抄録
(1) Remarks for the practical engineers, monufacturing Piston Rings for the internal combustion engine
(2) Control the elements which has the influences on the properties. such as, Carbonboth graphitic carbon and Combined Carbon-, phosphorus and Manganese etc,
(3) After the long services the Causes of the destruction which chiefly influenced by the decompositions of the free cementite, the pearlitic matrix and the growth of the graphitic carbon etc.
(4) Indicate the future tendencies for the manufacturing of Piston Rings being such as "Semi-Steel" or" Pearlitic cast iron"or else "Special cast iron" or" Sorbitic Cast iron."
