Daim Ntawv Thov Ua Npuas Ncauj Aluminium Sandwich Cov Khoom Siv Hauv Tsev tawg-pov thawj

Aluminium ua npuas ncauj muaj ntau daim ntawv thov nyob rau hauv lub tsev, thiab lub tsev tawg-pov thawj cov ntaub ntawv yog ib qho ntawm nws cov tseem ceeb siv. Piv txwv li, steel phaj ua npuas ncauj aluminium composite tawg-pov thawj txheej tuaj yeem tiv thaiv cov qauv kab ke ntawm lub tsev, lub vaj huam sib luag ua los ntawm ua npuas ncauj aluminium thiab steel phaj tuaj yeem siv los ua lub qhov rooj tiv thaiv ntawm lub tsev, thiab ua npuas ncauj aluminium sandwich beam. tuaj yeem siv los tiv thaiv lub tsev engineering, thiab lwm yam. Vim tias txhuas ua npuas ncauj yog ib yam tshiab ntawm cov khoom siv ua haujlwm, lub sijhawm txhim kho tsis ntev, tab sis nws lub zog nqus tau zoo heev thiab kev cuam tshuam tsis zoo txiav txim siab tias nws yuav muaj kev siv ntau dua hauv lub tsev tawg-pov thawj. .

1. Kev npaj tshuab ua npuas ncauj aluminium sandwich khoom

Txawm hais tias aluminium ua npuas ncauj muaj ntau qhov zoo, nws lub zog tsis muaj zog txwv nws daim ntawv thov. Foamed aluminium sandwich khoom yog cov khoom sib xyaw ntawm foamed aluminium core cov ntaub ntawv thiab cov khoom siv vaj huam sib luag muaj zog, xws li steel phaj thiab txhuas phaj, yog li ob qho tib si tuaj yeem ua tiav ib leeg hauv cov qauv thiab kev ua haujlwm. Ua npuas ncauj aluminium siv hauv tsev tawg-pov thawj yog cov khoom siv no. Muaj ntau txoj hauv kev npaj rau foamed aluminium sandwich cov ntaub ntawv, thiab muaj ob pawg tseem ceeb: ib qho yog los txuas cov pre-fabricated aluminium npuas rau cov khoom vaj huam sib luag, xws li gluing thiab vuam; lwm qhov yog txuas cov khoom vaj huam sib luag rau aluminium puag Lub foamed hmoov yog ua rau hauv preform, ces rhuab thiab foamed, thiab tom qab txias, foamed aluminium sandwich vaj huam sib luag yog tau. Ntxiv nrog rau ob hom no, muaj qee qhov kev tshawb nrhiav.

1.1 Txoj kev sib txuas

Txoj kev gluing yog kua nplaum rau cov foamed aluminium thiab lub vaj huam sib luag ua ke nrog cov nplaum, uas belongs rau txoj kev sib txuas ntawm lub cev, cov txheej txheem yog yooj yim, thiab cov khoom precision kuj yog siab. Txawm li cas los xij, cov txheej txheem ntxuav ntawm cov foamed aluminium thiab qhov chaw ntawm lub vaj huam sib luag ua ntej gluing yog qhov nyuaj, thiab qhov kub thiab txias tsis kam thiab corrosion tsis kam ntawm cov nplaum yog qhov tsis zoo, thiab lub zog sib txuas kuj tseem tsawg. Cov kev tsis txaus no txwv txoj kev loj hlob ntawm txoj kev no. Piv nrog rau txoj kev sib txuas, lub zog sib txuas ntawm txoj kev vuam tau zoo dua qub. Tam sim no, muaj kev tshawb fawb ntxiv ntawm txoj kev brazing thiab txoj kev laser vuam.

