All You Need To Know About Foundry-Grade Pig Iron

 

The production of pig iron is quite known to everyone. After the iron ore gets smelted in the blast furnace, along with coke and charcoal as reductant, pig iron is produced. But, there are different grades of this pig iron. Each of these grades specializes in different fields.

While the basic grade pig iron is used for making electric arc furnaces, the steel grade is used for steel making, and finally, the foundry grade is used for manufacturing grey iron castings in cupola furnaces. 

Composition of foundry-grade pig iron

The typical iron content in foundry-grade pig iron is more than 92%. Besides this, it also consists of a number of other elements like sulphur, phosphorus, carbon, and silicon.  There are also impurities present in the composition of this grade of pig iron so that the final product can be without any lumps or grains.

      ·         Carbon Content: The pig iron manufacturers use 2.8%-4.2% of carbon in this grade of pig iron. With this amount of carbon content, the material's ability to flow and fill up the molds becomes easy, during the casting process.

     ·         Silicon Content: It improves fluidity while reducing the formation of undesirable compounds during the process. The silicon content in this grade is 1% to 4%.

Manufacturing and casting of foundry grade by pig iron manufacturers

The casting properties of this grade of pig iron allow it to be used for different casting properties. Fortunately, the carbon and silicon content allows it to process easily. Besides this, it also has solidification characteristics that allow the casting to occur smoothly without any defects.

Different organizations measure the quality standards for this grade of pig iron. Several parameters check the chemical composition, physical properties, and other casting performance of the foundry-grade pig iron. Besides this, there are also different applications of this grade. Let's take a look at them.

     1.      Raw Materials: The pig iron manufacturers use pig iron in the foundries as raw materials. This helps in the production of castings.

     2.      Casting applications: These are also used in the engine blocks, cast components, and cylinder heads.

     3.      Industrial sectors: Apart from the above applications, these are used in architectural castings, valves, pumps, and other machinery.

Before choosing any grade of pig iron, one must understand every minor detail and check whether the grade is appropriate for the chosen application. This way, they can durability of the product can be expanded.

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