Zida zokutira za carbide zili ndi zabwino izi:
(1) Chophimba chapamwamba chimakhala cholimba kwambiri komanso kukana kuvala. Poyerekeza ndi carbide uncoated simenti, ndi TACHIMATA simenti carbide amalola ntchito liwilo apamwamba kudula, potero kumapangitsanso processing dzuwa, kapena Iwo akhoza kwambiri kuonjezera moyo chida pa liwiro lomwelo kudula.
(2) Coefficient ya kukangana pakati pa zinthu zokutira ndi zinthu zowonongeka ndizochepa. Poyerekeza ndi carbide yosakanizidwa yosakanizidwa, mphamvu yodula ya carbide yokhala ndi simenti imachepetsedwa pang'onopang'ono, ndipo kukonzedwa pamwamba kumakhala bwinoko.
(3) Chifukwa cha magwiridwe antchito abwino, mpeni wokutidwa wa carbide umakhala wabwinoko komanso magwiridwe antchito ambiri. Njira yomwe imagwiritsidwa ntchito kwambiri pakuyatira simenti ya carbide ndi kutentha kwambiri kwa chemical vapor deposition (HTCVD). Plasma chemical vapor deposition (PCVD) imagwiritsidwa ntchito kutikita pamwamba pa carbide yopangidwa ndi simenti.
Mitundu yokutira ya simenti odula mphero carbide:
Zida zitatu zomwe zimagwiritsidwa ntchito kwambiri ndi titanium nitride (TiN), titanium carbonitride (TiCN) ndi titanium aluminide (TiAIN).
Kupaka kwa titaniyamu nitride kumatha kukulitsa kuuma ndi kuvala kukana kwa chipangizocho, kuchepetsa kugundana kwamphamvu, kuchepetsa m'badwo wa m'mphepete, ndikuwonjezera moyo wa chida. Zida zokutira za titaniyamu nitride ndizoyenera kukonza chitsulo chochepa cha aloyi ndi chitsulo chosapanga dzimbiri.
Pamwamba pa zokutira za titaniyamu carbonitride ndi imvi, kuuma kwake ndikwapamwamba kuposa kwa titaniyamu nitride zokutira, ndipo kukana kuvala kuli bwino. Poyerekeza ndi titaniyamu nitride ❖ kuyanika titaniyamu carbonitride ❖ kuyanika chida akhoza kukonzedwa pa liwiro lalikulu chakudya ndi kudula liwiro (40% ndi 60% apamwamba kuposa kuti titaniyamu nitride ❖ kuyanika, motero), ndi workpiece zinthu kuchotsa mlingo ndi apamwamba. Zida zokutira za Titaniyamu carbonitride zimatha kukonza zida zosiyanasiyana zogwirira ntchito.
Chophimba cha titaniyamu aluminide ndi imvi kapena chakuda. Imakutidwa makamaka pamwamba pa chida cha simenti cha carbide. Ikhoza kukonzedwanso pamene kutentha kwapakati kufika 800 ℃. Ndizoyenera kudula mothamanga kwambiri. Pa kudula kowuma, tchipisi tating'onoting'ono tating'onoting'ono titha kuchotsedwa ndi mpweya woponderezedwa. Titaniyamu aluminide ndi yoyenera pokonza zinthu zosalimba monga chitsulo cholimba, titaniyamu aloyi, aloyi opangidwa ndi faifi tambala, chitsulo chosungunuka ndi aloyi wapamwamba wa silicon aluminium.
Kupaka utoto wodula simenti wa carbide:
Kupita patsogolo kwaukadaulo wopaka zida kumawonekeranso muzochita za nano-coating. Kupaka mazana azinthu zokhala ndi makulidwe a nanometer angapo pazida zoyambira kumatchedwa nano-coating. Kukula kwa tinthu tating'onoting'ono ta nano-coating ndi kakang'ono kwambiri, kotero malire a tirigu ndiatali kwambiri, omwe amakhala ndi kuuma kwapamwamba kwambiri. Mphamvu ndi fracture kulimba.
Kuuma kwa Vickers kwa nano-coating kumatha kufika HV2800 ~ 3000, ndipo kukana kuvala kumatheka ndi 5% ~ 50% kuposa zida za micron. Malinga ndi malipoti, pakali pano, zida za 62 zokutira zokhala ndi zokutira zosinthika za titaniyamu carbide ndi titaniyamu carbonitride ndi zigawo 400 za zida za TiAlN-TiAlN/Al2O3 zopangidwa nano zapangidwa.
Poyerekeza ndi zokutira zolimba zomwe tazitchula pamwambapa, sulfide (MoS2, WS2) yokutidwa pazitsulo zothamanga kwambiri imatchedwa ❖ kuyanika kofewa, komwe kumagwiritsidwa ntchito makamaka podula zitsulo zotayidwa zamphamvu kwambiri, titaniyamu ndi zitsulo zina zosowa.
Ngati muli ndi chosowa, chonde lemberani XINFA, tili okonzeka kupereka zida zokhazikika pakanthawi kochepa komanso zida zosinthira makasitomala.
Nthawi yotumiza: Aug-14-2015