Brazing txoj kev yog txoj kev vuam ntawm foamed aluminium sandwich khoom uas tau tshawb fawb ntau dua tam sim no. Tus yuam sij rau txoj kev no yog nyob rau hauv kev xaiv ntawm solder thiab tshem tawm cov oxide zaj duab xis nyob rau saum npoo ntawm foamed aluminium. Vim tias cov khoom siv hluav taws xob muaj peev xwm sib txawv ntawm Sn-raws li solder thiab foamed aluminium puag cov ntaub ntawv, electrochemical corrosion yog nquag tshwm sim ntawm brazed sib koom, thiab qhov sib koom ua ke tsis muaj cua sov thiab tsis muaj zog. Wang Hui et al. siv nitrogen tiv thaiv los txhim kho lub zog ntawm brazed pob qij txha. Cov txiaj ntsig kev tshawb fawb pom tau tias qhov kev sib tshuam tsis tsim cov txheej txheem ua yeeb yaj kiab txuas ntxiv, tab sis yog tsim los ntawm qhov kawg-pore-rib kev sib tshuam. Yu Chong et al. siv Zn-Al-Cu alloy ua cov khoom siv. Txij li thaum lub solder muaj ib qho kev ua yeeb yaj kiab-tshem tawm, nws tsis tas yuav siv flux thaum vuam, uas tuaj yeem zam qhov teeb meem corrosion tshwm sim los ntawm kev siv flux; mechanical scraping yog siv. Tshem tawm 1 kis; siv ultrasonic kev co thaum vuam los ua kom cov vuam ntws thiab sau cov pores sib npaug; Thaum kawg, ib tug sandwich vaj huam sib luag nyob rau hauv uas lub solder thiab aluminium phaj, solder thiab foamed aluminium yog metallurgically ua ke. Chen Nan et al. siv cov ntawv ci tooj liab-aluminium daim ntawv-tooj ​​liab ntawv ci txheej txheej raws li cov txheej txheem nruab nrab, uas ua rau lub zog sib koom ua ke siab dua li ntawm cov hlau hauv paus, thiab optimized tsis xws li vuam kub thiab tuav lub sij hawm. Song Yufeng et al. siv Al-Si-raws li alloy li cov khoom siv brazing thiab ntshiab txhuas phaj ua faceplate, thiab tau foamed aluminium sandwich vaj huam sib luag los ntawm txoj kev brazing. Qhov cuam tshuam ntawm vuam kub, lub sijhawm thiab txheej txheem annealing ntawm kev ua haujlwm ntawm cov vaj huam sib luag sandwich tau tshawb xyuas los ntawm kev ntsuas orthogonal. Cov txheej txheem zoo tshaj plaws tau txais raws li hauv qab no: vuam kub yog 640 degree, lub sij hawm yog 15 min, thiab kev ntxhov siab annealing ntawm 400 degree yog 30 min; Kev ruaj ntseg ntawm lub vaj huam sib luag sandwich npaj los ntawm cov txheej txheem ntawm qhov kub thiab txias yog qhov zoo dua li los ntawm txoj kev nplaum.

Laser vuam yog ib txoj kev ntawm irradiating lub siab-siv thiab high-zog laser beam ntawm cov hlau nto kom yaj nws thiab txuas nws ua ke. Qhov zoo ntawm txoj kev no yog tias qhov deformation ntawm lub workpiece tom qab vuam yog me me, qhov kev ua tau zoo yog siab, thiab kev ua haujlwm tas mus li tuaj yeem ua tiav. Zhang Li et al. ntxiv 6061 aluminium alloy ntawm lub npuas aluminium thiab lub vaj huam sib luag nrog lub porosity ntawm 70 feem pua, melted 6061 aluminium alloy nrog lub tshav kub ntawm lub laser beam thiab nkag mus rau hauv lub qhov ntawm lub foam aluminium, thiaj li ua tau zoo dua vuam thiab tensile zog ntawm qhov sib koom welded. Nws yog 2.97MPa, uas yog ze rau lub zog ntawm foamed aluminium. Txawm li cas los xij, thaum lub sij hawm laser vuam, qhov nqus ntawm lub zog laser los ntawm cov khoom siv txhuas ua npuas ncauj yog txwv vim qhov kev xav ntawm lub pore cell phab ntsa hauv aluminium npuas thiab qhov kev txwv ntawm qhov pore qhov chaw. Nyob rau hauv qhov kev txiav txim ntawm qhov kub-kub kub qhov chaw, lub pores nyob rau hauv lub txhuas ua npuas ncauj yuav vau vim endothermic melting, yog li tsim ib tug dav weld cheeb tsam nrog ib tug ntom qauv. Laser vuam tseem nyob rau theem pib ntawm kev tshawb nrhiav, thiab tseem muaj txoj hauv kev ntev mus ua ntej kev tsim khoom lag luam. mus.

