Classification of cast iron and cast iron

by:XEX     2020-11-04
There is flake graphite of ordinary cast iron, the strength of the graphite is very low, is equivalent to cast iron sheet, the gap in the produce stress concentration, so the strength of ordinary cast iron is lower, brittle. Graphite in ductile cast iron is spherical, is equivalent to cast iron ball in the gap, the influence of the strength of cast iron ball gap is far smaller than plate gap, and good toughness. According to different state of carbon in cast iron cast iron can be divided into: (1) grey cast iron, (2) white cast iron (3) malleable iron (4) nodular cast iron (5 6 vermicular cast iron alloy cast iron. In these six kinds of cast iron vermicular cast iron is the best performance, but the price is also the most expensive, worst performance of white cast iron, ductile cast iron is close to the performance of medium carbon steel, but much cheaper than the price of medium carbon steel, has been widely applied in life. What is a cast iron? The carbon content in more than 2% of the iron carbon alloy. Carbon in cast iron by graphite morphology. Tensile strength, plasticity and toughness of cast iron is better than steel, its mechanical performance is worse than steel, ordinary cast iron forging. But it has excellent castability, shock resistance, wear resistance and cutting processability characteristics, combined with low cost, simple production equipment and technology, widely used in machinery manufacturing.
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