20Cr aloyi opanda chitsulo chitolirondi aloyi structural zitsulo mapaipi ndi linanena bungwe lalikulu m'dziko langa ndipo ali osiyanasiyana ntchito.Chinese GB muyezo zitsulo nambala 20Cr;Japanese JIS muyezo zitsulo nambala SCr22;German DIN muyezo zitsulo nambala 20Cr4;British BS muyezo zitsulo nambala 590M17;French NF muyezo zitsulo nambala 18C3;American AISI/SASTM nambala yachitsulo 5120;International Standards Organization ISO muyezo zitsulo No. 20Cr4.
Makhalidwe
20Cr aloyi chitsulo chitoliroali ndi kuuma bwino, kulimba kwapakati komanso kulimba.Kuuma kwa mafuta kuzimitsa mpaka theka la kuuma kwa martensitic ndi Φ20-Φ23mm.Pambuyo pa carburizing ndi kuzimitsa mankhwala olimbikitsa pamwamba, martensite abwino ngati singano adzapezeka pamwamba pa nkhungu ndi kuuma kwa 58-62HRC;mawonekedwe otsika a carbon martensite adzapezedwa pakati ndi kuuma kwa 35-40HRC.Matrix ali ndi mphamvu zambiri komanso kulimba, ndipo amatha Kukwaniritsa zofunikira pakulimba kwambiri, kulimba kwambiri, kulimba kwambiri komanso kukana dzimbiri koyenera kwa nkhungu zozizira.Normalizing imatha kulimbikitsa spheroidization ya kapangidwe kake, kuyeretsa proeutectoid ferrite yayikulu, ndikuwongolera magwiridwe antchito opanda kanthu.
Kugwiritsa ntchito
20Cr mipope yachitsulo yopanda msokoAmagwiritsidwa ntchito kwambiri popanga zida zamoto (zozimitsa mafuta) zomwe zimafunikira mphamvu yayikulu, kuvala pamwamba, magawo odutsa pansi pa 30mm, kapena mawonekedwe ovuta ndi katundu wochepa, monga: zida zama gearbox zida, ma giya, ma Cams, nyongolotsi, piston. , zokokera zikhadabo, etc.;kwa magawo ang'onoang'ono kutentha mapindikidwe kutentha ndi mkulu kuvala kukana, mkulu-pafupipafupi pamwamba quenching ayenera kuchitidwa pambuyo carburization, monga magiya, shafts.20Cr mapaipi opanda msokoItha kugwiritsidwanso ntchito pakuzimitsidwa ndi kupsya mtima kupanga magawo omwe amagwira ntchito mothamanga kwambiri komanso kupirira katundu wocheperako.Itha kugwiritsidwanso ntchito ngati chitsulo chochepa cha carbon martensitic quenching kuti muwonjezere mphamvu zokolola komanso kulimba kwachitsulo.
Nthawi yotumiza: Dec-19-2023