Ukuminyana okuphezulu, ukuhleleka okuhle kakhulu kanye nokusebenziseka kalula, ukumelana nokugqwala okuvelele, i-modulus ephezulu yokunwebeka, ukuqhutshwa kwe-thermal okuhlaba umxhwele kanye nokwanda okuphansi kokushisa. Sethula: ama-alloys ethu ensimbi esindayo ye-tungsten.
"Ama-heavyweights" ethu asetshenziswa, isibonelo, ezimbonini zezindiza nezasemoyeni, ubuchwepheshe bezokwelapha, izimboni zezimoto nezama-Foundry noma ukumba uwoyela negesi. Sethula kafushane okuthathu kwalokhu ngezansi:
Amaalloyi ethu ensimbi esindayo e-tungsten i-W-Ni-Fe kanye ne-W-Ni-Cu anokuminyana okuphezulu ngokukhethekile (17.0 kuya ku-18.8 g/cm3) futhi ahlinzeka ngokuvikela okuthembekile ngokumelene ne-X-ray kanye nemisebe ye-gamma. Kokubili i-W-Ni-Fe kanye nezinto zethu ezingezona uzibuthe i-W-Ni-Cu zisetshenziselwa ukuvikela isibonelo ekusetshenzisweni kwezokwelapha kodwa nasembonini kawoyela negesi. Njengama-collimator emishini yokwelapha ngemisebe baqinisekisa ukuchayeka okunembile. Ekulinganiseni izisindo sisebenzisa ukuminyana okuphezulu kakhulu kwengxube yethu yensimbi esindayo ye-tungsten. I-W-Ni-Fe kanye ne-W-Ni-Cu inweba kancane kakhulu emazingeni okushisa aphezulu futhi ihlakaza ukushisa kahle kakhulu. Njengokufaka isikhunta somsebenzi wesisekelo se-aluminium, zingashiswa ngokuphindaphindiwe futhi zipholile ngaphandle kokuba zibe brittle.
Enqubweni ye-Electrical Discharge Machining (EDM), izinsimbi zenziwa ngezinga eleqile lokunemba ngokusebenzisa ukukhishwa kukagesi phakathi kwe-workpiece ne-electrode. Lapho ama-electrode ethusi ne-graphite engasebenzi, ama-electrode e-tungsten-copper- amelana nokugqokwa ayakwazi umshini ngisho nezinsimbi eziqinile ngaphandle kobunzima. Ku-plasma spray nozzles embonini yokumboza, izinto ezibonakalayo ze-tungsten nethusi ziphinde ziphelelisane kahle.
Izinsimbi ezisindayo ze-metallic tungsten ziqukethe izingxenye ezimbili ezibonakalayo. Phakathi nenqubo yokukhiqiza yezigaba ezimbili, isisekelo esinezimbotshana esinezimbotshana siqala ukukhiqizwa kusuka engxenyeni enephuzu elincibilikayo eliphakeme, isibonelo insimbi ephikisayo, ngaphambi kokuba izimbotshana ezivulekile zibe sezingeniswa nengxenye ewuketshezi enephuzu elincibilikayo eliphansi. Izakhiwo zezingxenye ngazinye zihlala zingashintshile. Lapho kuhlolwa ngaphansi kwesibonakhulu, izici zengxenye ngayinye ziyaqhubeka nokubonakala. Ezingeni le-macroscopic, noma kunjalo, izakhiwo zezingxenye zomuntu ngamunye zihlangene. Njenge-hybrid metallic material, into entsha ingase, isibonelo, ibe ne-thermal conductivity entsha kanye namanani okunweba okushisayo.
Izinsimbi ezisindayo ze-tungsten-sintered-sintered-liquid zenziwa ngengxube yezimpushana zensimbi ngenqubo yokukhiqiza yesiteji esisodwa lapho izingxenye ezinamaphoyinti ancibilikayo aphansi zincibilika kulezo ezinamaphoyinti aphakeme ancibilika. Phakathi nesigaba sokuhlanganisa, lezi zingxenye zakha ama-alloys nalawo anephuzu lokuncibilika eliphakeme. Ngisho nenani elikhulu le-tungsten, elinephuzu eliphakeme lokuncibilika, liyancibilika phakathi nesigaba sokuhlanganisa. Izinto eziyinhlanganisela zesigaba soketshezi se-Plansee's sintered sintered zizuza ekumineni kwengxenye ye-tungsten, imodulus yokunwebeka kanye nekhono lokumunca imisebe ye-X-ray ne-gamma ngaphandle kokuhlushwa yinoma yiziphi izithiyo ezihlobene nokucutshungulwa kwe-tungsten emsulwa Ngokuphambene, i-coefficient yokwanda okushisayo kanye ukuhanjiswa okushisayo nogesi kwezingxenye ze-liquid phase-sintered kuncike kakhulu ekubunjweni okuhilelekile esigabeni sokuhlanganisa.
Izinto ezikhishwa emuva ngasikhathi sinye zihlanganisa izinto ezibonakalayo zezingxenye ezimbili ezihlukene. Phakathi nale nqubo, izinto ngokwazo zigcinwa esimweni sazo sokuqala futhi ziboshwe kuphela endaweni encane. Izinsimbi zihlanganiswa esikhunjini ukuze zakhe isibopho sama-micrometer ambalwa kuphela ngosayizi. Ngokungafani namasu we-welding kanye ne-soldering, le ndlela izinzile ikakhulukazi futhi iqinisekisa ukuqhutshwa kokushisa okuphezulu.
Imikhiqizo Eshisayo yama-Tungsten Heavy Alloys
