Reaction-sintered silicon carbide rudzi rutsva rwezvigadzirwa zvesimbi zvemhando yepamusoro, zvine simba guru, kuomarara kwakanyanya, kuramba kupfeka zvakanaka uye kuramba ngura, uye zvinoshandiswa zvakanyanya mukugadzira simbi, petrochemical, zvemagetsi, aerospace nedzimwe nzvimbo. Chigadzirwa chine silicon carbide abrasive assistant carbon black, graphite nezvimwe zvinowedzera, uchishandisa nzira dzakaoma dzekudzvanya, extrusion kana kudurura kuti uwane mhando ine maburi, zvinotevera pamwe chete kuti tinzwisise nzira yekugadzira reactive sintering silicon carbide!
Kugadzira silicon carbide inonyungudutsa inochinja-chinja. Iyi inyaya yehunyanzvi yakatokura mushure mekuedza kwakawanda kwakaitwa nemugadziri kwemakore akawanda kusimudzira fomura yezvinhu zvakasvibiswa uye maitiro ekugadzira, kunyanya maitiro akasiyana ekugadzira silicon carbide.
Muchirevo chekutanga chekugadzirwa uku, huremu hwesilicon carbide powder hunosvika zvikamu 5-8, carbon black ine zvikamu 0.5-1.5, graphite ine zvikamu 1-1.5, uye binder ine zvikamu 0.1-0.5. Pakati pazvo, gradient yehukuru hwesilicon carbide i sic(90-30m) 3-5 zvikamu, sic) 30-0.8m) 2-3 zvikamu. methyl cellulose nePVA powder yemhara zvakaiswa mumvura yakakwana zvikamu 0.1-0.5 zvichiteerana, uye mhinduro yakajeka yakawanikwa mushure mekudziya.
1. Sanganisa marudzi ese ehupfu, manamati nemhinduro zvakagadzirwa zvichienderana nefomula wobva wasanganisa zvakanaka.
2, chenesai casting mold vacuum, svikai pa 0.1Mpa, moisa slurry yakasanganiswa ne pressure. Mushure menguva yakati, slurry inosunungurwa uye tupu inobviswa. Chengetai pa 30-70 kwemaawa 18-20 kuti iome.
3. Cheka chibato chebhiri zvichienderana nezvinodiwa nemufananidzo.
4, isa reaction sintering billet muchoto, wedzera huremu hwezvikamu 1-3 zvesimbi silicon, vacuum sintering. Maitiro acho akakamurwa kuita tembiricha yakaderera 0-700, inochengetwa kwemaawa 3-5; Tembiricha yepakati 700-1400, inochengetwa kwemaawa 4-6; Chengeta patembiricha yepamusoro 1400-2200 kwemaawa 5-7. Deredza tembiricha iri pasi pe150, misa choto wovhura choto.
5, chigadzirwa chekukuya pamusoro pesimbi yejecha, chine silicon slag, uye chinokuya pamusoro pesimbi yejecha.
6, zvigadzirwa zvekurapa oxidation muoxidation furnace, maawa makumi maviri nemana kusvika 1350, kutonhora kwechisikigo. Bvisa, tarisa woisa mudura.
Zvinhu zvakagadziriswa uye chiyero chakashandiswa nenzira yekugadzira iyi ndezvesainzi uye zvine musoro, kuitira kuti nzvimbo isina chinhu ive nechinhu chakakwana uye nzvimbo isina chinhu ive nehupamhi huri nani; Kupisa kuri nani, tembiricha uye nguva yekubata zvinoita kuti chigadzirwa chive nesimba rakanyanya kukotama. Kushanda kukuru uye mhando yenzira iyi zvasvika padanho repamusoro-soro repasi rose. Zviratidzo zvayo zvikuru ndeizvi zvinotevera
Kugadziriswa kwekushandiswa kwesilicon carbide chaiyo
Kufananidza 1 Nzira yekugadzira mabhurugwa esilicon carbide anogadzirwa ne reaction-sintered:
1, zvinhu zvakagadziriswa zvinotora huremu hwe namatidza hwezvikamu 0.3, wedzera huwandu hwemvura zvakaenzana kusanganisa, huremu hwezvikamu 6.8 zveupfu hwesilicon carbide (hukuru hwezvikamu zve90-30m zvezvikamu 3.8, 30-0.8m zvezvikamu 3), dema recarbon, 1 chikamu, dema
2. Pakudira, tanga wachenesa chiumbwa chashandiswa, gadzirisa chiumbwa, chigadzire nezvisungo, dhonza chiumbwa kubva mutangi nekudzvanya, zadza tangi ne 0.1Mpa pressure nitrogen, dururira chiumbwa, uye dzvanya chiumbwa muchimiro. Mushure mekusvika awa imwe, chiumbwa chinosunungurwa, uye mushure memaawa matanhatu, chiumbwa chinobviswa, zvinhu zvisina chinhu zvinobviswa, uye imba yekuomesa inoomeswa. 30-70, maawa 18-20 ekubvisa. 3. Pakugadzirisa chiumbwa, tanga watarisa kana chiumbwa ichi chichizadzisa zvinodiwa zvekugadzira. Pakuzadzisa zvinodiwa, gadzirisa chiumbwa zvichienderana nemufananidzo. Mushure mekuongorora, tumira kunzvimbo yekuomesa inopisa.
4. Kana hunyoro hwechinhu chinonyungudutsa mvura chasvika 1%, chibudise, chenesa chinhu chacho nemhepo inovhuvhuta wochiyera. Wedzera zvikamu 2.9 zvesimbi yesilicon. Nitrogen inogona kupombwa muchinhu chinonyungudutsa mvura. Nzira yekubvisa mvura pa700 tembiricha yakaderera kwemaawa mana; Tembiricha yepakati 1400, maawa mashanu; Tembiricha yepamusoro 2200, maawa matanhatu. Kana tembiricha yaderera kwemaawa gumi nemaviri yosvika 150, misa kushanda muchoto wovhura choto.
5. Kana chigadzirwa chekugadzirisa jecha chabuda, silicon standard Chartered pamusoro payo inogayiwa uye inogayiwa nejecha.
6. Chinangwa chezvigadzirwa zvekugadzirisa oxidation ndechekubvisa ma oxide anokonzerwa panguva yekupiswa kwechinhu. Chigadzirwa chinopiswa kusvika ku1350 kwemaawa makumi maviri nemana muchoto cheoxidation uye chozotonhodzwa zvakasikwa. Mushure mekubviswa, chinoiswa muchitoro kuburikidza nekuongorora.
Zvinhu zvakagadziriswa uye chiyero chakashandiswa nenzira yekugadzira iyi ndezvesainzi uye zvine musoro, kuitira kuti nzvimbo isina chinhu ive nechinhu chakakwana uye nzvimbo isina chinhu ive nehupamhi huri nani; Kupisa kuri nani, tembiricha uye nguva yekubata zvinoita kuti chigadzirwa chive nesimba rakanyanya kukotama. Kushanda kukuru uye mhando yezvigadzirwa zvakagadzirwa nenzira iyi zvasvika padanho repamusoro-soro repasi rose.
Iyi ndiyo nzira yekugadzira reactive sintering silicon carbide, kana uchida rumwe ruzivo, ndapota inzwa wakasununguka kutibata!
Nguva yekutumira: Chikumi-13-2023