Iimpawu zokuxhathisa ukugqwala zeGraphite Crucibles kwiShishini leMetallurgical

Intshayelelo

Kwishishini lesinyithi, ukusetyenziswa kwezinto ezisemgangathweni ophezulu kubaluleke kakhulu ukuqinisekisa ukuveliswa kweesinyithi kunye nee-alloys ngokufanelekileyo nangokuthembekileyo. Phakathi kwezinto ezahlukeneyo ezisetyenziswayo, ii-graphite crucibles zifumene udumo olukhulu ngenxa yeempawu zazo ezibalaseleyo zokuxhathisa ukugqwala. Eli nqaku liphonononga iimpawu zokuxhathisa ukugqwala zeizixhobo zokubethela zegrafayithikunye nendima yazo ebalulekileyo kwiinkqubo ze-metallurgical.

Ukumelana nokugqwalaIzinto zokubethela zeGraphite

I-Graphite, uhlobo lwekhabhoni, ibonakalisa ukumelana okumangalisayo nohlaselo lweekhemikhali kunye namaqondo obushushu aphezulu, nto leyo eyenza ukuba ibe yinto efanelekileyo kwii-crucibles kwishishini le-metallurgical. Ukumelana nokugqwala kwee-crucibles ze-graphite kubangelwa ziimpawu ezikhethekileyo ze-graphite ngokwayo. I-Graphite ayinayo i-reaction, nto leyo eyithintelayo ukuba ingasabelani nee-asidi ezininzi, ii-alkalis, kunye nezinye izinto ezigqwalisayo ezifunyanwa ngexesha lokunyibilika kwesinyithi kunye nokuveliswa kwe-alloy.

▪ Ukumelana ne-asidi:

Izixhobo zokubethela zegrafayithizibonakalisa ukumelana okugqwesileyo neendawo ezine-asidi. Ziyakwazi ukumelana nemiphumo yokubola ye-asidi efana ne-sulfuric acid, i-hydrochloric acid, kunye ne-nitric acid. Olu mgangatho lubalulekile kwiinkqubo ezibandakanya ukuphathwa kwe-asidi, njengokuveliswa kweesinyithi ezithile kunye nee-oxide zesinyithi.

▪ Ukumelana neAlkali:

Ukongeza kwii-asidi,izixhobo zokubethela zegrafayithiziyakwazi ukumelana ne-alkalis. Izinto ze-alkaline, ezifana ne-sodium hydroxide kunye ne-potassium hydroxide, zisetyenziswa kakhulu kwizicelo ezahlukeneyo ze-metallurgical.Izixhobo zokubethela zegrafayithiazichaphazeleki zezi alkalis, nto leyo eqinisekisa ukuthembeka kunye nobude bexesha le-crucible ngexesha leenkqubo ezinjalo.

▪ Ukumelana ne-Oxidation:

I-Graphite inokumelana okuhle kakhulu ne-oxidation, nokuba kushushu kakhulu. Xa iphantsi kobushushu obuphezulu, i-graphite yenza umaleko okhuselayo we-graphite oxide kumphezulu wayo, osebenza njengomqobo ekuthinteleni i-oxidation engaphezulu. Le propati iluncedo ngakumbi kwiindawo apho izinto eziqhekezayo zichaphazeleka kwi-atmospheres ezikhupha i-oxidation, njengokunyibilikisa nokucocwa kweentsimbi.

Ukumelana noTshabalalo oluBushushu: Enye into ebalulekileyoizixhobo zokubethela zegrafayithikukuxhathisa kwazo ukutshayiswa kobushushu. I-Graphite inomoya ophezulu wokushisa kunye ne-coefficient ephantsi yokwandiswa kobushushu, nto leyo eyenza ukuba ikwazi ukumelana notshintsho olukhawulezileyo lobushushu ngaphandle kokuqhekeka okanye ukuqhekeka. Oku kuxhathisa ukutshayiswa kobushushu kubalulekile kwiinkqubo ezibandakanya imijikelo yokufudumeza nokupholisa ephindaphindwayo, efana nokuphola kwesinyithi kunye nokuveliswa kwe-alloy.

Iingenelo zeGraphite Crucibles

Iimpawu zokumelana nokugqwala kwezinto ezisetyenziswa kwi-graphite crucibles zibonelela ngeenzuzo ezininzi kushishino lwe-metallurgical:

▪ Ixesha Elide Lobomi:

Izinto ezisetyenziswa kwi-graphite crucibles zihlala ixesha elide xa zithelekiswa nezinto ezisetyenziswa kwi-crucibles zemveli ezenziwe ngezinto ezifana nodongwe okanye i-ceramic ngenxa yokuba ziyakwazi ukumelana nokugqwala kunye noxinzelelo lobushushu.

▪ Umgangatho oPhucukileyo weMveliso:

Indlela izinto ezisetyenziswa kwi-graphite crucibles ezingasebenzi ngayo iqinisekisa ukuba isinyithi esinyibilikisiweyo okanye i-alloy ihlala ingangcoliswanga, nto leyo ekhokelela kwiimveliso zomgangatho ophezulu.

▪ Ukonga Amandla:

Izixhobo zokunyibilikisa i-graphite zinomoya ofanelekileyo wokuhambisa ubushushu, nto leyo evumela ukudluliselwa kobushushu ngokufanelekileyo, ukusasazwa kobushushu obufanayo, kunye nokusetyenziswa kwamandla okuncitshiswa ngexesha lenkqubo yokunyibilika.

UkuSebenza kakuhle kweendleko: Nangona ekuqaleni zibiza kakhulu kunezinye izinto ezisetyenziswa ekubetheni, ubomi obude begrafiti crucibles kunye nokusebenza kakuhle kwenza ukuba zibe lukhetho olungabizi kakhulu ekuhambeni kwexesha.

Isiphelo

Ii-graphite crucibles zidlala indima ebalulekileyo kushishino lwe-metallurgical, zibonelela ngeempawu ezibalaseleyo zokumelana nokugqwala, ukumelana noxinzelelo lobushushu, kunye nokumelana ne-oxidation. Ukukwazi kwazo ukumelana neemeko ezinzima ezidibana nazo ngexesha lokunyibilika kwesinyithi kunye nemveliso ye-alloy kuzenza zibe yimfuneko kwiinkqubo ezahlukeneyo ze-metallurgical. Ngokukhetha ii-graphite crucibles, abavelisi banokuqinisekisa umgangatho wemveliso ophuculweyo, ubomi obude be-crucibles, ukusebenza kakuhle kwamandla, kunye nokusebenza kakuhle kweendleko ngokubanzi. Njengoko ishishini le-metallurgical liqhubeka lihambela phambili, ii-graphite crucibles ziya kuhlala ziyinxalenye ethembekileyo nebalulekileyo ekufuneni imveliso yesinyithi esebenzayo nesemgangathweni ophezulu.