Umlando omfushane we-tungsten

I-Tungsten inomlando omude futhi onezitezi osukela eNkathini Ephakathi, lapho abavukuzi bamathayela eJalimane bebika ngokuthola i-mineral ecasulayo evame ukuhambisana ne-tin ore futhi yehlise isivuno sikathayela ngesikhathi sokuncibilikiswa. Abavukuzi baqambe i-mineral wolfram ngenxa yokuthambekela kwayo “kokushwabadela” ithini “njengempisi.”
I-Tungsten yaqala ukuhlonzwa njenge-elementi ngo-1781, ngusokhemisi waseSweden u-Carl Wilhelm Scheele, owathola ukuthi i-asidi entsha, ayibiza ngokuthi i-tungstic acid, ingenziwa ngeminerali manje eyaziwa ngokuthi i-scheelite. UScheele noTorbern Bergman, uprofesa wase-Uppsala, eSweden, bahlakulela umqondo wokusebenzisa ukuncishiswa kwamalahle kuleyo asidi ukuze bathole insimbi.

I-Tungsten njengoba siyazi namuhla ekugcineni yahlukaniswa njengensimbi ngo-1783 osokhemisi ababili baseSpain, abafowethu uJuan Jose noFausto Elhuyar, emasampulini amaminerali abizwa ngokuthi i-wolframite, eyayifana ne-tungstic acid futhi esinika uphawu lwamakhemikhali lwe-tungsten (W) . Emashumini eminyaka okuqala ngemva kokutholakala ososayensi bahlola izicelo ezihlukahlukene ezingenzeka ze-elementi kanye nezinhlanganisela zayo, kodwa izindleko eziphakeme ze-tungsten zenza ukuthi ingasasebenzi ekusetshenzisweni kwezimboni.
Ngo-1847, unjiniyela ogama lakhe linguRobert Oxland wanikwa ilungelo lobunikazi lokulungisa, ukwenza, nokunciphisa i-tungsten ibe yifomethi yayo yensimbi, okwenza izicelo zezimboni zingabizi kakhulu futhi ngenxa yalokho, zibe nokwenzeka. Izinsimbi eziqukethe i-tungsten zaqala ukugunyazwa ngo-1858, okwaholela ezinsimbini zokuqala eziziqinisayo ngo-1868. Izinhlobo ezintsha zezinsimbi ezine-tungsten ezingafika ku-20% zavezwa eMbukisweni Womhlaba ka-1900 eParis, eFrance, futhi zasiza ekwandiseni insimbi. izimboni zomsebenzi nezokwakha; lawa ma-alloys ensimbi asasetshenziswa kabanzi ezitolo zemishini nasekwakhiweni namuhla.

Ngo-1904, ama-tungsten filament light bulbs okuqala anelungelo lobunikazi, athatha indawo yezibani ze-carbon filament ezazingasebenzi kahle futhi zasha ngokushesha. Izintambo ezisetshenziswa kuma-incandescent light bulbs zenziwe kusukela ku-tungsten kusukela ngaleso sikhathi, okwenza kubaluleke kakhulu ekukhuleni nasekufinyeleleni yonke indawo yokukhanyisa kokwenziwa kwesimanje.
Embonini yamathuluzi, isidingo sokudweba siyafa ngobulukhuni obufana nedayimane kanye nokuqina okukhulu kwaqhubeza ukuthuthukiswa kwama-tungsten carbides anosimende ngawo-1920s. Ngokukhula komnotho nezimboni ngemuva kweMpi Yezwe II, imakethe yama-carbides anosimende asetshenziselwa izinto zamathuluzi nezingxenye ze-canst「i-uction nayo yakhula. Namuhla, i-tungsten isetshenziswa kakhulu kunazo zonke ezinsimbi eziphikisayo, futhi isakhishwa ngokuyinhloko ku-wolframite nakwenye i-mineral, i-scheelite, kusetshenziswa indlela efanayo eyisisekelo eyasungulwa abazalwane bakwa-Elhuyar.

I-Tungsten ivamise ukuxutshwa nensimbi ukuze yenze izinsimbi eziqinile ezizinzile emazingeni okushisa aphakeme futhi isetshenziselwa ukwenza imikhiqizo efana namathuluzi e-cuttng anesivinini esikhulu namabhobho enjini ye-rocket, kanye nokusetshenziswa kwevolumu enkulu ye-ferro-tungsten njengephambili yemikhumbi, ikakhulukazi ama-ice breakers. Imikhiqizo yokugaya i-metallic tungsten kanye ne-tungsten alloy idingeka ekusetshenzisweni lapho kudingeka khona into enokuminyana okuphezulu (19.3 g/cm3), njengama-kinetic energy penetrators, counterweights, flywheels, kanye nama-governors .
I-Tungsten iphinde yakha ama-compounds - isibonelo, nge-calcium ne-magnesium, ekhiqiza izakhiwo ze-phosphorescent eziwusizo kumalambu okukhanya e-fluorescent. I-Tungsten carbide iyinhlanganisela enzima kakhulu eyenza cishe u-65% wokusetshenziswa kwe-tungsten futhi isetshenziswa ezinhlelweni ezifana namathiphu okubhoboza, amathuluzi okusika ngesivinini esikhulu, kanye nemishini yezimayini i-Tungsten carbide idume ngokumelana nokugqokwa kwayo; empeleni, ingasikwa kuphela kusetshenziswa amathuluzi edayimane. I-Tungsten carbide iphinde ibonise ukuqhutshwa kukagesi nokushisa, nokuzinza okuphezulu. Kodwa-ke, i-brittleness iyinkinga ekusetshenzisweni kwesakhiwo esigcizelelwe kakhulu futhi eholele ekuthuthukisweni kwezinhlanganisela eziboshwe ngensimbi, njengokwengezwa kwe-cobalt ukuze kwakhe i-carbide enosimende.
Ngokwezentengiselwano, i-tungsten nemikhiqizo yayo emise okwenzeke - njengama-alloys asindayo, i-copper tungsten, nama-electrode - yenziwa ngokucindezelwa nokucwiliswa eduze kwesimo senetha. Emikhiqizweni eyenziwe ngocingo nezinduku, i-tungsten iyacindezelwa futhi ifakwe i-sintered, kulandelwa ukunyakaziswa kanye nokudweba okuphindaphindiwe kanye nokunamathisela, ukuze kukhiqizwe isici sesakhiwo sokusanhlamvu esinwetshiwe esidlulela emikhiqizweni eqediwe kusukela ezindongeni ezinkulu kuye ezintanjeni ezincane kakhulu.


Isikhathi sokuthumela: Jul-05-2019