PC

High toughness, zoo heev cuam tshuam lub zog, pob tshab. PC yog siv dav siv thermoplastic nrog cov khoom siv kho tshuab zoo heev, zoo heev toughness, zoo kub tsis kam, thiab yooj yim toprocess.

Yuav ua tau optically pob tshab.

Cov lus zoo.
Cov piv txwv zoo dua.

 

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Cov ntsiab lus

1.Qhov zoo ntawm PC Txhaj Moulding

2.Kev siv ntawm PC Moulded Parts

3.Cov lus qhia kom zoo dua nto tiav

4.Optimal Moulding Parameters

5. Case Study

1. Qhov zoo ntawmPCTxhaj Molding

• Zoo heev mechanical zog thiab toughness
• High cuam tshuam tsis kam thiab kub tsis kam
• Zoo dimensional stability thiab transparency
• PC txhaj tshuaj molding yog dav siv nyob rau hauv electronics, automotive, teeb pom kev zoo, kho mob, thiab cov khoom siv.

Peb tau tsim PC molded Cheebtsam rau:

• Cov khoom siv hluav taws xob thiab cov khoom siv teeb pom kev zoo: cov vaj tsev pob tshab, lub teeb npog, thiab cov ntaub thaiv npog
• Automotive qhov chaw: ntsuas vaj huam sib luag, tiv thaiv npog, thiab cov khoom siv sab hauv
• Mechanical thiab industrial qhov chaw: lub zog, cov khoom siv hauv tsev, thiab cov ntaub thaiv npog

2. Daim ntawv thov teb ntawmPCTxhaj Molding

Instrumentation & Light Industry: Electronics & Light Industry: vaj tse, vaj huam sib luag, tiv thaiv npog, brackets, thiab teeb pom kev zoo

Kev Tsim Kho & Cov Khoom Siv Khoom Siv: pob tshab panels, kev nyab xeeb

Automotive: sab hauv thiab sab nrauv, dashboards, ntsuas vaj huam sib luag, teeb npog, thiab cov ntaub thaiv npog

3. Yuav ua li cas kom tau ib tug zoo nto tiav rau PC Txhaj Moulded qhov chaw

Cov tsos ntawm PC qhov chaw nyob ntawm pwm zoo, ua, thiab cov khoom siv. Vim PC lub tshav kub tsis kam thiab pob tshab, ceev faj tswj qhov kub thiab txias yog qhov tseem ceeb.

3.1 Pwm Zoo

Kab noj hniav tag: khawb, qhov pores, los yog roughness yog heev pom ntawm pob tshab los yog glossy PC qhov chaw. Peb ua kom daim iav- polished kab noj hniav thiab siv tawv chrome plating los yog npib tsib xee plating qhov tsim nyog.

Kev huv huv: Txhua yam roj, plua plav, lossis tso tawm cov khoom seem yuav pom tau zoo ntawm PC qhov chaw. Kev tu pwm tsis tu ncua yog tswj xyuas nruj heev.

Draft lub kaum sab xis: Cov qauv tsis txaus tuaj yeem ua rau khawb lossis rub cov cim, tshwj xeeb tshaj yog ntawm cov pob tshab loj. Cov kaum sab xis yog ua tib zoo tshuaj xyuas hauv DFM.

Lub tshuab ua pa: Cov cua tsis zoo tuaj yeem tsim cov cim kub hnyiab, streaks, lossis qhov chaw du. Venting yog optimized rau smooth flow, tshwj xeeb tshaj yog rau tuab los yog pob tshab seem.

Lub rooj vag thiab khiav tsim: Cov kev hloov pauv tsis zoo lossis cov rooj vag me me tuaj yeem ua rau muaj kev sib tsoo, ua rau cov kab ntws los yog haze. Mould flow simulations yog ua los txhim kho qhov chaw tso chaw thiab khiav qhov loj.

3.2 Moulding Parameters

Kev txhaj tshuaj nrawm: nrawm dhau tuaj yeem tsim cov cim ntws; qeeb dhau tuaj yeem ua rau tsis tiav puv lossis ua kom muaj cua daj cua dub. Qhov sib npaug ceev yog qhov tseem ceeb rau pob tshab lossis glossy PC qhov chaw.

Lub tshuab cua txias: qhov tsis sib xws yuav ua rau muaj kev sib tsoo, kev sib tsoo, lossis qhov chaw dull. Cov cua txias yog ua tib zoo tsim los tswj qhov kub thiab txias.

Tuav siab & sijhawm: Tsis txaus siab lossis lub sijhawm yuav ua rau muaj qhov tsis muaj dab tsi lossis cov cim hauv lub dab dej; Kev teeb tsa kom raug yog qhov tseem ceeb rau kev tswj kom pom tseeb thiab qhov smoothness.

