Niaj hnub no, hmoov metallurgy tau tuaj ib txoj kev ntev thiab tsis deb ntawm lub ntiaj teb cov khoom nyuaj tshaj plaws, pob zeb diamond.
Hmoov? Nws suab tsis ntseeg, tab sis ib qho ntawm lub ntiaj teb cov khoom siv nyuaj tshaj plaws yog tsim los ntawm hmoov.
Ntawm no yog dab tsi tom qab tsim khoom ntawmtungsten carbide ntxig.
Hmoov
Tungsten oxide yog sib xyaw nrog cov pa roj carbon thiab ua tiav hauv qhov cub tshwj xeeb los tsim cov khoom siv tungsten carbide, cov khoom siv tseem ceeb rau txhua tus carbides. Tungsten carbide yog qhov nyuaj thiab siv tau zoo heev thiab siv los ua cov khoom siv tseem ceeb ntawm carbide. Tungsten carbide yog tov nrog cobalt, uas yog qhov tseem ceeb rau cov yam ntxwv ntawm carbide. Ntau dua cobalt, cov kev ua kom nruj dua ntawm carbide; Qhov tsawg dua cobalt, qhov nyuaj thiab ntau dua hnav-resistant nws yog. Qhov hnyav piv ntawm cov khoom sib txawv yog ua nrog qhov tseeb tshaj plaws. Ib pob ntawm 420 kg ntawm raw cov ntaub ntawv tsis tuaj yeem sib txawv los ntawm ntau dua 20 gram. Kev sib xyaw yog cov khoom lag luam me me. Thaum kawg, cov sib tov yog av rau hauv kev nplua thiab ua kom zoo zoo hmoov hauv lub pob loj loj. Cov sib tov yuav tsum muaj tshuaj tsuag-ziab kom ua tiav qhov tseeb. Tom qab sib tsoo, cov hmoov muaj qhov loj me ntawm ø 0.5-2.0 um.
Tseem ceeb
Ua ntej, cov qauv yooj yim thiab qhov loj me yog tau los ntawm nias nrog ib qho punch thiab tuag nyob rau hauv ib tug zoo siv tshuab cnc-tswj xovxwm. Tom qab nias, cov hniav zoo li zoo ib yam li mob carbide tiag tiag, tab sis lub hardness nyob deb ntawm qib yuav tsum tau. Ib tug neeg hlau hloov cov hlua khi rau ib qho disc ua los ntawm cov khoom kub-tiv taus.
Sumining
Rau kev ua kom tawv tawv, cov hniav yog cua sov kho thaum 1500 degrees Celsiius rau 15 teev. Cov txheej txheem Siltinging ua rau cov niam txiv tsis sib haum nrog lub tungsten carbide hais. Lub sinsing rauv txheej txheem ua ob yam: cov hniav yuav ua kom muaj tseeb, uas yuav tsum muaj tseeb kom tau txais qhov tseeb ua kom tau; Thib ob, cov hmoov sib xyaw ua ke yog hloov mus rau hauv cov khoom siv tshiab nrog cov khoom siv me me, uas dhau los ua carbide. Hniav yog tam sim no nyuaj raws li qhov xav tau, tab sis tseem tsis tau npaj rau kev xa khoom. Ua ntej ib kauj ruam tom ntej, cov hniav qhov ntev yog ua tib zoo soj ntsuam hauv cov tshuab ntsuas sib txuas lus.
Kev sib tsoo
Lub carbide hniav tsuas yog muab cov duab yog los ntawm pob zeb diamond sib tsoo. Cov hniav tawg ntau ntau txoj kev sib tsoo nyob ntawm cov duab ntsuas duab geometric. Feem ntau cov sib tsoo tshuab muaj cov kev ntsuas tsim tsa los kuaj xyuas thiab ntsuas cov hniav hauv ob peb theem.
Ntug Kev Npaj
Kev txiav ntug yog kho kom tau txais cov duab kom raug rau cov hnav ntau tshaj rau cov txheej txheem xav tau. Cov ntxig no tuaj yeem txhuam nrog cov txhuam hniav tshwj xeeb nrog cov tshuab silicon carbide txheej. Xijpeem txoj kev ua yog siv, qhov kawg yuav tsum yog kuaj. 90% -95% ntawm txhua qhov kev ntxig muaj qee yam txheej. Nco ntsoov tias tsis muaj cov ntsiab lus txawv teb chaws ntawm cov npoo ntawm cov ntxig kom tiv thaiv lawv los ntawm kev ua yeeb yam rau cov cuab yeej.
Daim plhaub
Chemical Vapor Deposition (CVD) thiab lub cev vapor deposition (PVD) yog ob txoj kev uas twb muaj lawm. Qhov kev xaiv ntawm txoj kev twg yog nyob ntawm cov khoom thiab kev ua qauv. Cov txheej txheej txheej tuab yog nyob ntawm cov ntawv thov nkag. Cov txheej txiav txiav txim siab lub durability ntawm cov ntxig thiab lub neej ntawm cov ntxig. Lub tswv yim paub-yuav ua li cas thov ntau txheej nyias nyias ntawm carbide, xws li titanium carbide, uas tuaj yeem nce cov kev pab cuam lub neej thiab kav ntev.
Yog tias CVD txoj kev siv rau txheej, cov hniav tau muab tso rau hauv cov cub tawg, thiab chlorides thiab oxides ntxiv rau hauv cov qauv siv tshuaj me me nrog tshuaj methane thiab hydrogen. Thaum 1000 degree degrees Celsius, cov gases sib cuam tshuam thiab kuj ua rau ntawm carbide, kom cov hniav yog ib qho homogeneous coating tsuas yog ob peb txhiab ntawm millimeter tuab. Qee cov coated hniav muaj cov npoo av, uas ua rau lawv muaj txiaj ntsig ntau dua thiab lawv cov kev ruaj khov yog nce los ntawm 5 zaug piv rau cov hniav tsis sib thooj. PVD, ntawm qhov tod tes, yog txau ntawm cov hniav ntawm 400 degrees Celsius.
Kev kuaj xyuas zaum kawg, khij thiab ntim khoom
Qhov tawg dhau dhau ntawm kev tshuaj ntsuam xyuas ib qho, thiab tom qab ntawd peb laser cim cov khoom ntawm cov hniav thiab thaum kawg ntim lawv. Cov kab hniav lub thawv yog cim nrog cov ntaub ntawv khoom, muaj pes tsawg tus lej thiab hnub tim, uas yog cov neeg siv tau txais kev pabcuam zoo heev thiab.
Lub txhab
Tom qab ntim khoom, cov hniav yog npaj rau kev xa khoom rau cov neeg siv khoom. Peb muaj cov chaw xa tawm hauv Tebchaws Europe, Tebchaws Asmeskas thiab Asia kom ntseeg tau tias cov hniav tau xa mus rau cov neeg siv khoom sai thiab zoo.
Lub Sijhawm Post: Feb-19-2025