Silicon nitride ceramic seal bushing

Tsanangudzo Pfupi:

Silicon nitride ine zvirinani kupisa kutyisa kuramba kupfuura mamwe maceramics. Yakasanganiswa nesimba rakakwirira, kuderera kwekuwedzera kwemafuta, kumira kwakanaka kwekuora uye kuomarara kwekutsemuka, silicon nitride inowanzoshandiswa mune aerospace kana maindasitiri emotokari. Mamwe maapplication akadai seanopisa nozzles, yakanyungudutswa simbi processing, etc. Kudzivirirwa kwemagetsi, kumira zvakanaka kwecorrosion, yepakati tembiricha yekushanda (13000C), zvimiro zveceramics, yakanaka mechanical properties, yakaderera thermal kuwedzera, high thermal conductivity, yakanaka kwazvo thermal shock kugadzikana, yakaderera chaiyo. simba regiravhiti.

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Silicon nitride ndeye grey ceramic ine yakakwira kuputsika kusimba, yakanakisa kupisa kuvhundutsa kuramba, uye zvisingapindike zvivakwa kune simbi dzakanyungudutswa.

Uchishandisa hunhu uhu, inoiswa kune emukati mejini zvikamu zvakaita semota injini zvikamu, welding muchina blowpipe nozzles, nezvimwewo, kunyanya zvikamu zvinoda kushandiswa munzvimbo dzakaoma sekupisa.

Nekupokana kwayo kwepamusoro uye kusimba kwemagetsi, mashandisirwo ayo mukutakura zvikamu zvemaroller, inotenderera shaft mabhengi uye semiconductor yekugadzira michina yekugadzira zvinhu zvinogara zvichikura.

Zvivakwa zvesilicon nitride ceramics

1, ine simba rakakwirira mune yakakura tembiricha renji;

2, kuomarara kwakanyanya kwekutsemuka;

3, simba rekukotama rakanaka;

4, kuramba kuneta kwemagetsi uye kukambaira;

5, chiedza - low density;

6, kuomarara kwakanyanya uye kupfeka kusagadzikana;

7, yakanakisa yekupisa kuvhunduka kuramba;

8, kuderera kwekuwedzera kwekushisa;

9, insulator yemagetsi;

10, yakanaka oxidation kuramba;

11, yakanaka makemikari corrosion kuramba.

Silicon nitride ceramics ine yakaderera thermal yekuwedzera coefficient uye yakakwira yekupisa conductivity, saka ivo vane yakanakisa kupisa kutyisa kuramba. Iyo inopisa-yakadzvanywa sintered silicon nitride haizoputsika mushure mekupisa kusvika 1000 ℃ uye kuiswa mumvura inotonhora. Pakunyanya kupisa tembiricha, silicon nitride ine simba rakawanda uye kupikisa kwemaitiro, asi pamusoro pe1200 ℃ ichakuvadzwa nekukura kwekushandisa nguva, kuitira kuti simba rayo rideredze, kukonzeresa kuneta kukuvadzwa pamusoro pe1450 ℃, saka kushandiswa. yeSi3N4 tembiricha kazhinji haipfuure 1300 ℃.