Use cases ·

Importance of lamellar graphite cast iron in the industry

Lamellar graphite cast iron is characterized by easy heat dissipation, so it is commonly used to create blow molds, cooling cavities, baffles, blow heads, plungers, neck rings and many other supplies.

Importance of lamellar graphite cast iron in the industry

Graphite is a mineral that, due to its unique characteristics, has the ability to enrich any type of part. In this article, we want to talk about how the alloy of cast iron with lamellar graphite is an excellent option for the creation of parts and products that are indispensable in different industries or trades.

Lamellar graphite cast iron is characterized by dissipating heat easily, so it is commonly used to create blow molds, cooling cavities, baffles, blow heads, plungers, neck rings and many other supplies.

But, cast iron with lamellar graphite is just one of several alloys that can be made with graphite to enhance the properties of other materials.

In carbon steel foundries there are steel alloys that create lamellar structures of graphite or pure carbon. In these processes, aphite is added in pellet formo raise the carbon content of a steel production, in doing so creating carbon steel ferroalloys, which vary in carbon content from 0 to 2% up to 5%.

aphite is used to raise the carbon content in foundries a in steel production crystallizations are formed.

Classification of cast irons

In this sense, undries can be classified into five groups dending on their characteristics and properties: alloy, spheroidal, gray, white and malleable. In this specific article we will talk about cast iron with lamellar graphite, better known as ay cast iron iwhich carbon is generally found as graphite and is broken into flakes or sheets.

To obtain this type of casting, which accounts for more than 90% of all castings, 2 to 3% silicon (or aphitizing elements sh as phosphorus, aluminum, nickel or copper) is required, as well as a very slow cooling rate, which is easier for large or bulky parts.

This type of casting is mainly used in parts that need to have a high resistance to corrosion or weathering such as manhole covers, gratings, housings, blocks, etc. It also works perfectly when it comes to friction or vibration.

The mellar graphite c be presented in different forms that give the metal alloy certain particular characteristics. It can be in the form of long sheets and the result will have better mechanical characteristics or in the form of rosettes, thanks to a faster solidification but the mechanical resistance will be lower.

On the other hand, if the sheets are very large, indicating hypereutectic castings, the result will be resistant to thermal shock but weak in tensile strength.

Graphite can also be spheroidal when there are elements that allow its radial crystallization, such as magnesium and cerium. This results in high mechanical strength and ductility, which is why it is mainly used in the automotive industry.

What are its main characteristics?

  • Due to the fact that graphite is a self-lubricating material, the result of this type of castings presents good wear resistance, however, low tensile strength and ductility.
  • It is competitively priced and easy to machine.
  • It can perfectly damp vibrations.
  • Its ability to deform is low.
  • The silicon that allows graphitization gives it good resistance to corrosion and makes the casting (cast iron) more fluid.
  • Cast iron is generally easy to weld.

In ESGRAF we are allied to facilitate the work in the industry offering the base to develop alloys such as cast iron with lamellar graphite. Request information in this link or check our page to know the best applications of graphite in the industry.