Ndodo yolumikizira imapereka mphamvu zokolola za 800MPa, kusinthasintha kwamphamvu kwa 800kJ/m2 ndi kulimba kwapakati kwa 22HRC~25HRC.Mphamvu yapamwamba ya CO2 yotchinga mpweya imagwiritsidwa ntchito kuonetsetsa mphamvu ya njira yolumikizira.Chingwe chamkati chimapangidwa ndi chitsulo cha spheroidal graphite cast iron, chomwe chimatsimikizira kudzipangira nokha mafuta pamene ulalo wa ndowa ukugwira ntchito.
Popeza kuti zomangira nsonga sizimasungunuka, zibowozo pamapeto pake zidzatha ndipo ziyenera kusinthidwa. Kuwonongeka kwa zolumikizira zonse ziwiri za ndowa kutha chifukwa cha zikhomo zomwe zimabwera mozungulira pakukumba, kapena kuwononga zinthu monga kunyamulira unyolo.Maulalo owonongeka akuyenera kusinthidwa nthawi yomweyo kuti apewe kuwonongeka kwa ndowa, mkono wa dipper, ndi ndowa yamphongo.
Kuti mukhale omasuka timasunga maulalo owongolera awiriawiri, ndi maulalo a ndowa opanda tchire, kukupatsani mwayi wogwiritsanso ntchito tchire pomwe zidakali bwino.
