I. Ua ntej-Kev Tiv Thaiv Kub Kub
Paub meej tias kub khiav Dryness: Xyuas kom cov kub khiav yog kom qhuav thiab txias, nrog ib tug ruaj khov rwb thaiv tsev tiv thaiv ntau tshaj los yog sib npaug zos rau 20MΩ. Tsis txhob ya raws seem uas tuaj yeem ua kom cov khoom siv hydrolysis thiab degradation.
Clean Residual Materials from the Runner: Ua ntej cua sov, ua kom tag nrho cov khoom seem ntawm cov neeg khiav dej num dhau los nrog tus neeg saib xyuas tu rau cov khoom siv sib xws. Qhov no tiv thaiv lub sijhawm overheating thiab decomposition ntawm cov khoom qub.
Txheeb xyuas qhov ntsuas kub ntsuas qhov tseeb: Ntsuas tag nrho cov ntsuas kub khiav ua ntej kom ntseeg tau tias qhov ntsuas kub ntsuas qhov sib txawv tsawg dua lossis sib npaug rau ± 1 degree. Qhov no tiv thaiv underestimation ntawm qhov tseeb kub, uas yuav ua rau overheating thiab degradation.
II. Staged Gradient Cua sov Control
Low Temperature Preheating Stage: Ua kom qhov kub ntawm chav tsev kub mus rau 30℃hauv qab cov khoom cua kub distortion kub, tswj cov cua kub ntawm 2℃/ feeb. Tuav rau 30 feeb kom tsis txhob muaj cua sov hauv zos.
Nruab Nrab Kub Hloov Theem: Ua kom qhov kub thiab txias kom qis dua ntawm cov khoom siv tau pom zoo ua haujlwm kub thiab tuav rau 20 feeb. Qhov no ua kom qhov ntsuas kub tsis sib xws thoob plaws hauv qhov kub khiav thiab tshem tawm cov chaw kub hauv zos.
Kev Kub Kub Ntau Lawm: Maj mam nce qhov kub mus rau qhov nruab nrab ntawm qhov kev pom zoo ua haujlwm kub rau cov khoom siv. Tsis txhob teem lub ntsuas kub ncaj qha mus rau sab sauv txwv. Tuav qhov kub li 15 feeb ua ntej pib pub khoom noj.
III. Melt Residence Time Control
Shorten Idle Heating Tos Sijhawm: Tom qab tus khiav kub mus txog qhov kub thiab txias, cov khoom noj thiab txhaj tshuaj molding yuav tsum ua kom tiav li ntawm 30 feeb. Kev tuav ntev ntev uas tso cai rau cov yaj kom nyob twj ywm hauv tus khiav yog txwv.
Optimize Runner Structure: Xyuas kom cov neeg khiav dej num kub tsis muaj qhov chaw tuag los yog khoov ntse kom tiv thaiv qhov chaw nyob hauv qhov chaw nyob ntev, uas tuaj yeem ua rau thermal degradation.
Kev ceev ceev ntawm kev kaw ib ntus: Yog tias cov cuab yeej ua haujlwm tsis zoo thaum lub sijhawm cua sov thiab cov khoom noj tsis tuaj yeem ua tiav raws sijhawm, tam sim ntawd txo qhov kub khiav kub kom qis dua cov khoom siv iav hloov kub kom txo tau qhov kev pheej hmoo ntawm thermal degradation.
IV. Kev hloov kho tshwj xeeb rau cov khoom sib txawv yooj yim degradable
Khoom siv PVC: Khaws ib qho me me ntawm inert nitrogen gas thoob plaws hauv cov txheej txheem cua sov. nruj me ntsis tswj qhov kub thiab txias ntawm 160 ~ 180 degree. Tsis txhob siab tshaj 200℃kom tiv thaiv kom txhob decomposition sai thiab tso tawm hydrogen chloride.
POM Khoom: Kev pub mis yuav tsum ua kom tiav li ntawm 15 feeb tom qab ncav cuag qhov kub thiab txias. Kev ua haujlwm kub yuav tsum tsis pub tshaj 220℃kom tsis txhob decomposition thiab formaldehyde gas tso.
PET Khoom: Ua ntej cua sov, xyuas kom cov chips qhuav tag nrog cov dej noo tsawg dua lossis sib npaug li 50ppm. Kev ua haujlwm kub yuav tsum tau tswj ntawm 260 ~ 280℃kom tsis txhob hydrolytic degradation ntawm qhov kub thiab txias.
V. Txheej Txheem Saib Xyuas thiab Teb Thaum Muaj Xwm Ceev
Kev ntsuas kub tsis tu ncua: Saib xyuas qhov ntsuas kub ntawm txhua qhov cua sov hauv lub sijhawm los ntawm kev tswj qhov kub thiab txias, lees paub qhov ntsuas kub sib txawv tsawg dua lossis sib npaug li ± 2℃thiab tsis muaj cov ntsiab lus overheating hauv zos.
Kev tuav ceev ceev ntawm Pre- Cov cim qhia kev puas tsuaj: Yog tias pom cov pa taws ntws los ntawm lub taub hau lossis cov pob daj tshwm hauv cov khoom ntws, nres tam sim ntawd. Hloov cov yaj hauv cov dej ntws sai sai nrog qhov qis - tus neeg saib xyuas qhov kub thiab txias los txheeb xyuas cov ntsiab lus kub dhau.
