Kev txhaj tshuaj molding, yooj yim hais, yog txheej txheem ntawm kev siv cov khoom siv hlau los tsim cov kab noj hniav hauv cov duab ntawm ib feem, siv lub zog rau cov kua dej yas los txhaj rau hauv cov kab noj hniav thiab tswj lub siab rau ib lub sijhawm, thiab tom qab ntawd ua kom txias. yas yaj thiab tshem tawm qhov ua tiav. Niaj hnub no, cia peb tham txog ntau yam txheej txheem molding.
1. Ua npuas ncauj
Foam molding yog ib txoj kev ua haujlwm uas tsim cov qauv ntxeem tau hauv cov yas los ntawm kev siv lub cev lossis tshuaj.
Txheej txheem:
ib. Pub: Sau cov pwm nrog cov khoom siv raw kom foamed.
b. Clamping cua sov: Cua sov softens cov khoom, vaporizes tus neeg sawv cev foaming nyob rau hauv lub hlwb, thiab tso cai rau lub cua sov nruab nrab nkag mus rau ntxiv nthuav cov ntaub ntawv raw. Lub molding yog txwv los ntawm cov pwm kab noj hniav. Cov khoom siv nthuav dav ua rau tag nrho cov pwm kab noj hniav thiab daim ntawv cog lus tag nrho.
c. Cooling molding: Cia cov khoom txias thiab demould.
Qhov zoo:Cov khoom muaj cov thermal rwb thaiv tsev zoo thiab muaj kev cuam tshuam zoo.
Qhov tsis zoo:Radial flow marks tau yooj yim tsim nyob rau pem hauv ntej ntawm cov khoom ntws. Txawm hais tias nws yog tshuaj foaming lossis micro-foaming, muaj cov cim dawb radial txaus. Qhov zoo ntawm qhov chaw yog qhov tsis zoo, thiab nws tsis haum rau qhov chaw uas muaj qhov zoo ntawm qhov chaw.
2. Casting
Kuj hu uakev txhaj tshuaj molding, cov txheej txheem uas cov kua resin raw khoom sib xyaw polymer yog muab tso rau hauv pwm kom hnov mob thiab solidify nyob rau hauv ib txwm siab los yog ib puag ncig siab me ntsis. Nylon monomers thiab polyamides Nrog kev nce qib ntawm thev naus laus zis, lub tswv yim ntawm cov tsoos casting tau hloov pauv, thiab cov kev daws teeb meem ntawm polymer thiab dispersions suav nrog PVC pastes thiab cov kev daws teeb meem kuj tuaj yeem siv rau casting.
Cast molding yog thawj zaug siv rau thermosetting resins thiab tom qab ntawd rau cov ntaub ntawv thermoplastic.
Txheej txheem:
ib. Kev npaj pwm: Qee qhov yuav tsum tau preheated. Ntxuav cov pwm, ua ntej thov pwm tso tawm yog tias tsim nyog, thiab ua ntej kub pwm.
b. Configure lub casting kua: Sib tov cov yas raw khoom, curing agent, catalyst, thiab lwm yam., tso pa tawm thiab muab tso rau hauv pwm.
c. Casting thiab curing: Cov khoom siv raw yog polymerized thiab kho hauv pwm los ua cov khoom. Cov txheej txheem hardening yog ua tiav nyob rau hauv ib txwm kub siab.
d. Demoulding: Demoulding tom qab kho tiav.
Qhov zoo:Cov cuab yeej siv tau yooj yim thiab tsis tas yuav tsum muaj lub siab; cov kev xav tau rau lub zog ntawm pwm tsis siab; cov khoom tsis sib xws thiab cov kev ntxhov siab sab hauv yog tsawg; qhov loj ntawm cov khoom yog txwv tsawg, thiab cov khoom siv siab yog yooj yim; pwm lub zog yuav tsum muaj tsawg; Lub workpiece yog ib yam thiab cov kev ntxhov siab sab hauv yog tsawg, Workpiece loj txwv yog me me thiab tsis tas yuav tsum muaj cov cuab yeej pressurizing.
Qhov tsis zoo:Cov khoom siv sij hawm ntev los tsim thiab kev ua haujlwm tsawg.
Daim ntawv thov:Ntau yam profiles, kav dej, thiab lwm yam. Plexiglass yog cov khoom siv yas casting tshaj plaws. Plexiglass yog cov khoom siv yas ntau dua classic.
3. Compression molding
Kuj hu ua hloov cov yas zaj duab xis molding, nws yog ib txoj kev molding ntawm thermosetting yas. Lub workpiece yog kho thiab tsim nyob rau hauv pwm kab noj hniav tom qab cua sov thiab nias thiab ces cua sov.
Txheej txheem:
ib. Pub cua sov: Thaum tshav kub kub thiab soften cov ntaub ntawv raw.
b. Pressurization: Siv lub ntsej muag lossis lub plunger los nias cov khoom muag thiab molten raw khoom rau hauv pwm.
c. Kev tsim: txias thiab demoulding tom qab sib sau.
Qhov zoo:Tsawg dua workpiece batches, txo nqi zog, tsis zoo nyob rau hauv kev ntxhov siab, thiab siab qhov tseeb; tsawg pwm hnav tuaj yeem tsim cov khoom siv nrog cov khoom zoo lossis cov khoom siv cua sov.
Qhov tsis zoo:Tus nqi siab ntawm kev tsim pwm; poob loj ntawm cov khoom siv yas.
Post lub sij hawm: May-18-2022
