ABS

Common thermoplastic, cuam tshuam resistant, yooj yim rau tshuab. ABS yog ib hom thermoplastic uas muaj txhua yam - nyob ib ncig ntawm cov khoom siv kho tshuab zoo, muaj zog ua haujlwm zoo, ua haujlwm kub thiab ua haujlwm zoo.

Cov lus zoo.
Cov piv txwv zoo dua.

 

<

>

Cov ntsiab lus

1.Qhov zoo ntawm ABS Txhaj Moulding

2.Kev siv ntawm ABS Moulded Parts

3.Cov lus qhia kom zoo dua nto tiav

4.Optimal Moulding Parameters

5. Case Study

1.Qhov zoo ntawm ABS Txhaj Moulding

• Zoo heev mechanical zog
• Tus nqi - cov khoom siv tau zoo
• Yooj yim rau pwm nrog kev ua haujlwm ruaj khov
• ABS txhaj tshuaj molding yog siv dav hauv cov khoom siv hluav taws xob, khoom siv hauv tsev, khoom siv hauv chaw ua haujlwm, cov twj paj nruag, tshuab, thiab cov khoom siv tsheb.

Peb tau tsim ABS molded Cheebtsam rau:

• Cov khoom siv teeb pom kev zoo: lub teeb vaj tsev, diffusers, thiab reflectors
• Cov tub yees thiab cov khoom siv: portable tsheb tub yees, pob qhov rooj, thiab npog
• Mechanical qhov chaw: iav, tiv thaiv panels, thiab enclosures
• Cov khoom siv niaj hnub- siv thiab ua neej nyob: lub thawv rau khaub ncaws thiab lub tais rau tsiaj
• Thiab ntau lwm yam kev cai yas khoom thoob plaws ntau yam kev lag luam.

2.Application Fields ntawm ABS Txhaj Molding

• Instrumentation & Light Industry: instrument panels, case, brackets, cabinets, and music instruments
• Kev tsim kho: cov kav dej, cov yeeb nkab fittings, qhov rais thiab qhov rooj thav ntawv, lub kaus mom kev nyab xeeb
• Automotive: sab hauv thiab sab nrauv, grilles, teeb npog, dashboards, tswj vaj huam sib luag

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

Cov tsos ntawm ABS molded qhov chaw feem ntau yog nyob ntawm pwm zoo, kev ua haujlwm tsis zoo, thiab cov khoom siv raw.

3.1 Pwm Zoo

• Cavity tiav: polishing tsis zoo los yog nto defects (scratches, pores, roughness) yuav cuam tshuam ncaj qha rau ntawm qhov tsos. Peb xyuas kom muaj daim iav tiav thiab siv chrome plating yog tias xav tau.
• Kev huv huv: Cov roj, dej stains, lossis cov neeg tso tawm ntau dhau tuaj yeem ua rau lub ntsej muag du. Pwm raug ntxuav thiab tswj tsis tu ncua.
• Draft lub kaum sab xis: Tsis txaus cua ntsawj ntshab ua rau demolding nyuaj thiab tuaj yeem ua rau ntog cov cim. Peb ua kom zoo dua cov kaum sab xis thaum DFM tshuaj xyuas.
• Venting system: Lub qhov cua tsis zoo ua rau muaj cov pa roj los yog qhov chaw du. Txhua tus qauv tsim pwm yog ua tib zoo kuaj xyuas kom zoo.
• Lub rooj vag thiab tus qauv tsim: Cov kev hloov me me dhau los yog sai sai ua rau cov shear thiab turbulence, ua rau tsis zoo. Peb ua pwm khiav tsom mus optimize khiav thiab rooj vag qhov ntau thiab tsawg.

3.2 Moulding Parameters

• Kev txhaj tshuaj nrawm: qeeb dhau lossis nrawm dhau tuaj yeem ua rau muaj qhov tsis xws luag. Kev sib npaug kom zoo ua kom du puv thiab gloss.
• Lub tshuab ua kom txias: Tsis txaus cua txias rau cov khoom tuab ua rau qhov chaw ntxhib lossis matte. Peb optimize cua txias channel rau txawm tias kub tswj.
• Holding pressure & time: Insufficient pressure or short holding time causes low density and poor surface finish.
• Melt kub: Tsawg melting kub txo flowability thiab gloss. Kho qhov kub thiab txias ua kom lub ntsej muag zoo.

3.3 Cov khoom siv raw

• Granule uniformity: Qhov loj me me tsis sib xws ua rau cov yaj tsis zoo thiab cov tsos tsis zoo- cov khoom raug tshuaj xyuas ua ntej molding.
• Cov ntsiab lus rov ua dua: Cov khoom siv rov ua dua tshiab cuam tshuam rau qhov zoo thiab qhov zoo; peb tswj nws qhov kev faib ua feem nruj me ntsis.
• Cov ntsiab lus noo noo: noo noo ua rau npuas thiab qhov chaw tsis zoo; cov ntaub ntawv yog ua ntej- qhuav ua ntej ntau lawm.
• Additive dispersion: Tsis zoo sib xyaw additives cuam tshuam gloss; peb siv high-zoo, zoo- cov ntaub ntawv tawg.
• Impurities: Cov ntaub ntawv txawv teb chaws ua rau cov pob zeb los yog roughness; peb xyuas kom cov ntaub ntawv raw yog huv thiab huv.

