Melt degradation yog ib qho kev pheej hmoo pheej hmoo hauv cov tshuab kub khiav, tshwj xeeb tshaj yog thaum ua cov cua sov-sensitive engineering plastics. Thermocouples ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv kev puas tsuaj ntawm polymer los ntawm kev tswj xyuas qhov tseeb, qhov kub thiab txias nyob rau hauv lub qhov rais ua haujlwm zoo.
Ntau cov yas, suav nrog PET, PBT, PC, thiab biodegradable resins, raug hloov tshuaj thaum raug kub los yog cua sov ntev. Degradation ua rau yellowing, brittleness, gas marks, dub specks, thiab txo txhua yam zog. Cov teeb meem no feem ntau tshwm sim los ntawm qhov ntsuas kub tsis raug es tsis yog cov neeg siv khoom tsis raug.
Thermocouples muab lub sijhawm tiag - tawm tswv yim los tiv thaiv overheating. Yog tias lub ntsuas ntsuas ua tsis tau lossis nyeem tsis raug, lub tshuab rhaub yuav txuas ntxiv ua haujlwm dhau qhov ntsuas kub zoo, ua rau cov polymer decomposition sai. Fast- teb cov thermocouples ntsuas qhov kub thiab txias tam sim ntawd thiab cia tus maub los txiav fais fab ua ntej kev puas tsuaj.
Kev faib tawm qhov kub tsis sib xws kuj tseem txo qhov chaw nyob -lub sij hawm kev ntxhov siab. Cov chaw kub ceev ceev degradation, txawm tias qhov nruab nrab kub zoo li raug. Thermocouples muab tso rau ntawm cov ntsiab lus tseem ceeb raws cov yaj channel txheeb xyuas qhov chaw overheating, ua kom muaj kev sib npaug ntawm cov cua sov hloov.
Kev tswj kub ruaj khov tshem tawm qhov tsis tsim nyog thermal cycling. Nquag spikes thiab tee nyob rau hauv qhov kub thiab txias ua rau muaj kev ntxhov siab nyob rau hauv cov saw hlau polymer, ua rau kom aging. Cov cua kub zoo ib yam, ruaj khov khaws cov khoom ruaj khov thiab txhim kho qhov zoo.
Rau qhov pob tshab lossis qhov muag pom, qhov degradation ua rau pom huab thiab tsis pom tseeb. Precision thermocouples tswj qhov ntsuas kub uas xav tau kom ua tiav qhov muag purity yam tsis muaj overexposure. Hauv daim ntawv thov kev kho mob, cov khoom siv degraded tuaj yeem tso tawm cov khoom tsis zoo, ua kom ntseeg tau qhov kub thiab txias tswj qhov yuav tsum tau muaj kev nyab xeeb.
Los ntawm kev ua kom qhov tseeb, teb, thiab ntsuas qhov ntsuas kub tsis sib xws, cov thermocouples ncaj qha tiv thaiv cov yas molten los ntawm thermal puas. Qhov no tsis tsuas yog txhim kho cov khoom zoo tab sis kuj txo cov khoom pov tseg thiab txo cov nqi tsim khoom.
