Tuam Tshoj ci seamless zirconium crucible rau melting hlau Chaw tsim tshuaj paus thiab tsum

ci seamless zirconium crucible rau melting hlau

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Ci seamless zirconium crucibles rau melting hlau yuav yog ib qho kev xaiv zoo rau kev siv kub. Zirconium paub txog nws qhov siab melting point thiab corrosion kuj, ua rau nws haum rau siv nyob rau hauv cov txheej txheem hlau melting.

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Dab tsi yog qhov kub ntawm zirconium crucibles?

Zirconium crucibles muaj qhov kub thiab txias, ua rau lawv haum rau ntau hom kev lag luam uas muaj cov hlau yaj thiab lwm yam txheej txheem kub. Qhov kub ntau ntawm zirconium crucibles feem ntau txuas los ntawm chav tsev kub txog li 2400 ° C (4352 ° F). Qhov kub muaj peev xwm ua rau zirconium crucibles zoo tagnrho rau melting siab melting point hlau xws li titanium, nickel thiab lwm yam refractory hlau.

Tsis tas li ntawd, zirconium qhov kev tiv thaiv corrosion thiab muaj peev xwm tiv taus qhov kub thiab txias ua rau nws muaj txiaj ntsig zoo rau kev siv hauv huab cua.

Dab tsi yog qhov txawv ntawm alumina thiab zirconia crucible?

Alumina thiab zirconia crucibles yog ob qho tib si feem ntau siv hauv cov ntawv thov kub, tab sis lawv muaj qee qhov sib txawv:

1. Khoom muaj pes tsawg leeg:
- Alumina crucibles yog ua los ntawm txhuas oxide (Al2O3), cov khoom siv ceramic paub txog nws cov thermal conductivity thiab cov tshuaj tiv thaiv zoo heev.
- Zirconia crucibles, ntawm qhov tod tes, yog ua los ntawm zirconium dioxide (ZrO2), tseem hu ua zirconia. Zirconia muaj lub zog siab, toughness thiab tsis kam rau thermal shock.

2. Melting point:
- Aluminium oxide muaj lub siab melting point, feem ntau nyob ib ncig ntawm 2050 ° C (3722 ° F), ua rau nws haum rau ntau yam kev siv kub.
- Zirconia muaj cov ntsiab lus melting ntau dua, feem ntau nyob ib puag ncig 2700 ° C (4892 ° F), ua rau nws tsim nyog rau cov ntawv thov uas xav tau qhov kub thiab txias.

3. Thermal conductivity:
- Aluminium oxide muaj cov thermal conductivity siab, uas muaj txiaj ntsig zoo nyob rau hauv qee yam kev siv uas qhov kev hloov pauv hluav taws xob yog qhov tseem ceeb.
- Zirconia muaj cov thermal conductivity qis dua piv rau alumina, uas yog qhov zoo rau hauv daim ntawv thov uas yuav tsum tau thermal rwb thaiv tsev.

4. Tshuaj tiv thaiv:
- Aluminium oxide muaj cov tshuaj tiv thaiv zoo, ua rau nws haum rau kev siv nrog ntau cov hlau molten thiab hnyav hnyav.
- Zirconia kuj nthuav tawm cov tshuaj tiv thaiv zoo heev, tshwj xeeb tshaj yog rau acidic thiab alkaline ib puag ncig, ua rau nws tsim nyog rau kev thov tshuaj siv tshuaj.

Nyob rau hauv cov ntsiab lus, thaum ob qho tib si alumina thiab zirconia crucibles yog tsim rau high-temperature daim ntaub ntawv, kev xaiv ntawm ob yog nyob ntawm tej yam yuav tsum tau xws li kub ntau yam, thermal conductivity, thiab tshuaj tiv thaiv.