Waya wa Tungsten: Amagwiritsidwa ntchito popanga ma tungsten-rhodium thermocouples ndi mitu yolumikizana mwachangu, mawaya omangika ndi safiro, ndi maelekitirodi a ma laser akulu.Amagwiritsidwanso ntchito popanga ma filaments apamwamba kwambiri komanso ma chubu cathodes.Mu 2005, mawaya amtundu wa tungsten-rhenium alloy opangidwa ndi kampani yathu adalembedwa ngati chinthu chatsopano chadziko lonse ndi Unduna wa Sayansi ndi Ukadaulo.
Waya wa Tungsten-rhenium thermocouple ali ndi malo osungunuka a 3120-3360 °C ndipo amatha kugwiritsidwa ntchito mpaka 3000 °C.Ndiye thermocouple yachitsulo yosamva kwambiri.Ili ndi ubwino wa ubale wabwino pakati pa kutentha ndi mphamvu ya electromotive, kukhazikika kwamafuta odalirika komanso mtengo wotsika.Imafanana ndi chida chowonetsera.Kutentha komwe kungayesedwe mwachindunji kumayesedwa pa kutentha pamwamba pa 1600 ° C.Njira yosalumikizana nthawi zambiri imagwiritsidwa ntchito.Komabe, cholakwika cha njirayi ndi chachikulu.Mwachitsanzo, kutentha kwa kukhudzana kumatha kuyeza kutentha kwenikweni.M'ma thermocouples otentha kwambiri, ma thermocouples amtengo wapatali (platinum-rhodium thermocouples) ndi okwera mtengo ndipo kutentha kwakukulu kumatha kukhala pansi pa 1800 ° C, pomwe ma tungsten-rhodium thermocouples samangokhala ndi malire a kutentha komanso kukhazikika bwino, motero, tungsten- rhodium thermocouples Amagwiritsidwa ntchito kwambiri muzitsulo, zomangira, zakuthambo, zandege ndi mafakitale amagetsi a nyukiliya.Kutentha kwake kwakukulu kumatha kufika 2800 ° C, koma kuposa 2300 ° C, deta imabalalitsidwa.Tungsten-rhenium thermocouples ndi oxidizable kwambiri, kotero amatha kugwiritsidwa ntchito mu vacuum, kuchepetsa, kapena mpweya wa mpweya pa kutentha kuyambira 0 mpaka 2300 °C.Mabanja a Tungsten bismuth omwe ali ndi machubu apadera otetezera angagwiritsidwenso ntchito kwa nthawi yaitali mu mpweya wa oxidizing pa 1600 ° C. Iwo ndi otsika mtengo kusiyana ndi platinamu-rhodium thermocouples ndipo sangagwiritsidwe ntchito mumlengalenga wokhala ndi carbon (monga hydrocarbon-containing atmospheres), Kutentha kopitilira 1200 ° C kumatha kuwononga).Tungsten kapena tungsten ruthenium imakonda kupanga ma carbides okhazikika mumlengalenga wokhala ndi mpweya, kotero kuti kukhudzika kwake kumatsitsidwa ndipo kuphulika kwa brittle kumachitika, ndipo pamaso pa haidrojeni, carbonization imathandizira.Kampaniyi imagwira ntchito popanga anti-oxidation tungsten-rhodium thermocouples.Kutentha koyenera ndi 0-1500 °C.Kapangidwe kameneka ndi kagawo kawiri kapena katatu (osagwiritsidwa ntchito kawirikawiri) chubu lotetezera.Chubu chakunja chachitetezo chachubu chodzitchinjiriza kawiri ndi chubu cha ultra-pure corundum.Chubu chachitetezo chamkati ndi chubu cha molybdenum silicide, ndipo chubu chakunja chachitetezo cha manja atatu ndi chubu chopangidwanso cha silicon carbide kapena chubu chapadera cha corundum, chubu chapakati ndi chubu chachitetezo chamkati ndizofanana ndi mitundu iwiri ya chubu, ndipo chodzaza chubu ndi zinthu zotchingira kutentha kwambiri (zitha kukhala zogwiritsidwa ntchito nthawi yayitali pansi pa 1800 ° C), kusindikiza vacuum ndi kusindikiza kozizira (zomatira zomatira zitha kugwiritsidwa ntchito kutentha kosachepera 300 ° C kwa nthawi yayitali) kuonetsetsa kuti ayi. mpweya wotsalira mu chubu.Izi ndizoyenera kugwiritsidwa ntchito mu vacuum, kuchepetsa ndi mipweya ina ya inert (0 ~ 1650 °C) Muyezo woyenera wa kutentha mumlengalenga wa oxidizing ndi 0 mpaka 1500 °C.Nthawi yosasintha: ≥180 s