I-Graphite crucible refractory iqondo lobushushu

Igraphite inoluhlu olubanzi kakhulu lwezicelo kwaye yenye yeeminerali ezixhathisayo kumaqondo obushushu aphezulu. Njengee-crucibles zegraphite, zenziwe ngezinto eziluhlaza zegraphite zendalo kwaye zigcina iimpawu eziphambili zegraphite. Yintoni iqondo lobushushu elichasayo kwicrucible yegraphite?

Iingenelo ze-graphite crucible:

1. Isantya sokuqhuba ubushushu obukhawulezayo, ukuxinana okuphezulu, ukunciphisa ixesha lokuchithwa, ukonga amandla, ukusebenza kakuhle kwemveliso, kunye nokugcina abasebenzi.

2. Ubume obufanayo, ukuchasana noxinzelelo oluthile kunye nokuzinza okuhle kweekhemikhali.

3. Ukukhuselwa kwendalo, ukonga amandla, ukumelana nokugqwala, ukumelana ne-asidi kunye ne-alkali, njl.

Umfanekiso: Icrucible yeGraphite

Njengobhedu lwethu oluqhelekileyo lwesinyithi, i-aluminium, igolide, isilivere, i-lead, i-zinc kunye ne-alloys, zonke zinokunyibilika kwi-socket yegraphite. Kuyabonakala ukuba iqondo lobushushu elinokumelana ne-graphite crucible liphezulu kunendawo yokunyibilika kwezi zinyithi.

Indawo yokunyibilika yegraphite yi-3850°C±50°, kwaye indawo yokubila yi-4250°C. Igraphite yinto ecocekileyo kakhulu, ikristale yohlobo lotshintsho. Amandla ayo ayanda ngokunyuka kweqondo lokushisa. Kwi-2000 ° C, amandla egraphite aphindwe kabini. Nokuba idlula kwi-arc ephezulu yobushushu obuphezulu, ukwehla kobunzima kuncinci kakhulu, kwaye i-coefficient yokwandisa i-thermal nayo incinci kakhulu.

Kuphakame kangakanani ukuxhathisa kobushushu obuphezulu be-graphite crucible? Kwakhona kunokwenzeka ukufikelela kwii-degrees ze-3000, kodwa umhleli uncoma ukuba ubushushu bokusebenzisa kwakho akufanele budlule i-1400 degrees, kuba kulula ukuba i-oxidized kwaye ingapheli.