Calcium Silicon Metal / Silicon-Calcium Alloy

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Description 

The amount of inoculant used in the inoculation treatment of cast iron has little effect on the chemical composition of cast iron, but great effect on its microstructure, so it can improve the mechanical properties of gray cast iron, and also has obvious effect on its physical properties.

Good inoculation has the following effects:

Eliminate or reduce the tendency of white mouth;

To avoid the occurrence of supercooled tissue;

Reduce the sensitivity of the wall thickness of cast iron, so that the difference of the microstructure of the thin and thick section of the casting is small, and the hardness difference is small.

It is beneficial to nucleation of eutectic group and increase the number of eutectic group.

Specification

The reasons for the good oxidation resistance of Si-Ca alloy are as follows:
Calcium is one of the main elements in silicon calcium alloy, which can combine with oxides to form stable compounds, thus reducing the occurrence of oxidation reactions.
Silicon is the other main element in the silicon calcium alloy, it can form a dense silicon oxide film, effectively prevent the oxidation reaction.
Silica-calcium alloy has compact structure, fine grain, high surface finish and good oxidation resistance.
The production process of silicon calcium alloy is relatively strict, and the oxidation reaction can be controlled during the manufacturing process, so as to ensure the oxidation resistance of the alloy.

Application

1. Si and Ca can be controlled absolutely.

2. Less impurities such as C, S, P, Al.

3. Pulverization and deliquescence resistance.

4. Calcium have a strong affinity with oxygen, Sulfur ,Nitrogen. 

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