Daim Ntawv Thov Ntawm Laser Vuam Tshuab Hauv Aluminium Alloy Vuam

Kev siv aluminium alloy los hloov cov tsoos hlau ntawm lub tsheb yog ib txoj hauv kev tseem ceeb kom paub txog lub teeb yuag ntawm lub tsheb. Txawm li cas los xij, vim yog cov yam ntxwv ntawm aluminium alloy nrog zoo thermal conductivity thiab ib tug loj coefficient ntawm linear expansion, muaj ib co teeb meem nyob rau hauv vuam:

1) Aluminium alloy welded ob leeg softening tiag, tsis tshua muaj zog coefficient;

2) Aluminium alloy yog yooj yim rau oxidize los tsim refractory oxide zaj duab xis (Al2O3, melting point yog 2060 degree), uas yuav tsum tau siv lub high-power welding txheej txheem;

3) Yooj yim tsim pores;

4) Lub linear expansion coefficient yog loj, yooj yim los tsim vuam deformation thiab vuam tawg;

5) Lub thermal conductivity thiab tshwj xeeb tshav kub muaj peev xwm yog loj, thiab lub tshav kub input yog 2 mus rau 4 lub sij hawm loj dua li cov hlau welded.

Yog li ntawd, thiaj li yuav tau txais kev ua tau zoo ntawm aluminium alloy welding pob qij txha, lub zog siab ceev, tsis tshua muaj vuam cua sov input thiab siab vuam ceev yog xav tau, cov laser vuam yog ib qho kev cog lus zoo tshaj plaws aluminium alloy vuam technologies.

Laser welding yog ib qho zoo thiab meej vuam txoj kev siv lub zog ceev ceev laser beam raws li lub tshav kub qhov chaw, uas muaj cov yam ntxwv ntawm ceev ceev, loj nkag, me me deformation, zoo ua yooj thiab yooj yim automation thaum thov rau aluminium alloy vuam. Nws tau dav siv nyob rau hauv aerospace, tsheb tsim thiab lub teeb kev lag luam electronics thiab lwm yam teb, tab sis nws yog siv nyob rau hauv aluminium alloy laser vuam. Kuj muaj qee qhov teeb meem thiab teeb meem.

1.1 Aluminium alloy muaj qhov nqus tsawg heev ntawm laser

Aluminium alloy muaj lub zog cuam tshuam rau laser, uas yog vim qhov siab ceev ntawm cov hluav taws xob dawb hauv cov khoom ntawm aluminium alloy, uas yooj yim rau kev cuam tshuam lub zog nrog photon nyob rau hauv lub beam. Cov kev tshawb fawb qhia tau hais tias qhov kev cuam tshuam ntawm aluminium alloy rau roj CO2 laser yog siab li 90%, thiab qhov cuam tshuam ntawm cov khoom laser yog ze rau 80%. Nyob rau tib lub sijhawm, aluminium alloy muaj lub zog thermal conductivity, uas ua rau muaj qhov nqus tsawg heev ntawm aluminium alloy laser. Yog li ntawd, kev ntsuas tsim nyog yuav tsum tau coj los txhim kho lub laser nqus ntawm aluminium alloy.

Kev ntsuas optimization:

1) Los ntawm kev ua kom lub zog laser ceev kom txhim kho qhov nqus ntawm aluminium alloy laser. Qhov nce ntawm lub zog ntawm lub zog laser yuav ua rau lub qhov me me hauv lub vuam pas dej ua ke, uas tuaj yeem txhim kho qhov nqus ntawm cov khoom mus rau lub laser.

2) Txais cov txheej txheem kev kho kom zoo. Electrolytic polishing, anodizing thiab sandblasting tau siv los sib piv cov laser absorptivity ntawm aluminium alloy. Nws tau pom tias anodizing thiab sandblasting ntawm aluminium alloy nto tuaj yeem txhim kho lub laser nqus.

