Simenti carbide amapangidwa ndi kuuma mkulu, refractory zitsulo carbide (monga WC, TiC, TaC, NbC, etc.) kuphatikiza zitsulo zomangira (monga cobalt, faifi tambala, etc.) kudzera ufa zitsulo ndondomeko, pakali pano ndi padziko lonse mphamvu mphamvu. aloyi, ndi kuuma mkulu (89 ~ 93Hm), mkulu mphamvu, wabwino otentha kuuma ndi makhalidwe ena.Chifukwa chake, amagwiritsidwa ntchito kwambiri popanga zida zobowola, nkhungu ndi zida.Ndi chitukuko chosalekeza cha teknoloji yodula njira yothamanga kwambiri komanso yolondola kwambiri, kuuma, kukana kuvala, kupukuta molondola ndi kudulidwa kwapamwamba kwa zida za carbide zokhala ndi simenti ziyenera kukhala zapamwamba komanso zapamwamba.Kukula kwa njere za carbide yopangidwa ndi simenti kwayambanso pang'onopang'ono kuchokera ku zoyamba zowonongeka ndi zapakati mpaka zowonongeka, zowonongeka kwambiri komanso za nanocrystal-grained.
Pakali pano, coarse-grained cemented carbide amagwiritsidwa ntchito kwambiri mu zida za geological ndi mchere, kupondaponda kufa, kubowola mafuta, nyundo zazikulu zopangira miyala ya diamondi, mbali za injini ya jet ndi madera ena;chabwino-grained ndi ultra-fine-grained cemented carbide ali ndi makhalidwe a kuuma mkulu ndi mphamvu mkulu, izo makamaka ntchito popanga zida zolimba carbide, indexable kuika ndi micro kubowola.
Ndi kukonzanso kwa njere za WC mu carbide yopangidwa ndi simenti, zida zamakina monga kuuma ndi mphamvu zidawonjezeka, pomwe zinthu monga kulimba kwa fracture zidachepa, ndipo ntchito yogaya monga kukana kuvala idasinthanso.
Mawilo atatu osiyanasiyana amtundu wa diamondi opukutira amagwiritsidwa ntchito poyesa kugaya pansi pamikhalidwe ina yopera ya ma carbides atatu okhala ndi miyeso yosiyanasiyana ya tirigu: coarse, fine and Ultra-fine.Kupyolera mu muyeso wa mphamvu ya spindle, gudumu lopukuta ndi kutaya kwa workpiece, ndi makina opangidwa ndi makina opangidwa ndi makina opangira magetsi panthawi yopera, mphamvu ya kusintha kwa mbewu ya WC mu carbide yopangidwa ndi simenti pa ntchito yopera ndi zotsatira monga kugaya mphamvu, chiŵerengero cha kugaya, ndi kuuma kwa pamwamba kumawunikidwa.
Kupyolera muyeso, zikhoza kudziwika kuti pansi pa chikhalidwecho, magawo akupera a chopukusira pamwamba ndi ofanana, mphamvu yogaya ndi mphamvu yowonongeka yomwe ikugwiritsidwa ntchito pogaya carbide yopangidwa ndi coarse-grained cemented ndi yaikulu kuposa ya fine-grained ndi ultra-fine. -grained, ndipo mphamvu yopera ya chopukusira pamwamba imawonjezeka ndi kukwera kwa kukula kwa tirigu.Chiŵerengero chogaya cha ultra-fine cemented carbide chimawonjezeka ndi kukwera kwa kukula kwa tirigu, kusonyeza kuti kukana kwa carbide yotereyi kumachepa ndi kukula kwa tirigu, ndi kuuma kwapamwamba kwa carbide yamtundu uwu pambuyo popera bwino pansi. momwemonso akupera mikhalidwe amachepetsa ndi kuwonjezeka kwa mbewu kukula.
Kugwiritsa ntchito diamondi akupera gudumu ndi njira yaikulu kwa kupanga simenti zida carbide, ndi akupera pamwamba roughness zimakhudza kwambiri ntchito kudula ndi moyo utumiki wa simenti zida carbide, ndi magawo akupera ndi zinthu zazikulu zimene zinakhudza roughness pamwamba. simenti carbide
Chitsanzo cha WC-Co cemented carbide chinayesedwa pa makina opera pamwamba, ndipo chitsanzocho chinali chopangidwa ndi ultra-grained cemented carbide chopangidwa ndi teknoloji ya HIP.
Pa kuya chomwecho, roughness wa akupera pamwamba chitsanzo chinawonjezeka ndi kukwera kwa tinthu kukula kwa gudumu akupera.Poyerekeza ndi 150 # akupera gudumu, pamwamba roughness wa chitsanzo akupera zimasiyanasiyana pang'ono pamene akupera ndi 280 # akupera gudumu, pamene pamwamba roughness kusintha kwambiri pamene akupera ndi W20 akupera gudumu.
Nthawi yotumiza: Jan-25-2024