Tau ntev, ntau tus neeg hauv kev lag luam xav tias cemented carbide yog tungsten steel. Niaj hnub no peb yuav tham txog qhov sib txawv ntawm cemented carbide thiab tungsten steel.
01 Carbide ua
Cemented carbide yog ua los ntawm cov khoom siv tawv tawv ntawm cov hlau refractory thiab cov hlau sib txuas los ntawm cov hmoov hlau metallurgy, thiab yog cov khoom siv hlau uas muaj zog heev. Tungsten carbide (WC) yog cov khoom tseem ceeb ntawm cov cemented carbide, suav txog 70 feem pua -97 feem pua ntawm tag nrho cov muaj pes tsawg leeg; bonding hlau yog siv rau kev sib txuas ntawm cov hlau, thiab cov ntsiab lus feem ntau yog 3 feem pua -30 feem pua. Thaum lub sij hawm sintering txheej txheem, Nws muaj peev xwm nyob ib puag ncig thiab nruj daim ntawv cog lus tungsten carbide hmoov ua ke, thiab nws ua cemented carbide tom qab txias.
Yog li ntawd, feem ntau siv cemented carbides tau muab faib ua peb pawg raws li lawv qhov muaj pes tsawg leeg thiab kev ua haujlwm zoo: tungsten-cobalt, tungsten-titanium-cobalt, thiab tungsten-titanium-tantalum (niobium). Feem ntau siv hauv kev tsim khoom yog tungsten-cobalt thiab tungsten-titanium-cobalt cemented carbide.
1) Tungsten-cobalt cemented carbide
Cov khoom tseem ceeb yog tungsten carbide (WC) thiab cobalt. Qib yog sawv cev los ntawm tus lej YG (lub npe ntawm ob lub cim "nyuaj" thiab "cobalt" hauv Suav pinyin), ua raws li tus nqi feem pua ntawm cov ntsiab lus cobalt. Piv txwv li, YG6 txhais tau hais tias tungsten-cobalt cemented carbide nrog cov ntsiab lus cobalt ntawm 6 feem pua, thiab cov ntsiab lus tungsten carbide ntawm 94 feem pua.
2) Tungsten-titanium-cobalt cemented carbide
Cov khoom tseem ceeb yog tungsten carbide (WC), titanium carbide (TiC) thiab cobalt. Qib yog sawv cev los ntawm tus lej YT (lub npe ntawm ob lub cim "nyuaj" thiab "titanium" hauv Suav pinyin), ua raws li tus nqi feem pua ntawm cov ntsiab lus titanium carbide. Piv txwv li, YT15 txhais tau hais tias tungsten-titanium-cobalt cemented carbide nrog titanium carbide cov ntsiab lus ntawm 15 feem pua.
3) Tungsten-titanium-tantalum (niobium)-raws li cemented carbide
Hom cemented carbide no tseem hu ua general-purpose cemented carbide los yog universal cemented carbide. Cov khoom tseem ceeb yog tungsten carbide (WC), titanium carbide (TiC), tantalum carbide (TaC) lossis niobium carbide (NbC) thiab cobalt. Qib yog sawv cev los ntawm tus lej YW (lub npe ntawm ob lub cim "nyuaj" thiab "wan" hauv Suav pinyin) ua raws li tus lej.
Qib thiab tshuaj muaj pes tsawg leeg ntawm feem ntau siv cemented carbide:
Ntxiv cov duab rau WeChat: mvm9987 yuav xa cov lus qhia CNC
Lus Cim: "X" tom qab lub npe txhais tau tias zoo-grained alloy, "C" txhais tau tias coarse-grained alloy, thiab tsis muaj lo lus txhais tau tias dav dav hlau alloy.
02 Qhov txawv ntawm tungsten steel thiab cemented carbide
Feem ntau hais lus, tungsten steel yog smelted los ntawm kev ntxiv tungsten raw cov ntaub ntawv rau hauv molten steel los ntawm steelmaking txheej txheem, kuj hu ua high-speed steel los yog cov cuab yeej steel, thiab nws cov ntsiab lus tungsten feem ntau yog 15-25 feem pua. Ntxiv nrog rau kev tsim cov hlau kub ceev los ntawm kev smelting, kuj tseem muaj cov hmoov hlau metallurgy high-speed steel, uas zam kev txo cov khoom siv hluav taws xob thiab kev kho cua sov deformation los ntawm carbide segregation los ntawm smelting.
Cemented carbide yog sintered nrog tungsten carbide ua lub cev tseem ceeb thiab cobalt lossis lwm yam hlau sib txuas los ntawm cov txheej txheem hmoov metallurgy, thiab nws cov ntsiab lus tungsten feem ntau yog siab dua 80 feem pua.
Cias muab, tag nrho cov alloys nrog ib tug hardness tshaj HRC65 yuav hu ua cemented carbide, yog li tungsten carbide belongs rau cemented carbide; Tab sis nruj me ntsis hais lus, cemented carbide tsis tas tungsten carbide.
