Musiyano pakati pe tungsten alloy uye simende carbide

Kunyangwe zvese tungsten alloy uyesimende carbideimhando yealloy chigadzirwa cheshanduko yesimbi tungsten, ese anogona kushandiswa mune aerospace uye nendege navigation uye mamwe minda, asi nekuda kwekusiyana kwezvinhu zvakawedzerwa, chiyero chekuumbwa uye maitiro ekugadzira, kuita uye kushandiswa kwezvose zviri zviviri zvine hombe. musiyano.

I. Tsanangudzo

Tungsten alloy, inozivikanwawo seyakakwira chaiyo giravhiti alloy, ialloy ine tungsten poda seyakanyanya mbishi zvinhu uye nickel, simbi, mhangura uye zvimwe zvinhu seyekubatsira zvinhu.Iyo tungsten yemukati kazhinji iri pakati pe85% ne99%.

Cemented carbide, inozivikanwawo se tungsten simbi, kureva kuti, ialloy ine refractory simbi carbide senge tungsten carbide sechinhu chikuru chinosanganisa uye cobalt, nickel, molybdenum uye zvimwe zvinhu sebinder.Iyo binder yemukati kazhinji iri pakati pe10% ne20%.
Chechipiri, kuita

Yakakwirira yakananga giravhiti alloy ine yakakwira kunyungudika, density, simba uye kuoma, zviri nani plasticity, kupisa kupisa, corrosion resistance,, kukanganisa kupikisa, oxidation kuramba uye kudzivirira.

Tungsten simbi inewo zvimiro zvakafanana kune tungsten alloys, kunyangwe kuomarara kwayo kwekupisa uye kupfeka kwakanakira kuramba kuri pachena, kunyanya mukuti inoramba isina kuchinjika pa500 ° C uye ichine kuoma kwakanyanya pa1000 ° C.Nekudaro, iyo brittleness yakakwira zvakanyanya, saka inoita kucheka kugadzirwa.

Chechitatu, nzira yekugadzira

Kugadzirira matanho e tungsten alloy: 1) zvinhu zvekugadzirira: tungsten makemikari akadai seammonium tungstate, zvinhu zvinobatsira zvakadai se nickel, iron, mhangura uye zvimwe zvinhu kana makemikari;2) poda kugadzira: kune kupfapfaidza kuomesa nzira uye mechanical alloying nzira;3) kuumba: mushure mekusanganisa tungsten poda neanogadzira agent, extrusion inopinzwa mumushini wekugadzira, ipapo zvikamu zvakaoma-zvakaumbwa zvinogona kugadzirwa;4) sintering: mushure mekuita sintering, sangano re alloy rinowedzera yunifomu uye kushanda kwakazara kwepamusoro kwekuita kwese.

Matanho ekugadzirira simende carbide: 1) Bvisa kusvibiswa kwepamusoro kwetungsten carbidezvidimbu uye cobalt zviyo;2) Pwanya izvo zviri pamusoro uye zvisanganise mumusanganisi, wobva wazvikuya kuti uwane alloy powder;3) Bvisa iyo alloy poda mu extrusion die kuti uwane simende carbide precursors, wozosanganisa iwo nemvura uye wobva wawedzera binder kuita simbi poda slurry;4) Ita slurry kuita hupfu nekupfapfaidza granulator, wobva waita sinter uye kupisa kubata.ipapo sintered uye kupisa kurapwa.