3) Nws tseem pom tau tias daim ntawv sib koom ua ke yuav cuam tshuam rau kev nqus ntawm laser. V-shaped bevel thiab square bevel yog qhov tsim nyog rau kev tsim cov qhov tseem ceeb tshaj li cov pob qij txha uas tsis yog-bevel, thiab lub zog laser zog nce ntxiv thiab cov laser nqus ntawm aluminium alloy kuj nce.

1.2 Yooj yim tsim pores

Pores yog qhov tsis zoo tshaj plaws thiab tseem ceeb tshaj plaws hauv laser vuam ntawm aluminium alloy. Pores hom tuaj yeem muab faib ua ob pawg. Ib qho yog tias vim qhov poob qis hauv cov kua dej ntawm hydrogen hauv cov txheej txheem txias ntawm laser vuam ntawm aluminium alloy, cov ntsiab lus hydrogen ntawm molten aluminium alloy tuaj yeem ncav cuag {{0}}.69mL / 100g, cov ntsiab lus hydrogen ntawm aluminium alloy tom qab txias thiab solidification yog 0.036mL / 100g, thiab supersaturated hydrogen precipitates los tsim hydrogen pores. Tsis tas li ntawd, muaj cov oxide zaj duab xis nyob rau saum npoo ntawm aluminium alloy, thiab cov dej hauv cov dej siv lead ua, huab cua thiab cov roj tiv thaiv ntawm qhov chaw ntawm aluminium alloy yog ncaj qha decomposed rau hauv hydrogen thaum lub sij hawm vuam. Cov hydrogen pores no lig dhau los khiav tawm thaum lub sijhawm txias ceev ntawm laser vuam ntawm aluminium alloys, thiab nyob twj ywm hauv qhov vuam los tsim hydrogen pores. Lwm qhov yog vim qhov tsis ruaj khov ntawm qhov keyhole generated nyob rau hauv lub laser vuam txheej txheem thiab vau, thiab cov kua hlau tsis muaj sij hawm los sau lub qhov. Cov porosity ntau dhau yuav txo qhov ntom ntawm cov vuam, txo cov kabmob muaj peev xwm ntawm kev sib koom tes, thiab txo lub zog thiab plasticity ntawm kev sib koom ua ke mus rau qhov sib txawv. Muaj ntau yam kev ntsuas los txo cov porosity tsis xws luag nyob rau hauv laser vuam ntawm aluminium alloy, xws li hloov txoj kev taug kev ntawm lub laser beam, siv beam oscillation mus do lub molten pas dej ua ke, ua rau muaj peev xwm ntawm porosity khiav tawm ntawm qhov chaw, siv hlau los yog alloy. hmoov, thiab siv ob-spot technology thiab laser composite welding tuaj yeem ua tiav cov txiaj ntsig ntawm kev txo cov porosity, tab sis nws yog qhov nyuaj rau kev tshem tawm hauv paus.

1.3 Kub tawg nyiam

Yog vim li cas ntawm kub tawg nyob rau hauv laser welding ntawm aluminium alloy yog tsuas yog muaj feem xyuam rau nws tus kheej yam ntxwv thiab cov txheej txheem vuam. Thaum lub sij hawm solidification ntawm aluminium alloy, lub shrinkage tus nqi yog loj (txog li 5%), lub vuam kev nyuaj siab thiab deformation yog loj, thiab cov hlau weld yuav tsim tsawg melting point eutectic qauv nyob rau hauv lub grain ciam thaum lub sij hawm crystallization, thiaj li hais tias cov nplej ciam teb. Kev khi quab yuam yog tsis muaj zog, thiab kub tawg yog tsim nyob rau hauv qhov kev txiav txim ntawm tensile kev nyuaj siab. Qhov kub tawg tuaj yeem raug txo los ntawm kev sau cov hlau los yog cov hmoov txhuas, thiab cov kub tawg tuaj yeem raug txo los ntawm kev kho cov txheej txheem vuam kom tswj cov cua sov thiab txias ceev.

