Kev Siv Tungsten Sheaths Txhim Kho Kev Ua Haujlwm ntawm Thermocouples li cas hauv cov xwm txheej hnyav?

tungsten sheaths muab cov txheej txheem melting ntau heev. Nyob rau hauv cov xwm txheej hnyav uas qhov kub thiab txias ntau dhau, suav nrog hauv ob peb txoj hauv kev ua lag luam lossis cov kev pab cuam hauv aerospace, cov khoom uas tsis tshua muaj melting yam yuav ua tsis tau sai. Tungsten muaj cov ntsiab lus melting ntau dhau, tso cai rau cov thermocouple tuaj yeem ntsib cov kub hnyav uas tsis muaj melting lossis deforming. Qhov no tso cai rau kev ntsuas qhov kub thiab txias hauv ib puag ncig uas cov khoom sib txawv tam sim no tsis tuaj yeem ua haujlwm.
Lawv muaj zog mechanical zoo heev. Cov xwm txheej hnyav heev feem ntau muaj ntau theem ntawm kev ntxhov siab, suav nrog kev vibrations, cuam tshuam, lossis siab. Tungsten yog cov ntaub uas muaj zog tag nrho uas tuaj yeem tiv thaiv cov rog tsis muaj kev tawg lossis deforming. Qhov no tiv thaiv cov thermocouple thiab lav nws qhov kev ua haujlwm tsis tu ncua txawm tias nyob rau hauv ib puag ncig hnyav.
Tungsten sheaths muaj pov thawj zoo heev tiv thaiv corrosion. Hauv qee qhov xwm txheej hnyav, muaj peev xwm tshaj tawm rau cov tshuaj corrosive. Tungsten yog pov thawj tiv thaiv ntau tus neeg ua haujlwm corrosive, ua kom paub tseeb tias cov thermocouple nyob twj ywm muaj txiaj ntsig thiab raug txawm nyob hauv qhov muaj cov ntsiab lus corrosive. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv cov kev pab cuam uas lub thermocouple yog uncovered rau tshuaj lom neeg tshuaj los yog sib txawv corrosive tshuaj.
Lawv muab txoj cai thermal conductivity. Txhawm rau kom lub thermocouple kom haum qhov ntsuas kub, nws xav tau nrog kev pom kom nrawm teb rau kev hloov pauv hauv qhov kub thiab txias. Tungsten muaj qhov sib txawv ntawm cov thermal conductivity ntau dhau, tso cai rau qhov sov so kom hloov ceev mus rau qhov sib txuas ntawm thermocouple. Qhov no cuam tshuam rau lub sij hawm tshwm sim sai dua thiab qhov ntsuas kub zoo dua nyob rau hauv cov xwm txheej hnyav uas qhov kev hloov pauv kub tuaj yeem tshwm sim sai.