Nqus Sintering ntawm tungsten Carbide khoom
Nqus Sintering ntawm tungsten Carbide khoom
Nqus sintering txhais tau hais tias hmoov, hmoov compacts, los yog lwm yam ntaub ntawv ntawm cov ntaub ntawv yog rhuab ntawm ib tug haum kub nyob rau hauv ib tug nqus tsev vacuum ib puag ncig kom ua tiav cov kev sib txuas ntawm hais los ntawm atomic migration. Sintering yog ua kom ntxeem tau hmoov compacts uas muaj alloys nrog qee yam qauv thiab cov khoom.
Cemented carbide nqus sintering yog txheej txheem ntawm sintering nyob rau hauv 101325Pa. Sintering nyob rau hauv lub tshuab nqus tsev zoo heev txo qhov cuam tshuam ntawm cov pa adsorbed ntawm cov hmoov av thiab cov roj hauv cov qhov hws kaw ntawm qhov ntom ntom. Sintering yog tau txais txiaj ntsig rau cov txheej txheem diffusion thiab densification thiab tuaj yeem zam qhov kev tawm tsam ntawm cov hlau thiab qee cov ntsiab lus nyob rau hauv cov huab cua thaum lub sijhawm Sintering thaum lub sijhawm Sintering. Txhim kho qhov ntub dej ntawm cov kua binder theem thiab cov hlau nyuaj, tab sis lub tshuab nqus tsev sintering yuav tsum tau them sai sai rau kev tiv thaiv cov evaporation poob ntawm cobalt.
Cemented carbide nqus sintering feem ntau tuaj yeem muab faib ua plaub theem. Muaj cov txheej txheem tshem tawm plasticizer, pre-sintering theem, high-temperature sintering theem, thiab cua txias theem.
Qhov zoo ntawm lub tshuab nqus tsev sintering ntawm cemented carbide yog:
1. Txo cov pa phem ntawm cov khoom los ntawm cov pa phem hauv ib puag ncig. Piv txwv li, nws yog ib qho nyuaj heev kom ncav cuag lub lwg point ntawm rho tawm 40 ℃ rau cov dej ntsiab lus ntawm hydrogen generated los ntawm electrolysis, tab sis nws tsis yog nyuaj kom tau xws li ib tug degree ntawm nqus tsev vacuum;
2. Lub tshuab nqus tsev yog qhov zoo tshaj plaws inert roj. Thaum lwm cov roj retorative thiab inert gases tsis haum, los yog rau cov ntaub ntawv uas nquag decarburization thiab carburization, nqus sintering yuav siv tau;
3. Lub tshuab nqus tsev tuaj yeem txhim kho qhov ntub dej-muaj peev xwm ntawm cov kua theem sintering, uas yog qhov zoo rau shrinkage thiab txhim kho cov qauv ntawm cemented carbide;
4. Lub tshuab nqus tsev pab tshem tawm impurities lossis oxides xws li Si, Al, Mg, thiab ntxuav cov ntaub ntawv;
5. Lub tshuab nqus tsev tau txais txiaj ntsig los txo cov roj adsorbed (cov roj seem hauv cov pores thiab cov khoom siv roj) thiab muaj txiaj ntsig zoo rau kev txhawb nqa shrinkage tom qab theem ntawm sintering.
Los ntawm kev xav txog kev lag luam, txawm hais tias lub tshuab nqus tsev sintering khoom muaj peev txheej loj thiab cov khoom siv hluav taws xob tsawg, kev siv hluav taws xob tsawg, yog li tus nqi ntawm kev tswj lub tshuab nqus tsev yog qis dua tus nqi ntawm kev npaj ib puag ncig. Nyob rau hauv cov kua theem ntawm sintering nyob rau hauv lub nqus tsev vacuum, lub volatilization poob ntawm cov binder hlau kuj yog ib qho teeb meem tseem ceeb, uas tsis tsuas yog hloov thiab cuam tshuam rau qhov kawg muaj pes tsawg leeg thiab cov qauv ntawm cov alloy, tab sis kuj cuam tshuam cov txheej txheem sintering nws tus kheej.
Cemented carbide ntau lawm yog txheej txheem nruj. ZZBETTER siv txhua yam kev tsim khoom tiag tiag, nruj me ntsis tswj qhov zoo ntawm cov khoom cemented carbide, thiab muab kev daws teeb meem rau kev ua haujlwm hnyav.
Yog tias koj txaus siab rau cov khoom lag luam tungsten carbide thiab xav paub ntau ntxiv thiab cov ntsiab lus, koj tuaj yeem tiv tauj peb hauv xov tooj lossis xa ntawv ntawm sab laug, lossis xa mus rau US MAIL hauv qab ntawm nplooj ntawv.
