Taw qhia ntawm hmoov metallurgy cov ntaub ntawv sib txhuam (hauv qab)

Taw qhia ntawm hmoov metallurgy cov ntaub ntawv sib txhuam (hauv qab)
Txoj kev loj hlob ntawm cov tshuab niaj hnub mus rau kev kub ceev thiab kev thauj khoom siab yuav tsum tau ua tiav ntau thiab ntau dua ntawm kev sib txhuam cov ntaub ntawv, yog li hmoov metallurgy kev sib txhuam cov ntaub ntawv tau dhau los ua qhov tseem ceeb.
Cov khoom muaj pes tsawg leeg yog tsim los ntawm lub hauv paus hlau, lubrication element thiab kev sib txhuam. Nws cov qauv yog tus cwj pwm los ntawm: ntau yam ntawm cov khoom uas muaj cov khoom tshwj xeeb yog uniformly faib nyob rau hauv lub nruam hlau matrix, lub tom kawg ua lub luag hauj lwm nyob rau hauv thermal conductivity thiab dais txhua yam kev nyuaj siab, lub qub los xyuas kom meej kev sib txhuam kev ua tau zoo. Cov ntaub ntawv siv rau txhua yam yog kwv yees li hauv qab no:
Lub hauv paus hlau tooj liab-raws li cov ntaub ntawv feem ntau yog tin, lead, zinc alloys, zoo thermal conductivity, corrosion kuj, kev sib txhuam zoo, feem ntau yog siv hauv "ntub" clutches. Hlau-raws li cov ntaub ntawv muaj ntau dua coefficient ntawm kev sib txhuam thiab kub ua hauj, thiab feem ntau yog siv nyob rau hauv qhuav, hnyav-duty brakes.
Lubrication Cheebtsam Feem ntau yog siv graphite thiab txhuas, qee zaum molybdenum sulphide, tooj liab sulfide, barium sulphide los yog boron nitride thiab lwm yam khoom lubricants kuj tseem siv. Tsawg melting point ntawm txhuas, tin, thiab lwm yam yuav yaj ib nrab ntawm qhov kub thiab txias, uas tuaj yeem nqus kev sib txhuam kub thiab tsim ib zaj duab xis rau ntawm qhov chaw sib txhuam los tiv thaiv kev sib txuas, kev sib tsoo thiab puas.
Kev sib txhuam Cheebtsam Siv los ua kom cov coefficient ntawm kev sib txhuam ntawm cov khoom siv, piv txwv li los ua kom muaj zog rau zawv zawg. Cov khoom tseem ceeb yog oxides (SiO2, Al2O3, Cr2O3), carbides (SiC, B4C) thiab minerals (asbestos, mullite, thiab lwm yam).
Kev tsim cov txheej txheem Txhawm rau kom muaj peev xwm tiv taus lossis hloov siab los yog lub zog kinetic, cov ntaub ntawv sib txhuam feem ntau yog sintered ntawm cov hlau phaj. Cov txheej txheem tsim khoom feem ntau yog hmoov npaj, dosing, sib tov, nias (saib hmoov metallurgy forming) thiab sintering. Feem ntau muaj ob hom kev nias: ib qho yog thawj zaug yuav tsum sib xyaw cov hmoov sib tov sib xyaw, thiab tom qab ntawd nias sintering ntawm cov phaj steel; ib tug yuav muab cov hmoov sib tov ncaj qha rau ntawm lub phaj steel rau pressurized sintering.
Sintering ntawm ib sab yog ua kom lub zog sib txuas ntawm cov khoom hauv cov hmoov txheej, ntawm qhov tod tes, nrog kev pab ntawm qhov kub thiab txias, kom cov hmoov txheej thiab cov phaj hlau ruaj khov ua ke. Sintering feem ntau yog ua nyob rau hauv nruab nrab los yog txo qhov cua nyob rau hauv lub "Tswb-hom" sintering rauv qhov twg cov qauv tuaj yeem raug pressurised. Kev sib txhuam discs kuj yog tsim los ntawm kev txau thiab hmoov dov. Txhua txoj kev muaj nws tus kheej qhov zoo thiab qhov tsis zoo, thiab nws yog ib qho tseem ceeb uas yuav tsum xaiv cov khoom tsim nyog thiab cov txheej txheem raws li qhov yuav tsum tau ua ntawm daim ntawv thov.