Cast iron can be defined as the alloy of iron which consist 2-4% carbon, along with a varying volume of silicon (Si) along with manganese (Mn) and some parts of the impurities which includes the sulfur (S) and phosphorus (P). It is very important and useful material derived from its varying low temperature of melting. The formation of the cast iron starts when the raw materials combine with each other. It is very hard to find the iron in the purest state.
The term cast iron is mainly implied to explain the grey cast iron, but it is also used to elaborate a complete set of alloys as well. The Cast iron is generally brittle other than the malleable cast irons. They have a very less melting point as well as wear resistance. Cast iron has become an engineering material with a huge array of applications.
Types of cast iron
Cast iron properties are changed by many alloying elements. Its main alloys are carbon and silicon. Nickel is also used because it improves its toughness.
- Grey Cast Iron
- White Cast Iron
- Malleable Cast Iron
- Ductile Cast Iron
What is the casting process?
The process of casting contains pouring of iron in an old thus giving its shape and desired size. Contaminants are removed from the melted pig iron and after melting the iron than in the final step it is cast. Pouring can be done by low-pressure vacuum.
After casting is done, it can be solidified. If it is not performed in the right way, this method can hamper the complete efforts and then the metal is re-used as scrap metal and passed through the recycling process to prepare a pig metal preparing for the casting foundries India. Cooling process control is also very important. Quick cooling brings refined manufacturing and on the contrary, the process of slow cooling brings the coarse grain construction. Cast iron which has not been cooled uniformly produces a low-quality cast.
Major Applications
- Building construction
- Aqueduct construction
- Big bridge construction
- Artillery
- Textiles mills
- Industrial machines
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