Umehluko phakathi kwe-tungsten alloy ne-cemented carbide

Nakuba kokubili i-tungsten alloy kanyei-carbide enosimendeziwuhlobo lomkhiqizo we-alloy we-transition metal tungsten, zombili zingasetshenziswa ku-aerospace kanye nokuzulazula kwezindiza kanye neminye imikhakha, kodwa ngenxa yomehluko wezinto ezingeziwe, isilinganiso sokwakheka kanye nenqubo yokukhiqiza, ukusebenza nokusetshenziswa kwakho kokubili nakho kunokukhulu. umehluko.

I. Incazelo

I-Tungsten alloy, eyaziwa nangokuthi i-high specific gravity alloy, iyingxubevange ene-tungsten powder njengento eyinhloko eluhlaza kanye ne-nickel, insimbi, ithusi nezinye izakhi njengezinto ezisizayo.Okuqukethwe kwe-tungsten ngokuvamile kuphakathi kuka-85% no-99%.

I-carbide enosimende, eyaziwa nangokuthi insimbi ye-tungsten, okungukuthi, iyingxubevange ene-refractory metal carbide njenge-tungsten carbide njengesithako esiyinhloko ne-cobalt, i-nickel, i-molybdenum nezinye izakhi njenge-binder.Okuqukethwe kwe-binder ngokuvamile kuphakathi kuka-10% no-20%.
Okwesibili, ukusebenza

Ingxubevange ye-gravity ethize ephezulu inephuzu elincibilikayo eliphakeme, ukuminyana, amandla nobulukhuni, ipulasitiki engcono, ukumelana nokushisa, ukumelana nokugqwala,, ukumelana nomthelela, ukumelana ne-oxidation kanye nomphumela wokuvikela.

Insimbi ye-Tungsten nayo inezici ezifanayo nama-tungsten alloys, nakuba ukuqina kwayo okushisayo kanye nezinzuzo zokumelana nokugqoka kusobala kakhulu, ikakhulukazi eqinisweni lokuthi ihlala ingashintshile ku-500 ° C futhi isenobunzima obuphezulu ku-1000 ° C.Kodwa-ke, i-brittleness yayo iphezulu kakhulu, ngakho yenza ukusika.

Okwesithathu, inqubo yokukhiqiza

Izinyathelo zokulungiselela ze-tungsten alloy: 1) ukulungiswa kwezinto ezibonakalayo: i-tungsten compounds njenge-ammonium tungstate, izinto ezisizayo ezifana ne-nickel, insimbi, ithusi nezinye izakhi noma izinhlanganisela;I-2) ukwenza i-powder: kukhona indlela yokumisa isifutho kanye nendlela yokuhlanganisa i-alloying;3) ukwakha: ngemuva kokuxuba i-tungsten powder ne-ejenti yokwakha, i-extrusion ijova emshinini wokwenza, bese izingxenye eziyinkimbinkimbi zingalungiswa;I-4) i-sintering: ngemuva kokwelashwa kwe-sintering, inhlangano ye-alloy ifana kakhulu futhi ukusebenza okuphelele kuphezulu kokusebenza okuphelele.

Izinyathelo zokulungiselela i-carbide enosimende: 1) Susa ukungcola okungaphezului-tungsten carbideizinhlayiya kanye nezinhlamvu ze-cobalt;2) Gcoba izinto ezingenhla bese uzixuba ku-mixer, bese ugaya ukuze uthole i-alloy powder;3) Khipha i-alloy powder ku-extrusion die ukuze uthole izandulela ze-carbide ezinosimende, bese uzixuba noketshezi bese wengeza isibopho ukwenza i-metal powder slurry;4) Yenza i-slurry ibe yimpushana ngokufafaza i-granulator, bese ufaka i-sinter kanye nokushisa ukushisa.bese sintered futhi iphathwe ukushisa.