Iimpawu zezinto zokufudumeza eziqhelekileyo ezisetyenziswa kwiziko lombane lobushushu obuphezulu kakhulu:

I-Molybdenum: Ngokuqhelekileyo isetyenziswe kwi-vacuum sintering furnace kwi-1600 ° C, i-volatilization ikhawuleza kwi-1800 ° C phantsi kwe-vacuum, kwaye i-volatilization iyancipha kwi-atmosphere yokukhusela i-hydrogen ngenxa yoxinzelelo, kwaye ingasetyenziselwa ukuya kwi-2000 ° C. ;

I-Tungsten: Ngokuqhelekileyo isetyenziswe kwi-vacuum sintering furnace kwi-2300 ° C, i-volatilization ikhawuleza xa i-vacuum i-2400 ° C, i-volatilization iyancipha kwindawo yokukhusela i-hydrogen ngenxa yoxinzelelo, kwaye ingasetyenziselwa kwi-2500 ° C);

I-Tantalum: Idla ngokusetyenziswa kwiziko lokufunxa kwi-vacuum sintering kuma-2200°C. Ngokungafaniyo ne-tungsten kunye ne-molybdenum, i-tantalum ayikwazi ukusebenza kwi-atmosfera ene-hydrogen kunye ne-nitrogen. Inzuzo yayo kukuba ukusebenza kwayo kwe-machining kunye nokusebenza kwe-welding kungcono kunezo ze-tungsten kunye ne-molybdenum;

I-graphite: Ngokuqhelekileyo isetyenziswe kwi-vacuum sintering furnace kwi-2200 ° C, i-volatilization ikhawuleza kwi-2300 ° C kwi-vacuum, kwaye i-volatilization iyancipha ngenxa yoxinzelelo kwi-atmosphere yokukhusela (igesi engasebenziyo), enokusetyenziswa kwi-2400 °. C;

1. I-Tantalum isetyenziswa ngokubanzi kwiziko le-vacuum ngenxa yokusebenza kwayo kakuhle kwe-machining kunye nokusebenza kwe-welding. Nangona kunjalo, ngenxa yeqondo lokushisa elilinganisiweyo le-2200 ° C kunye nokungakwazi kwayo ukusebenzisa igesi yokukhusela, ithintela umda wokusetyenziswa kwayo. Iimethali eziRefractory ezifana ne-tantalum kunye ne-niobium ziyakufunxa isixa esikhulu seeathom ze-hydrogen kwi-atmosfera ye-hydrogen, kwaye ziya kubangela ukuqhekeka kwe-hydrogen xa ipholile. Izinyithi ezifana ne-niobium kunye ne-tantalum zivame ukukhuselwa kwindawo ye-hydrogen kumaqondo okushisa aphezulu, ngoko azikwazi ukukhuselwa yi-hydrogen.

Loluphi uhlobo lokhuseleko lwerhasi olunokusetyenziswa yi-tantalum ukunciphisa ukuguquguquka? Ukongeza kokusetyenziswa kwe-argon yokukhusela kunye ne-argon-hydrogen yokukhusela igesi edibeneyo, nje ukuba igesi engaphenduliyo nge-tantalum ngexesha lonyango lokushisa lokushisa rhoqo, inokusetyenziswa njengokukhusela umoya. Ukuzinza kwe-argon kungcono kune-nitrogen. Nangona kunjalo, i-inertness ye-nitrogen ihambelana, oko kukuthi, ayifanelekanga ukuphendula okuthile. I-Magnesium inokutshisa kwi-nitrogen. Ngoko ke, mhlawumbi impendulo ayikwazi ukusebenzisa i-nitrogen njengegesi ekhuselayo, kodwa inokukhetha kuphela i-argon. Indlela yokwenza ibhloko ye-tungsten ehlanganiswe ngezinto ze-tantalum: Inokufezekiswa nge-plasma yokutshiza i-tantalum umaleko ebusweni bezinto ze-tungsten phantsi kokhuseleko lwe-argon atmosphere.

2. I-Tungsten Ngenxa yokuba i-tungsten inomsebenzi omhle wokushisa okuphezulu, kunye nokuphucula kunye nokuphuculwa koyilo kunye neteknoloji yokuvelisa, i-tungsten isetyenziswa ngokubanzi kwi-vacuum ephezulu yokushisa. Akukho ngxaki ngokusetyenziswa kwe-tungsten kwisithando somlilo esingaphantsi kwe-2300 ℃. Kwi-2300 ℃, i-volatilization iya kukhawuleziswa, eya kuchaphazela ubomi benkonzo yobushushu bomzimba. Ke ngoko, kucetyiswa ngokubanzi ukuba kusetyenziswe umoya okhuselayo we-hydrogen kwi-2200 ~ 2500 ℃;

3. Isixhobo sokufudumeza igraphite sisetyenziselwa ukufudumeza igraphite kwi-vacuum furnace. I-high-purity, high-high-high, isotropically made isotropic ye-graphite emithathu ephezulu, ngaphandle koko ukuthembeka okuphezulu kokushisa, ukusebenza kombane kunye nobomi benkonzo akuyi kufumaneka.

4. Kwiqondo eliphakathi kunye neliphantsi lokumelana ne-vacuum furnace, ngenxa yobushushu obuphantsi, i-tungsten ayisetyenziswa ngokubanzi, ngokuqhelekileyo i-graphite, i-tantalum, kunye ne-molybdenum isetyenziswa kuphela; kwiziko elingaphantsi kwe-1000 ℃, izixhobo ze-nickel-cadmium kunye ne-iron-chromium-aluminiyam izixhobo nazo ziyasetyenziswa. Yima.