Dab tsi tshwj xeeb kev txiav txim siab siv rau High-Tsev Engineering Plastics?

Kev tsim cov yas yas xws li PEEK, PPS, LCP, thiab cov nylon kub kub thawb kub khiav thermocouples rau lawv cov kev txwv. Cov ntaub ntawv no yuav tsum tau yaj kub ntawm 350℃thiab 420 degree, uas yog nyob ze los yog tshaj qhov siab tshaj plaws nruam ntsuam xyuas ntawm tus qauv K thermocouples. Nyob rau hauv cov huab cua kub no, oxidation accelerates, ua rau drift sai nyob rau hauv K-type sensors tshwj tsis yog tias lawv yog ua los ntawm tshwj xeeb high-purity alloys thiab thicker sheaths. Rau kev ua haujlwm ruaj khov siab dua 400 degree, Hom N thermocouples (Nicrosil-Nisil) tau pom zoo ntau ntxiv vim tias lawv muaj kev tiv thaiv oxidation zoo dua thiab thermal stability, txawm tias lawv tsis tshua muaj thiab raug nqi ntau dua. Cov ntaub qhwv yuav tsum yog Inconel 600 lossis txawm tias Superalloy 625, raws li tus qauv 304 stainless hlau yuav ntsuas thiab poob txhua yam muaj zog. Mineral rwb thaiv tsev (MgO) yuav tsum yog tuab heev thiab qhuav, vim tias cov dej noo yuav ua rau cov rwb thaiv tsev tsis zoo rau plummet ntawm qhov kub thiab txias. Kev txhim kho qhov tob dhau los ua qhov tseem ceeb tshaj vim tias thermal expansion ntawm pwm ntawm cov kub no tseem ceeb. Spring-loaded designs nrog high-force springs yog qhov tseem ceeb los tswj kev sojntsuam-rau-phab ntsa tiv tauj thoob plaws lub voj voog cua sov. Lwm qhov kev txiav txim siab tshwj xeeb yog qhov kev pheej hmoo ntawm tshuaj tua kab mob. Ntau cov yas kub kub muaj cov khoom ntim xws li iav fiber ntau, carbon fiber, los yog PTFE, uas tuaj yeem ua rau abrasive lossis tso tawm corrosive los ntawm cov khoom lag luam. Lub thermocouple lub raj tiv thaiv yuav tsum yog tuab txaus los tiv thaiv kev puas tsuaj, thiab qhov chaw txuas yuav tsum raug kaw kom tsis txhob muaj cov pa phem nkag mus. Cov lus teb ceev kuj tseem ceeb heev vim tias cov ntaub ntawv no degrade sai yog tias overheated - tsuas yog 5℃saum toj no qhov kev pom zoo tuaj yeem ua rau kev sib txuas, hloov pauv, lossis roj evolution. Yog li ntawd, tus maub los yuav tsum tau kho nrog PID nruj heev kom txo qis overshoot. Qee cov txheej txheem siv cov thermocouples rov ua dua -ib qho rau kev tswj hwm thiab ib qho rau kev nyab xeeb siab - los tiv thaiv pwm thiab tiv thaiv kev puas tsuaj loj. Vim tias tus nqi hloov pauv siab ntawm cov thermocouples no (feem ntau yog ob lossis peb npaug ntawm tus nqi ntawm cov qauv), ua tib zoo tuav thiab tiv thaiv kev saib xyuas ua lag luam ncaj ncees. Tsis tu ncua calibration ntawm cov txheej txheem kub yog yuav tsum tau, raws li drift uas tej zaum yuav tau txais ntawm 250℃yuav tsis tau txais ntawm 400 degree. Thaum qhia txog cov thermocouples rau cov yas kub kub, nco ntsoov sab laj nrog tus neeg muag khoom nrog cov khoom siv thiab qhov siab tshaj plaws ntawm kev ua haujlwm kub, thiab thov cov ntaub ntawv ntsuas uas siv tau ntev ntev ntawm cov xwm txheej ntawd.