Kho qhov kub thiab txias ntawm PP zaj duab xis blower kom tau txais cov yeeb yaj kiab zoo tshaj plaws yog ib txoj haujlwm nyuaj tab sis tseem ceeb uas cuam tshuam nrog kev tswj hwm ntawm ntau qhov chaw kub. Nov yog qee cov kauj ruam tseem ceeb thiab xav txog
Ua ntej, nkag siab txog cov yam ntxwv melting ntawm PP khoom
Lub melting kub ntau ntawm PP (polypropylene) feem ntau yog nyob nruab nrab ntawm 164-175 degree C. Qhov no yog lub hauv paus rau kev kho qhov kub thiab txias ntawm lub tshuab tshuab tshuab.
2. Kev teeb tsa thiab kho qhov kub thiab txias
Kev tswj qhov kub thiab txias ntawm lub tshuab tshuab tshuab feem ntau yog muab faib ua ob peb ntu tseem ceeb, suav nrog ntu pub mis, seem melting thiab seem homogenization (tseem hu ua seem metering), thiab tuag lub taub hau kub.
Kev them nyiaj seem:
Kev ntsuas kub: Qhov ntsuas kub ntawm qhov chaw pub mis yuav tsum qis kom tiv thaiv cov resin viscous flow blocking qhov chaw noj mov. Nws feem ntau yog teem caij nruab nrab ntawm 50-90 degree C, nyob ntawm seb cov khoom siv tshwj xeeb thiab cov dej ntws ntawm cov resin.
Txoj hauv kev hloov kho: xyuas kom meej tias cov resin tuaj yeem nkag mus rau theem melting, thaum tsis txhob degradation los ntawm overheating.
Melting seem:
Qhov kub thiab txias: Qhov kub ntawm qhov melting seem yuav tsum tau maj mam nce mus rau viscous flow kub ntawm PP, uas yog, ntawm 164-175 degree . Nyob rau theem no, cov resin yuav tsum tau yaj tag thiab sib tov sib npaug.
Kev kho lub hauv paus ntsiab lus: xyuas kom meej tias cov resin yog txaus melted thaum tsis txhob degradation thiab npuas tsim los ntawm overheating. Nws tuaj yeem txiav txim siab seb qhov ntsuas kub puas tsim nyog los ntawm kev soj ntsuam cov fluidity thiab xim ntawm cov molten resin.
Homogenization ntu:
Qhov kub thiab txias: Qhov kub ntawm qhov homogenizing seem yuav tsum ruaj khov, los yog me ntsis siab dua qhov kub ntawm qhov kawg ntawm qhov melting seem (txog 2-5 ° C), kom ntseeg tau tias cov yaj mus txog qhov kub thiab txias ua ntej. extrusion.
Kev hloov lub hauv paus ntsiab lus: Ua kom tsis tu ncua thiab sib xws ntawm cov yaj kom muab cov yaj zoo rau cov txheej txheem tom ntej tshuab tshuab.
Tuag kub:
Kev ntsuas kub: Tuag lub taub hau kub yuav tsum qis dua qhov kub ntawm qhov kawg ntawm homogenization seem, tab sis yuav tsum tsis txhob qis dua qhov kub ntawm PP. Qhov tshwj xeeb kub nyob ntawm qhov tuab thiab kev ua haujlwm ntawm cov yeeb yaj kiab.
Kev hloov lub hauv paus ntsiab lus: xyuas kom meej tias cov yaj muaj qee qhov viscosity ntawm lub taub hau tuag txhawm rau tsim cov yeeb yaj kiab ruaj khov, thaum tsis txhob muaj cov yeeb yaj kiab tawg thiab tawg.
3. Kev ua kom zoo ntawm kev tswj qhov kub thiab txias
Kaw-loop tswj: Lub kaw-voj kub tswj qhov system yog siv los saib xyuas qhov ntsuas kub tam sim no hauv lub sijhawm tiag tiag los ntawm lub sensor thiab sib piv nrog qhov ntsuas kub ua ntej kom hloov kho lub sijhawm ua haujlwm ntawm lub rhaub. Qhov no tuaj yeem txhim kho qhov tseeb thiab ruaj khov ntawm kev tswj qhov kub thiab txias.
High-precision sensor: Xaiv lub ntsuas kub-precision ntsuas thiab ntsuas nws tsis tu ncua kom ntseeg tau qhov tseeb ntawm qhov ntsuas kub.
Tsim nyog kev npaj ntawm lub rhaub: tsim nyog ntawm lub rhaub txoj hauj lwm, kom qhov kub thiab txias faib nyob rau hauv txhua cheeb tsam yog uniform, kom tsis txhob muaj overheating los yog undercooling tshwm sim.
Iv. Lwm yam kev ceev faj
Kev cuam tshuam ntawm ib puag ncig yam tseem ceeb: xyuam xim rau kev cuam tshuam ntawm ib puag ncig ib puag ncig (xws li chav tsev kub, av noo, thiab lwm yam) ntawm kev tswj qhov kub thiab txias, thiab siv cov kev ntsuas coj los txo nws qhov cuam tshuam.
Kev saib xyuas tsis tu ncua: Kev saib xyuas tsis tu ncua thiab kev saib xyuas ntawm lub tshuab tshuab zaj duab xis, ntxuav cov plua plav thiab roj ntawm qhov chaw ntawm cov yeeb nkab hluav taws xob, thiab tswj nws cov cua kub kom zoo.
Kev ntsuam xyuas cov yeeb yaj kiab zoo: los ntawm kev txheeb xyuas cov yeeb yaj kiab thickness, hardness, pob tshab thiab lwm yam kev ntsuas zoo, kev hloov kho raws sij hawm ntawm qhov ntsuas kub, txhawm rau kom tau txais cov yeeb yaj kiab zoo tshaj plaws.
