Hot runner aging drift typically begins to show measurable changes after 10,000 hours of continuous operation (approximately 1.5 to 2 years). Initially, it manifests as a slow increase in temperature difference (+0.1 to 0.3°C per month). After entering the accelerated phase (>6 years or >50,000 hours), it may deteriorate at a rate of >1℃ib hlis. Tus nqi hloov pauv nyob ntawm qib khoom, qhov kub thiab txias, pib- nres zaus, thiab qib txij nkawm.
1. Hom Lub neej voj voog theem
|
Theem |
Lub sijhawm ua haujlwm |
Hloov yam ntxwv |
Kev lees txais |
|
Lub Sijhawm Stability |
0 ~ 10,000 teev |
Kev tswj qhov kub thiab txias, qhov kub sib txawv tsawg dua lossis sib npaug rau ± 2 degree, tsis muaj qhov cuam tshuam loj |
Ib txwm siv |
|
Thawj theem |
10,000 ~ 30,000 teev |
Terminal kub sib txawv maj mam nce mus rau ± 3 ~ 5 degree, puv sij hawm hloov pauv +0.3 vib nas this |
Yuav tsum tau txhim kho kev saib xyuas |
|
Kev nrawm nrawm |
>30,000 teev |
Temperature difference >± 5 degree, them nyiaj zog tshaj ± 15%, txwv rov qab tom qab tshem tawm cov pa roj carbon |
Kev pom zoo rau kev ntsuam xyuas thiab hloov |
Kev ntsuas cov ntaub ntawv: PET preform ntau lawm kab thawj zaug kuaj pom qhov sib txawv ntawm 4.2℃hla peb lub nozzles tom qab ob xyoos ntawm kev ua haujlwm; qhov no tau nce mus rau 8.5℃tom qab rau xyoo, nrog qhov nruab nrab txhua xyoo nce ntawm kwv yees li 0.7 degree.
2. Plaub yam tseem ceeb cuam tshuam rau tus nqi hloov pauv
Operating Temperature and Materials: Long-term operation at temperatures >300℃los yog ua tiav ntawm siab - cov ntaub ntawv kub xws li PC thiab PPS yuav ua rau kom muaj kev laus ntawm cov cua sov coils thiab cov thermocouples, uas yuav ua rau drift tshwm sim hauv 8,000 teev.
Start-Stop Frequency: Multiple daily hot and cold cycles (>3 zaug) yuav exacerbate thermal stress fatigue, ua rau microcracks thiab kev sib cuag tsis zoo, nce tus nqi drift los ntawm 2-3 zaug.
Kev Tswj Xyuas Zoo: Kev ua haujlwm ntawm kev tu cov pa roj carbon monoxide thiab tshuaj xyuas cov khoom txhua 5,000 teev tuaj yeem ua rau qis qis qis dua 30%, txuas lub neej ntev mus rau ntau dua 8 xyoo.
Kev Tswjhwm Kub Kub: Siv cov tswj kub hloov pauv xws li Delta 5 tuaj yeem txuas ntxiv lub sijhawm ruaj khov los ntawm 1.5 npaug los ntawm kev them nyiaj dynamic.
3. Yuav ua li cas thiaj txiav txim siab yog qhov System tau nkag mus rau "Hloov Theem"? Peb pom zoo kom siv ib qho ntawm cov xwm txheej hauv qab no los ua qhov taw qhia ntawm "drift tau tshwm sim":
Qhov sib txawv ntawm qhov sib txawv ntawm tib qhov chaw nce ntau dua lossis sib npaug li 2℃hauv peb qhov kev xeem sib law liag;
The filling time continuously increases by >0.8 vib nas this / hli;
Qhov siab tshaj plaws tso zis sib txawv ntawm qhov ntsuas kub txog ± 12% lossis ntau dua thiab tsis tuaj yeem kho.
Daim Ntawv Pom Zoo Ua Haujlwm: Tsim "Hot Runner Health Trend Chart," sau npe thiab txuas cov ntaub ntawv los ntawm txhua qhov kev xeem kom pom cov ntsiab lus cuam tshuam.
