Hauv cov txheej txheem molding ntawm kev hloov cov khoom yas rau hauv cov khoom yas, cov yas feem ntau raug rau qhov kub thiab txias, thiab ntws molding ntawm siab shear tus nqi.Cov txheej txheem molding sib txawv thiab cov txheej txheem yuav muaj qhov sib txawv ntawm cov khoom zoo.Txhaj tshuaj molding muaj yas Nws muaj plaub yam: raw khoom, txhaj tshuaj molding tshuab, pwm thiab txhaj tshuaj molding txheej txheem.
Qhov zoo ntawm cov khoom muaj xws li cov khoom siv sab hauv zoo thiab cov tsos zoo.Cov khoom siv sab hauv zoo yog cov khoom siv dag zog, thiab qhov loj ntawm cov kev ntxhov siab sab hauv ncaj qha cuam tshuam rau lub zog ntawm cov khoom.Cov laj thawj tseem ceeb ntawm kev tsim cov kev ntxhov siab sab hauv yog txiav txim siab los ntawm crystallinity ntawm cov khoom thiab kev taw qhia ntawm cov molecules hauv yas molding.ntawm.Cov tsos zoo ntawm cov khoom yog qhov zoo ntawm cov khoom, tab sis warping thiab deformation ntawm cov khoom tshwm sim los ntawm kev ntxhov siab nyob rau hauv loj yuav cuam tshuam rau cov tsos zoo.Cov tsos zoo ntawm cov khoom muaj xws li: cov khoom tsis txaus, cov khoom dents, weld marks, flash, npuas, nyiaj nyob ntawm tej, dub me ntsis, deformation, tawg, delamination, tev thiab discoloration, thiab lwm yam, tag nrho cov muaj feem xyuam rau molding kub, siab, txaus, sij hawm. thiab txoj haujlwm.ntsig txog.
Cov ntsiab lus
Part 1: Moulding kub
Qhov thib ob: Moulding txheej txheem siab
Ntu peb: Txhaj molding tshuab ceev
Ntu 4: Kev teem sijhawm
Ntu 5: Kev Tswj Xyuas Txoj Haujlwm
Part 1: Moulding kub
Barrel kub:Nws yog lub melting kub ntawm cov yas.Yog hais tias lub chim kub teem siab dhau lawm, lub viscosity ntawm cov yas tom qab melting yog tsawg.Nyob rau hauv tib qhov kev txhaj tshuaj siab thiab ntws tus nqi, qhov kev txhaj tshuaj nrawm nrawm, thiab cov khoom molded yog nquag flash, nyiaj, discoloration thiab brittleness.
Qhov kub ntawm lub thoob yog tsawg dhau, cov yas tsis zoo plasticized, lub viscosity siab, qhov kev txhaj tshuaj yog qeeb nyob rau hauv tib qhov kev txhaj tshuaj siab thiab ntws tus nqi, cov khoom molded yog yooj yim tsis txaus, cov cim weld yog pom tseeb, qhov ntev yog tsis ruaj khov thiab muaj cov blocks txias hauv cov khoom.
Nozzle kub:Yog hais tias lub nozzle kub yog teem siab, lub nozzle yuav yooj yim drool, ua rau txias filaments nyob rau hauv cov khoom.Tsawg nozzle kub ua rau clogging ntawm pwm pouring system.Kev txhaj tshuaj yuav tsum tau nce ntxiv rau txhaj tshuaj yas, tab sis yuav muaj cov khoom txias hauv cov khoom molded tam sim ntawd.
Pwm kub:Yog tias pwm kub siab, qhov kev txhaj tshuaj siab thiab tus nqi ntws tuaj yeem txo qis.Txawm li cas los xij, ntawm tib lub siab thiab ntws tus nqi, cov khoom yuav yooj yim flash, warp thiab deform, thiab nws yuav nyuaj rau tshem tawm cov khoom los ntawm pwm.Cov pwm kub yog qhov tsawg, thiab nyob rau hauv tib qhov kev txhaj tshuaj siab thiab ntws tus nqi, cov khoom yog tsim tsis txaus, nrog npuas thiab vuam cov cim, thiab lwm yam.
Plastic drying kub:Ntau yam yas muaj qhov sib txawv kom qhuav kub.ABS yas feem ntau teem lub ziab kub ntawm 80 mus rau 90 ° C, txwv tsis pub nws yuav nyuaj rau qhuav thiab evaporate cov dej noo thiab residual solvents, thiab cov khoom yuav yooj yim muaj nyiaj xov hlau thiab npuas, thiab lub zog ntawm cov khoom yuav kuj txo.
Qhov thib ob: Moulding txheej txheem siab
Pre-moulding rov qab siab:siab rov qab siab thiab siab ceev ceev txhais tau hais tias ntau cov ntaub ntawv yuav muab khaws cia nyob rau hauv tib lub ntim.Tsis tshua muaj siab rov qab txhais tau tias tsis tshua muaj cia ceev thiab tsawg cia khoom.Tom qab teeb tsa qhov chaw cia, thiab tom qab ntawd ua qhov kev hloov pauv loj rau sab nraub qaum, koj yuav tsum tau ua tib zoo saib xyuas qhov chaw cia khoom, txwv tsis pub nws yuav yooj yim ua rau flash lossis khoom tsis txaus.
