Impeta y'ikimenyetso cya Alumina Ceramic ifite ubushyuhe bwinshi ikoreshwa mu gufunga icyumba gifite ubushyuhe bwinshi
Impeta yo gufunga ya St.Cera yakozwe nk'igisimbura impeta za polymer O-rings mu turere dukomeye aho elastomers zangirika. Yakozwe muri alumina ya 99.8% ifite pure nyinshi (Al₂O₃), iyi mpeta yo gufunga ikoreshwa mu gufunga idahinduka - akenshi ihuzwa na gasket y'icyuma cyoroshye cyangwa grafiti - kugira ngo itange vacuum cyangwa gaze ihamye ku bushyuhe bugera kuri 800°C no mu duce twa plasma cyangwa chemical. Ibikoresho ntibitanga umwuka uvamo, imbaraga nyinshi zo gukanda (imbaraga zo gukanda 361 MPa), kandi ntibigira chemical inert (irwanya halogens, aside, na alkali usibye HF). Ubuso bwo gufunga bufite imiterere yihariye (ubugari bwa ≤5 μm, ubugari bwa Ra ≤0.2 μm) butuma icyuma cyangwa ceramic bivamo neza.
Ibisobanuro(hashingiwe kuri 99.8% Al₂O₃):
| Umutungo | Agaciro |
| Ibikoresho | 99.8% Alumina (Amahembe y'inzovu) |
| Ubucucike | 3.93 g/cm³ |
| Kunywa Amazi | 0% |
| Imbaraga zo Kongera Uburemere | 361 MPa |
| Imbaraga zo Gukanda (imaze kugaragara) | >2000 MPa |
| Ubukomere bwa Vickers | 16 GPa |
| Kwaguka k'ubushyuhe (25–1000°C) | 7.2×10⁻⁶/℃ |
| Ubushyuhe ntarengwa bwo gukora | 800°C (umwuka), 1600°C (ubushyuhe butagira icyo butwara) |
| Isozwa ry'ubuso (isura ifunga) | Ra ≤0.2 μm (ifite imigozi) |
| Ubugari (kuri mm 25) | ≤5 μm |
| Igipimo cyo Kuvoma kwa Heliyumu | <1×10⁻¹⁰ Pa·m³/s (hamwe n'agasanduku gakwiye) |
Porogaramu:
- · Ibikoresho bifunga by’icyuma gitunganya ibikoresho bya semiconductor (CVD, PVD, etch)
- · Ifuru ipfuka inzugi z'ifuru zishyushye cyane
- · Ibyuma bitanga umwuka ushyushye
- · Gufunga ubwato bukoresha amashanyarazi ya shimi
Uburyo bwo gukora:
Gukanda isostatic → gukaraba kuri 1600°C → gukora neza ku mpande ebyiri kugira ngo ubone uburyo bwo kuziba amaso neza kandi yoroshye → gukaraba impande → gusukura hakoreshejwe ultrasound. Buri mpeta ipimwa 100% ku gikoresho gipima amazi cya helium gifite gasket isanzwe y'icyuma.
Igenzura ry'Ubuziranenge:
- · Igenzura ry'ibipimo bya CMM (ID, OD, ubugari, uburinganire)
- · Igipimo cy'ubuso cya Ra na waviness
- · Gupima ubugari hakoreshejwe optique flat
- · Ikizamini cyo kuva amaraso muri Helium (uburyo bwo gushyira umugongo mu gitutu)
Ibyiza ugereranije n'impeta za polymer O:
- · Ihangane 800 ° C na <300 ° C kuri FFKM
- · Nta imyuka isohoka — nta kwanduza ibidukikije bidafite umwuka
- · Irwanya imiti yose yo mu maraso (fluorine, chlorine, ogisijeni)
- · Nta gipimo cyo gukanda cyangwa guhindagurika burundu
- · Igihe ntarengwa cyo gutanga serivisi ahantu hasukuye
Inzitizi (Amagambo y'ingenzi):
- · Ntabwo ari impeta ya O— ni impeta ikomeye ya ceramic isaba gasket yoroshye (umuringa, aluminiyumu, cyangwa grafiti) kugira ngo ifungwe.
- · Ntiyakira imikorere ihindagurika cyangwa imiterere y'urukiramende runini.
- · Igiciro cy'ibanze kiri hejuru ugereranyije n'impeta za polymer O, ariko igihe kirekire cyo kuzikoresha kigabanya ikiguzi cyo kuzitunga.
- · Koroshya — fata witonze; wirinde gukubita ingingo cyangwa gucika intege.
Icyitonderwa:Amakuru ari hejuru akurikira neza imbonerahamwe y'umutungo wa Al₂O₃ yatanzwe. Nta makuru y'ibikoresho bya elastomeric yatanzwe. Iki gicuruzwa ni impeta idahinduka, ntabwo ari impeta ya elastomeric O-ring. Nyamuneka yemeza niba byujuje ibisabwa mu gusaba kwawe.
