ʻO ka ʻokoʻa ma waena o ka tungsten alloy a me ka carbide cemented

ʻOiai ʻelua tungsten alloy acarbide simahe ʻano huahana alloy o ka transition metal tungsten, hiki ke hoʻohana ʻia ʻelua i ka aerospace a me ka hoʻokele mokulele a me nā kahua ʻē aʻe, akā ma muli o ka ʻokoʻa o nā mea i hoʻohui ʻia, ka hoʻohui ʻana a me ke kaʻina hana, ʻo ka hana a me ka hoʻohana ʻana o lāua ʻelua he nui. ʻokoʻa.

I. Wehewehe

ʻO ka tungsten alloy, i ʻike ʻia ʻo ka alloy gravity kikoʻī kiʻekiʻe, he mea hoʻohui me ka pauka tungsten ma ke ʻano he kumu waiwai a me ka nickel, hao, keleawe a me nā mea ʻē aʻe e like me nā mea kōkua.ʻO ka ʻike tungsten ma waena o 85% a me 99%.

carbide sima, i ʻike ʻia ʻo tungsten steel, ʻo ia hoʻi, he mea hoʻohui me ka carbide metala refractory e like me ka tungsten carbide e like me ka mea nui a me ka cobalt, nickel, molybdenum a me nā mea ʻē aʻe e like me ka binder.Aia ma waena o 10% a me 20% ka mea paʻa.
ʻO ka lua, ka hana

Loaʻa i ke kiʻekiʻe o ka gravity alloy kahi helu heheʻe kiʻekiʻe, density, ikaika a paʻakikī, ʻoi aku ka maikaʻi o ka plasticity, ka pale wela, ka pale ʻana i ka corrosion, ka hopena o ka hopena, ka pale ʻana a me ka hopena pale.

ʻO ke kila Tungsten kekahi mau waiwai like me nā tungsten alloys, ʻoiai ʻo kona paʻakikī wela a me ke kūpaʻa kūʻē ʻana he mea maopopo loa, ʻoiai ʻo ia ka mea i hoʻololi ʻole ʻia ma 500 ° C a ʻoi aku ka paʻakikī ma 1000 ° C.Eia nō naʻe, kiʻekiʻe loa kona brittleness, no laila ke hana nei ia i ka hana ʻoki.

ʻO ke kolu, ke kaʻina hana

Nā papa hana hoʻomākaukau o ka tungsten alloy: 1) ka hoʻomākaukau ʻana i nā mea: nā pūhui tungsten e like me ka ammonium tungstate, nā mea kōkua e like me ka nickel, ka hao, ke keleawe a me nā mea ʻē aʻe a i ʻole nā ​​​​hui;2) hana pauka: aia nā ʻano hana hoʻomaloʻo a me nā ʻano hana hoʻoheheʻe mechanical;3) hana: ma hope o ka hui ʻana i ka pauka tungsten me ka mea hoʻokumu, hoʻokomo ʻia ka extrusion i loko o ka mīkini hana, a laila hiki ke hoʻomākaukau ʻia nā ʻāpana ʻano paʻakikī;4) sintering: ma hope o ka mālama ʻana i ka sintering, ʻoi aku ka lōʻihi o ka hoʻonohonoho ʻana o ka alloy a ʻoi aku ka nui o ka hana holoʻokoʻa.

Nā ʻanuʻu no ka hoʻomākaukau ʻana i ka carbide i hoʻopaʻa ʻia: 1) Wehe i ka lepo lepo otungsten carbidenā ʻāpana a me nā ʻano kobalt;2) E ʻohi i nā mea i luna a hoʻohui ʻia i loko o ka mea hui, a laila e wili iā lākou e loaʻa ai ka pauka alloy;3) E hoʻokuʻu i ka pauka i loko o ka extrusion make e kiʻi i nā precursors carbide cemented, a laila e hui pū me ka wai a hoʻohui i ka binder e hana i ka slurry pauda metala;4) E hana i ka slurry i ka pauka ma ka spray granulator, a laila sinter a me ka mālama wela.a laila hoʻopaʻa ʻia a mālama ʻia i ka wela.