Lub hauv paus ntsiab lus ntawm Compression Pwm tsim

Compression molding ntawm cov khoom sib xyaw thermosettingLub hauv paus ntsiab lus ntawm kev tsim tshuab, suav nrog cov khoom sib txawv thiab cov txheej txheem tsim khoom tiag tiag, tuaj yeem muab faib ua peb ntu: cov txheej txheem tseem ceeb, cov ntsiab lus ntawm cov khoom sib txawv, thiab cov txheej txheem tseem ceeb. Cov ntsiab lus yog raws li nram no:

I. Cov Ntsiab Lus Tseem Ceeb (tseem siv tau rau txhua hom Moulded)

Lub essence ntawm molding yog "Model kab noj hniav txwv + thermal pressing synergy + cov ntaub ntawv transformation", Cov txheej txheem tshwj xeeb ntawm cov ntsiab lus tseem ceeb yog:

1. Pre-kev kho mob: Cov ntaub ntawv tsim (hmoov, granules, ntawv-xws li, agglomerated, thiab lwm yam) yog ua ntej- ua tiav (xws li ziab, preheating) kom tshem tawm cov dej noo thiab impurities ntawm cov ntaub ntawv, los yog soften cov ntaub ntawv ua ntej los npaj rau tom ntej filling.

2. Chaw thau khoom: Muab cov khoom ua ntej- kho cov khoom sib npaug rau hauv kab noj hniav (cov kab noj hniav zoo ib yam li cov khoom kawg, suav nrog cov qauv ntxaws, qhov, thiab lwm yam). Tswj cov khoom ntim kom tsis txhob muaj qhov ntim ntau dhau uas ua rau cov khoom dhau los, lossis tsis txaus filling uas ua rau tsis txaus.

3. Pwm kaw thiab siab daim ntawv thov: Kaw cov pwm thiab siv lub siab (feem ntau yog li ntawm ob peb kaum mus rau ob peb puas MPa) siv lub tshuab xovxwm. Nyob rau hauv lub siab, cov ntaub ntawv maj mam sau txhua lub ces kaum ntawm cov kab noj hniav thiab tshem tawm cov huab cua nyob rau hauv lub kab noj hniav, kom ib tug zoo meej haum ntawm cov khoom thiab cov kab noj hniav.

4. Qhov kub thiab txias Stabilization: Nyob ntawm cov khoom siv, pwm kub tswj tau (xws li chav tsev kub mus rau ntau pua degrees Celsius). Raws li kev sib xyaw ua ke ntawm "siab thiab kub", cov khoom siv hloov pauv lub cev lossis tshuaj lom neeg, ua kom ruaj khov - cua txias thiab khov kho lossis hla - txuas thiab kho, ua rau cov khoom ruaj khov.

5. Demolding thiab tshem tawm: Thaum cov khoom tiav lawm, tshem tawm lub siab, qhib pwm, thiab tshem tawm cov khoom tsim. Yog tias tsim nyog, ua cov txheej txheem tom ntej xws li trimming thiab polishing.

II. Cov ntsiab lus nthuav dav los ntawm Cov Khoom Siv (Key Differences)

Qhov sib txawv tseem ceeb hauv cov txheej txheem molding ntawm ntau yam khoom siv nyob rau hauv "cov ntaub ntawv hloov pauv thaum lub sijhawm teeb tsa". Cov ntsiab lus yog raws li nram no:

1. Moulding ntawm cov khoom siv thermosetting composite (xws li phenolic resin, epoxy resin): Lub hauv paus ntsiab lus: Ua kom sov cov pwm rau qhov kub thiab txias ntawm cov resin. Cov khoom ntim cov kab noj hniav nyob rau hauv lub siab thiab dhau los ua tus ntoo khaub lig- txuas cov tshuaj tiv thaiv (tshuaj lom neeg hloov pauv) thaum cov resin ua insoluble thiab tsis yog-meltable, hloov los ntawm lub xeev yas mus rau lub xeev ruaj khov; Nws yog ib qho tsim nyog los tswj qhov kub thiab txias rau ib lub sij hawm los xyuas kom meej qhov ua tiav ntawm tus ntoo khaub lig- txuas cov tshuaj tiv thaiv thiab tiv thaiv npuas thiab tawg hauv cov khoom. Tom qab kev kho tiav, cov pwm raug tshem tawm.

