Ndezvipi zvinhu zvinopisa zvechoto chemuffle?

Izvo zvinodziya zvinhu zvechoto chemuffle zvinosanganisira waya dzemagetsi echoto, silicon carbide tsvimbo, uye silicon molybdenum tsvimbo.

Waya yechitofu chemagetsi:

Waya yechoto yemagetsi yakagadzirwa nesimbi-chromium-aluminium uye nickel-chromium magetsi ekupisa alloy waya. Simba rewaya yechoto rinodzorwa nekombuta, uye rinokuvadzwa nemuchina unomonereka unomhanya kwazvo. Inonyanya kusanganisira iron-chromium-aluminium alloy electric furnace waya uye nickel-chromium alloy electric furnace waya. Iyo yekutanga ndeye alloy zvinhu zvine ferrite chimiro, uye iyo yekupedzisira ndeye alloy zvinhu zvine austenite chimiro. Ose ari maviri chromium-aluminium alloy electric furnace waya uye nickel-chromium alloy electric furnace wire zvine nzvimbo yekunyunguduka iri pazasi pe1400 ℃, uye kazhinji ari pakupisa kwakanyanya (kupisa) pasi pemamiriro ekushanda, uye anowanzoita oxidation reaction. mumhepo nekupisa Zvakashata.

Silicon carbide tsvimbo:

Silicon carbide tsvimbo dzakaumbwa netsvimbo uye tubular isiri-metallic yakakwirira-tembiricha yemagetsi ekudziya zvinhu zvakagadzirwa nepamusoro-kuchena kwegirinhi hexagonal silicon carbide sechinhu chikuru mbishi. Mumhepo ine oxidizing, tembiricha yekushandisa yakajairika inogona kusvika 1450 ℃, uye kushandiswa kunoramba kuripo kunogona kusvika maawa 2000. Silicon carbide tsvimbo dzakaoma uye dzine brittle, dzinopesana nekutonhora nokukurumidza uye nekukurumidza kupisa, haisi nyore kuremara pakupisa kwepamusoro, uye inoshandiswa pakupisa kwepamusoro. Ivo vane hunhu hwekupisa tembiricha kuramba, oxidation kuramba, corrosion resistance, kukurumidza kupisa kusimuka, hupenyu hurefu, diki tembiricha deformation, kuisirwa nyore uye kugadzirisa, nezvimwewo, uye iwo akanaka Chemical kugadzikana.

Nekudaro, iyo silicon carbide rod element inogona kuve neanotevera mhedzisiro neokisijeni nemhute yemvura kana ichishandiswa kwenguva yakareba pamusoro pe1000 ℃:

①Sic+2O2→Sio2+CO2 ②Sic+4H2O=Sio2+4H2+CO2

Nekuda kweizvozvo, iyo SiO2 yemukati muchikamu inowedzera zvishoma nezvishoma, uye kuramba kunowedzera zvishoma nezvishoma, iko kuchembera. Kana iyo mhute yemvura yakawandisa, inosimudzira oxidation yeSiC. Iyo H2 inogadzirwa nekuita kweformula ② inosanganiswa neO2 mumhepo yobva yaita neH2O kugadzira denderedzwa rakashata. Deredza chikamu hupenyu. Hydrogen (H2) inogona kuderedza simba remagetsi rechikamu. Nitrogen (N2) iri pasi pe1200°C inokwanisa kudzivirira SiC kubva muoxidizing uye kuita neSiC pamusoro pe1350°C, kuitira kuti SiC iparadzwe nechlorine (Cl2) uye Sic inogona kuparara zvachose.

Silicon molybdenum tsvimbo:

Silicon molybdenum rods inogona kazhinji kushandiswa pakupisa kwechoto kwe1600°C-1750°C. Iwo anoshandiswa zvakanyanya musimbi, girazi, ceramics, magineti zvinhu, refractory zvinhu, makristasi, zvemagetsi zvikamu, kugadzira choto uye mamwe minda. Iwo anoshandiswa kune yakakwira-tembiricha sinter yezvigadzirwa* Iyo yakakodzera kupisa chinhu.

Iyo silicon molybdenum tsvimbo inoratidzirwa kune yakakwirira-tembiricha oxidizing mamiriro, uye quartz inodzivirira layer inoumbwa pamusoro pekudzivirira iyo silicon molybdenum tsvimbo kuti isarambe ichiwedzera oxidize. Kana tembiricha yechikamu ichikura kupfuura 1700 ° C, quartz protective layer inonyunguduka, uye chikamu chinoramba chichishandiswa mumhepo ine oxidizing, uye quartz yekudzivirira yekudzivirira inovandudzwa. Silicon molybdenum tsvimbo haifaniri kushandiswa kwenguva yakareba muhuwandu hwe 400-700 ℃, kana zvisina kudaro zvikamu zvichange zvakasvibiswa nekuda kwekusimba kwakasimba pakupisa kwakadzika.