Embonini yezempi, i-tungsten nama-alloys ayo ayimithombo yamasu ayivelakancane, okuthi ngokwezinga elikhulu inqume amandla ezempi yezwe.
Ukuze kukhiqizwe izikhali zanamuhla, akunakuhlukaniswa nokucubungula kwensimbi.Ukuze kucutshungulwe insimbi, amabhizinisi ezempi kumele abe nemimese enhle kakhulu nezibunji.Phakathi kwezakhi zensimbi ezaziwayo, i-tungsten kuphela engenza lo msebenzi obalulekile.Iphuzu layo lokuncibilika lingaphezu kuka-3400°C.Insimbi eyi-refractory eyaziwa kakhulu, enobunzima obungu-7.5 (ukuqina kwe-Mohs), ingenye yezinsimbi ezinzima kakhulu.
Umuntu wokuqala emhlabeni ukwethula i-tungsten emkhakheni wamathuluzi okusika kwakuyiBritish Maschette.Ngo-1864, u-Marchet wengeza u-5% we-tungsten ensimbi yamathuluzi (okungukuthi, insimbi yokukhiqiza amathuluzi okusika, amathuluzi okulinganisa, nezibungu) okokuqala, futhi amathuluzi aphumela ekukhuliseni isivinini sokusika insimbi ngo-50%.Kusukela ngaleso sikhathi, ijubane lokusika lamathuluzi aqukethe i-tungsten liye landa ngokwejometri.Isibonelo, ijubane lokusika lamathuluzi enziwe nge-tungsten carbide alloy njengento eyinhloko ingafinyelela ngaphezu kuka-2000 m/min, okuphindwe izikhathi ezingu-267 kunamathuluzi aqukethe i-tungsten ekhulwini le-19..Ngaphezu kwejubane eliphezulu lokusika, ubulukhuni bamathuluzi we-tungsten carbide alloy angeke kwehle ngisho nasezingeni eliphezulu lokushisa elingu-1000 ℃.Ngakho-ke, amathuluzi e-carbide alloy afaneleka kakhulu ukusika izinto ze-alloy okunzima ukuzisebenzisa umshini namanye amathuluzi.
Izibunjwa ezidingekayo ekucutshungulweni kwensimbi zenziwe ikakhulukazi nge-tungsten carbide ceramic cemented carbide.Inzuzo ukuthi iqinile futhi ingashaywa izikhathi ezingaphezu kwezigidi ezingu-3, kuyilapho isikhunta sensimbi esivamile singashaywa izikhathi ezingaphezu kuka-50,000 kuphela.Akukhona lokho kuphela, isikhunta esenziwe nge-tungsten carbide ceramic cemented carbide akulula ukusigqoka, ngakho-ke umkhiqizo opuntshiwe unembe kakhulu.
Kuyabonakala ukuthi i-tungsten inethonya elinamandla embonini yezwe yokukhiqiza imishini.Uma ingekho i-tungsten, izoholela ekwehleni okukhulu ekusebenzeni kahle kokukhiqizwa kwemboni yokukhiqiza imishini, futhi ngesikhathi esifanayo, imboni yokukhiqiza imishini izokhubazeka.
Isikhathi sokuthumela: Dec-14-2020