1.4 softening ntawm weld qauv thiab tshav kub cuam tshuam cheeb tsam

"Softening" yog qhov tshwm sim ntawm txo lub zog thiab hardness ntawm welded pob qij txha. Thaum siv laser welding aluminium alloy sib koom ua ke, cov qauv vuam thiab cov cua sov ua rau thaj tsam ntawm qhov sib koom ua ke kuj muaj teeb meem softening. Ntau cov kev tshawb fawb tau pom tias qhov tshwm sim softening ntawm aluminium alloy welding yog ib qho nyuaj rau kev tshem tawm hauv paus, tab sis piv nrog cov roj-shielded vuam, laser vuam txo cov cua sov input thiab ua rau cov softening cheeb tsam ntawm weld nqaim. Piv nrog MIG vuam, qhov "softening" degree ntawm laser welded aluminium alloy pob qij txha yog qis dua, thiab lub zog tensile nce nrog qhov nce ntawm vuam ceev. Lub zog ntawm plasma ntawm cov txheej txheem vuam Aluminium lub zog ionization yog tsawg, laser vuam yog yooj yim dua rau cov hlau plasma, ntshav los ntawm laser refraction thiab deflection, yog li hloov lub tsom xam ntawm lub laser beam, thiaj li hais tias cov weld penetration ratio yog txo, cuam ​​tshuam qhov zoo ntawm qhov sib koom ua ke. Los ntawm presetting cov hmoov rau ntawm lub workpiece nto, qhov nthuav thiab pulsation ntawm plasma nyob rau hauv qhov siab kev taw qhia yog tsis muaj zog, yog li ntawd lub plasma muaj peev xwm tswj tau ib tug kuj ruaj khov amplitude ntawm lub workpiece nto.

2.1 Aluminium alloy laser self-fusion vuam

Laser self-fusion welding yog hais txog lub zog siab ceev laser beam raws li cov cua sov, cuam tshuam rau ntawm cov khoom siv hauv paus, kom cov khoom siv hauv paus nws tus kheej melts, tsim ib qho kev sib koom ua ke vuam txoj kev. Rau laser vuam ntawm aluminium alloy, qhov saum npoo ntawm aluminium alloy muaj siab reflectivity rau lub laser, thiab loj laser zog yuav tsum tau thaum lub sij hawm vuam. Qhov txoj kab uas hla ntawm qhov chaw laser yog me me, qhov tseeb ntawm cov khoom siv vuam yog siab, thiab qhov siab ntawm qhov sib txawv ntawm cov khoom yog tsawg, thiab qhov sib txawv ntawm cov khoom feem ntau yuav tsum yog hauv qab no 0. 2 hli. Thaum lub sij hawm vuam txheej txheem, cua kub thiab txias ceev ceev ceev, vuam porosity tsis xws luag muaj ntau, lub laser zog ceev yog concentrated, thiab cov keyhole nyhuv yog ib qho yooj yim ua rau lub phenomenon ntawm weld concave thiab ntug tom, yog li cov txheej txheem vuam tsis muaj. kev xav tau siab dua. Laser self-fusion vuam nyob rau hauv aluminium alloy vuam qhia txog qhov zoo ntawm vuam zoo, vuam ceev thiab yooj yim automation, thiab yog dav siv nyob rau hauv kev lag luam automotive. Hauv kev lag luam tsheb hluav taws xob, kev sib khi ntawm lub hwj chim roj teeb lub plhaub yog tsim los ntawm aluminium alloy laser self-fusion vuam. Nyob rau hauv lub cev txhuas ntawm lub tuam txhab hluav taws xob tsheb tshiab hauv tsev, qhov vuam ntawm lub qhov rooj sib dhos thiab sab phab ntsa qauv kuj yog ua los ntawm aluminium alloy laser self-fusion vuam.

