◦ Muyezo wokhazikitsidwa: GB/T1222-2007.
◦ Kuchulukana: 7.85 g/cm3.
• Kupanga mankhwala
◦ Mpweya (C): 0.62%~0.70%, kupereka mphamvu zoyambira ndi kuuma.
◦ Manganese (Mn): 0.90% ~ 1.20%, kupititsa patsogolo kuuma ndi kulimbitsa mphamvu.
◦ Silicon (Si): 0.17% ~ 0.37%, kupititsa patsogolo ntchito yokonza ndi kuyeretsa mbewu.
◦ Phosphorus (P): ≤0.035%, sulfure (S) ≤0.035%, kulamulira mosamalitsa zonyansa.
◦ Chromium (Cr): ≤0.25%, faifi tambala (Ni) ≤0.30%, mkuwa (Cu) ≤0.25%, kufufuza zinthu za alloying, kuthandizira kukonza ntchito.
• Mphamvu zamakina
◦ Mphamvu zazikulu: Kulimba kwamphamvu σb ndi 825MPa~925MPa, ndipo data ina ili pamwamba pa 980MPa. Ili ndi mphamvu yabwino kwambiri yobereka ndipo ndiyoyenera kupsinjika kwambiri.
◦ Kutanuka kwabwino: Kumakhala ndi malire otanuka kwambiri, kumatha kupirira kupindika kwakukulu kopanda kusinthika kosatha, ndipo kumatha kusunga ndikutulutsa mphamvu molondola.
◦ Kuuma kwakukulu: Pambuyo pa chithandizo cha kutentha, kumatha kufika HRC50 kapena pamwamba, ndi kukana kwambiri kuvala, koyenera kuvala.
◦ Kulimba kwabwino: Pokhala ndi katundu wokhudzidwa, imatha kuyamwa mphamvu inayake popanda kusweka kwa brittle, zomwe zimapangitsa kudalirika ndi moyo wautumiki pansi pa zovuta.
• Makhalidwe
◦ Kuuma kwakukulu: Manganese amathandizira kwambiri kuuma, koyenera kupanga akasupe ndi magawo akulu okhala ndi mainchesi opitilira 20mm.
◦ Chizoloŵezi chochepa cha decarburization pamwamba: Ubwino wa pamwamba ndi wokhazikika panthawi ya chithandizo cha kutentha, kuchepetsa chiopsezo cha kulephera msanga.
◦ Kutenthedwa kwa kutentha ndi kutenthedwa kwa kutentha: Kutentha kozimitsa kuyenera kuyendetsedwa mosamalitsa, ndipo kutentha kwapakati kuyenera kupewedwa panthawi yotentha.
◦ Ntchito yabwino yopangira: imatha kupangidwa ndi kuwotcherera, yoyenera kupanga zigawo zooneka ngati zovuta, koma kuzizira kwa pulasitiki ndikotsika.
• Kutentha kwa mankhwala
◦ Kuzimitsa: Kuzimitsa kutentha kwa 830 ℃ ± 20 ℃, kuziziritsa kwamafuta.
◦ Kutentha: Kutentha kwa kutentha kwa 540 ℃ ± 50 ℃, ± 30 ℃ pakakhala zosowa zapadera.
◦ Normalizing: Kutentha 810±10℃, kuzizira kwa mpweya.
• Malo ofunsira
◦ Kupanga masika: monga akasupe a masamba agalimoto, akasupe otsekereza ma shock, akasupe a ma valve, mabango a clutch, ndi zina.
◦ Zigawo zamakina: zitha kugwiritsidwa ntchito popanga zida zolemetsa kwambiri, zogundana kwambiri monga magiya, ma bearing, ndi ma pistoni.
◦ Zida zodulira ndi kupondaponda zimafa: pogwiritsa ntchito kulimba kwake kwakukulu ndi kusamva bwino, zitha kugwiritsidwa ntchito popanga zida zodulira, kupondaponda ndi zina.
◦ Zomangamanga ndi milatho: Zitha kugwiritsidwa ntchito popanga zinthu zomwe zimakulitsa mphamvu yonyamula katundu, monga ma bearing a mlatho, zothandizira zomanga ndi zina.
Nthawi yotumiza: Jul-18-2025