Txhaj tshuaj siab:Ntau hom yas muaj qhov sib txawv yaj viscosities.Lub viscosity ntawm amorphous plastics hloov pauv zoo heev nrog kev hloov pauv hauv plasticizing kub.Kev txhaj tshuaj siab yog teem raws li qhov vuam viscosity ntawm cov yas thiab cov txheej txheem yas.Yog tias qhov kev txhaj tshuaj siab tau teeb tsa qis dhau lawm, cov khoom yuav raug txhaj tshuaj tsis txaus, ua rau muaj qhov dents, weld marks thiab qhov ntev tsis ruaj khov.Yog tias qhov kev txhaj tshuaj siab dhau lawm, cov khoom yuav muaj flash, discoloration thiab nyuaj rau pwm ejection.
Clamping siab:Nws nyob ntawm qhov projected cheeb tsam ntawm pwm kab noj hniav thiab txhaj tshuaj.Yog tias lub clamping siab tsis txaus, cov khoom yuav yooj yim flash thiab nce qhov hnyav.Yog tias lub zog clamping loj dhau, nws yuav nyuaj rau qhib pwm.Feem ntau, qhov clamping siab teeb tsa yuav tsum tsis pub tshaj 120par / cm2.
Tuav siab:Thaum txhaj tshuaj tiav lawm, cov ntsia hlau txuas ntxiv muab lub zog hu ua tuav lub siab.Lub sijhawm no, cov khoom hauv pwm kab noj hniav tseem tsis tau khov.Kev tuav lub siab tuaj yeem txuas ntxiv mus rau lub pwm kab noj hniav kom paub meej tias cov khoom puv.Yog tias qhov tuav lub siab thiab qhov chaw siab siab dhau lawm, nws yuav ua rau muaj kev tiv thaiv zoo rau cov pwm txhawb nqa thiab cov tub ntxhais rub tawm.Cov khoom yuav yooj yim tig dawb thiab warp.Tsis tas li ntawd, lub rooj vag pwm khiav yuav yooj yim nthuav thiab nruj los ntawm cov yas ntxiv, thiab lub rooj vag yuav tawg rau hauv tus khiav.Yog tias qhov siab qis dhau lawm, cov khoom yuav muaj dents thiab tsis ruaj khov.
Lub hauv paus ntsiab lus ntawm kev teeb tsa lub ejector thiab neutron siab yog los teeb tsa lub siab raws li qhov loj me ntawm cov pwm kab noj hniav, thaj tsam ntawm qhov chaw ntawm cov tub ntxhais ntxig, thiab cov geometric complexity ntawm cov khoom molded.qhov loj.Feem ntau, qhov no yuav tsum tau teeb tsa lub siab ntawm cov pwm txhawb nqa thiab lub tog raj kheej neutron kom muaj peev xwm thawb cov khoom.
Ntu peb: Txhaj molding tshuab ceev
Ntsia hlau ceev: Ntxiv nrog rau kev kho tus nqi ntawm cov yas ua ntej, nws feem ntau cuam tshuam los ntawm kev ua ntej yas rov qab siab.Yog hais tias lub pre-molding txaus tus nqi yog hloov mus rau ib tug loj tus nqi thiab lub pre-molding rov qab siab yog siab, raws li cov ntsia hlau rotates, cov yas yuav muaj ib tug loj shear quab yuam nyob rau hauv lub chim, thiab cov yas molecular qauv yuav yooj yim txiav tawm. .Cov khoom lag luam yuav muaj cov pob dub thiab cov kab txaij dub, uas yuav cuam tshuam rau qhov zoo thiab lub zog ntawm cov khoom., thiab lub thoob cua kub kub yog qhov nyuaj rau tswj.Yog hais tias lub pre-plastic flow rate yog teem tsawg dhau, lub sij hawm pre-yas cia yuav txuas ntxiv, uas yuav cuam tshuam rau lub voj voog molding.
Txhaj ceev:Kev txhaj tshuaj nrawm yuav tsum tau teeb tsa kom tsim nyog, txwv tsis pub nws yuav cuam tshuam rau cov khoom zoo.Yog tias qhov kev txhaj tshuaj nrawm dhau lawm, cov khoom yuav muaj npuas, hlawv, tsis muaj xim, thiab lwm yam. Yog tias qhov kev txhaj tshuaj nrawm dhau lawm, cov khoom yuav raug tsim tsis txaus thiab muaj cov cim vuam.
Txhawb pwm thiab neutron flow rate:yuav tsum tsis txhob teem siab dhau lawm, txwv tsis pub lub ejection thiab core rub txav yuav nrawm heev, ua rau tsis ruaj khov ejection thiab core rub, thiab cov khoom yuav yooj yim tig dawb.
