Extrusion Technology ntawm Aluminium Heat Sink Profile

 

 

Aluminium alloy yog dav siv nyob rau hauv cov khoom cua kub dissipation vim nws lub teeb yuag, zoo nkauj tsos, zoo thermal conductivity, thiab yooj yim ua rau hauv complex duab. Muaj peb yam tseem ceeb ntawm aluminium alloy txias khoom: tiaj thiab dav, zuag-puab lossis herringbone-puab; sab nraud radially ncig los yog oval; dendritic. Lawv cov yam ntxwv zoo ib yam yog: qhov sib txawv ntawm lub dab dej luv luv, cov grooves tsim ntawm cov dab dej kub uas nyob ib sab, qhov sib piv loj, cov phab ntsa loj sib txawv, nyias cov dab dej kub, thiab cov hauv paus hauv qab phaj tuab. Yog li ntawd, kev tsim thiab tsim cov cua kub dissipation profile pwm yog qhov nyuaj heev.

 

Qee cov dab dej kub uas muaj qhov me me thiab cov duab sib luag yog qhov yooj yim rau kev ua. Cov dab dej kub feem ntau yog tiaj tus, dav, thiab loj hauv cov duab thiab loj. Txhawm rau tsim cov dab dej kub kom zoo, nws yog ib qho tsim nyog yuav tsum koom tes hauv cov khoom xws li ingot casting, pwm, thiab txheej txheem extrusion. Alloys siv rau extruded tshav kub dab dej profiles yuav tsum muaj zoo extrudability thiab thermal conductivity. Feem ntau siv cov alloys yog 1A30, 1035 thiab 6063. Cov 6063 alloy tsis tsuas yog muaj kev ua haujlwm zoo extrusion thiab thermal conductivity, tab sis kuj muaj cov khoom siv zoo, thiab tam sim no siv dav.

Kev tsim cov aluminium alloy kub dab dej profiles yuav tsum pib los ntawm qhov zoo ntawm lub ingot, cov khoom siv thiab tsim pwm, txo cov extrusion siab thiab cov txheej txheem extrusion.

 

 

 

Lub alloy muaj pes tsawg leeg ntawm cov hlau ingot yuav tsum nruj me ntsis tswj cov impurity cov ntsiab lus los xyuas kom meej lub siab purity ntawm cov alloy. 6063 alloy yuav tsum tswj cov ntsiab lus ntawm Fe, Mg thiab Si. Cov ntsiab lus ntawm cov hlau yuav tsum tau tswj hauv qab no 0.2 feem pua, cov ntsiab lus ntawm magnesium thiab silicon yuav tsum tau tswj nyob rau hauv qis qis ntawm lub teb chaws tus qauv, cov ntsiab lus ntawm magnesium yog 0.45 feem pua ​​{{ 5}}.55 feem pua ​​, thiab cov ntsiab lus ntawm silicon yog 0.25 feem pua ​​-0.35 feem pua ​​. Txhawm rau ua kom cov qauv thiab kev ua haujlwm ntawm ingot uniform, lub ingot yuav tsum tau ua kom tiav homogenized.

Qhov saum npoo ntawm cov hlau ingot yuav tsum du thiab tiaj tus, thiab nws yuav tsum tau txiav mus rau hauv cov kauj ruam los yog lub kaum sab xis yog loj heev (lub kaum sab xis txiav yuav tsum tsawg dua 3). Vim hais tias cov kauj ruam zoo los yog lub kaum sab xis yog loj heev, thaum extruding lub tshav kub dissipation profile nrog ib tug ca tuag, yog hais tias tus khiav qhia tsis tsim, lub ingot ncaj qha hu rau cov tuag, thiab vim lub uneven kawg lub ntsej muag ntawm lub steel ingot, qee qhov chaw hu rau tus tuag ua ntej, ua rau muaj kev ntxhov siab ntau. Nws yog ib qho yooj yim uas yuav ua rau lub puab tsaig ntawm cov pwm tawg, los yog ua rau lub unloading sib lawv liag txawv, thiab nws yog ib qho yooj yim ua rau pwm blockage los yog tsis zoo extrusion.

 

Txij li cov pwm ntawm lub dab dej kub profile muaj ntau lub fins, lawv yuav tsum tau dais ntau ntawm extrusion siab, thiab txhua tus fin yuav tsum muaj lub zog siab thiab toughness. Yog hais tias lawv txawv heev ntawm kev ua tau zoo, nws yog ib qho yooj yim kom muaj fin nrog tsawg zog thiab toughness. Yog li ntawd, qhov zoo ntawm cov hlau tuag yuav tsum txhim khu kev qha. Nws yog qhov zoo dua los siv H13 steel tsim los ntawm cov chaw tsim khoom, lossis xaiv cov hlau zoo tuaj. Kev kho cua sov ntawm pwm yog qhov tseem ceeb heev. Nws yog ib qho tsim nyog yuav tau txais lub tshuab nqus tsev cua sov quenching thiab high-pressure ntshiab nitrogen quenching kom ntseeg tau tias qhov kev ua tau zoo ntawm txhua qhov ntawm cov pwm tom qab quenching. Tom qab quenching, nyob rau hauv lub premise ntawm HRC 48-52, cov pwm yog tempered peb zaug kom paub meej tias lub hardness ntawm pwm muaj txaus toughness. Qhov no yog ib qho tseem ceeb rau kev tiv thaiv pwm los ntawm kev tawg fins.