1.2 Foaming method

Liang Xiaojun et al. sib xyaw aluminium alloy hmoov nrog foaming tus neeg saib xyuas TiH2, thiab tom qab ntawd nias hlau, titanium panels thiab hmoov nyob rau hauv pwm, ua ntej ua ib tug foamable preform, thiab ces rhuab nyob rau hauv ib tug tej yam kub kom decompose TiH2 rau hauv hydrogen, yog li ntawd Melt foaming ua metallurgically bonded sandwich panels. . Txij li txoj kev no yuav tsum tau nias hauv pwm, qhov loj ntawm cov khoom tiav yog txwv. Zhang Min et al. muab cov hmoov txhuas txhuas sib xyaw nrog cov foaming tus neeg sawv cev ntawm cov panels, thiab tom qab ntawd ua cov preform los ntawm dov composite txoj kev, yog li zam qhov kev txwv ntawm qhov loj ntawm pwm, thiab ces muab tso rau hauv ib lub qhov cub rau cua sov thiab foaming. Cov txheej txheem cov kauj ruam yog yooj yim thiab cov nruam ntau lawm yog yooj yim dua. Qhov teeb meem tseem ceeb ntawm txoj kev sib xyaw dov yog qhov preform yog qhov ua rau cov hmoov poob thaum lub sij hawm dov txheej txheem, uas ua rau tsis muaj yield thiab tsawg thickness thiab precision ntawm lub phaj. Txhawm rau txhim kho qhov zoo ntawm preform, Song Binna li al. siv cov txheej txheem wrapping dov los ua lub preform, thiab muab cov hmoov txhuas txhuas kom foamed rau hauv ib lub raj txhuas, kaw thiab dov, thiab tom qab ntawd foamed. Txoj kev no daws cov teeb meem ntawm cov hmoov poob thiab cov kab nrib pleb ntawm ntug ntawm lub preform, thiab ua rau lub vaj huam sib luag sandwich nrog kev sib txuas zoo; Song Binna et al. tau kawm txog qhov cuam tshuam ntawm qhov txo qis ntawm qhov preform thiab cov qauv ntawm lub vaj huam sib luag sandwich. Kev tshawb fawb qhia tau hais tias thaum tus nqi txo yog 70 feem pua, qhov saum npoo ntawm lub preform yog tiaj tus thiab ua tiav, cov hmoov yog zoo li qub thiab ntom, thiab qhov zoo ntawm cov sandwich vaj huam sib luag zaum kawg kuj yog qhov zoo tshaj plaws. Liu Jia et al. ntxiv kawm txog cov nyhuv ntawm foaming tsis nyob rau hauv evolution tus cwj pwm ntawm cov hlwb nyob rau hauv lub core txheej ntawm lub sandwich vaj huam sib luag nyob rau hauv lub npaj txheej txheem ntawm sheath dov. Cov kev tshawb fawb saum toj no yog tag nrho raws li kev tshawb fawb ntawm aluminium alloy hmoov, thaum Wang Yaoqi li al. siv txhuas phaj ua cov foaming matrix thiab siv cov txheej txheem stacking los npaj cov foamed preform. Cov txheej txheem tshwj xeeb yog kis tus neeg sawv cev foaming TiH2 hmoov sib npaug ntawm plaub txheej ntawm txhuas daim hlau, thiab tom qab ntawd superimpose thiab dov cov ntawv txhuas ntawm 350 degree rau 2 dhau los ua ib qho preform ntawm foamed aluminium, thiab ces TC4 titanium alloy vaj huam sib luag los yog 1Cr18Ni9Ti Cov vaj huam sib luag stainless hlau tau muab tso rau ntawm ob sab ntawm foamed aluminium preform, thiab tom qab ntawd dov thiab laminated ntawm 450 degree C kom tau ib lub vaj huam sib luag sandwich, thiab tom qab ntawd foamed nyob rau hauv ib qho hluav taws xob tiv thaiv kom tau ib tug foamed aluminium sandwich vaj huam sib luag.

1.3 Lwm txoj kev Zhang Taikang et al. Siv Al2o3 Lub Zog Hollow nrog lub zog siab thiab ntom ntom ntom nti - thiab txhuas alloy phaj, npaj los ntawm kev thim rov qab shrepage casting txoj kev tawm ntawm ua npuas ncauj aluminium sandwich vaj huam sib luag. Cov txiaj ntsig tau pom tias cov khoom siv tseem ceeb thiab cov vaj huam sib luag aluminium alloy ua tiav ib qho zoo metallurgical daim ntawv cog lus.

