kub kub tungsten alloy melting lauj kaub crucible rau kuaj
Qhov siab tshaj plaws kub ntawm tungsten crucible nyob ntawm cov khoom siv tshwj xeeb tungsten alloy thiab txheej txheem tsim khoom. Feem ntau hais lus, tungsten crucibles tuaj yeem tiv taus qhov kub siab tshaj 3000 ° C (5432 ° F), uas ua rau lawv tsim nyog rau kev ua cov ntaub ntawv uas yuav tsum tau kub heev, xws li melting thiab casting ntawm refractory hlau, ceramics, thiab lwm yam high-temperature. cov ntaub ntawv. Txawm li cas los xij, qhov tshwj xeeb alloy muaj pes tsawg leeg thiab muaj peev xwm cuam tshuam nrog cov khoom ua tiav yuav tsum tau txiav txim siab kom ntseeg tau tias qhov kev ua tau zoo tshaj qhov kub ntawm qhov xav tau.
Yog lawm, tungsten crucibles tuaj yeem siv nrog cov hlau sib txawv, tab sis nws yog ib qho tseem ceeb uas yuav tsum xav txog qhov sib xws ntawm cov khoom siv crucible nrog cov hlau tshwj xeeb ua tiav. Tungsten crucibles feem ntau raug xaiv rau lawv cov tsis kam mus rau qhov kub thiab txias thiab tshuaj lom neeg corrosion, ua rau lawv haum rau ntau yam hlau melting thiab ua daim ntaub ntawv. Txawm li cas los xij, qee cov hlau lossis hlau alloys tuaj yeem muaj kev cuam tshuam tshwj xeeb nrog cov khoom siv crucible, xws li cov tshuaj tiv thaiv lossis kev sib kis, uas yuav cuam tshuam rau cov khoom ua tiav. Yog li, cov ntaub ntawv crucible yuav tsum raug soj ntsuam rau kev sib raug zoo nrog cov hlau tshwj xeeb thiab cov alloys siv los xyuas kom meej qhov kev ntseeg ntawm melting thiab kev ua haujlwm. Tsis tas li ntawd, kev tu kom zoo thiab kev saib xyuas cov crucibles ntawm cov hlau ua haujlwm sib txawv yog qhov tseem ceeb kom tsis txhob muaj kev sib kis thiab ua kom muaj kev sib raug zoo.
High melting point alloys muaj xws li:
1. Tungsten-raws li alloy: tungsten muaj ib qho ntawm cov ntsiab lus melting siab tshaj plaws ntawm tag nrho cov hlau, thiab nws cov alloys xws li tungsten-rhenium, tungsten-molybdenum, thiab lwm yam kuj muaj cov ntsiab lus melting siab.
2. Molybdenum-based alloys: Molybdenum thiab nws cov alloys, xws li molybdenum titanium zirconium (TZM) thiab molybdenum lanthanum oxide (ML), muaj cov ntsiab lus melting siab thiab siv rau hauv cov ntawv thov kub.
3. Refractory hlau alloys: Alloys muaj refractory hlau xws li niobium, tantalum, thiab rhenium paub txog lawv cov ntsiab lus melting siab thiab siv nyob rau hauv high-temperature ib puag ncig.
Cov alloys no feem ntau siv rau hauv aerospace, kev tiv thaiv thiab kev siv hluav taws xob kub uas xav tau cov ntaub ntawv nrog cov cua sov zoo heev.
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