抄録
It was tested that the influence of the microstructure of cast iron and surface roughness of friction parts upon wear. The results of this experiments may be summarised as follows :
(1) I have not find any great differences between the pearlitic cast iron and ferritie cast iron in the amonnt of wear in the wet friction.
(2) The friction surface of ferritic cast iron becomes flatt more earlier than that of pearlitic cast iron. And then initial wear amount and time of pearlitic cast iron is little than that of pealitic cast iron.
(3) the fine finishing surface is required in order to diminish the wear, particularly where the beginning of friction.
