Reaction-sintered silicon carbide yog ib hom tshiab ntawm high-tech ceramics, uas muaj lub zog siab, siab hardness, zoo hnav tsis kam thiab corrosion kuj, thiab yog dav siv hauv metallurgy, petrochemical, electronics, aerospace thiab lwm yam kev lag luam. Cov khoom nrog silicon carbide abrasive auxiliary carbon dub, graphite thiab ntau yam additives, siv qhuav nias, extrusion los yog pouring txoj kev ua porous zoo, ces cov nram qab no ua ke kom nkag siab txog cov txheej txheem ntawm reactive sintering silicon carbide!
Reactive sintering silicon carbide Lub invention yog ib tug kuj paub tab txheej txheem tom qab ntau txhiab qhov kev ntsuam xyuas los ntawm tus inventor rau ntau xyoo los txhawb cov raw khoom formula thiab ntau lawm txheej txheem, tshwj xeeb tshaj yog cov cim nruam sintering txheej txheem.
Hauv kev thov 1 ntawm qhov kev tsim, qhov hnyav ntawm silicon carbide hmoov yog 5 ~ 8 qhov chaw, carbon dub yog 0.5-1.5 qhov chaw, graphite yog 1-1.5 qhov chaw, thiab binder yog 0.1-0.5 qhov chaw. Ntawm lawv, cov nplej loj gradient ntawm silicon carbide yog sic (90-30m) 3-5 qhov chaw, sic) 30-0.8m) 2-3 qhov chaw. Cov methyl cellulose thiab PVA hmoov ntawm gazelle tau muab tso rau hauv qhov tsim nyog ntawm cov dej 0.1-0.5 feem, thiab cov tshuaj pob tshab tau txais tom qab cua sov.
1. Sib tov txhua yam hmoov, nplaum thiab cov kev daws teeb meem npaj raws li cov qauv thiab do zoo.
2, ntxuav lub tshuab nqus tsev casting, ncav cuag 0.1Mpa, siab txhaj tshuaj ntawm cov slurry sib xyaw. Tom qab ib lub sijhawm, cov slurry raug tso tawm thiab qhov khoob raug tshem tawm. Khaws ntawm 30-70 rau 18-20 teev kom qhuav.
3. Trim lub billet raws li qhov yuav tsum tau ntawm daim duab.
4, muab cov tshuaj tiv thaiv sintering billet rau hauv qhov cub, ntxiv qhov hnyav ntawm 1-3 feem ntawm cov hlau silicon, lub tshuab nqus tsev sintering. Cov txheej txheem tau muab faib ua qhov kub qis 0-700, khaws cia rau 3-5 teev; Nruab nrab kub 700-1400, khaws cia rau 4-6 teev; Khaws ntawm qhov kub ntawm 1400-2200 rau 5-7 teev. Muab qhov kub thiab txias qis dua 150 nres lub qhov cub thiab qhib lub qhov cub.
5, xuab zeb blasting kev kho mob sib tsoo khoom nto silicon slag, nrog xuab zeb blasting sib tsoo.
6, oxidation kho cov khoom rau hauv lub qhov cub oxidation, 24 teev rau 1350, ntuj txias. Tshem tawm, kos thiab muab tso rau hauv qhov chaw cia.
Cov ntaub ntawv raw thiab kev faib ua feem tau txais los ntawm cov txheej txheem ntawm kev tsim khoom yog kev tshawb fawb thiab tsim nyog, yog li ntawd cov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob. Zoo dua sintering cua sov tus nqi, kub thiab tuav lub sij hawm kom lub siab dabtsi yog khoov zog ntawm cov khoom. Qhov kev ua tau zoo thiab kev ua tau zoo ntawm txoj kev no tau mus txog qib siab thoob ntiaj teb. Nws lub ntsiab ntsuas yog raws li nram no
Cov tshuaj tiv thaiv sintering silicon carbide tshwj xeeb siv
Embodiment 1 Txoj Kev rau kev tsim cov tshuaj tiv thaiv-sintered silicon carbide bundles:
1, cov khoom siv raw coj cov nplaum hnyav ntawm 0.3 feem, ntxiv ib qho dej sib npaug sib npaug, qhov hnyav ntawm 6.8 feem ntawm silicon carbide hmoov (particle loj ntawm 90-30m ntawm 3.8 feem, 30-0.8m ntawm 3 qhov chaw) , carbon dub 1 feem, dub
2. Thaum pouring, thawj zaug ntxuav cov pwm siv, kho cov pwm, kho nws nrog fasteners, kos cov slurry tawm ntawm lub tank nrog siab, sau lub tank nrog 0.1Mpa siab nitrogen, ua rau siab pouring, thiab thawb lub slurry rau hauv pwm. . Tom qab ncav cuag 1 teev, cov slurry raug tso tawm, thiab tom qab 6 teev, cov pwm raug tshem tawm, cov khoom seem raug tshem tawm, thiab chav ziab qhuav qhuav. 30-70, 18-20 teev kom tshem tawm. 3. Thaum kho qhov khoob, ua ntej xyuas seb qhov khoob puas ua tau raws li cov qauv tsim. Thaum ua tau raws li qhov yuav tsum tau ua, kho qhov khoob raws li daim duab kos. Tom qab kuaj xyuas, xa mus rau qhov kub kub kom qhuav.
4. Tom qab cov dej noo ntawm cov tshuaj tiv thaiv sintering billet nce mus txog 1%, tshem tawm, ntxuav lub billet nrog cua tshuab thiab ntsuas nws. Ntxiv 2.9 qhov chaw silicon hlau. Nitrogen tuaj yeem tso rau hauv lub tshuab nqus tsev sintering. Sintering txheej txheem ntawm 700 qhov kub thiab txias rau 4 teev; Nruab nrab kub 1400, 5 teev; Kub kub 2200,6 teev. Thaum qhov kub thiab txias poob 12 teev thiab nce mus txog 150, nres qhov kev ua haujlwm hauv qhov cub thiab qhib lub qhov cub.
5. Tom qab cov khoom kho sandblasting tawm los, cov txheej txheem silicon Chartered ntawm nws qhov chaw yog hauv av thiab grinded nrog sandblasting.
6. Lub hom phiaj ntawm cov khoom kho oxidation yog tshem tawm cov oxides tsim thaum lub sij hawm sintering. Cov khoom yog rhuab mus rau 1350 rau 24 teev nyob rau hauv lub qhov cub oxidation thiab ces txias lawm. Tom qab tshem tawm, nws yog muab tso rau hauv cia los ntawm kev soj ntsuam.
Cov ntaub ntawv raw thiab kev faib ua feem tau txais los ntawm cov txheej txheem ntawm kev tsim khoom yog kev tshawb fawb thiab tsim nyog, yog li ntawd cov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob. Zoo dua sintering cua sov tus nqi, kub thiab tuav lub sij hawm kom lub siab dabtsi yog khoov zog ntawm cov khoom. Lub ntsiab kev ua tau zoo thiab zoo ntawm cov khoom tsim los ntawm txoj kev no tau mus txog qib siab thoob ntiaj teb.
Cov saum toj no yog cov txheej txheem ntau lawm ntawm reactive sintering silicon carbide, yog tias koj xav tau cov ntaub ntawv ntau ntxiv, thov koj xav tiv tauj peb!
Post lub sij hawm: Jun-13-2023