Qhov sib txawv ntawm tungsten alloy thiab cemented carbide

Txawm hais tias ob qho tib si tungsten alloy thiabcemented carbideyog ib yam khoom ntawm kev hloov pauv hlau tungsten, ob qho tib si tuaj yeem siv rau hauv aerospace thiab aviation navigation thiab lwm yam kev lag luam, tab sis vim qhov sib txawv ntawm cov ntsiab lus ntxiv, qhov sib piv thiab cov txheej txheem ntau lawm, kev ua haujlwm thiab kev siv ntawm ob qho tib si kuj muaj qhov loj. txawv.

I. Txhais

Tungsten alloy, tseem hu ua high precision gravity alloy, yog ib qho alloy nrog tungsten hmoov raws li cov khoom siv tseem ceeb thiab npib tsib xee, hlau, tooj liab thiab lwm yam khoom siv ua cov khoom siv.Cov ntsiab lus tungsten feem ntau yog nyob nruab nrab ntawm 85% thiab 99%.

Cemented carbide, tseem hu ua tungsten steel, uas yog, yog ib qho alloy nrog refractory hlau carbide xws li tungsten carbide ua cov khoom tseem ceeb thiab cobalt, npib tsib xee, molybdenum thiab lwm yam khoom raws li cov ntaub ntawv.Cov ntsiab lus binder feem ntau yog nruab nrab ntawm 10% thiab 20%.
Thib ob, kev ua haujlwm

High precision gravity alloy muaj lub siab melting point, ceev, lub zog thiab hardness, zoo plasticity, tshav kub tsis kam, corrosion kuj, cuam tshuam tsis kam, oxidation kuj thiab shielding nyhuv.

Tungsten steel kuj muaj cov khoom zoo sib xws rau tungsten alloys, txawm hais tias nws cov thermal hardness thiab hnav tsis kam zoo yog qhov pom tseeb heev, feem ntau nyob rau hauv qhov tseeb tias nws tseem tsis tau hloov pauv ntawm 500 ° C thiab tseem muaj siab hardness ntawm 1000 ° C.Txawm li cas los xij, nws cov brittleness yog siab heev, yog li nws nqa tawm kev txiav.

Thib peb, cov txheej txheem ntau lawm

Kev npaj cov kauj ruam ntawm tungsten alloy: 1) kev npaj cov khoom: tungsten tebchaw xws li ammonium tungstate, auxiliary cov ntaub ntawv xws li npib tsib xee, hlau, tooj liab thiab lwm yam khoom los yog compounds;2) hmoov ua: muaj cov tshuaj tsuag kom qhuav thiab cov txheej txheem kev sib tsoo;3) kev sib sau: tom qab sib tov tungsten hmoov nrog kev sib sau tus neeg sawv cev, extrusion yog txhaj rau hauv lub tshuab tsim, tom qab ntawd txoj kev zoo li qhov tuaj yeem npaj tau;4) sintering: tom qab sintering kev kho mob, lub koom haum ntawm cov hlau yog zoo ib yam thiab cov kev ua tau zoo dua tag nrho cov kev ua tau zoo.

Cov kauj ruam rau kev npaj ntawm cemented carbide: 1) Tshem tawm cov impurities saum npoo ntawmtungsten carbideparticles thiab cobalt nplej;2) Sib tsoo cov ntaub ntawv saum toj no thiab sib tov rau hauv lub tov khoom, ces zom lawv kom tau cov hmoov hlau alloy;3) Extrude cov hmoov txhuas rau hauv qhov extrusion tuag kom tau cov cemented carbide precursors, ces sib tov nrog kua thiab ntxiv binder los ua hlau hmoov slurry;4) Ua cov slurry rau hauv cov hmoov los ntawm cov tshuaj tsuag granulator, ces sinter thiab kho cua sov.ces sintered thiab tshav kub kho.