4.Best Parameters rau ABS Txhaj Moulding

4.1 Cov Khoom Tseem Ceeb

Moisture Sensitivity: ABS yooj yim absorbs noo noo; raw cov ntaub ntawv yuav tsum tau qhuav kom txog thaum noo noo qis dua 0.3% kom ntseeg tau tias gloss thiab lub zog.

Flow Cwj Pwm: Cov yaj tsis yog -Newtonian - siab dua txhaj tshuaj txo cov viscosity thiab txhim kho kev sau.

Shrinkage Rate: 0.3-0.8%, tso cai rau kev tswj kom meej.

Tshuab Hom: Ntsia Hlau- hom txhaj tshuaj tshuab muaj qhov zoo dua thiab ruaj khov; tag nrho peb cov kab ntau lawm siv cov ntsia hlau- hom tshuab.

Txhaj ntim: Pom zoo kom siv txog li 50% ntawm lub tshuab qhov siab tshaj plaws txhaj tshuaj loj kom zoo dua qhov seem stability thiab nto gloss.

Runner Design:

- Lub ntsiab khiav tsawg dua lossis sib npaug li 100 mm (zoo tagnrho ~ 50 mm)

-Sub- khiav 5-10 mm rau kev ua kom zoo

Ejection Force: Yuav tsum nyob nruab nrab kom tsis txhob ua kom tawv nqaij ntawm qhov chaw.

Tom qab-Kev Kho Mob: Txhawm rau tso cov kev ntxhov siab sab hauv, qhov chaw yog cua sov-kho ntawm 70℃rau 2-4 teev.

4.2 Hom Moulding Parameters

Barrel Temperature:

-General ABS: 180-230 degree

-Heat-Resistant ABS: 190-240 degree

-Nplaim-Retardant ABS: 170-220 degree

Nozzle: 20-30℃qis dua pem hauv ntej chim

Pwm Kub: 50–70℃- yog qhov tseem ceeb rau qhov zoo ntawm qhov chaw thiab qhov tseeb.

Txhaj Tshuaj:

-General ABS: 50-70 MPa

-Heat-Resistant ABS: 60-85 MPa

-Nplaim-Retardant ABS: 60-100 MPa

Kho raws li phab ntsa thickness thiab ntws tsis kam.

5.ABS Txhaj Molding Case Study

5.1Product Basic information

Khoom npe: Hloov npog

Khoom xim: Lub teeb Grey

Khoom Loj: 23.6 x 114.6 x 43.6 mm

Qhov nruab nrab thickness: 1.76 hli

Cavity: 2 Cavity

Khoom siv: ABS V0

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

Hloov Cover Design Drawing

5.2 Kev Ntsuas Ua Ntej

Thaum lub sij hawm pib ntawm txoj kev loj hlob, cov nram qab no tau soj ntsuam xyuas kom meej manufacturability:

Phab ntsa Thickness:1.76 hli nruab nrab, kev kuaj xyuas tsis sib xws los tiv thaiv cov cim hauv dab dej lossis kev ua tsov rog

Draft Angles:Kev soj ntsuam los pab txhawb ejection yam tsis muaj khawb qhov chaw

Ribs thiab Reinforcements:Kev ntsuam xyuas rau txhua yam muaj zog thaum tswj kev siv cov khoom siv tsawg

Filling Simulation:Initial MoldFlow tsom xam kwv yees cov qauv ntws, kev tsim cov kab sib txuas, cov cuab yeej cua, thiab kev txhaj tshuaj luv luv

Kev txiav txim siab txias:Pem hauv ntej thiab nram qab pwm txias ua ntej layout soj ntsuam rau lub voj voog lub sij hawm optimization

5.3 Optimized Tsim

Raws li kev txheeb xyuas ua ntej, qhov kev hloov pauv npog tsim tau zoo raws li hauv qab no:

• Phab ntsa thickness me ntsis kho kom zoo txaus txaus
• Ribs repositioned thiab dimensioned rau lub zog tsis muaj kev cuam tshuam cov tsos
• Lub rooj vag qhov chaw kho kom tsis txhob pom cov kab weld
• Cov cua txias tau hloov pauv rau qhov sib npaug ntawm qhov kub thiab txias

Cov ntsiab lus kawg

ABS V0 hloov npog tau ua tiav zoo kom ua tau raws li qhov xav tau ntawm kev ua haujlwm zoo thiab zoo nkauj. Cov kev txhim kho tseem ceeb muaj xws li cov phab ntsa tuab, cov hlua txuas ntxiv, qhov chaw ntawm lub qhov rooj zoo, thiab cov cua txias kom zoo. Qhov kawg tsim kom ntseeg tau siab -kev tsim khoom zoo nrog qhov tsis xws luag, kev ua haujlwm ruaj khov, thiab cov tsos zoo, npaj rau kev tsim khoom loj.