feem ntau≥0.3 hli), ib qho laser vuam yog qhov nyuaj rau ua tiav kev sib txuas zoo, thiab tsuas yog tuaj yeem sau
Cov khoom siv ntxiv tuaj yeem sau qhov sib txawv ntawm qhov vuam, yog li laser hlau vuam yog qhov kev daws teeb meem zoo heev.
Kev vuam fillet nqaim
Qhov sib txawv nqaim laser hlau filling vuam tuaj yeem paub txog kev vuam zoo ntawm cov phaj nruab nrab thiab tuab los ntawm kev siv cov lasers me me thiab nruab nrab, tsis yog tsuas yog los ntawm kev ntxiv vuam xwb
Hlau los hloov cov khoom sib xyaw thiab cov qauv ntawm cov hlau vuam, txhim kho kev ua tau zoo ntawm cov pob qij txha vuam, tab sis kuj txhim kho qhov nqes hav vuam laser ib zaug.
Qhov kev hloov pauv thiab kev ua txhaum ntawm qhov ncauj tshem tawm, thiab thaj chaw cuam tshuam los ntawm cua sov ntawm lub vuam yog nqaim, thiab kev ntxhov siab ntawm qhov sib koom ua ke kuj me me, uas muaj kev ua haujlwm zoo
Yog li ntawd, nyob rau xyoo tas los no, ntau tus kws tshaj lij thiab cov kws tshawb fawb tau ua kev tshawb fawb txog nws:
①Siv cov laser hlau sib txawv nqaim filling multi-channelTxoj kev vuam welded 40mm tuab Q345D Marine steel phaj, cov txiaj ntsig qhia tau tias cov txheej txheem vuam tsim nyog tuaj yeem tau txais cov duab zoo,
Qhov sib koom ua ke welded tsis muaj porosity, tsis muaj qhov tsis xws luag xws li tsis-fusion, qhov cuam tshuam toughness ntawm lub weld center yog qhov zoo, thiab lub zog tensile ntawm lub weld yog siab dua li ntawm cov khoom siv hauv paus;
②Cov hlau rotor tuab 50 hli tau welded los ntawm qhov sib txawv laser hlau filling multi-pass welding, thiab cov txiaj ntsig tau qhia tias cov txheej txheem vuam txheej txheem tau tsim nyog
Nws tuaj yeem tau txais kev tsim zoo, tsis muaj qhov tsis zoo xws li phab ntsa sab tsis sib xyaw, qhov cuam tshuam ntawm qhov sib koom ua ke raug txo qis, tab sis nws lub zog tensile siab dua li ntawm niam
Ntoo;③Kev kawm txog qhov sib txawv nqaim laser hlau filling vuam ntawm 20mm tuab 5083 txhuas alloy, thiab cov txiaj ntsig qhia tau tias cov txheej txheem vuam tsim nyog
Ib qho kev sib koom ua ke uas muaj qhov me dua thiab tsis muaj qhov tsis zoo xws li tsis sib xyaw ua ke tuaj yeem tau txais.
Cov ntaub ntawv thov thiab cov khoom siv thiab cov lus qhia txog cov txheej txheem
1. Cov ntaub ntawv thov
Txhim kho kev sib txuas ua ke
Cov Kev Cai: 1 hli thiab 3 hli stainless hlau vuam, qhov vuam seam yuav tsum tsis muaj porosity, thiab cov molding zoo.
Cov Khoom Siv: RFL-C4000 (fiber core diameter 200)μm), lub tshuab pub hlau, lub taub hau vuam.
Rooj 5 Cov lus pom zoo txog qhov loj thiab qhov zoo ntawm cov qhov (groove shape)
Cov Txiaj Ntsig: Cov pwm zoo thiab qhov vuam tsis muaj porosity, raws li pom hauv Daim Duab 5.
