Txoj kev tsim khoom (8) - Compression Molding
Cov pa roj carbon fiber ntau yog siv dav hauv aerospace, infrastructure, electromagnetic shielding, tsheb tsim, roj siv thiab lwm yam kev lag luam vim nws qhov zoo ntawm kev qaug zog, kub tsis kam, siab zog, siab modulus, conductivity, hluav taws xob tsis kam, me me coefficient ntawm thermal expansion, Lub teeb yuag, thiab lwm yam. Nws muaj qhov hloov pauv tau yooj yim hauv kev tsim thiab tuaj yeem tsim los ntawm ntau txoj kev tsim khoom, suav nrog winding, extrusion, txhaj tshuaj, tes layup, thiab molding. Hauv qab no yog yuav qhia koj cov ntsiab lus ntxiv txog ib qho ntawm cov khoom siv ntau tshaj plaws ntawm cov khoom siv fiber ntau - Compression Molding.
Cov kauj ruam ntawm compression molding ntau lawm txoj kev:
1. Embedded Inserts Placement (yog tias muaj)
Embedded qhov chaw feem ntau yog ua los ntawm cov hlau thiab tuaj yeem txhim kho cov khoom siv kho tshuab, xws li cov khoom siv hluav taws xob, thermal conductivity, lossis lwm yam kev ua haujlwm.
Nws yog qhov zoo tshaj rau preheat qhov ntxig ua ntej muab tso rau hauv thiab cov ntxig ntxig yuav tsum muab tso rau kom raug thiab ruaj khov kom tsis txhob txav los yog tshem tawm. Txwv tsis pub, lub hom phiaj ntawm kev siv cov ntxig tsis tuaj yeem ua tiav, thiab nws tuaj yeem ua rau cov khoom seem thiab txawm tias puas rau pwm.
2. Cov ntaub ntawv tso
Cov khoom nteg cuam tshuam qhov loj thiab qhov ntom ntawm cov khoom, thiab yog li cov khoom yuav tsum nruj me ntsis ntsuas ua ntej muab tso rau hauv pwm los ntawm qhov hnyav txoj kev, volumetric method thiab suav txoj kev.
Txoj kev hnyav yog qhov tseeb tab sis clumsy thiab feem ntau yog siv rau cov ntaub ntawv fragmented thiab fibrous. Txoj kev ntim ntim tsis yog qhov tseeb raws li qhov hnyav, tab sis nws yooj yim rau kev khiav lag luam thiab feem ntau yog siv rau kev ntsuas hmoov. Txoj kev suav tsuas yog siv rau prepreg nteg.
3. Pwm kaw
Pwm kaw muaj 2 kauj ruam:
1) ua ntej tus txiv neej pwm hu rau cov ntaub ntawv: tsis tshua muaj siab (1-5-3.0MPa) yog siv los ua kom lub voj voog luv thiab tsis txhob hloov cov khoom siv.
2) tom qab tus txiv neej pwm hu rau cov ntaub ntawv: pwm kaw ceev yuav tsum tau qeeb, thiab kev kub siab (15-30MPa) yuav tsum tau siv maj mam kom tsis txhob ua rau cov ntxig thiab ua rau huab cua tawm ntawm cov pwm.
4. Kev kho
Cov txheej txheem ntawm cov khoom hloov pauv los ntawm lub xeev cov dej mus rau ib qho nyuaj, insoluble lub xeev hu ua solidification ntawm thermosetting resins. Tus nqi ntawm kev kho yog nyob ntawm tus nqi ntawm qhov uas tsis tshua muaj molecular hnyav Cheebtsam nyob rau hauv resin hloov mus rau hauv siab molecular hnyav khoom, uas yog, tus nqi curing muaj feem xyuam rau cov qauv molecular ntawm cov resin.
5. Kev ceev ceev
Cov txheej txheem ntawm resin curing hauv pwm yog ib txwm nyob rau hauv qhov kub thiab txias, thiab lub sij hawm tswj lub siab yog qhov tseem ceeb ntawm lub sij hawm tswj qhov kub thiab txias, uas yog tag nrho raws li tus nqi kho. Yog hais tias lub sij hawm tswj lub siab luv luv, lub ntsiab lus ntawm kev ua kom txias ua ntej thiab txo qhov siab uas tuaj yeem ua rau tsis tiav resin curing, txo cov khoom siv hluav taws xob thiab hluav taws xob nrog rau cov khoom siv hluav taws xob. Nyob rau tib lub sijhawm, cov khoom lag luam yuav txuas ntxiv zuj zus thiab muaj kev cuam tshuam tom qab demolding.
6. Demolding
Cov khoom uas tsim cov pas nrig lossis qee qhov chaw kos yuav tsum xub muab unscrewed nrog cov cuab yeej tshwj xeeb ua ntej demolding.
8. Pwm ntxuav
Nws yog ib qho tsim nyog los ntxuav cov pwm tom qab txhua qhov tsim tawm kom tsis txhob muaj cov khoom seem hauv pwm. Tom qab ntxuav, tso tus neeg sawv cev tuaj yeem thov rau kev molding tom ntej.
Lub ntsiab zoo ntawm kev siv compression molding rau cov khoom siv fiber ntau:
1. High efficiency efficiency, yooj yim mus cuag tshwj xeeb thiab automated ntau lawm
2. Cov khoom muaj qhov siab qhov tseeb thiab rov ua tau zoo
3. Qhov saum npoo yog du thiab tsis xav tau ntau cov txheej txheem tom qab
4. Muaj peev xwm tsim cov khoom siv nrog cov txheej txheem nyuaj hauv ib qho mus
5. Tus nqi qis rau kev tsim khoom loj
Disadvantages ntawm carbon fiber composite khoom molding:
1. Pwm ua yog complex thiab peev yog siab
2. Tsuas yog haum rau cov khoom me me thiab nruab nrab cov khoom sib xyaw vim qhov hnyav pwm hnyav
Nrog rau kev txhim kho thiab kev loj hlob ntawm cov hlau ua tshuab, xovxwm tsim theem, thiab cov txheej txheem hluavtaws hluavtaws, lub tonnage thiab lub rooj loj ntawm cov xovxwm txuas ntxiv mus, thiab molding kub thiab siab ntawm cov khoom molding kuj raug txo, ua rau. maj mam txhim kho ntawm cov khoom loj loj molded.
Thaum lub sij hawm molding txheej txheem, tshwj xeeb yuav tsum tau them rau peb yam kub, siab, thiab lub sij hawm. Qhov kub thiab txias muaj qhov cuam tshuam rau qhov melting, ntws, thiab solidification ntawm cov ntaub ntawv; Kev kub siab tuaj yeem ua rau cov khaubncaws sab nraud povtseg ntawm carbon fiber ntau prepreg daim ntawv nruj dua; Lub sijhawm tuaj yeem tso sijhawm txaus rau cov khoom hauv pwm kab noj hniav kom khov.
