Cov khoom thiab cov txheej txheem tsis ntawm yas txhaj tshuaj moulding muaj kev cuam tshuam los ntawm ntau yam. Txawv plastics yuav tsum tau tsim cov kev ua kom haum rau lawv cov peev txheej kom tau txais cov khoom siv zoo tshaj plaws.
Txhaj Tshuaj Molding Cov Ntsiab Lus yog raws li hauv qab no:
Ib, shrinkage tus nqi
Qhov cuam tshuam uas cuam tshuam rau kev tsim cov shrinkage ntawm thermoplastic plastics yog raws li hauv qab no:
1.types ntawm plastics
| Tsis muaj. | Yaslub npe | ShrinkageRtshuaj noj |
| 1 | Pa66 | 1% -2% |
| 2 | Pai | 1% -1.5% |
| 3 | Pa612 | 0.5% -2% |
| 4 | PBT | 1.5% -2.8% |
| 5 | PC | 0.1% -0.2% |
| 6 | Pom | 2% -3.5% |
| 7 | PP | 1.8% -2.5% |
| 8 | PS | 0.4% -0.7% |
| 9 | Pvc | 0.2% -0.6% |
| 10 | Abs | 0.4% -0.5% |
2.Qhov loj thiab qauv ntawm cov pwm pwm pwm. Kev siv hluav taws xob ntau dhau lossis cov khoom kom txias txias tuaj yeem cuam tshuam shrinkage. Tsis tas li ntawd, muaj cov txheej txheem thiab cov txheej txheem thiab kom muaj nuj nqis ntawm cov kev taw qhia ncaj qha cuam tshuam nrog kev faib tawm thiab kev faib tawm ntom ntom nti.
3.Qhov daim ntawv, loj thiab xa tawm ntawm cov khoom lub qhov ncauj. Cov xwm txheej no cuam tshuam rau cov kev taw qhia ntawm cov khoom ntws, ntom xa khoom, kev faib tawm ntom ntom thiab shrinkage nyhuv thiab sib sau ua ke.
4.NOLLE CUA THIAB KEV TXHAIS TAU ME NYUAM.
Pwm kub yog qhov siab, yaj ntom yog siab, yas shrinkage tus nqi yog siab, tshwj xeeb yog cov yas nrog siab crystallinity. Qhov ntsuas kub thiab txias thiab kub tsis sib xws ntawm cov khoom yas kuj tseem ceeb cuam tshuam rau cov dej nyab thiab kev taw qhia.
Siab tos thiab ntev kuj muaj cov nyhuv ntawm kev cog lus. Kev kub siab, ntev yuav thim tab sis cov kev taw qhia loj. Yog li ntawd, thaum cov pwm kub, siab, lub sijhawm nqus thiab lub sijhawm txias thiab lub sijhawm txias thiab lwm lub sijhawm kuj tseem tuaj yeem hloov qhov chaw nyab ntawm cov chaw yas.
Pwm Tsim raws li ntau cov yas pov tseg, cov duab yas, pub Inlet daim ntawv loj ntawm txhua feem ntawm cov yas, tom qab ntawd los laij cov kab tsuag loj.
Rau high-precision yas seem thiab nws yog qhov nyuaj rau kev nkag mus rau hauv cov hauv qab no los tsim cov pwm:
A) Tshem tawm cov kab yas me me hauv cov kab yas hauv cov kab rov qab thiab qhov chaw loj dua kom muaj chav kho tom qab kuaj cov pwm.
B) Kev Kuaj Pwm los txiav txim qhov Casting System, qhov loj me thiab kev ua haujlwm.
c) Qhov kev hloov pauv loj ntawm cov khoom yas kom raug muab rov txiav txim siab tau txiav txim siab tom qab reprocessing (ntsuas yuav tsum yog 24 teev tom qab stripping).
d) Hloov cov pwm raws li qhov tseeb shrinkage.
e) Kev tuag tuaj yeem rov los tau thiab muaj tus nqi shrinkage tuaj yeem hloov kho tus nqi me ntsis los ntawm kev hloov cov txheej txheem uas tsim nyog kom tau raws li cov khoom siv yas.
Thib ob,Kev ua kom ua kua
- Lub flougabity ntawm thermopastics feem ntau yog txheeb xyuas los ntawm cov cim hnyav, ua yeeb yam viscosity thiab ntws tawm (flow ntev / yas phab ntsa tuab). Txog tib lub npe, kev cai lij choj tshwj xeeb yuav tsum tau kuaj xyuas kom txiav txim siab seb lawv lub fluidity yog qhov haum rau kev txhaj tshuaj moulding.
Raws li cov qauv pwm tsim nyog yuav tsum tau ua, cov dej ntawm cov ziab khaub ncaws uas ib txwm siv tuaj yeem raug faib ua peb pawg:
a) Zoo fluidity ntawm PA, PE, PS, PP, CA thiab Polymethylthyretinoene;
b) Nruab Nrab Flunfen Polystyrene Resin (xws li tsis tas, xws li), PMMA, pom, Polypheny ether ether;
c) Tsis zoo rau lub ntsej muag PC, tawv PVC, polyphenyl ether, polysulfone, polyaromatic sulfone, fluorine yas.
- Lub fluidity ntawm ntau cov plastics kuj tau hloov vim muaj ntau yam kev sib sau. Lub ntsiab tseem ceeb yog raws li hauv qab no:
a) qhov ntsuas kub. Cov khoom siab kub yuav nce cov kev ua kom ntev, tab sis txawv plastics kuj txawv, pm, PMA, PM, PC, kev hloov pauv yas nrog qhov hloov kub. Txog rau PE, pom, ces kub nce thiab txo qis me ntsis cuam tshuam rau lawv lub cev.
b) siab. Txhaj Tshuaj Molding siab nce yaj los ntawm Shear Actional, kev ua kom tau txais, tshwj xeeb yog POM muaj kev nkag siab ntau ntxiv, yog li lub sijhawm txhaj tshuaj molding kom tswj tau qhov kev ntws.
c) Cov qauv tuag. Xws li pouring system daim ntawv, loj, txheej txheem, cua txias, tso tawm hauv cov khoom siv ntawm cov khoom siv molten hauv cov kab noj hniav.
Pwm Tsim Tsim yuav tsum yog raws li kev siv cov roj hmab txaus, xaiv tus qauv tsim nyog.
Lub Sijhawm Post: 29-10-21