What is advantage and disadvantage of ductile cast iron(SG IRON) liner compare to Gray cast iron liner ?
* The Cylinder Liner is made from Grey Cast Iron of FG 200 to FG 250 grade. Inside surface of the bore is honed to required pattern and size. The Cylinder Block is made of Grey Cast iron of FG 200 / FG 250 grade, casted by shell moulding process. *Properties of principal interest to the designer and user of castings are: resistance to wear; hardness; strength; and, in many cases, modulus of elasticity. Some of the relationships between these properties are quite different for gray iron as compared with steel. The variable relation between hardness and tensile strength in gray iron appears to confuse the engineer when most of his experience may have been with other metals. The excellent performance of gray iron in applications involving sliding surfaces, such as machine tool ways, cylinder bores, and piston rings, is well known. The performance in internal combustion engines and machine tools is remarkable when one considers the ease of machining gray iron. Gray iron is also known for i