2. Rubber molding (xws li cov roj hmab ntuj, hluavtaws roj hmab): Lub hauv paus ntsiab lus: Muab cov roj hmab sib xyaw (muaj cov roj hmab, vulcanizing tus neeg sawv cev, thiab lwm yam) rau hauv cov pwm, ua kom sov rau qhov kub ntawm vulcanization, thiab ib txhij siv lub siab tso cai rau cov roj hmab sib xyaw kom puv cov kab noj hniav; tus neeg sawv cev vulcanizing pib tus ntoo khaub lig- txuas ntawm cov roj hmab molecules, tsim kom muaj qhov ruaj khov peb- cov qauv sib txuas. Cov roj hmab hloov los ntawm lub cev elastic mus rau cov khoom siv roj hmab tsim. Tom qab vulcanization tiav, cov pwm raug tshem tawm (qhov tseem ceeb ntawm cov txheej txheem no yog cov tshuaj hloov pauv ntawm "vulcanization cross- txuas").

3. Cov khoom siv sib xyaw ua ke (xws li fiber ntau- cov yas siv dag zog FRP): Lub hauv paus ntsiab lus: Sib xyaw fiber ntau- cov ntaub ntawv siv zog (xws li iav fibers, carbon fibers, thiab lwm yam) nrog cov matrix resin, muab lawv tso rau hauv pwm, thiab nyob rau hauv tej yam kub thiab siab tej yam kev mob, cov resin melts los yog solidifies, thaum lub fibers muab cov khoom sib xyaw ua ke, sib xyaw ua ke ntawm cov khoom sib xyaw ua ke. ntawm fibers thiab toughness ntawm resin; Thaum lub sij hawm molding txheej txheem, lub siab thiab kub yuav tsum tau tswj xyuas kom meej tias cov resin nkag mus rau hauv fibers thiab tsis txhob muaj fiber ntau agglomeration thiab resin voids.

III. Cov ntsiab cai tseem ceeb ntawm kev txhawb nqa (Txhim kho pwm tsim kom zoo)

1. Lub hauv paus ntsiab lus ntawm exhaust: Thaum lub sij hawm molding txheej txheem, thaum cov khoom nyob rau hauv lub pwm kab noj hniav, nws yuav tshem tawm cov huab cua nyob rau hauv cov kab noj hniav thiab cov gases emitted los ntawm cov khoom nws tus kheej. Yog tias qhov tso pa tawm tsis txaus, nws yuav ua rau muaj qhov tsis xws luag xws li npuas thiab kev nyuaj siab hauv cov khoom. Yog li ntawd, cov pwm feem ntau muaj cov grooves tsim, los yog lawv siv segmented siab daim ntawv thov los pab nyob rau hauv pa.

2. Lub hauv paus ntsiab lus ntawm kev sib kis: Lub siab los ntawm lub tshuab molding yog kis los ntawm cov pwm kab noj hniav mus rau cov khoom, xyuas kom meej tias cov khoom yog uniformly raug quab yuam. Qhov no tiv thaiv kev tsis sib xws hauv qee qhov chaw lossis ntau dhau compression, uas tuaj yeem ua rau cov khoom tsis sib xws thiab cov npoo tsis tiav lossis cov fab.

3. Txoj Cai Tswjhwm Kub Kub: Los ntawm cov cua sov / cua txias ntawm pwm, qhov kub ntawm txhua qhov ntawm cov kab noj hniav raug tswj kom nruj kom tsis txhob muaj qhov kub thiab txias hauv qee qhov chaw uas tuaj yeem ua rau cov khoom decomposition lossis carbonization, lossis kub tsis txaus nyob rau lwm qhov chaw uas tuaj yeem ua rau tsis tiav shaping thiab nyuaj rau demolding.

IV. Xaus

Lub tshuab molding zoo tau kov yeej tus nqi thiab kev ua haujlwm tsis zoo hauv qhov loj - daim ntawv thov ntawm cov khoom siv thermosetting molds los ntawm kev hloov tshiab hauv peb qhov tseem ceeb ntawm kev tswj kub, siab, thiab automation. Nws tau ua tiav lub hom phiaj ntawm "kev ua haujlwm siab, ua haujlwm siab, thiab tus nqi qis". Kev nce qib thiab kev siv cov thev naus laus zis no tsis yog tsuas yog txhawb nqa qhov loj -ntau qhov nrov ntawm cov khoom siv thermosetting sib xyaw hauv thaj chaw xws li tsheb, tsheb thauj mus los, thiab lub zog tshiab, tab sis kuj tseem pab cov kev lag luam cuam tshuam txog kev sib tw thiab kev hloov kho ntsuab. Nrog rau kev sib koom ua ke thiab kev txhim kho ntawm kev txawj ntse thiab ntau- cov thev naus laus zis ua haujlwm, cov tshuab molding ua haujlwm tau zoo yuav txuas ntxiv mus ua cov kev hloov pauv ntawm cov khoom siv thermoplastic composite pwm kev lag luam, muab kev txhawb nqa tseem ceeb rau siab - txoj kev loj hlob zoo ntawm kev lag luam.