Cov xim sib xws yog qhov tseem ceeb hauv kev txhaj tshuaj molding, tshwj xeeb tshaj yog rau cov neeg siv khoom, tsheb sab hauv, thiab ntim khoom. Txawm tias qhov kub sib txawv me ntsis tuaj yeem ua rau pom qhov txawv ntawm qhov ntxoov ntxoo, streaks, lossis splay. Txij li cov thermocouples ncaj qha tswj qhov kub thiab txias, lawv muaj zog cuam tshuam xim stability. Yuav ua li cas raws nraim li cas thermocouples txiav txim xim uniformity nyob rau hauv kub khiav tshuab?
Kub ncaj qha cuam tshuam rau yaj viscosity thiab shear cua sov, uas hloov li cas colorants disperse nyob rau hauv polymer. Yog tias kev nyeem ntawv thermocouple tsis ruaj khov, qhov kub thiab txias hloov pauv, ua rau tsis sib xws ntawm masterbatch lossis pigment. Qhov no ua rau muaj streaks, pos huab, lossis xim txawv ntawm qhov chaw. Cov thermocouples ruaj khov tswj cov viscosity zoo ib yam, kom ntseeg tau cov xim sib txawv thoob plaws hauv kev tsim khoom.
Overheating tshwm sim los ntawm drifting thermocouples feem ntau ua rau cov xim fading lossis discoloration. Ntau cov pigments thiab additives yog tshav kub- rhiab heev thiab tawg ntawm qhov kub thiab txias. Thaum cov thermocouples drift siab, tus maub los overheats lub yaj, ua rau yellowing, darkening, los yog fading. Kev paub tseeb tiv thaiv qhov kub thiab txias thiab khaws cov xim zoo.
Kev hloov pauv kub ceev thaum pib lossis hloov xim tsim qhov ntxoov ntxoo tsis sib xws. Fast- teb cov thermocouples pab lub kaw lus kom ncav cuag qhov kub thiab txias yam tsis muaj overshoot, txo tus naj npawb ntawm tawm - xim pib qhov chaw. Qhov no txhim kho cov khoom siv tau zoo thiab txo cov khoom pov tseg thaum hloov pauv.
Hauv ntau-kab kab noj hniav pwm, qhov kub tsis sib xws los ntawm qhov tsis zoo ntawm cov thermocouples ua rau kab noj hniav - mus rau - kab noj hniav xim txawv. Yog tias ib lub nozzle khiav kub dua li lwm tus, cov xim yuav tshwm sim tsaus lossis sib dua hauv qhov kab noj hniav. Calibrated, matched thermocouples kom tsis txhob muaj cua sov thoob plaws txhua qhov chaw, tswj cov xim sib xws hauv txhua qhov kab noj hniav.
Shear- cov xim rhiab heev xav tau tshwj xeeb tshaj yog cov thermal stability. Qee cov pigments yooj yim agglomerate los yog degrade yog melt kub txawv. Precision thermocouples ua haujlwm nyob rau hauv lub qhov rais zoo tagnrho, tiv thaiv cov xim puas thiab ua kom cov npoo du, zoo ib yam.
Thermocouple muab tso rau ze ntawm lub taub hau lub taub hau txhim kho lub rooj vag - cheeb tsam xim stability. Lub rooj vag cheeb tsam tau ntsib qhov siab tshaj plaws shear thiab nrawm tshaj plaws, ua rau nws nkag siab txog qhov kub thiab txias. Zoo - tso cov sensors tswj kom raug, tshem tawm cov cim xim ze ntawm lub rooj vag.
Thaum lub sijhawm ua haujlwm ntev, drifting thermocouples ua rau maj mam hloov xim. Cov neeg ua haujlwm yuav tsis pom qhov hloov pauv kom txog thaum cov khoom sib piv rau cov qauv pom zoo. Tsis tu ncua calibration ntawm thermocouples tiv thaiv qeeb drift thiab tswj cov xim zoo ib yam dhau ntau lab lub voj voog.
Lub sijhawm nyob ntawm cov khoom siv cuam tshuam nrog qhov kub thiab txias kom cuam tshuam rau xim. Stagnant yaj nyob rau hauv overheated aav degrades sai, ua rau tsaus specks los yog streaks. Txhim khu kev qha thermocouples tsis txhob kub qhov chaw thiab tswj cov dej sib xws, txo cov kev pheej hmoo degradation.
Hauv cov ntsiab lus, kev ruaj ntseg xim nyob ntawm qhov tseeb ntawm cov thermocouple, cov lus teb ceev, thiab ntev -lub sij hawm stability. High -cov sensors zoo tiv thaiv tsis muaj xim, streaking, thiab ntxoov ntxoo variation, ua kom cov khoom ua tau raws li cov qauv kev pom zoo ib yam.
