It is mainly used on the shock
damper assembly of everyone models.Its materal
belongs to Fe-Cu-C system.The typical part
include piston,guide seat of connecting rod,compression
valve seat.The processing technique:forming-sintering-shaping-machining.In
order to improve the wearing resistance,steam
technique is applied on some part.Full forming
is realizde on some part to ensure accuracy.therefore,the
purpose of cutting and no cutting has been
reached.