Melt kub: PC yuav tsum tau melting kub dua li ABS. Tsawg melting kub txo flowability thiab pob tshab; kub dhau heev tuaj yeem ua rau degradation. Kub yog ua tib zoo tswj kom ua tiav qhov zoo ntawm qhov chaw.

3.3 Cov khoom siv raw

Granule uniformity: Tsis yog -cov pellets tsis sib xws ua rau cov dej tsis sib xws, kub hnyiab, lossis nto streaks. Peb nruj me ntsis xaiv thiab tshuaj ntsuam cov ntaub ntawv.

Cov ntsiab lus noo noo: PC yog hygroscopic heev; Txawm tias me ntsis ya raws tuaj yeem ua rau npuas, nto roughness, lossis pom huab. Cov ntaub ntawv raug muab ua ntej- qhuav.

Additive thiab colorant dispersion: Kev sib xyaw tsis sib xws tuaj yeem ua rau muaj streaks, xim inconsistency, lossis gloss txo. High-zoo, zoo- cov khoom siv dispersed yog siv.

Impurities: Cov khoom txawv teb chaws tuaj yeem ua rau pom qhov muag lossis khawb, tshwj xeeb tshaj yog ntawm cov pob tshab. Peb xyuas kom meej tias cov ntaub ntawv huv si thiab impurity -dawb.

Cov ntsiab lus rov ua dua: Cov PC siv ntau dhau tuaj yeem txo qhov pom tseeb thiab ci ntsa iab. Tus nqi yog tswj nruj me ntsis rau siab - qhov zoo.

4. Zoo Parameters rauPCTxhaj Molding

4.1 Cov Khoom Tseem Ceeb

Moisture Sensitivity: PC yog hygroscopic heev; cov ntaub ntawv yuav tsum tau qhuav kom huv si (hauv qab 0.02% noo noo) ntawm 120℃rau 3-4 teev kom tsis txhob muaj npuas thiab tsis zoo.

Flow Cwj Pwm: Cov yaj muaj viscosity siab; Kev txhaj tshuaj ntau dua thiab lub siab ua kom zoo txaus thiab txo cov kev ntxhov siab sab hauv.

Shrinkage tus nqi: 0.5-0.7%, kom ntseeg tau qhov zoo seem stability.

Tshuab Hom: Ntsiav tshuaj- hom txhaj tshuaj tshuab tau pom zoo rau kev sib xyaw melting thiab ruaj khov molding zoo; tag nrho peb cov kab ntau lawm siv cov ntsia hlau- hom tshuab.

Txhaj ntim: Zoo tagnrho rau siv 40-70% ntawm lub tshuab txhaj tshuaj ntau tshaj plaws rau kev tswj xyuas qhov kub thiab qhov zoo.

Runner Design:

- Tus khiav lub ntsiab Tsawg dua los yog sib npaug li 100 mm (zoo dua nyob ib ncig ntawm 50 mm)

-Sub- khiav 6-8 mm rau kev sib npaug thiab kev sau yooj yim

Ejection Force: Yuav tsum maj mam kom tsis txhob muaj kev ntxhov siab saum npoo los yog tawg.

Tom qab-Kev Kho Mob: Kev kho qhov kub ntawm 120℃rau 2-3 teev pab tso tawm kev ntxhov siab sab hauv thiab txhim kho cov neeg kho tshuab lub zog.

4.2 Yam Moulding Parameters

Cov molding tsis rau PC qhov chaw sib txawv nyob ntawm seb cov khoom qib, ib feem geometry, thiab yuav tsum tau nto zoo. Kev tswj kom zoo ntawm lub thoob qhov kub, pwm kub, thiab kev txhaj tshuaj siab yog qhov tseem ceeb kom ua tiav qhov siab - zoo, qhov seem ruaj khov.

Cov kev ntsuas no ua raws li cov lus qhia dav dav; zoo- yuav tsum tau kho raws li qhov nyuaj, tuab, thiab cov cuab yeej tsim los xyuas kom meej qhov zoo ntawm qhov chaw, kev ua haujlwm zoo, thiab qhov ruaj khov.

5. PCTxhaj Molding CaseStudy

5.1 Product Basic ntaub ntawv

Khoom npe: Lub teeb vaj huam sib luag Mounting Base

Khoom xim: Dub

Khoom Loj: 125.63 x 201 x 137.99 mm

Qhov nruab nrab thickness: 2 hli

Cavity: 1 Cavity

Khoom siv: Makrolon 2407 (PC)

Cov khoom zoo li yuav tsum tau: Tsis muaj vuam kab, Tsis muaj cov tsos mob

5.2 Kev Ntsuas Ua Ntej

Los xyuas kom meej manufacturability, ntau yam tau soj ntsuam nyob rau hauv thaum ntxov txoj kev loj hlob theem.

