Indlela Yokulungiselela Ye-High-Strength Graphite Silicon Carbide Crucible for Metal Smelting

Indlela yokulungiselela yamandla aphezului-graphite silicon carbide crucibleukuncibilikisa insimbi kuhlanganisa lezi zinyathelo ezilandelayo: 1) ukulungiswa impahla eluhlaza; 2) ukuxuba okuyinhloko; 3) ukomisa impahla; 4) ukuchotshozwa nokuhlolwa; 5) ukulungiswa kwempahla yesibili; 6) ukuxuba kwesibili; 7) ukucindezela nokubumba; 8) ukusika nokusika; 9) ukomisa; 10) ukucwebezela; 11) ukudubula okuyinhloko; 12) ukukhulelwa; 13) ukudubula kwesibili; 14) ukugqoka; 15) umkhiqizo ophelile. I-crucible ekhiqizwa kusetshenziswa le fomula entsha kanye nenqubo yokukhiqiza inokumelana okuqinile nezinga lokushisa eliphezulu kanye nokumelana nokugqwala. Isilinganiso sokuphila se-crucible sifinyelela ezinyangeni ezingu-7-8, sinesakhiwo sangaphakathi esifana nesingenasici, amandla aphezulu, izindonga ezincane, kanye nokuhamba kahle kwe-thermal. Ukwengeza, ungqimba olucwebezelayo kanye nokunameka okungaphezulu, kanye nezinqubo eziningi zokumisa nezokudubula, kuthuthukisa kakhulu ukumelana nokugqwala komkhiqizo futhi kunciphisa ukusetshenziswa kwamandla cishe ngo-30%, ngezinga eliphezulu le-vitrification.

Le ndlela ihilela insimu ye-non-ferrous metallurgy casting, ikakhulukazi indlela yokulungiselela i-high-strength graphite silicon carbide crucible yokuncibilikisa insimbi.

[Ubuchwepheshe Basemuva] Izihluthulelo ezikhethekile ze-graphite silicon carbide zisetshenziswa ikakhulukazi ezinqubweni zokuphonswa kwensimbi ezingenayo ayoni kanye nezinqubo zokubumba, kanye nokubuyiswa nokucwengisiswa kwezinsimbi eziyigugu, kanye nokukhiqizwa kwemikhiqizo engashisi kakhulu nekwazi ukumelana nokugqwala edingekayo kumapulasitiki, izitsha zobumba, ingilazi, usimende, irabha, kanye nokukhiqizwa kwemithi, kanye neziqukathi ezimelana nokugqwala ezidingekayo embonini ye-petrochemical.

Ukwakheka okukhethekile okukhona okukhona kwe-graphite silicon carbide crucible crucible kanye nezinqubo zokukhiqiza kukhiqiza imikhiqizo enesilinganiso sokuphila kwezinsuku ezingama-55, okuyimfushane kakhulu. Izindleko zokusetshenziswa nokukhiqiza ziyaqhubeka nokukhula, kanti nenani lemfucuza ekhiqizwayo nalo liphezulu. Ngakho-ke, ukucwaninga uhlobo olusha lwe-graphite silicon carbide crucible ekhethekile kanye nenqubo yokukhiqiza kuyinkinga ephuthumayo ukuxazulula, njengoba lezi zinsimbi zinezinhlelo zokusebenza ezibalulekile emikhakheni ehlukahlukene yamakhemikhali yezimboni.

[0004] Ukuze kuxazululwe izinkinga ezingenhla, indlela yokulungiselela iziphambano ze-graphite silicon carbide crucibles zokuncibilikisa insimbi zinikezwa. Imikhiqizo elungiswe ngokwale ndlela imelana nezinga lokushisa eliphezulu kanye nokugqwala, inempilo ende yesevisi, futhi izuza ukonga amandla, ukunciphisa ukungcola, ukuvikelwa kwemvelo, kanye nezinga eliphezulu lokugaywa kabusha kwemfucuza ngesikhathi sokukhiqiza, okwandisa ukujikeleza nokusetshenziswa kwezinsiza.

Indlela yokulungiselela i-high-strength graphite silicon carbide crucibles yokuncibilikisa insimbi ihlanganisa lezi zinyathelo ezilandelayo:

1. Ukulungiswa kwezinto ezingahluziwe: I-silicon carbide, i-graphite, ubumba, ne-silicon yensimbi kufakwa kuma-hoppers wesithako ahlukene nge-crane, futhi uhlelo lwe-PLC lulawula ngokuzenzakalelayo ukukhishwa kanye nesisindo sento ngayinye ngokwesilinganiso esidingekayo. Ama-valve womoya alawula ukukhishwa, futhi okungenani izinzwa zesisindo ezimbili zisethwe phansi kwe-hopper yesithako ngasinye. Ngemva kokukala, izinto ezisetshenziswayo zifakwa emshinini wokuxuba ngenqola ehambayo ezenzakalelayo. Ukwengezwa kokuqala kwe-silicon carbide yi-50% yenani layo eliphelele.
2. Ukuxutshwa kwesibili: Ngemuva kokuthi izinto zokusetshenziswa zixutshwe emshinini wokuhlanganisa, zikhishelwa ku-buffer hopper, futhi izinto eziku-buffer hopper ziphakanyiselwa ku-hopper yokuxuba ngekheshi lebhakede ukuze kuxutshwe okwesibili. Umshini wokukhipha insimbi usethwe endaweni yokukhipha amanzi yekheshi lebhakede, futhi into yokwengeza amanzi isethwe ngaphezu kwehopper yokuxuba ukwengeza amanzi ngenkathi inyakaziswa. Izinga lokwengezwa kwamanzi ngu-10L/min.
3. I-Material drying: Izinto ezimanzi ngemva kokuxuba zomiswa emshinini wokomisa ezingeni lokushisa elingu-120-150°C ukuze kukhishwe umswakama. Ngemuva kokoma okuphelele, i-material ikhishwa ukuze iphole ngokwemvelo.
4. Ukuchotshozwa nokuhlolwa: Izinto eziqoqiwe ezomisiwe zingena emshinini wokuchoboza nokuhlola ukuze zichotshozwe ngaphambili, bese zingena kumshini wokuchoboza wokuhlasela ukuze kuqhutshekwe nokuchotshozwa, futhi ngasikhathi sinye kudlule impahla yokuhlola enezikhala ezingama-60. Izinhlayiya ezinkulu kuno-0.25mm zibuyiselwa ukuze zigaywe kabusha ukuze ziqhubeke nokuchotshozwa, ukuchotshozwa, nokuhlolwa, kuyilapho izinhlayiya ezincane kuno-0.25mm zithunyelwa ku-hopper.
5. Ukulungiswa kwempahla yesibili: Izinto eziku-discharge hopper zihanjiswa zibuyiselwe emshinini wokuhlanganisa ukuze kulungiselelwe okwesibili. I-50% esele ye-silicon carbide yengezwa ngesikhathi sokulungiswa kwesibili. Izinto ezisetshenziswayo ngemva kokulungiswa kwesibili zithunyelwa emshinini wokuxuba ukuze ziphinde zixutshwe.
6. Ukuxuba kwesibili: Phakathi nenqubo yesibili yokuxuba, isisombululo esikhethekile esine-viscosity sengezwa ku-hopper yokuxuba ngokusebenzisa isisombululo esikhethekile sokwengeza idivayisi nge-gravity ethile. Isixazululo esikhethekile sikalwa ibhakede lesisindo futhi sengezwe ku-hopper yokuxuba.
7. Ukucindezela nokubumba: Izinto ezisetshenziswayo ngemuva kokuxubana kwesibili zithunyelwa kumshini wokucindezela we-isostatic. Ngemuva kokulayisha, ukuminyanisa, ukuhlanza, nokuhlanza esibunjeni, izinto zokwakha zicindezelwa emshinini wokucindezela we-isostatic.
8. Ukusika nokunquma: Lokhu kuhlanganisa ukusika ubude nokusika ama-crucible burrs. Ukusika kwenziwa ngomshini wokusika ukusika i-crucible ekuphakameni okudingekayo, futhi ama-burrs ngemva kokusika anqunywe.
9. Ukomisa: I-crucible, ngemva kokusikwa nokusikwa esinyathelweni (8), ithunyelwa kuhhavini yokomisa ukuze yomiswe, ngezinga lokushisa elingu-120-150 ° C. Ngemuva kokumisa, igcinwa ifudumele amahora angu-1-2. Ihhavini yokomisa ifakwe uhlelo lokulungisa imigudu yomoya, equkethe amapuleti e-aluminium amaningana aguquguqukayo. Lawa mapuleti e-aluminiyamu alungisekayo ahlelwa ezinhlangothini ezimbili zangaphakathi zehhavini yokomisa, anepayipi lomoya phakathi kwawo wonke amapuleti amabili e-aluminium. Igebe phakathi kwawo wonke amapuleti e-aluminium amabili liyalungiswa ukuze lilawule ipayipi lomoya.
10. Ukucwebezela: Ubucwebe benziwe ngokuxuba izinto ezicwebezelayo namanzi, okuhlanganisa i-bentonite, ubumba oluphikisayo, impushana yengilazi, i-feldspar powder, ne-sodium carboxymethyl cellulose. I-glaze isetshenziswa ngesandla ngebhulashi ngesikhathi sokucwebezela.
11. Ukudubula okuyinhloko: I-crucible ene-glaze esetshenzisiwe ixoshwa kanye eziko amahora angu-28-30. Ukuze kuthuthukiswe ukusebenza kahle kokudubula, umbhede we-labyrinth kiln onomphumela wokuvala nokuvinjelwa komoya ubekwe phansi kuhhavini. Umbhede wokushisa unongqimba olungezansi lukakotini ovala uphawu, futhi ngaphezu kukakotini ovala uphawu, kukhona ungqimba lwesitini sokushisa, okwakhiwa umbhede we-labyrinth.
12. I-impregnation: I-crucible exoshiwe ifakwa ethangini lokukhulelwa ukuze kufakwe i-vacuum kanye nokufaka ingcindezi. Isixazululo sokufakelwa sithuthelwa ethangini lokufakelwa ngepayipi elivaliwe, futhi isikhathi sokufakwa siyimizuzu engama-45-60.
13. Ukudubula kwesibili: I-crucible ekhulelwe ifakwa kuhhavini ukuze iqhunyiswe okwesibili amahora angu-2.
14. I-Coating: I-crucible ngemva kokudubula kwesibili imbozwe ngopende we-acrylic resin osekelwe emanzini ngaphezulu.
15. Umkhiqizo oqediwe: Ngemva kokuqedwa koqweqwe, ubuso buyomiswa, futhi ngemva kokumiswa, i-crucible ihlanganiswe futhi igcinwe.