Yuav kom ua tiav extrude lub dab dej kub, qhov tseem ceeb yog qhov tsim pwm yuav tsum tsim nyog thiab kev tsim khoom yuav tsum raug. Feem ntau, sim kom tsis txhob ncaj qha extrusion ntawm steel ingots rau hauv txoj siv sia ua haujlwm ntawm pwm. Rau lub tiaj tus dav-comb tshav kub dab dej profile, ib tug diversion tuag nrog ib tug me me nruab nrab thiab ib tug loj sab yog tsim los ua kom cov hlau ntws mus rau ob sab, txo cov extrusion siab ntawm txoj siv sia ua hauj lwm ntawm cov tuag, thiab ua rau lub siab faib txawm. . Vim qhov sib txawv loj ntawm cov phab ntsa thickness ntawm cov dab dej kub, thaum tsim txoj siv sia ua haujlwm ntawm cov pwm, qhov sib txawv ntawm ob yuav tsum tau khaws cia, uas yog, nyob rau hauv rooj plaub ntawm phab ntsa loj, txoj siv sia ua haujlwm yuav tsum yog. tshwj xeeb tshaj yog dav, mus txog 20mm / 30mm, fins Qhov taw qhia txoj hauj lwm yuav tsum ua txhaum txoj cai. Txo txoj siv sia ua haujlwm kom tsawg dua. Nyob rau hauv luv luv, nws yog ib qhov tsim nyog los xyuas kom meej tias cov ntws ntawm cov hlau yog uniform nyob txhua qhov chaw. Rau qhov dav thiab tiaj tus tshav kub dab dej, txhawm rau kom ntseeg tau tias cov pwm muaj qee yam rigidity, lub thickness ntawm pwm yuav tsum tau nce kom tsim nyog. Qhov nce hauv thickness yog li 30 feem pua ​​thiab 60 feem pua. Kev tsim cov pwm yuav tsum zoo heev. Cov riam khoob yuav tsum sib npaug ntawm qhov nce thiab nqis, sab laug thiab sab xis, thiab hauv nruab nrab. Lub machining yuam kev ntawm cov fins yuav tsum tsawg tshaj li 0.05 hli, thiab machining yuam kev yog ib qho yooj yim los tsim ib feem fins, uas yog, lub thickness ntawm lub dab dej kub yog tsis sib xws. Tej zaum yuav muaj qhov tawg. Txij li cov hlau alloy hlau pwm muaj qhov zoo rigidity thiab hnav tsis kam, nws tsis yooj yim rau deform, uas yog qhov zoo rau kev tsim cov dab dej kub, yog li nws kuj yog ib txoj hauv kev zoo los siv ib qho inlaid alloy steel pwm rau ntawm seem tsim zoo. .

 

Txhawm rau tiv thaiv pwm los ntawm kev tawg, lub siab extrusion yuav tsum raug txo kom ntau li ntau tau. Lub siab extrusion muaj feem xyuam rau qhov ntev ntawm lub ingot, lub deformation kuj ntawm lub alloy, lub xeev ntawm lub ingot thiab degree ntawm deformation. Yog li ntawd, tus pas nrig casting siv rau extruding thiab txias cov aluminium profile yuav tsum tsis txhob ntev dhau, txog {{0}}}.6 ntawm qhov ntev ntawm qhov zoo tib yam casting pas nrig. -0.85 x. Tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv ntawm kev kuaj pwm thiab extrusion nyob ze rau pem hauv ntej lub hauv paus casting pas nrig, thiaj li yuav ua kom cov khoom du ntawm cov khoom tsim nyog, nws yog qhov zoo dua los siv ib tug luv luv casting pas nrig, uas yog, ib tug casting pas nrig uas nws ntev yog ob zaug ntev dua. raws li qhov zoo tib yam casting pas nrig (0.4-0.6). Rau cov cua kub dissipation profiles nrog cov duab nyuaj, ntxiv rau kom luv luv ntawm qhov ntev ntawm cov cam khwb cia, cov txheej txheem ntshiab txhuas luv luv kuj tuaj yeem siv rau kev sim ua ntej extrusion. Tom qab kev sim extrusion ua tiav, cov khoom siv zoo tib yam tuaj yeem siv rau kev tsim khoom extrusion. Ingot homogenization annealing tuaj yeem tsis tsuas yog ua kom cov qauv thiab cov khoom sib xws, tab sis kuj txhim kho kev ua haujlwm ntawm extrusion thiab txo extrusion siab, yog li nws yog ib qho tsim nyog los ua homogenization annealing ntawm ingots. Rau qhov cuam tshuam ntawm cov degree ntawm deformation, txij li qhov chaw hla ntawm qhov chaw ntawm lub dab dej kub yog feem ntau loj thiab extrusion coefficient feem ntau tsawg dua 40, lub zog yog me me.