Macrucibles akakosha emidziyo yemakemikari uye anoshanda semidziyo yekunyungudusa nekunatsa zvinwiwa zvesimbi, pamwe nekudziya uye kuita musanganiswa wakasimba-mumvura. Ivo vanoumba hwaro hwekuva nechokwadi chekuita kwakatsetseka kwemakemikari.
Crucibles inogona kukamurwa muzvikamu zvitatu zvikuru:graphite crucibles, crucibles yevhu, uye crucibles dzesimbi.
Graphite crucibles inonyanya kugadzirwa kubva kune yakasikwa crystalline graphite, ichichengeta akasiyana emuviri uye kemikari zvimiro zvechisikigo graphite. Ivo vane yakanaka thermal conductivity uye yakakwirira tembiricha kuramba. Munguva yekushandiswa kwepamusoro-tembiricha, ivo vanoratidza yakaderera kupisa kwekuwedzera coefficients, zvichiita kuti dzisagone nekudziya nekukurumidza uye kutonhora. Graphite crucibles ine yakasimba corrosion kuramba kune acidic uye alkaline mhinduro uye inoratidza yakanakisa kugadzikana kwemakemikari.
Nekuda kweaya epamusoro maitiro, magirafu crucibles anoshandiswa zvakanyanya mumaindasitiri akadai sesimbi, kukanda, michina, uye kemikari engineering. Ivo vanowana kushandiswa kwakakura mukunyungudutswa kwealloy tool simbi uye kunyungudutswa kwesimbi dzisina-ferrous nemaaloyi adzo, zvichipa zvakanakira tekinoroji nehupfumi.
Silicon Carbide Crucibles:
Silicon carbide crucibles midziyo yakaita mbiya yeceramic. Kana zvimedu zvichida kupiswa pakupisa kwakanyanya, macrucibles anodiwa nekuti anogona kumira tembiricha yakakwira zvichienzaniswa negirazi. Macrucibles kazhinji haazadzwe kusvika pakukwanisa panguva yekushandiswa kudzivirira zvinhu zvinodziya kuti zvisaduruke pamusoro, zvichibvumira mweya kupinda zvakasununguka uye kufambisa zvinogona kuitika oxidation. Nekuda kwechigadziko chavo chidiki, macrucibles anowanzo kuiswa pane yevhu yetatu yekudziya yakananga. Dzinogona kuiswa dzakati twasu kana pakona pane simbi katatu, zvichienderana nezvinodiwa zvekuedza. Mushure mekupisa, macrucibles haafaniri kuiswa pakarepo panzvimbo inotonhora yesimbi kuti adzivise kukurumidza kutonhora uye zvinogona kuputsika. Saizvozvowo, haafaniri kuiswa zvakananga pamusoro pehuni kudzivirira kupisa kana moto. Nzira chaiyo ndeyekutendera kuti macrucibles kuti atonhore ega padare resimbi kana kuaisa pamambure easbestos kuti atonhorere zvishoma nezvishoma. Mbato dzinoroverwa dzinofanirwa kushandiswa kubata.
Platinum Crucibles:
Platinum crucibles, yakagadzirwa nesimbi platinamu, inoshanda sezvimedu zvekusiyanisa zvinopisa zvinoyera uye zvinoshandiswa pakudziya zvisiri zvesimbi zvinhu, senge girazi fiber kugadzirwa uye girazi kudhirowa.
Ivo havafanirwe kusangana ne:
Mishonga yakasimba yakadai seK2O, Na2O, KNO3, NaNO3, KCN, NaCN, Na2O2, Ba(OH)2, LiOH, nezvimwewo.
Aqua regia, halogen mhinduro, kana mhinduro dzinokwanisa kugadzira halogens.
Misanganiswa yesimbi inodzikiswa zviri nyore uye simbi pachadzo.
Carbon-containing silicates, phosphorus, arsenic, sulfur, uye makomisheni avo.
Nickel Crucibles:
Kunyungudika kwenickel i1455 degrees Celsius, uye tembiricha yesample munickel crucible haifanire kudarika 700 degrees Celsius kudzivirira oxidation pakupisa kwakanyanya.
Nickel crucibles inopikisa zvakanyanya kune alkaline zvinhu uye ngura, ichiita kuti ive yakakodzera kunyungudutsa iron alloys, slag, ivhu, refractory zvinhu, nezvimwe. Nickel crucibles anofambirana nealkaline fluxes seNaOH, Na2O2, NaCO3, uye ayo ane KNO3, asi haafanirwe kushandiswa neKHSO4, NaHSO4, K2S2O7, kana Na2S2O7 uye sulfide fluxes nesarufa. Kunyunguduka munyu wealuminium, zinc, lead, tin, uye mecury zvinogona kuita kuti nickel crucibles brittle. Nickel crucibles haifaniri kushandiswa pakupisa mvura, uye borax haifaniri kunyungudutswa mairi.
Nickel crucibles kazhinji ine trace uwandu hwechromium, saka kungwarira kunofanirwa kuitwa kana, chikamu chavhiringwa.
Nguva yekutumira: Jun-18-2023