Daim Duab 5 Kev tsim cov vuam thiab cov qauv hla ntu
Qhov sib txawv nqaim laser hlau sau ntau-pass vuam
Cov Kev Cai: 18 hli tuab Q345 Marine steel phaj welded, xav tau tsawg dua qhov weld, tsis muaj non-fusion, sib koom ua ke tensile
Lub zog siab dua li cov khoom siv hauv paus, thiab qhov sib txuas ua ke zoo dua.
Cov Khoom Siv: RFL-C6000 (fiber core diameter 400)μm), lub tshuab pub hlau, lub taub hau vuam.
Cov txheej txheem tsis: qhov vuam hla yuav tsum tau beveled, qhov loj ntawm beveled yog qhia nyob rau hauv Daim Duab 6, thiab lwm yam txheej txheem vuam cov txheej txheem tau qhia nyob rau hauv Rooj 2.
Daim Duab 6 Qhov loj ntawm qhov Groove
Cov txiaj ntsig: Cov pwm zoo, tsis muaj kev sib xyaw, thiab qhov vuam yeej tsis muaj porosity, raws li pom hauv Daim Duab 7, thiab qhov kev sim tensile tau ua tiav.
Nws tau ua pov thawj tias qhov vuam tawg hauv cov khoom siv hauv paus, qhia tias lub zog tensile ntawm qhov sib koom ua ke siab dua li ntawm cov khoom siv hauv paus.
DUAB 7 Daim duab Metallographic ntawm qhov seem ntawm qhov vuam
2. Cov lus qhia txog cov khoom siv thiab cov txheej txheem
Txhim kho qhov sib txuas thiab qhov zoo
Rau qhov sib txuas ntawm cov hlau laser vuam ntawm cov ntaub ntawv siv, txhawm rau txhim kho qhov vuam tsim, feem ntau pom zoo kom lub laser thiab fiber core txoj kab uas hla,
Lub taub hau vuam yuav tsum tau teeb tsa kom ntseeg tau tias qhov chaw tsom mus rau qhov sib txawv yog nruab nrab ntawm 0.4 hli thiab 0.6 hli, thiab cov hlau vuam yuav tsum tau xaiv nrog qib tsim nyog.
Lwm cov kev ntsuas vuam tau qhia nyob rau hauv Rooj 2 thiab Rooj 3.
Qhov sib txawv nqaim laser hlau sau ntau-pass vuam
Rau qhov sib txawv nqaim laser hlau sau ntau-pass vuam ntawm nruab nrab tuab phaj, nws feem ntau pom zoo tias qhov chaw tsom mus rau qhov loj yog 0.6mm ~ 1.0mm, thiab
Thiab cov hlau vuam yuav tsum xaiv qib tsim nyog, ntxiv rau, qhov sib koom ua ke qhov loj me yuav tsum tsim nyog, qhov loj me ntawm qhov groove tsis tuaj yeem loj dhau,
Txwv tsis pub, nws yooj yim ua rau tsis sib xyaw sab hauv lub vuam, thiab qhov loj me ntawm qhov groove uas pom zoo dav dav tau qhia hauv Rooj 5; Tus lej ntawm cov hlaws dai yuav tsum yog raws li qhov siab tshaj plaws ntawm qhov sib koom ua ke
Loj tuab kom txiav txim siab, thawj qhov vuam hauv qab raug pom zoo kom siv lub peev xwm vuam siab tshaj plaws ntawm cov khoom siv los txiav txim siab, tom qab txhua qhov tob ntawm ib qho
Feem ntau 3 hli ~ 5 hli; Raws li rau cov txheej txheem vuam siv rau txhua lub hlaws, nws yog qhov tsim nyog los vam khom nws qhov tob vuam thiab thaum twg
Qhov dav ntawm qhov chaw vuam pem hauv ntej tau txiav txim siab. Thaum qhov dav ntawm qhov chaw vuam loj dua, qhov ntau ntawm qhov tsis pom tseeb yuav tsum tau nce ntxiv kom tiv thaiv phab ntsa sab kom tsis txhob sib xyaw.
Lub sijhawm tshaj tawm: Plaub Hlis-03-2025
