Nyochaa The Graphite Crucible

Nchịkọta
Ihe osise graphiteA na-eme ya site na graphite flake eke dị ka isi akụrụngwa, a na-ejikwa ụrọ refractory rọba ma ọ bụ carbon mee ya dị ka ihe nkedo. Ọ nwere njirimara nke nguzogide okpomọkụ dị elu, ike ọkụ ọkụ, ezigbo nkwụsị corrosion, na ogologo ndụ ọrụ. N'oge a na-eji okpomọkụ dị elu, ọnụọgụ nke mgbasawanye nke okpomọkụ dị ntakịrị, ma ọ nwere ụfọdụ nguzogide nrụgide maka ngwa ngwa jụrụ oyi na kpo oku. Ọ nwere nguzogide corrosion siri ike na ngwọta acidic na alkaline, nkwụsi ike kemịkalụ mara mma, ọ naghị etinye aka na mmeghachi omume kemịkal ọ bụla n'oge usoro agbaze. Mgbidi dị n'ime nke graphite crucible dị mma, na mmiri mmiri a wụrụ awụ adịghị mfe ịgbapụ ma na-arapara n'ahụ mgbidi dị n'ime nke crucible, na-eme ka mmiri mmiri dị n'ime ya nwee ikike ịgbapụ na nkedo dị mma, nke kwesịrị ekwesị maka nkedo na ịmepụta ụdị dị iche iche dị iche iche. N'ihi njirimara mara mma nke dị n'elu, a na-eji graphite crucibles eme ihe n'ọtụtụ ebe n'ịgbaze ihe igwe na-emepụta ígwè na ọla ndị na-adịghị ferrous na alloys ha.

Ụdị
A na-ejikarị eriri graphite eme ihe maka agbaze nke ihe ọla, nke kewara ụzọ abụọ: graphite eke na graphite artificial.
1) graphite eke
A na-eme ya nke ọma na flake graphite dị ka isi ihe eji eme ya, yana mgbakwunye nke ụrọ na ihe ndị ọzọ na-emegharị ahụ. A na-akpọkarị ya ụrọ graphite crucible, ebe a na-eji asphalt mee ụdị ihe nkedo carbon. A na-eme ya naanị site n'ike ụrọ na-akpụ akpụ, a na-akpọkwa ya ụdị ihe eji eke ụrọ Hui. Nke mbụ nwere ike dị elu yana nguzogide ujo ọkụ. A na-eji ya eme ihe maka agbaze nke ígwè, ọla kọpa, ọla kọpa, na ọla ndị ọzọ na-adịghị ferrous, nke nwere nha dị iche iche na ikike ịgbaze sitere na 250g ruo 500kg.
Ụdị crucible a gụnyere ngwa ndị dị ka ngaji skimming, mkpuchi, mgbanaka nkwonkwo, nkwado crucible, na mkpara mkpagharị.
2) Artificial graphite
Akpụkpọ anụ graphite eke a kpọtụrụ aha n'elu na-enwekarị ihe dị ka mineral ụrọ 50%, ebe adịghị ọcha (ọdịnaya ash) na crucibles graphite wuru na-erughị 1%, nke a na-eji eme ka ọla dị ọcha dị elu. Enwekwara graphite dị ọcha nke emerela ọgwụgwọ dị ọcha pụrụ iche (ọdịnaya ash <20ppm). A na-ejikarị eriri graphite arụ ọrụ agbaze obere ọla dị oké ọnụ ahịa, ọla ndị dị elu dị ọcha, ma ọ bụ ọla na oxides dị elu. A pụkwara iji ya mee ihe dị ka ihe mgbagwoju anya maka nyocha gas na ígwè.

Usoro mmepụta
Enwere ike kewaa usoro nrụpụta nke graphite crucibles ụzọ atọ: ịkpụzi aka, ịkpụzi ntụgharị, na ịkpụzi mkpakọ. Ogo nke crucible nwere njikọ chiri anya na usoro ịkpụzi usoro. Usoro nhazi ahụ na-ekpebi nhazi, njupụta, porosity, na ike arụ ọrụ nke anụ ahụ.
Enweghị ike iji ụzọ ịkpụzi rotary ma ọ bụ mkpakọ kpụzie crucibles ejiri aka mee maka ebumnuche pụrụ iche. Enwere ike ịmepụta ụfọdụ crucibles pụrụ iche site na ijikọta ịkpụzi rotary na ịkpụzi aka.
Rotary ịkpụzi bụ usoro nke igwe rotary nwere ike na-ebugharị ebu ahụ ka ọ rụọ ọrụ ma na-eji mma dị n'ime were wepụ ụrọ iji mechaa ịkpụzi ahụ.
Mkpụzi mkpakọ bụ iji akụrụngwa nrụgide dị ka nrụgide mmanụ, nrụgide mmiri, ma ọ bụ nrụgide ikuku dị ka ike kinetic, na-eji ihe nchara nchara dị ka ngwa rọba maka ịkpụpụta crucible. E jiri ya tụnyere usoro ịkpụzi rotary, ọ nwere uru nke usoro dị mfe, usoro mmepụta mkpụmkpụ, nnukwu mkpụrụ na arụmọrụ, obere ọrụ ike, obere ịkpụzi mmiri, obere crucible shrinkage na porosity, elu ngwaahịa àgwà na njupụta.

Nlekọta na nchekwa
Ekwesịrị ichebe crucibles graphite site na mmiri mmiri. Mkpụrụ osisi graphite na-atụkarị egwu mmiri, nke nwere ike inwe mmetụta dị ukwuu na ịdị mma. Ọ bụrụ na eji ya na crucible dị mmiri mmiri, ọ nwere ike ịkpata mgbawa, mgbawa, n'ọnụ daa, na ọdịda ala, na-ebute mfu ọla gbazere na ọbụna ihe mberede metụtara ọrụ. Ya mere, mgbe ị na-echekwa ma na-eji graphite crucibles, a ghaghị itinye nlebara anya na mgbochi mmiri.
Ụlọ nkwakọba ihe nke na-echekwa graphite crucibles kwesịrị akọrọ na ventilashion, na okpomọkụ kwesịrị ịnọgide na-enwe n'etiti 5 ℃ na 25 ℃, na iru mmiri nke 50-60%. E kwesịghị ịdebe ihe ndị e ji amụ ihe n'ala brik ma ọ bụ n'ala ciment iji zere mmiri. Ekwesịrị idobe eriri graphite buru ibu n'osisi osisi, ọkacha mma 25-30cm n'elu ala; Achịkọbara na igbe osisi, nkata wicker, ma ọ bụ akpa ahịhịa, a ga-edobe ndị na-ehi ụra n'okpuru pallets, ọ bụghị ihe na-erughị 20cm n'elu ala. Ịtụkwasị oyi akwa nke mmetụta na ndị na-ehi ụra na-eme ka ọ dịkwuo mma maka mkpuchi mmiri. N'ime oge ụfọdụ nke ikpokọta, ọ dị mkpa ịkwanye akwa oyi akwa n'elu elu, ọkacha mma na elu na nke ala na-eche ibe ha ihu. Oghere dị n'etiti ikpokọta na ikpokọta ekwesịghị ịdị ogologo. N'ozuzu, a ga-eme nchịkọta otu ugboro n'ọnwa abụọ. Ọ bụrụ na mmiri dị n'ala adịghị elu, enwere ike ịme akwa akwa otu ugboro kwa ọnwa atọ. Na nkenke, nchịkọta ugboro ugboro nwere ike nweta mmetụta dị mma na-egbochi mmiri.