Automotive Sab hauv Plastic Parts Processing

Apr 17, 2026

Tso lus

Hauv kev lag luam automotive manufacturing, qhov zoo ntawm cov khoom sab hauv ncaj qha cuam tshuam qhov kev paub ntawm cov neeg tsav tsheb thiab cov neeg caij tsheb thiab tag nrho kev lag luam kev sib tw ntawm lub tsheb. Los ntawm lub dashboard mus rau lub qhov rooj panels, los ntawm lub hauv paus tunnel mus rau cua txias vents, feem ntau ntawm cov sab hauv qhov chaw cia siab rau lub core technologies ntawm "yas pwm" thiab "txhaj tshuaj molding" rau ntau lawm. Kab lus no, raws li cov kev coj ua hauv kev lag luam tam sim no, qhia txog cov txheej txheem thev naus laus zis, cov ntsiab lus tseem ceeb ntawm kev tswj hwm, thiab kev txhim kho yav tom ntej ntawm automotive tha xim sab hauv cov khoom siv.

 

Pwm: "Master Template" ntawm Txhaj Molding

Pwm yog lub hauv paus rau kev txiav txim siab qhov tseeb, qhov zoo ntawm qhov chaw, thiab kev tsim khoom ntawm cov khoom sab hauv. Ib qho kev txhaj tshuaj pwm zoo yuav tsum ua tiav qhov kev sib koom tes hauv cov qauv, kev tsim khoom precision, thiab kev xaiv cov khoom siv.

Kev txiav txim siab tseem ceeb hauv kev tsim qauv

Parting Surface Design: Muaj feem cuam tshuam rau demolding smoothness thiab flash nyiam. Kev xaiv tsim nyog ntawm txoj hauj lwm ntawm qhov chaw tuaj yeem zam kom tsis txhob muaj cov cim pom tseeb ntawm A- qib zoo li nto.

Gating System: Ncaj qha txiav txim siab seb cov kua nplaum puas zoo ib yam thiab nrawm. Rau nyias-cov phab ntsa lossis cov qauv tsim, ntau- taw tes rooj vag lossis cov cuab yeej siv hluav taws xob kub yog feem ntau siv los txo cov dej tsis kam thiab cov khoom pov tseg.

Txias System: Ua haujlwm 50% -70% ntawm lub voj voog molding, lub sijhawm txias yog lub hauv paus rau kev tsim khoom. Conformal cua txias channel tsim tuaj yeem ua rau pwm qhov kub thiab txias dua, ua kom lub sijhawm txias txias thiab txo qhov kev pheej hmoo ntawm kev ua tsov rog.

Manufacturing Precision thiab Materials Niaj hnub nimno pwm tsim tau txais kev koom ua ke ntawm CAD / CAM / CAE txheej txheem: tom qab 3D tsim, precision khoom xws li CNC thiab EDM yog siv rau machining los xyuas kom meej tias qhov tseem ceeb ntawm qhov ntev yog tswj nyob rau hauv ± 0.5mm. High- cov cuab yeej zoo steels (xws li P20 thiab H13) feem ntau yog xaiv rau cov hlau pwm, thiab nitriding lossis PVD txheej yog siv thaum tsim nyog los tiv thaiv kev hnav thiab corrosion nyob rau hauv qhov siab - kub, siab - kev txhaj tshuaj molding ib puag ncig.

 

Txhaj Molding Txheej Txheem: Parameters Equal Quality

Kev txhaj tshuaj molding tsis yog ib qho yooj yim peb - cov txheej txheem ntawm "melting- filling-cooling"; txhua tus txheej txheem parameter yog ncaj qha ntsig txog qhov tsis xws luag ntawm cov khoom kawg.

 

Khoom Pretreatment
Hygroscopic engineering yas xws li polyamide (PA) thiab polycarbonate (PC) yuav tsum tau qhuav ua ntej txhaj tshuaj molding. Feem ntau, cov ntsiab lus noo noo tsawg dua 0.2% yog xav tau, nrog rau qhov kub thiab txias ntawm 80-120℃thiab lub sijhawm ziab ntawm 2-4 teev. Txwv tsis pub, nyiaj streaks, npuas, thiab txawm degradation dub me ntsis yog heev yuav tshwm sim ntawm cov khoom nto.

 

Ntsiab Parameter Control

Temperature Gradient: Lub chim kub nce maj mam los ntawm lub rear mus rau pem hauv ntej (piv txwv li, PP: 150℃→ 220 degree); pwm kub yog teem raws li cov khoom siv crystallinity thiab zoo li yuav tsum tau. High-gloss qhov chaw feem ntau siv pwm kub tswj kom tswj qhov kub thiab txias.

Siab thiab Ceev: Kev txhaj tshuaj yog feem ntau ntawm 50-150 MPa. Rau nyias- phab ntsa lossis ntev- ntws qhov chaw, siab- yuav tsum tau txhaj tshuaj nrawm; thaum tuab- cov phab ntsa yuav tsum tau tuav tuav kom tsis txhob muaj cov cim shrinkage.

Lub Sijhawm Muab faib: Lub sijhawm txias yog qhov ntev tshaj plaws. Kev ua kom zoo tshaj qhov kev tsim cov cua txias tuaj yeem ua rau lub sij hawm luv luv thiab ncaj qha nce ib qho - tshuab tso zis.

 

Common Defects thiab Countermeasures

Kev tsis txaus ntawm cov khoom siv: nce kev txhaj tshuaj siab / kub, lossis nce tus naj npawb / qhov loj ntawm lub rooj vag. Flash: Xyuas seb lub clamping quab yuam puas txaus; kho hnav ntawm pwm parting nto.

Warpage: Ua kom zoo dua qhov tuav lub siab nkhaus thiab txias channel layout kom txo cov kev ntxhov siab sab hauv.

Weld kab: Ua kom kub kub thiab txhaj tshuaj ceev; ntxiv venting grooves ntawm qhov chaw sib thooj hauv pwm.

Cov cim dab dej: Ua kom lub zog tuav thiab lub sijhawm, lossis tsim kom txo cov phab ntsa tuab hauv qee qhov chaw ntawm cov khoom.

 

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