2.2 Aluminium alloy laser hlau filling vuam

Nyob rau hauv laser hlau filling welding, laser tseem yog siv los ua lub ntsiab cua sov qhov chaw rau yaj cov welded hlau, tab sis lub tsis siv neeg hlau pub khoom siv yog siv mus tas li pub cov filling hlau rau hauv lub pas dej ua ke kom ua tiav cov txheej txheem metallurgical kev twb kev txuas. Piv nrog rau lub laser self-fusion welding, lub laser xaim filling welding tau so kom txaus ntawm cov txheej txheem vuam qhov sib txawv ntawm qhov tseeb, los ntawm kev sau cov khoom sib txawv ntawm cov vuam hlau, txhim kho cov khoom siv hlau ntawm cov vuam, tiv thaiv vuam kub tawg thiab qhov hws, txhim kho cov khoom sib txawv. stability ntawm cov txheej txheem welding thiab sib koom ua ke txhua yam khoom.

Aluminium alloy laser hlau welding muaj cov yam ntxwv ntawm qhov zoo-zoo li, cov txheej txheem sib txawv yog looser dua li laser self-fusion vuam, thiab lwm yam. Nws feem ntau yog siv rau sab nrauv ntawm lub cev, xws li ntawm sab saum toj npog thiab sab phab ntsa. , thiab nruab nrab ntawm lub sab sauv thiab sab phaj ntawm lub thawv ntim khoom. Kuj tseem muaj qee cov qauv txhawm rau kom tau txais kev vuam zoo dua thiab siv laser hlau vuam rau vuam aluminium alloy qhov rooj.

2.3 Aluminium alloy laser arc composite vuam

Laser-arc composite welding yog kev sib xyaw ntawm laser thiab arc ob yam ntawm cov khoom siv hluav taws xob nrog cov khoom sib txawv ntawm lub cev thiab lub zog sib kis, thiab ua haujlwm ua ke ntawm cov khoom siv welded. Nws Ob leeg muab tag nrho kev ua si rau qhov zoo ntawm ob qhov chaw tshav kub, thiab ua rau ib leeg qhov tsis txaus. Nyob rau hauv lub laser-arc composite welding ntawm aluminium alloy, lub arc tuaj yeem coj lub laser tshav kub qhov chaw, txhim kho lub peev xwm nqus ntawm aluminium alloy thiab lub zog siv tus nqi nyob rau hauv cov txheej txheem vuam, thiab qhov saum npoo formability ntawm vuam yog zoo dua li ntawm cov khoom siv. laser self-fusion vuam. Tsis tas li ntawd, kev taw qhia ntawm lub arc tuaj yeem txo qhov raug clamping qhov tseeb ntawm vuam qhov chaw, thiab arc muaj cov nyhuv diluting ntawm laser vuam plasma, uas tuaj yeem txo cov nyhuv shielding ntawm plasma ntawm lub laser. Lub laser plays lub luag haujlwm tseem ceeb hauv kev ruaj ntseg ntawm lub arc, kom lub arc tuaj yeem ua haujlwm ruaj khov ntawm kev sib koom ua ke thaum lub sij hawm vuam ceev, uas tuaj yeem txhim kho qhov vuam zoo ntawm qhov sib koom ua ke thiab nce qhov vuam ceev.

Muaj ntau qhov zoo hauv daim ntawv thov ntawm laser vuam hauv kev lag luam tsheb:

1) Nws vuam ceev ceev, txhim kho cov kev sib dhos ntau lawm, thiab vuam ceev tuaj yeem ncav cuag 6m / min, uas muaj qhov zoo sib xws ntawm lwm txoj kev sib txuas ntawm lub cev dawb (xws li qhov chaw vuam, arc vuam, riveting);

2) Nws muaj kev txwv me me ntawm lub cev qauv, tuaj yeem siv rau cov qauv vuam sib txawv (phaj, kaum, T-kos, pob tw), thiab yog ib qho kev sib txuas, qhov twg cov nqaj tuaj yeem ncav cuag, qhov tsim tau hloov tau ntau dua;