Ntu 4: Kev teem sijhawm
Lub sijhawm ziab:Nws yog lub sijhawm ziab rau cov khoom siv yas.Ntau hom yas muaj qhov pom kev ziab kom qhuav thiab lub sijhawm.Lub ziab kub ntawm ABS yas yog 80 ~ 90 ℃ thiab lub sij hawm ziab yog 2 teev.ABS yas feem ntau absorbs 0.2 mus rau 0.4% dej nyob rau hauv 24 teev, thiab cov dej ntsiab lus uas yuav txhaj molded yog 0.1 mus rau 0.2%.
Kev txhaj tshuaj thiab lub sijhawm tuav:Txoj kev tswj ntawm lub tshuab computer txhaj tshuaj yog nruab nrog ntau theem txhaj tshuaj los kho lub siab, ceev thiab txhaj tshuaj yas nyiaj hauv theem.Qhov ceev ntawm cov yas txhaj rau hauv pwm kab noj hniav nce mus txog qhov ceev ceev, thiab cov tsos thiab cov khoom siv sab hauv zoo ntawm cov khoom pwm zoo tuaj.
Yog li ntawd, cov txheej txheem txhaj tshuaj feem ntau yog siv txoj haujlwm tswj tsis siv sijhawm.Kev tuav tuav yog tswj los ntawm lub sijhawm.Yog tias lub sijhawm tuav tau ntev, cov khoom ntom ntom yog qhov hnyav, qhov hnyav yog qhov nyuaj, yooj yim rau whiten, thiab lub voj voog moulding txuas ntxiv.Yog hais tias lub sij hawm tuav yog luv luv, cov khoom yuav ua rau dents thiab tsis ruaj khov qhov ntev.
Lub sijhawm txias:Nws yog los xyuas kom meej tias cov khoom yog ruaj khov nyob rau hauv cov duab.Nws yuav tsum tau txias txaus thiab shaping lub sij hawm tom qab cov yas txhaj rau hauv pwm kab noj hniav yog molded rau hauv cov khoom.Txwv tsis pub, cov khoom yog ib qho yooj yim rau warp thiab deform thaum lub pwm qhib, thiab ejection yog yooj yim deform thiab ua dawb.Lub sij hawm txias yog ntev dhau lawm, uas ua rau lub voj voog molding ntev thiab tsis zoo.
Ntu 5: Kev Tswj Xyuas Txoj Haujlwm
Pwm hloov txoj hauj lwm yog tag nrho kev txav deb ntawm pwm qhib mus rau pwm kaw thiab kaw, uas yog hu ua pwm hloov txoj hauj lwm.Txoj haujlwm zoo tshaj plaws los txav cov pwm yog kom muaj peev xwm tshem tawm cov khoom zoo.Yog tias pwm qhib qhov deb loj dhau, lub voj voog molding yuav ntev.
Ntev npaum li txoj haujlwm ntawm cov pwm txhawb nqa yog tswj, txoj haujlwm ntawm ejection ntawm pwm tuaj yeem raug tshem tawm yooj yim thiab cov khoom tuaj yeem raug tshem tawm.
Qhov chaw cia khoom:Ua ntej, tus nqi ntawm cov yas txhaj rau hauv cov khoom molded yuav tsum tau ua kom ntseeg tau, thiab qhov thib ob, tus nqi ntawm cov khoom khaws cia hauv lub thoob yuav tsum tswj tau.Yog tias qhov chaw cia khoom raug tswj los ntawm ntau tshaj ib qho kev txhaj tshuaj, cov khoom yuav yooj yim flash, txwv tsis pub cov khoom yuav tsim tsis txaus.
Yog tias muaj cov khoom siv ntau dhau hauv lub thoob, cov yas yuav nyob hauv lub thoob rau lub sijhawm ntev, thiab cov khoom yuav yooj yim ploj mus thiab cuam tshuam rau lub zog ntawm cov khoom molded.Ntawm qhov tsis sib xws, nws cuam tshuam rau qhov zoo ntawm cov yas yas, thiab tsis muaj cov khoom siv ntxiv rau hauv pwm thaum lub sij hawm tswj, ua rau cov khoom molding tsis txaus thiab dents.
Xaus
Qhov zoo ntawm kev txhaj tshuaj molded khoom suav nrog cov khoom tsim, cov ntaub ntawv yas, pwm tsim thiab kev ua haujlwm zoo, kev txhaj tshuaj molding tshuab xaiv thiab kev hloov txheej txheem, thiab lwm yam. Cov txheej txheem txhaj tshuaj tsis tuaj yeem pib los ntawm qee qhov chaw, tab sis yuav tsum pib los ntawm lub hauv paus ntsiab lus ntawm kev txhaj tshuaj. .Kev ua kom tiav thiab kev xav txog cov teeb meem, kev hloov kho tuaj yeem ua ib qho los ntawm ib qho los ntawm ntau yam lossis ntau yam teeb meem tuaj yeem hloov kho ib zaug.Txawm li cas los xij, txoj kev hloov kho thiab lub hauv paus ntsiab lus nyob ntawm qhov zoo thiab cov txheej txheem ntawm cov khoom tsim thaum lub sijhawm ntawd.
Post lub sij hawm: Nov-15-2023