I-Tungsten molybdenum crucible W crucible Mo crucible
Isethulo somkhiqizo
Njengensimbi engenamvubelo, i-tungsten inamandla aphezulu kakhulu nobulukhuni.Ngenxa yalokhu 2.Izici Eziyinhloko, i-tungsten carbide enobunzima obuphezulu nokumelana nokugqoka okuqinile kusetshenziswe kumathuluzi okusika kanye namathuluzi okumba ngezinga elikhulu.
I-Tungsten iyinsimbi ephikisayo enephuzu eliphakeme kakhulu lokuncibilika.Izinsimbi ezijwayelekile ezinephuzu lokuncibilika elingaphezu kuka-1650 ℃ kanye nendawo egciniwe ethile kanye nephuzu lokuncibilika elingaphezu kwendawo yokuncibilika ye-zirconium (1852℃) zibizwa nge-refractory metals.Izinsimbi ezivamile eziphikisayo yi-tungsten, i-tantalum, i-molybdenum, i-niobium, i-hafnium, i-chromium, i-vanadium, i-zirconium, ne-titanium.Njengensimbi ephikisayo, inzuzo ebaluleke kakhulu ye-tungsten ukuthi inamandla amahle okushisa aphezulu kanye nokumelana nokugqwala okuhle kwezinsimbi ze-alkali ezincibilikisiwe kanye nomhwamuko.Ivela kuphela ngaphezu kuka-1000 ℃.I-Molybdenum ne-tungsten zinezici ezifanayo kakhulu, indawo yokubilisa evelele kanye nokuhamba kukagesi, i-coefficient encane yomugqa wokunweba okushisayo, futhi kulula ukuyicubungula kune-tungsten.
I-thermal conductivity yensimbi ye-molybdenum [135 watts / (m · open)] isebenza kahle kakhulu ngokushisa okuthile [0.276 kJ / (kg · open)], okwenza kube ukukhetha okungokwemvelo ngokumelene nokushaqeka okushisayo nokukhathala okushisayo.Iphuzu layo elincibilikayo lingu-2620℃, elesibili ku-tungsten ne-tantalum, kodwa ukuminyana kwalo liphansi kakhulu, ngakho-ke amandla alo athile (amandla / ukuminyana) makhulu kune-tungsten, i-tantalum nezinye izinsimbi, ezisebenza kangcono ekusetshenzisweni okunezidingo ezibalulekile zesisindo.I-Molybdenum isenamandla aphezulu ku-1,200 ℃.
Izici Eziyinhloko
I-Tungsten inezinga eliphezulu lokuncibilika, umfutho womhwamuko ophansi kakhulu, nezinga elincane lokuhwamuka.Amakhemikhali e-tungsten azinzile kakhulu, awasebenzi emoyeni namanzi ekamelweni lokushisa, awancibiliki ku-hydrochloric acid, i-sulfuric acid, i-nitric acid nesisombululo se-alkali.Chaza emanzini asebukhosini kanye nengxube ye-nitric acid ne-hydrofluoric acid.Emazingeni okushisa aphezulu, ingahlangana ne-chlorine, i-bromine, i-iodine, i-carbon, i-nitrogen, isulfure, kodwa hhayi nge-hydrogenation.Indawo encibilikayo ye-tungsten emsulwa ifinyelela ku-3410 ℃, esenamandla aphezulu cishe ku-1300 ℃, kuyilapho ingxubevange esekwe ku-tungsten nayo inamandla aphezulu cishe ku-1800 ℃ futhi inokumelana okuhle nomthelela oshisayo.
Isicelo somkhiqizo
Ngenxa yokuminyana okuphezulu kwe-tungsten, ubulukhuni obuphezulu, Ngakho-ke, isibe yinto ekahle yokwenza ama-alloys athile adonsela phansi, Lawa ma-alloys aphezulu adonsela phansi ahlukaniswe abe W-Ni-Fe, W-Ni-Cu, W-Co, I-W-WC-Cu, i-W-Ag nolunye uchungechunge olukhulu, Lolu hlobo lwe-alloy lune-2.Izici Eziyinhlokos of high ratio, amandla aphezulu, eqinile ukumuncwa emisebeni ikhono, conductivity enkulu ezishisayo, thermal ukunwetshwa Coefficient encane, conductivity kagesi okuhle, weldability kanye processability omuhle, Isetshenziswa kabanzi ku-aerospace, zezindiza, ezempi, ukugaya uwoyela, izinsimbi zikagesi, imithi kanye nokunye. izimboni, Njengokukhiqiza izikhali, usinki wokushisa, isando sebhalansi yokulawula iphini kanye nezinto zokuxhumana ezifana nokushintshwa kommese, i-circuit breaker, i-electrode yokushisela indawo, njll.
Inkambu ye-elekthronikhi
I-Tungsten ine-plasticity eqinile, isivinini esincane sokuhwamuka, indawo ephezulu yokuncibilika kanye nekhono elinamandla lokuphuma kwama-electron, ngakho-ke i-tungsten nama-alloys ayo asetshenziswa kabanzi embonini yokuphakelwa kukagesi kanye namandla.Isibonelo, i-tungsten wire inezinga eliphezulu elikhanyayo nempilo ende yesevisi, ngakho-ke isetshenziswa kabanzi ekwenzeni imicu ehlukahlukene ye-bulb, njengesibani se-incandescent, isibani se-iodine tungsten, i-tungsten wire ingasetshenziswa futhi ekwenzeni i-cathode eqondile eshisayo isango le-electronic oscillator tube kanye nezinhlobonhlobo zezinsimbi ze-elekthronikhi eziseceleni kwe-thermal cathode heater.I2.Izici Eziyinhlokoama-tungsten ayenza ifanelekele ukushisela i-TIG nezinye izinto ze-electrode zomsebenzi ofanayo.
Imboni yamakhemikhali
Ama-Tungsten compounds avame ukusetshenziswa njengama-catalysts nemibala ye-inorganic, njenge-tungsten disulfide isetshenziswa njenge-lubricant kanye ne-catalyst kuphethiloli wokwenziwa, i-bronze tungsten oxide isetshenziswa emidwebeni, i-calcium noma i-magnesium tungsten ivame ukusetshenziswa ku-phosphors.
Ezinye izindawo
Ngenxa yokuthi i-tungsten ifana nengilazi ye-boryl silicate, isetshenziselwa ukwenza ingilazi noma izimpawu zensimbi.I-Tungsten inokuzwela okuphansi futhi isetshenziselwa ukwenza ubucwebe begolide be-tungsten obuhlanzekile.Ngaphezu kwalokho, i-tungsten iphinde isetshenziswe emithini ekhipha imisebe, kanti ezinye izinsimbi zizosebenzisa ucingo lwe-tungsten.
