Puas yog Discolored Cartridge Heater Surface yog ib qho teeb meem zoo? Tsis txhob dhia mus rau qhov xaus

Qee cov neeg siv khoom yuav pom qhov tsaus nti lossis xim tsis zoo ntawm cov khoom siv hluav taws xob thiab xav tam sim ntawd tias muaj teeb meem zoo thiab thov kom rov qab los. Nws yog ib qho tseem ceeb kom paub, txawm li cas los xij, qhov tsaus ntuj lossis me ntsis oxidised nto ntawm lub tshuab cua sov stainless hlau feem ntau yog ntuj thiab tsis yog ib qho teeb meem. Qhov tseem ceeb tshaj plaws yog qhia qhov txawv ntawm cov xim oxidation ib txwm thiab cov tsos mob ntawm overheating puas. Yog tias koj tsis ua, koj tuaj yeem xaus rov qab cov khoom uas tsis tawg thiab ncua kev tsim khoom.

Thaum stainless hlau tau kub, nws tsim ib txheej nyias ntawm chromium oxide ntawm nws qhov chaw uas tiv thaiv nws. Cov txheej txheem no, hu ua passivation, tiag tiag ua rau cov khoom tsis tshua muaj xeb. Cov xim ntawm cov oxide txheej no tuaj yeem yog nyiaj -dawb, lub teeb daj, kub, xim av, lossis txawm xiav -violet, nyob ntawm seb nws kub npaum li cas thiab nws nyob ntev npaum li cas. Metallurgists paub ntau txog cov txheej txheem no, uas yog hu ua temper colouring. Cov txheej oxide feem ntau tsuas yog ob peb microns tuab thiab tsis hloov lub tshuab ua kom sov zoo li cas lossis nws muaj zog npaum li cas. Cov txheej tiv thaiv no yeej nres lub hauv paus hlau los ntawm oxidizing ntau dua. Nws yog ib qho uas tshwm sim hauv cov cua sov uas tau siv los ntawm qhov kub thiab txias.


Yog tias muaj cov hmoov dub rau ntawm qhov chaw uas tuaj yeem muab tshem tawm nrog tus ntiv tes, qhov no tuaj yeem txhais tau tias magnesium oxide rwb thaiv tsev tsis tau compacted zoo los yog muaj impurities nyob rau hauv cov ntaub ntawv sheath, uas yog ib tug tiag tiag zoo teeb meem. Cov hmoov seem no feem ntau tshwm sim los ntawm cov khoom oxidation los ntawm sab hauv cov ntaub tawm los ntawm qhov me me. Rust- cov xim thaj ua rau thaj yog lwm qhov kos npe tias muaj qee yam tsis raug. Lawv tuaj yeem txhais tau tias cov hlau tsis zoo yog qhov tsis zoo lossis lub tshuab cua sov tau nyob rau hauv qhov xwm txheej corrosive uas phem tshaj qhov nws tau ntsuas rau.

A simple field test can help you figure out how good a heater is. To do this, clean the surface with a solvent to get rid of any oil or residue. Then, turn on the heater in open air at its rated voltage until it glows red (for sheaths that can handle such high temperatures). Let it cool down, and then wipe the surface with a clean white paper towel. If there are no black powder traces, it means that the material and the way it was made are probably good. Even though this method isn't scientific, it's useful for the first step of screening. Reputable manufacturers put their devices through strict factory testing. This includes checking for insulation resistance (usually >100 megohms ntawm chav tsev kub), lub zog dielectric (1500V rau ib feeb), thiab lub zog hloov pauv (± 5-10% nyob ntawm qhov tshwj xeeb).

Cov xim ntawm qhov chaw ntawm txoj cai- lub kaum sab xis ntawm cov hlau lead cartridge tso cua sov kuj tseem tuaj yeem hloov pauv thaum khoov yog tias siv cov txheej txheem annealing. Qhov chaw uas khoov yuav tsum tau rhuab mus rau lub recrystallisation kub, uas feem ntau yog nyob ib ncig ntawm 1050℃rau stainless hlau, thiab ces txias. Cov txheej txheem no tuaj yeem ua rau cov xim oxidation hauv cheeb tsam uas zoo li txawv ntawm qhov seem ntawm lub cev cua sov. Tsuav yog cov oxide txheej no txawm thiab lo, nws tsis cuam tshuam kev ua haujlwm. Yog tias qhov zoo ib yam tseem ceeb heev rau kev siv qee yam, yog vim li cas rau kev zoo nkauj lossis ua kom tau raws li cov neeg siv khoom xav tau, koj tuaj yeem thov rau kev tshaj tawm ntxiv -kev ua haujlwm xws li pickling thiab passivation lossis electropolishing. Txawm li cas los xij, qhov no yuav raug nqi ntau dua thiab siv sijhawm ntev dua.