5.2.1 Cov Qauv Khoom thiab Txheej Txheem Ua Tau Zoo

Lub ntsiab phab ntsa thickness yog li 2 hli thiab feem ntau sib xws, txo cov cim dab dej thiab kev phom sij. Draft cov ces kaum yog txaus rau du ejection tsis muaj nto khawb. Rib thiab reinforcement lug tau optimized kom sib npaug zog thiab cov khoom siv.

5.2.2 Molding Simulation Analysis

MoldFlow simulation kwv yees qhov sib npaug sib npaug nrog cov pa me me -cuav pheej hmoo. Qhov siab tshaj plaws txhaj tshuaj ntawm V / P hloov pauv yog 79.82 MPa, thiab yaj pem hauv ntej kub (310-341 degree) yog nyob rau hauv qhov tsim nyog molding ntau yam.

5.2.3 Cua txias thiab muaj kev pheej hmoo

Kev ntsuas cua txias (coolant 100 degree, Re=16355) qhia tias muaj cua sov zoo. Cov kev pheej hmoo tseem ceeb suav nrog cov cuab yeej cua hauv cheeb tsam, cov kab txuas, thiab qhov muaj peev xwm shrinkage (max qhov tob 0.156 hli, vol. shrinkage 8.98%). Warpage yog tswj nyob rau hauv 0.61 mm zuag qhia tag nrho, yuav tsum tau ntxiv optimization.

5.3 Kev tsim kho kom zoo

Raws li qhov tsis xws luag thiab kev pheej hmoo pom nyob rau hauv qhov kev ntsuam xyuas ua ntej, cov kev ua kom zoo hauv qab no tau ua tiav:

5.3.1 Cov qauv khoom

Phab ntsa thickness faib tau ua kom zoo kom ua tiav ntau qhov sib xws 2 hli, txo cov cim dab dej thiab shrinkage. Venting slots (0.2–0.3 mm dav, 0.03–0.05 mm sib sib zog nqus) tau ntxiv rau hauv huab cua -trap thiab weld-kab kab los txhim kho cov pa tawm thiab zoo li.

5.3.2 Gate and Runner System

Lub rooj vag qhov chaw tau raug kho kom sib npaug thiab tsis txhob nyias - tej phab ntsa. Cov chaw khiav hauv zos tau nthuav me ntsis kom txo qis kev ua haujlwm thiab ua kom ruaj khov kev sib kis.

5.3.3 Txheej txheem Parameters

Lub sijhawm tuav tau txuas ntxiv mus rau 5-8 s, nrog kev tuav siab nce mus rau 85-90% ntawm tus nqi siab tshaj. Melt kub tau optimized rau 290-310℃kom zoo ntws thiab nto zoo. Cov txheej txheem cua txias tau ua kom zoo rau qhov ntsuas kub sib xws.

5.4 Tom qab-Kev tsom xam ua kom zoo

5.4.1 Filling Performance

Lub sij hawm ntim tseem nyob li ntawm 2.1 s nrog txhim kho kev tshuav nyiaj li cas thiab txo cov huab cua -cua kev pheej hmoo.

5.4.2 Siab & Kub Distribution

Txhaj siab stabilized ntawm 75–80 MPa, thiab yaj-pem hauv ntej qhov kub thiab txias rau 315–335 degree, txhim kho qhov kub thiab txias uniformity.

5.4.3 Kev txo qis

Weld-kab zog thiab cua venting zoo dua; Qhov siab tshaj plaws dab dej qhov tob txo qis dua 0.08 hli; ntim shrinkage variation txo nyob rau hauv 2%; tag nrho warpage poob rau<0.4 mm (Z-axis <0.3 mm).

5.4.4 Lwm yam

Clamping force remained stable at 120–125 T; cooling efficiency consistent with Reynolds number >15,000, ua kom lub voj voog ruaj khov.

5.5 Cov ntsiab lus & cov lus pom zoo

5.5.1 Cov txiaj ntsig

Kev tsim kho kom zoo tau daws cov teeb meem tseem ceeb xws li cov cuab yeej cua, cov kab txuas, shrinkage, thiab warpage.

5.5.2 Cov lus pom zoo ntau lawm

Ua raws li qhov zoo tshaj plaws: yaj 290-310 degree, pwm 80-120 degree, tuav 5-8 s, siab 85-90%.

Xyuas kom lub qhov cua qhov precision, txias txaus tshuav, thiab phab ntsa thickness kam rau ua thaum pwm fabrication. Tsis tu ncua saib xyuas qhov kub thiab txias, siab, thiab qhov ntev stability hauv kev tsim khoom loj.

5.5.3 Xaus

Txoj kev npaj molding optimized qhia tau tias muaj kev ua tau zoo thiab ruaj khov, tswj tau qhov tsis xws luag thiab ua kom cov khoom zoo sib xws thiab kev ua haujlwm zoo.