Qhov zoo ntawm ntu tuaj yeem kuaj xyuas ua ntej los ntawm hardness, qhov loj me, qhov hnyav thiab qhov hnyav. Hardness yog ib qho ntawm cov cim qhia txog cov ntsiab lus ntawm qhov zoo ntawm lub taub hau cutter. Nws piav qhia txog cov hmoov hlau zoo, qauv, txheej txheem thiab lwm yam hauv cov txheej txheem tsim khoom ntawm ntu. Nyob rau hauv cov xwm txheej txiav txim los ntawm cov qauv thiab cov txheej txheem sintering, lub hardness yuav tsum nyob rau hauv ib tug tej yam ntau yam. Hauv qab lossis saum toj no ntau yam, qhov zoo ntawm lub taub hau cutter tsis zoo. Lub hardness tsawg dhau, qhia tau hais tias qhov zoo ntawm cov hlau binder tsis zoo. Feem ntau, thaum ib tug los yog concentrated hlau hmoov yog oxidized, thiab lub hardness yog qis dua HRB50, nws txhais tau hais tias cov oxidation yog heev hnyav, lub sharpness ntawm cov tau segment yog zoo, tab sis cov kev pab cuam lub neej yog heev tsis txaus. . Cov hmoov hlau me dhau, qhov hnyav ntawm cov ntaub ntawv tsis raug, cua kub ceev heev thaum lub sij hawm sintering, ua rau lub zos overheating thiab khiav tawm ntawm cov khoom, los yog siv cov qub graphite pwm, thiab lwm yam, yuav ua rau tsawg hardness. Qhov loj ntawm ntu qhia txog qhov zoo ntawm cov txheej txheem sintering. Tom qab cov nyiaj ntxiv tau raug xam kom raug, raws li cov txheej txheem sintering kom raug, qhov loj ntawm ntu raug tso cai kom muaj qhov sib txawv ntawm 0.1 hli, txwv tsis pub, yuav muaj teeb meem. Feem ntau, qhov loj me dhau lawm. Yog vim li cas yog cov hmoov yog tiag oxidized. Raws li qhov ntsuas kub thiab qhov siab, nws tseem tsis tuaj yeem cuam tshuam. Qhov kub tsis txaus, qhov alloying tsis tsim, thiab nws tsis muaj txiaj ntsig nyob rau hauv daim ntawv thov ntawm lub siab. Faib qhov tseeb qhov hnyav ntawm ntu los ntawm qhov ntim tiag tiag ntawm ntu kom tau qhov tseeb qhov ceev ntawm ntu. Kev tshuaj xyuas qhov ceev yog qhov tseem ceeb heev, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv tsis muaj durometer, qhov ceev qhia txog kev ua haujlwm ntawm ntu.