2. Daim ntawv thov ntawm foam aluminium sandwich vaj huam sib luag hauv tsev tawg-pov thawj

Lub foamed aluminium sandwich vaj huam sib luag tuaj yeem nqus tau lub zog los ntawm cov yas deformation nyob rau hauv tawg lossis muaj zog cuam tshuam. Piv nrog rau ib txheej boards, nws muaj ntau dua quasi-static zog thiab ntau dua los tiv thaiv kev tawg. Nyob rau hauv xyoo tas los no, vim muaj kev nce hauv kev tawg thiab kev tawm tsam kev ua phem, ua npuas ncauj aluminium sandwich panels tau maj mam nyiam cov kev kawm hauv zej zog raws li cov khoom tawg-pov thawj hauv tsev. , nws cov kev ua haujlwm los tiv thaiv kev ua haujlwm kuj tau dhau los ua qhov kev tshawb fawb hotspot.

2.1 Daim ntawv thov kev tshawb fawb hauv tsev tawg-pov thawj

Shi Shaoqing thiab lwm tus ntseeg tias cov txheej txheem sib xyaw ua ke ntawm cov hlau ua npuas dej thiab txhuas muaj cov nyhuv tawg zoo dua li ib qho txhuas ua npuas ncauj, thiab tuaj yeem siv rau kev tawg-pov thawj tsim ntawm cov tub rog cov tsev. Kang Jiangong et al. siv tib cov khoom siv ua npuas ncauj aluminium los sib piv cov teebmeem ntawm kev lag luam ntshiab txhuas vaj huam sib luag thiab 304 stainless hlau panels ntawm kev tiv thaiv tawg ua haujlwm ntawm foam aluminium sandwich beams los ntawm cov lej simulation. Cov txiaj ntsig tau pom tias ua npuas ncauj aluminium sandwich beam ua los ntawm kev lag luam ntshiab txhuas vaj huam sib luag muaj kev ua tau zoo dua tawg-pov thawj hauv kev cuam tshuam tawg. Rau lub hauv paus no, Sui Shunbin et al. tshawb xyuas qhov kev ua tau zoo ntawm kev tawg ntawm txhuas ua npuas ncauj sandwich beams ua los ntawm HRB335 steel daim hlau. Piv nrog cov ntshiab txhuas daim hlau thiab 304 stainless hlau daim hlau, qhov nruab nrab ntawm kev xaav thiab cov khoom tseem ceeb compressive strain yog tag nrho peb. qhov tsawg tshaj plaws. Fu Xueran thiab lwm tus tau kawm txog kev tiv thaiv kev ua haujlwm ntawm cov pa roj carbon fiber ntau thiab ua npuas dej txhuas tiv thaiv txheej dav siv hauv kev tiv thaiv lub tsev. Cov txiaj ntsig tau pom tias cov txiaj ntsig tawg ntawm cov foamed aluminium tiv thaiv txheej yog ntau dua li ntawm cov ntaub ntawv carbon fiber, thiab cov khoom siv aluminium foamed yuav tsum nyiam nyob rau hauv kev tsim tawg-pov thawj. Raws li kev tiv thaiv kev tawg ntawm cov npuas npuas aluminium sandwich vaj huam sib luag, Zhang Dongxin tau thov kom sau qhov nruab nrab ntawm cov phaj sab nrauv nrog ua npuas ncauj aluminium ua ntej thiab tom qab lub qhov rooj los ua ib hom tshiab ntawm lub qhov rooj tiv thaiv, thiab siv ANSYS / LS-DYNA. txhawm rau txheeb xyuas qhov cuam tshuam tawg-pov thawj ntawm lub qhov rooj tiv thaiv.

Cov txiaj ntsig tau pom tias hom tshiab ntawm kev tiv thaiv lub qhov rooj muaj qhov ua tau zoo ntawm kev ua kom zoo rau lub blast shock yoj thiab tuaj yeem ua lub luag haujlwm tiv thaiv.

