I-crucible ye-tungsten molybdenum W e-crucible Mo crucible
Ukunikezelwa kweMveliso
Njengentsimbi ye-nonferrous, i-tungsten inamandla aphezulu kunye nokuqina.Ngenxa yolu phawu lwe-2.Main, i-tungsten carbide enobunzima obuphezulu kunye nokuchasana okuqinileyo kusetyenziswe kwizixhobo zokusika kunye nezixhobo zemigodi kwizinga elikhulu.
I-Tungsten yintsimbi ephikisayo eneyona ndawo iphakamileyo yokunyibilika.Iintsimbi ngokubanzi ezinendawo yokunyibilika ephezulu kuno-1650℃ kunye nendawo ethile yogcino kunye nendawo yokunyibilika ephezulu kunendawo yokunyibilika ye-zirconium (1852℃) ibizwa ngokuba ziintsimbi eziphinda-phindayo.Iintsimbi eziqhelekileyo ezixhathisayo yi tungsten, tantalum, molybdenum, niobium, hafnium, chromium, vanadium, zirconium, kunye netitanium.Njengentsimbi ephikisayo, eyona nzuzo ibalulekileyo ye-tungsten kukuba inamandla afanelekileyo obushushu obuphezulu kunye nokuxhathisa okulungileyo kokutya kwisinyithi esinyibilikisiweyo sealkali kunye nomphunga.Ivela kuphela ngaphezulu kwe-1000 ℃.I-Molybdenum kunye ne-tungsten zineempawu ezifanayo kakhulu, indawo yokubilisa ecacileyo kunye nokuhamba kombane, i-coefficient encinci yokwandisa i-thermal, kwaye kulula ukuyiqhuba kune-tungsten.
I-thermal conductivity yensimbi ye-molybdenum [135 watts / (m · evulekile)] isebenza kakuhle ngokushisa okuthe ngqo [0.276 kJ / (kg · evulekileyo)], okwenza kube yinto ekhethekileyo yokuzikhethela ngokuchasene nokutshatyalaliswa kwe-thermal kunye nokukhathala kwe-thermal.Indawo yayo yokunyibilika yi-2620℃, eyesibini ukuya kwi-tungsten kunye ne-tantalum, kodwa ubuninzi bayo buphantsi kakhulu, ngoko ke amandla ayo athile (amandla / ubuninzi) bukhulu kune-tungsten, i-tantalum kunye nezinye iintsimbi, ezisebenza ngakumbi kwizicelo ezineemfuno ezinzima zobunzima.IMolybdenum isenokuqina okuphezulu kwi-1,200 ℃.
Iimpawu eziphambili
I-Tungsten ineqondo eliphezulu lokunyibilika, uxinzelelo lomphunga oluphantsi kakhulu, kunye nesantya esincinci sokunyuka komphunga.Iimpawu zeekhemikhali ze-tungsten zizinzile kakhulu, zingasebenzi ngomoya kunye namanzi kwindawo yokushisa, i-insoluble kwi-hydrochloric acid, i-sulfuric acid, i-nitric acid kunye nesisombululo se-alkali.Ukunyibilika emanzini asebukhosini kunye nomxube we-nitric acid kunye ne-hydrofluoric acid.Kwiqondo lokushisa eliphezulu, linokudibanisa ne-chlorine, i-bromine, iodine, i-carbon, i-nitrogen, i-sulfure, kodwa kungekhona nge-hydrogenation.Indawo yokunyibilika ye-tungsten esulungekileyo ifikelela kwi-3410℃, esenamandla aphezulu malunga ne-1300℃, ngelixa i-alloy esekwe kwi-tungsten inamandla aphezulu malunga ne-1800℃ kwaye inokumelana kakuhle nefuthe lobushushu.
Isicelo seMveliso
Ngenxa yoxinaniso oluphezulu lwe-tungsten, ubulukhuni obuphezulu, ke, iye yaba yinto efanelekileyo yokwenza ialloys yomxhuzulane ethile ephezulu, Ezi ngxubevange eziphezulu zomxhuzulane zihlulwe zibe yi-W-Ni-Fe, W-Ni-Cu, W-Co, W-WC-Cu, W-Ag kunye nezinye series ezinkulu, Olu hlobo ingxubevange ine2.Iimpawu eziphambiliUmlinganiselo ophezulu, amandla aphezulu, amandla okufunxa amandla emitha, ukuguquguquka okukhulu kwe-thermal, i-coefficient yokwandisa i-thermal encinci, i-conductivity elungileyo yombane, i-weldability kunye ne-processability elungileyo, isetyenziswa ngokubanzi kwi-aerospace, i-aviation, imikhosi, ukomba ioli, izixhobo zoMbane, amayeza kunye nezinye. Imizi-mveliso, efana nokuvelisa izixhobo, isinki yobushushu, isando sokulawula irudder kunye nezixhobo zoqhagamshelwano ezifana nokutshintsha imela, isaphuli sesekethe, i-electrode ye-welding, njl.
Indawo yombane
I-Tungsten ineplastiki eyomeleleyo, isantya esincinci sokunyuka komphunga, indawo ephezulu yokunyibilika kunye nokukwazi ukukhupha i-electron eyomeleleyo, ngoko ke i-tungsten kunye ne-alloys zayo zisetyenziswa ngokubanzi kushishino lombane kunye nombane.Umzekelo, i-tungsten wire inezinga eliphezulu elikhanyayo kunye nobomi benkonzo ende, ngoko isetyenziswa ngokubanzi ekwenzeni i-bulb filament eyahlukeneyo, njengesibane se-incandescent, isibane se-iodine ye-tungsten, i-tungsten wire nayo ingasetyenziselwa ukuvelisa i-cathode eshushu ethe ngqo kunye. Isango letyhubhu ye-electronic oscillator kunye neentlobo ngeentlobo zezixhobo ze-elektroniki kwicala le-thermal cathode heater.I2.Iimpawu eziphambiliI-s of tungsten yenza ukuba ilungele ukuwelda kwe-TIG kunye nezinye izinto ze-electrode zomsebenzi ofanayo.
Ishishini lemichiza
Iikhompawundi zeTungsten zisetyenziswa ngokuqhelekileyo njengezinto zokukhuthaza kunye nemibala ye-inorganic, efana ne-tungsten disulfide isetyenziswa njenge-lubricant kunye ne-catalyst kwi-petroli yokwenziwa, i-bronze tungsten oxide isetyenziswa kwimizobo, i-calcium okanye i-magnesium tungsten isetyenziswa rhoqo kwi-phosphors.
Ezinye iindawo
Ngenxa yokuba i-tungsten ifana neglasi ye-boryl silicate, isetyenziselwa ukwenza iglasi okanye izitywina zetsimbi.I-Tungsten inovakalelo oluphantsi kwaye isetyenziselwa ukwenza ubucwebe begolide ye-tungsten ephezulu.Ukongeza, i-tungsten ikwasetyenziswa kumayeza e-radioactive, kwaye ezinye izixhobo ziya kusebenzisa ucingo lwe-tungsten.
