Na-ebuli teknụzụ graphite Crucible Furnace maka ịrụ ọrụ ogologo oge yana arụmọrụ ọnụ ahịa.

Mmepụta graphite crucible etolitela nke ukwuu site na ọbịbịa nke teknụzụ ntinye aka isostatic, na-aka ya dị ka usoro kachasị elu n'ụwa niile. N'ịtụnyere usoro raming ọdịnala, ịpịnye isostatic na-ebute crucibles nwere udidi edo edo, njupụta dị elu, arụmọrụ ike, yana nguzogide dị elu na oxidation. Ngwa nke elu nrụgide n'oge ịkpụzi budata enhances crucible si udidi, mbenata porosity na emesia boosting thermal conductivity na corrosion eguzogide, dị ka e gosiri na Figure 1. Na ihe isostatic gburugburu ebe obibi, akụkụ ọ bụla nke crucible ahụmahụ edo ịkpụzi nrụgide, n'ịhụ na ihe agbanwe agbanwe ofụri. Usoro a, dị ka egosiri na eserese 2, na-eme ka usoro ramming ọdịnala pụta ìhè, na-eduga n'ọganihu dị ukwuu n'ịrụ ọrụ dị egwu.

1. Okwu nsogbu

Nchegbu na-ebilite n'ọnọdụ nke ọkụ ọkụ na-eguzogide alloy alloy na-eguzogide waya na-eji graphite crucibles rammed, yana ndụ dị ihe dị ka ụbọchị 45. Mgbe naanị ụbọchị 20 gachara, a na-ahụ mbelata a na-ahụ anya na conductivity thermal, yana micro-cracks na elu elu crucible. N'ime usoro ojiji nke emechara, mbelata dị ukwuu nke thermal conductivity na-apụta ìhè, na-eme ka crucible ọ fọrọ nke nta ka ọ ghara iduhie ya. Na mgbakwunye, ọtụtụ mgbawa elu na-etolite, na ngbanwe na-apụta n'elu crucible n'ihi oxidation.

Mgbe a na-enyocha ọkụ ọkụ ahụ, dị ka egosiri na foto 3, a na-eji ntọala nke brik na-emegharị ihe mejupụtara, nke nwere ihe ọkụkụ kacha ala nke waya nguzogide dị 100 mm n'elu ala. A na-eji akwa mkpuchi asbestos emechie elu crucible, nke edobere gburugburu 50 mm site na nsọtụ mpụta, na-ekpughe nhụsianya dị ukwuu na nsọtụ ime nke elu crucible.

2. Nkwalite teknụzụ ọhụrụ

Mmelite 1: Nkwenye nke Isostatic Pressed Clay Graphite Crucible (ya na Oxidation Resistant Glaze dị ala)

Ojiji nke crucible a na-eme ka ngwa ya dịkwuo mma na ọkụ mkpuchi mkpuchi aluminum, karịsịa n'ihe gbasara nkwụsị oxidation. Graphite crucibles na-emekarị oxidize na okpomọkụ karịa 400 ℃, ebe mkpuchi mkpuchi nke aluminom alloy oven dị n'etiti 650 na 700 ℃. Crucibles nwere obere okpomọkụ oxidation na-eguzogide glaze nwere ike belata usoro oxidation nke ọma na okpomọkụ dị elu karịa 600 ℃, na-agba mbọ hụ na ịdị mma nke okpomọkụ dị ogologo. N'otu oge ahụ, ọ na-egbochi mbelata ike n'ihi oxidation, na-agbatị ndụ crucible.

Nkwalite 2: Ebe Ọkụ na-eji eserese nke otu ihe dị ka Crucible.

Dị ka egosiri na eserese 4, iji ntọala graphite nke otu ihe dị ka crucible na-eme ka ikpo ọkụ n'otu n'otu dị n'okpuru ala crucible n'oge usoro ikpo ọkụ. Nke a na-ebelata gradients okpomọkụ nke kpo oku na-ezighi ezi na-ebelata ma na-ebelata ọchịchọ nke mgbawa na-esite na kpo oku na-enweghị isi. Ntọala graphite raara onwe ya nye na-ekwekwa nkwa nkwado kwụsiri ike maka crucible, na-adakọ na ala ya ma na-ebelata mgbaji na-akpata nchekasị.

Mmelite 3: Nkwalite ihe owuwu nke mpaghara nke ọkụ (ọgụgụ 4)

1. Mma n'ime ọnụ mkpuchi ọkụ, nke ọma na-egbochi iyi n'elu crucible si n'ụzọ dị irè na-eme ka ọkụ akara akara.
2. Ịhụ na waya na-eguzogide dị larịị na ala crucible, na-ekwe nkwa kpo oku ala zuru oke.
3. Na-ebelata mmetụta nke eriri blanket n'elu na-ekpuchi ọkụ na-ekpo ọkụ, na-eme ka ikpo ọkụ zuru oke n'elu crucible na ibelata mmetụta nke oxidation dị ala.

Mmelite 4: Nnụcha usoro eji eme ihe na-emebi emebi

Tupu ojiji, kpochaa crucible n'ime ọkụ na okpomọkụ n'okpuru 200 ℃ maka awa 1-2 iji kpochapụ mmiri. Mgbe preheating, ngwa ngwa bulie okpomọkụ ka 850-900 ℃, ibelata ibi oge n'etiti 300-600 ℃ oxidation n'ime a okpomọkụ nso. Mgbe nke ahụ gasịrị, belata okpomọkụ na okpomọkụ na-arụ ọrụ ma webata ihe mmiri mmiri aluminum maka ịrụ ọrụ nkịtị.

N'ihi mmetụta mmebi nke ihe nnụcha ihe na crucibles, soro usoro ojiji kwesịrị ekwesị. Mwepụ slag mgbe niile dị mkpa ma kwesịrị ịrụ ya mgbe crucible na-ekpo ọkụ, n'ihi na ihicha slag na-aghọ ihe ịma aka ma ọ bụghị ya. Nleba anya nke ọma nke ikuku ọkụ nke crucible na ọnụnọ nke ịka nká na mgbidi crucible dị oké mkpa na njedebe nke ojiji. Ekwesịrị ime mgbanwe n'oge iji zere mfu ike na-enweghị isi na ntapu mmiri aluminom.

3. Nsonaazụ Mmelite

Ogologo ndụ ogologo nke crucible dị mma bụ ihe kwesịrị ịrịba ama, na-edobe conductivity thermal maka ogologo oge, na-enweghị mgbawa elu. Nzaghachi nke onye ọrụ na-egosi arụmọrụ emelitere, ọ bụghị naanị ibelata ọnụ ahịa mmepụta kamakwa na-eme ka nrụpụta nrụpụta dị elu nke ukwuu.

4. Nkwubi okwu

1. Isostatic ụrọ graphite crucibles na-apịaji na-aka nke ọma n'ihe gbasara arụmọrụ.
2. Ọdịdị ọkụ ahụ kwesịrị ikwekọ nha na nhazi nke crucible maka ịrụ ọrụ kacha mma.
3. Ojiji crucible kwesịrị ekwesị na-agbatịkwu ogologo ndụ ya, na-achịkwa ọnụ ahịa mmepụta nke ọma.

Site na nyocha nke ọma na njikarịcha teknụzụ ọkụ ọkụ, arụmarụ ọrụ nke ọma na ogologo ndụ na-atụnye ụtụ nke ukwuu n'ịbawanye nrụpụta nrụpụta yana ichekwa ọnụ ahịa.