3) Nws cov kev xav tau ntawm laser vuam sab yog tsawg, vuam sab yuav tsum welded nyob rau hauv 6 ~ 8 hli, piv nrog rau qhov chaw vuam sab yuav tsum (16 hli) txo los ntawm ib nrab, tuaj yeem ua lub luag haujlwm hauv lub teeb yuag;

4) Lub laser vuam qauv ntawm lub ru tsev thiab lub hau npog tuaj yeem txo lub cev zoo, thiab tsis tas yuav tsum tau siv cov sealant thiab tsis muaj sab nrauv trim phaj, txuag lub cev nqi;

5) Laser vuam vuam sib txuas yog du thiab zoo huv si, zoo tsos, thiab lwm yam.

Vim muaj ntau yam zoo ntawm laser vuam, nws tau dav kev txhawj xeeb hauv kev lag luam tsheb thiab tau txais kev pom zoo los ntawm ntau lub tuam txhab tsheb. Nws yog siv nyob rau hauv ntau qhov chaw ntawm European qauv (xws li Volkswagen, BMW, Audi, Mercedes-Benz, Peugeot, thiab lwm yam.) thiab American qauv (xws li Buick, Ford, Cadillac, Chevrolet, thiab lwm yam) (ru tsev, rooj sib txoos, lub cev lub hau sab nrauv vaj huam sib luag, sab structural qhov chaw thiab ntws tank vuam, thiab lwm yam), thiab raws li ib tug ntawm cov cim ntawm high-zoo lub cev nyob rau hauv dawb.

Txawm li cas los xij, vim qhov kev nqis peev ib zaug siab, cov ntawv hlau raug thiab cov cuab yeej siv tau raug, nws tsis tau siv dav hauv cov tuam txhab tsheb hauv tsev.

Tam sim no, laser vuam ntawm aluminium alloy tau siv nyob rau hauv loj ntau lawm nyob rau hauv aluminium alloy lub cev. Audi TT, A6 / A8 thiab Cadillac flagship CT6 yog welded nrog aluminium alloy laser vuam nyob rau sab saum toj npog thiab sab phab ntsa. Cadillac CT6, Audi A6 / A8 / Q5, BMW 5 series / 7 series, Mercedes-Benz S series / C series thiab lwm yam qauv ntawm lub cev npog phaj txais yuav aluminium alloy laser vuam. Lub qhov rooj ntawm Audi A6 / A8, Mercedes-Benz S / C Series, BMW 5 / 7 series, thiab lwm yam., txais yuav aluminium alloy laser vuam. Nio kuj tau siv ntau ntawm aluminium alloy laser vuam nyob rau hauv lub hau thiab sidewall nrog rau lub qhov rooj.

Nrog kev nce qib ntawm kev siv tshuab thev naus laus zis, kev lag luam muaj peev xwm thiab kev ua haujlwm zoo, tus nqi ntawm kev siv laser vuam yuav txo qis heev. Nyob rau tib lub sijhawm, nrog rau kev txhim kho ntawm lub tsheb lub teeb, daim ntawv thov ntawm aluminium alloy nyob rau hauv lub tsheb lub cev yog nce, laser vuam raws li ib tug ntawm cov tseem ceeb kev twb kev txuas txoj kev los daws qhov teeb meem ntawm aluminium alloy welding zoo, yuav tau dav siv nyob rau hauv lub automotive kev lag luam.

Xi'an Guosheng Laser Technology Co., Ltd. yog ib lub tuam txhab high-tech tshwj xeeb hauv R & D, tsim thiab muag cov tshuab laser tsis siv neeg cladding, high-speed laser cladding tshuab, laser hardening tshuab, laser vuam khoom thiab 3D tshuab luam ntawv.

Yog tias koj txaus siab rau peb cov khoom, thov hu rau peb ntawm bob@gshenglaser.com.