2.2 Teeb meem hauv kev thov

Ua npuas ncauj aluminium sandwich vaj huam sib luag muaj kev ua haujlwm tawg tau zoo heev, tab sis nws tseem siv tsawg dua hauv tsev tawg-pov thawj. Cov laj thawj tseem ceeb yog ob yam hauv qab no: Ua ntej, cov khoom siv ua npuas ncauj aluminium sandwich vaj huam sib luag tam sim no tseem nyob rau theem kev tshawb fawb, thiab tsis muaj kev lag luam ntau dua. Tus nqi tsim khoom ntawm aluminium npuas nws tus kheej yog qhov siab, thiab lub vaj huam sib luag sandwich yuav tsum tau nce tus nqi ntawm nws lub hauv paus, uas txwv tsis pub siv cov khoom siv ntawm lub vaj huam sib luag sandwich; Tsis tas li ntawd, qhov tawg-pov thawj mechanism ntawm lub npuas aluminium sandwich vaj huam sib luag tsis meej kiag li. Qhov kev sib raug zoo ntawm cov microstructure ntawm cov khoom siv phaj thiab cov macroscopic morphology tsis tau tsim, thiab cov lus teb ntawm cov sandwich phaj nyob rau hauv dynamic loading tseem tsis meej. Nyob rau hauv qhov kev pom ntawm cov laj thawj saum toj no, daim ntawv thov ntawm cov sandwich panels hauv kev xyaum ntawm lub tsev tawg-pov thawj engineering tseem muaj txoj hauv kev mus ntev.

3. Cov ntsiab lus thiab Outlook

(1) Kev sib txuas ua ke raws li cov khoom lag luam aluminium muaj xws li gluing thiab vuam. Txoj kev sib khi muaj cov txheej txheem yooj yim, tab sis muaj kev sib txuas tsis zoo thiab kev kub siab ua haujlwm; txoj kev vuam tuaj yeem paub txog kev sib xyaw ua ke ntawm metallurgical ntawm foamed aluminium thiab vaj huam sib luag, thiab txhim kho lub zog sib cuam tshuam thiab kub ua haujlwm. Ntawm lawv, qhov teeb meem tseem ceeb ntawm txoj kev brazing yog xaiv cov khoom siv brazing thiab cov txheej txheem ntawm kev tshem tawm oxide zaj duab xis rau saum npoo ntawm foamed aluminium. Tam sim no, ntau yam kev tshawb fawb hauv tsev tau ua tiav hauv cheeb tsam no. Laser welding kuj tau kawm nyob rau Fabkis, tab sis nws tseem nyob rau theem tshawb nrhiav.

(2) Txoj kev foaming yog ib txoj kev npaj nyob rau hauv uas lub vaj huam sib luag thiab cov khoom foamed tau ua rau hauv preforms thiab tom qab ntawd raug rau foaming kho; Raws li cov aluminium alloy thiab foaming tus neeg sawv cev hmoov, nws yog hu ua rolling composite txoj kev, thiab ces cov foaming kev kho mob yog nqa tawm. Raws li cov hmoov hlau metallurgy txoj kev wrapping dov, cov txheej txheem dov yog ua raws li cov ntawv txhuas; Tsis tas li ntawd, qee cov kws tshawb fawb siv txoj kev seepage casting los npaj sandwich panels. Nrog rau kev kawm tob ntawm ntau yam kev npaj, cov txheej txheem tsim nyog rau kev lag luam loj loj yuav tshwm sim.

(3) Foamed aluminium sandwich vaj huam sib luag yog cov khoom siv hluav taws xob tawg, uas tuaj yeem siv los tiv thaiv qhov tseem ceeb xws li kev txhawb nqa kab, kab teeb, thiab qhov rooj hauv tsev. Vim tias cov nqi tsim khoom siab ntawm cov ntaub ntawv aluminium sandwich vaj huam sib luag thiab cov txheej txheem tawg-pov thawj yuav tsum tau kawm, tam sim no daim ntawv thov ntawm sandwich panels hauv tsev tawg-pov thawj tseem nyob rau theem tshawb fawb. Nyob rau hauv lub neej yav tom ntej, nrog rau txoj kev loj hlob ntawm kev npaj technology ntawm foamed aluminium sandwich panels thiab cov kev tshawb fawb nyob rau hauv-tob ntawm lub explosion-proof mechanism, nws yuav muaj kev cia siab nyob rau hauv daim ntawv thov ntawm lub tsev tawg-pov thawj.