Dab tsi ua rau kub khiav cov khoom degradation tsis xws luag

Cov khoom yellowing, discoloration, dub kab, npuas, nkig zoo nkauj, thiab ib tug ceev txo nyob rau hauv mechanical qualities yog tag nrho cov cim qhia ntawm cov khoom thermal deterioration, ib tug ntau siab - qib tsis xws luag nyob rau hauv kub khiav txhaj molding ntau lawm. Batch khoom scrapping yuav tshwm sim los ntawm loj - cheeb tsam deterioration. Kev tswj kub ntawm lub xeev, cov khoom siv nyob hauv lub sijhawm, qhov tseeb ntawm cov thermocouple, thiab cov dej ntws hauv ib puag ncig yog qhov tseem ceeb uas cuam tshuam rau qhov tsis xws luag; Kev tiv thaiv zoo tuaj yeem ua tiav los ntawm kev txheeb xyuas qhov tseeb.

Cov yas deterioration feem ntau yog tshwm sim los ntawm qhov kub thiab txias hauv zos. Qhov tseeb ntawm qhov dej ntws channel kub yog ntau dua li qhov ntsuas kub thaum kub khiav thermocouples muaj qhov txawv txav tsis zoo hauv qhov ntsuas kub, uas ua rau cov khoom siv raw nyob hauv ib puag ncig kub heev rau lub sijhawm ntev. Cov yas cov saw hlau molecular yuav tawg thiab tawg, tso carbonized impurities thiab volatile gas uas ntws mus rau hauv pwm kab noj hniav nrog cov yaj los tsim ntau yam kev ua tau zoo thiab kev ua kom zoo nkauj flaws. Thermal deterioration feem ntau yuav tshwm sim nyob rau hauv cov ntaub ntawv uas rhiab heev, xws li PC, PET, thiab ntshiab optical plastics, thaum lawv yog me ntsis overheated.

Lwm qhov tseem ceeb -inducing qhov teeb meem yog ib tug ntev heev cov ntaub ntawv nyob rau lub sij hawm nyob rau hauv lub kub khiav khiav channel. Cov yaj nyob rau hauv siab -kub ntws channel rau lub sijhawm ntau yam tsis tau tso tawm thaum cov kab ntau lawm nres ib ntus, hloov pauv, lossis cov pwm raug kho. Ntev -lub sij hawm tas li- qhov kub thiab txias kuj tseem yuav ua rau cov ntaub ntawv nyoos maj mam muaj hnub nyoog thiab decompose, txawm tias tag nrho qhov ntsuas kub nyob hauv qhov kev tso cai. Cov ntaub ntawv zoo li qub tuaj yeem tsim tau yooj yim nyob rau hauv qhov chaw tuag thiab qhov chaw me me hauv cov manifold thiab nozzle flow channel, uas yog qhov chaw tseem ceeb rau carbonization thiab deterioration.

Cov ntaub ntawv raw yuav deteriorate sai dua nyob rau hauv ib tug tsis huv txaus channel ib puag ncig. Cov ntaub ntawv tshiab tsim nyog yuav sai sai thiab tawg vim yog catalytic degradation cov tshuaj tiv thaiv los ntawm residual cov qub carbon deposits thiab deteriorated impurities tshuav nyob rau hauv lub ntws channel tom qab tsim ua ntej. Tsis tas li ntawd, kev sib txuas cov khoom siv rov ua dua tshiab nrog cov ntaub ntawv uas tau rov qab siv ntev dhau lawm yuav txo qis thermal stability ntawm cov ntaub ntawv raw, ua rau lawv qhov tsis zoo rau siab - kub tawg hauv kub khiav.

Kev pheej hmoo degradation kuj tseem yuav nce ntxiv los ntawm qhov tsis tsim nyog qhov chaw cua sov sib piv thiab qhov ntsuas kub tsis ua haujlwm. Thermocouple tsis ua haujlwm ua rau cov cua sov ntawm ib tus neeg tuaj yeem tswj tsis tau, tsim kom muaj cov cua sov hauv cheeb tsam uas tig mus rau hauv cov chaw muaj zog rau cov khoom tawg. PID parameter tsis tsim nyog thiab pib nrawm heev- nce cua sov ceev kuj tseem yuav ua rau muaj qhov kub thiab txias overshoot, uas yuav muaj luv luv - lub sij hawm cuam tshuam rau qhov kub thiab txias thiab ua phem rau cov khoom siv raw.

Xyuas kom txhua qhov kub khiav thermocouples yog qhov tseeb thiab muaj txiaj ntsig txhawm rau txhawm rau tiv thaiv cov khoom tsis zoo. Tom qab ntawd, calibrate thiab hloov malfunctioning sensors tsis tu ncua kom tswj qhov kub thiab txias nyob rau hauv qhov zoo tagnrho kev nyab xeeb. Tsim kom muaj lub voj voog khiav ruaj khov, cov khoom siv tsis tu ncua tsis tu ncua thaum lub sijhawm kaw, thiab tswj xyuas cov khoom siv nyob hauv lub sijhawm. Txhawm rau kom txo qis qhov tshwm sim ntawm cov teeb meem thermal degradation, ua kom zoo dua qhov kub khiav sab hauv ntws channel tsim kom txo qis kev tuav cov fab tuag thiab phim qhov ntsuas kub ntsuas raws li ntau yam khoom siv thermal stability.