Localized overheating, uas qhia tau hais tias yog qhov tseem ceeb ntawm qhov tsis muaj xim, pitting, los yog nto craters ntawm ib feem ntawm lub rhaub, yog qhov koj yuav tsum tau txhawj xeeb tiag tiag. Qhov no tuaj yeem txhais tau hais tias qhov kev tiv thaiv xaim qhwv tsis yog, tias muaj qhov kub kub tshwm sim los ntawm lub zog ntau dhau, lossis qhov kev sib cuag thermal nrog qhov nruab nrab ib puag ncig tsis zoo. Cov teeb meem no tuaj yeem txwv lub neej ntawm lub tshuab cua sov thiab xav kom nws hloov. Blackening ntawm cov hlau lead tawm qhov taw tes yog lwm cov tsos mob ntawm teeb meem. Qhov no feem ntau txhais tau hais tias lub foob tsis zoo txaus thiab noo noo nkag mus rau hauv, uas ua rau oxidation hauv lub cuab yeej. Qhov xwm txheej no feem ntau txo qis qhov kev tiv thaiv insulating (feem ntau qis dua 10 megohms) thiab tuaj yeem ua rau muaj kev phom sij vim nws tuaj yeem ua rau hluav taws xob los yog luv luv.

Txoj kev zoo li lub tshuab rhaub kuj tseem hloov tau nyob ntawm qhov chaw nws khaws thiab siv. Yog tias cov hlau tsis muaj hlau tsis zoo los yog tsis tau ua kom huv si, nws tuaj yeem xeb ntawm qhov chaw yog tias nws khaws cia rau hauv qhov chaw ntub dej ntev. Pitting corrosion tuaj yeem tshwm sim txawm tias ntawm 316 stainless hlau yog tias nws tuaj yeem tiv nrog cov tshuaj chlorine - muaj cov tshuaj, xws li qee cov khoom siv tu lossis dej ntsev. Cov teeb meem no tsis yog qhov tsis zoo ntawm cov khoom nws tus kheej; lawv tshwm sim thaum cov khoom siv nyob rau hauv txoj kev uas nyob sab nraum nws cov ciam teb. Thaum xaiv cov txheej txheem, nws yog ib qho tseem ceeb uas yuav tsum tau piav qhia meej txog qhov chaw ua haujlwm, nrog rau qhov kub thiab txias, lub tshuab yuav voj voog ntau npaum li cas, thiab nws yuav raug tshuaj lom neeg ntau npaum li cas. Txoj kev no, cov chaw tsim khoom tuaj yeem qhia cov ntaub ntawv zoo, xws li Incoloy rau siab - daim ntawv thov kub lossis 316L kom zoo dua corrosion.

Thaum kawg, lub tshuab hluav taws xob cartridge yog ib feem uas ua haujlwm, tsis yog ib qho uas zoo. Nws cov kev ua tau zoo specs, xws li lub zog tso zis, rwb thaiv tsev tsis kam, thermal teb, thiab lub neej, yog qhov tseem ceeb tshaj qhov nws zoo li. Ib tus kws tshaj lij tsim khoom, ntawm qhov tod tes, yuav sim ua kom huv, txawm tias ua tiav thaum ua kom cov khoom ua tau zoo, uas qhia txog qhov zoo ntawm lawv cov txheej txheem tag nrho. Thaum muas ib yam dab tsi, nws yog ib lub tswv yim zoo los saib ob qho tib si ntawm qhov zoo thiab kev saib xyuas kom meej. Ob yam no tuaj yeem pab koj txiav txim rau tus neeg muag khoom tag nrho cov txuj ci thiab kev mob siab rau. Tau txais lub Hoobkas kuaj cov ntaub ntawv thiab cov ntaub ntawv pov thawj yog ib txoj hauv kev zoo kom paub tseeb tias qhov zoo tshaj qhov tsuas yog saib cov khoom.