Reaction-sintered silicon carbide imhando nyowani yemhando yepamusoro-tech ceramics, ine simba rakawanda, kuomarara kwepamusoro, kupfeka kwakanaka kusamira uye kushora, uye inoshandiswa zvakanyanya musimbi, petrochemical, zvemagetsi, aerospace nezvimwe minda. Chigadzirwa chine silicon carbide abrasive yekubatsira kabhoni dema, graphite uye akasiyana ekuwedzera, uchishandisa yakaoma kudzvanya, extrusion kana kudira nzira kugadzira porous mhando, zvino zvinotevera pamwe chete kuti unzwisise nzira yekugadzira ye reactive sintering silicon carbide!
Reactive sintering silicon carbide Iyo yakagadzirwa ndeye yakakura hunyanzvi hurongwa mushure mezviuru zvekuyedzwa nemugadziri kwemakore mazhinji kusimudzira iyo mbishi fomula uye maitiro ekugadzira, kunyanya yakasarudzika inoenderera mberi sintering process.
Mukutsvaga 1 yezvakagadzirwa, chikamu chinorema chesilicon carbide poda i5 ~ 8 zvikamu, kabhoni dema 0.5-1.5 zvikamu, graphite 1-1.5 zvikamu, uye binder 0.1-0.5 zvikamu. Pakati pavo, saizi yezviyo gradient yesilicon carbide ndeye sic (90-30m) 3-5 zvikamu, sic) 30-0.8m) 2-3 zvikamu. Iyo methyl cellulose uye PVA poda yemhara yakaiswa muhuwandu hwakakodzera hwemvura 0.1-0.5 zvikamu zvakateerana, uye mhinduro yakajeka yakawanikwa mushure mekupisa.
1. Sakanidza marudzi ose ehupfu, zvinonamatira uye zvinogadziriswa zvakagadzirirwa maererano nekugadzirisa uye funganisa zvakanaka.
2, chenesa iyo yekukanda mold vacuum, svika 0.1Mpa, kudzvanywa jekiseni reiyo yakasanganiswa slurry. Mushure meimwe nguva, slurry inosunungurwa uye isina chinhu inotorwa kunze. Ramba uri pa30-70 kwemaawa 18-20 kuti uome.
3. Cheka billet maererano nezvinodiwa zvekudhirowa.
4, isa reaction sintering billet muchoto, wedzera huremu hwe1-3 zvikamu zvesimbi silicon, vacuum sintering. Iyo nzira yakakamurwa kuita yakaderera tembiricha 0-700, yakachengetedzwa kwemaawa 3-5; Kupisa kwepakati 700-1400, chengeta kwemaawa 4-6; Chengetedza pakupisa kwepamusoro 1400-2200 kwemaawa 5-7. Donhedza tembiricha iri pasi pe150 kumisa choto uye uvhure choto.
5, jecha kuputika kurapwa kukuya chigadzirwa pamusoro pesilicon slag, ine jecha rinoputika.
6, oxidation kurapwa zvigadzirwa muvira oxidation, maawa makumi maviri nemana kusvika 1350, kutonhora kwepanyama. Bvisa, tarisa uye uise mudura.
Izvo zvinhu zvakagadziriswa uye chikamu chakagamuchirwa nenzira yekugadzirwa kwesayenzi uye inonzwisisika, kuitira kuti iyo isina chinhu ine voidage yakakwana uye iyo isina chinhu ine nani kuwedzera; Zvirinani sintering yekudziya mwero, tembiricha uye nguva yekubata inovimbisa yakakwira yekukotama simba rechigadzirwa. Kuita kukuru uye kunaka kweiyi nzira kwasvika padanho repamusoro repasi rose. Zviratidzo zvaro zvikuru ndezvinotevera
Reaction sintering silicon carbide chaiyo kuita
Embodiment 1 Nzira yekugadzira reaction-sintered silicon carbide bundles:
1, iyo mbishi kutora uremu hwekunamira hwezvikamu 0.3, wedzera imwe huwandu hwemvura zvakaenzana kubvongodza, huremu hwe6.8 zvikamu zvesilicon carbide upfu (saizi ye90-30m ye3.8 zvikamu, 30-0.8m yezvikamu zvitatu) , carbon black 1 part, black
2. Paunenge uchidira, tanga wachenesa mold yakashandiswa, gadzirisa mold, gadzirisa nezvisungo, dhonza slurry kunze kwetangi nekumanikidza, zadza tangi ne 0.1Mpa pressure nitrogen, ita kudira kudira, uye kusundira slurry muforoma. . Mushure mokusvika 1 awa, slurry inosunungurwa, uye mushure memaawa matanhatu, mold inobviswa, chinhu chisina chinhu chinotorwa kunze, uye imba yekuomeswa yakaomeswa. 30-70, 18-20 maawa kubvisa. 3. Paunenge uchigadzirisa chisina chinhu, tanga watarisa kana chisina chinhu chinosangana nezvinodiwa zvekugadzira. Paunenge uchisangana nezvinodiwa, gadzirisa chisina chinhu zvinoenderana nedhirowa. Mushure mekuongorora, tumira kune yakakwira tembiricha yekuomesa imba.
4. Mushure mokunge unyoro hwemhinduro sintering billet inosvika 1%, ibudise kunze, chenesa billet nemhepo inoputika uye uiyera. Wedzera 2.9 zvikamu zvesilicon simbi. Nitrogen inogona kupombwa muvacuum sintering. Sintering process pa700 yakaderera tembiricha kwemaawa mana; Kupisa kwepakati 1400, maawa mashanu; High tembiricha 2200,6 maawa. Kana tembiricha inodonha maawa gumi nemaviri uye inosvika 150, mira kushanda muchoto uye uvhure choto.
5. Mushure mokunge chigadzirwa chekurapa chejecha chinobuda, iyo silicon standard Chartered pamusoro payo inovhuvhuta uye yakakuya nejecha.
6. Chinangwa chemishonga yekurapa oxidation ndechekubvisa maokisi anogadzirwa panguva yekupisa. Chigadzirwa chacho chinodziiswa ku1350 kwemaawa makumi maviri nemana muchoto cheoxidation uye chobva chatonhodzwa zvega. Mushure mekubviswa, inoiswa mukuchengetedza kuburikidza nekuongorora.
Izvo zvinhu zvakagadziriswa uye chikamu chakagamuchirwa nenzira yekugadzirwa kwesayenzi uye inonzwisisika, kuitira kuti iyo isina chinhu ine voidage yakakwana uye iyo isina chinhu ine nani kuwedzera; Zvirinani sintering yekudziya mwero, tembiricha uye nguva yekubata inovimbisa yakakwira yekukotama simba rechigadzirwa. Kuita kukuru uye kunaka kwezvigadzirwa zvinogadzirwa nenzira iyi zvasvika padanho repamusoro repasi rose.
Iyo iri pamusoro ndiyo nzira yekugadzira ye reactive sintering silicon carbide, kana iwe uchida rumwe ruzivo, ndapota inzwa wakasununguka kutibata nesu!
Nguva yekutumira: Jun-13-2023