The Principle Of Barium Silica Inoculant

The barium silicon inoculant is mainly composed of silicon powder, barium powder and other elements (such as calcium, aluminum, etc.) in a certain proportion, and then made into bulk metallurgical materials through the high-temperature furnace steelmaking process. Typical ingredient content is as follows:

1.硅(Si)：65%~72%

2.钡(Ba)：1%~6%

3. Calcium (Ca): lower content

4. Aluminum (Al): lower content

1. Promote graphitization:

Barium silica inoculant can strongly increase the graphitization core, promote the precipitation and refinement of graphite, and thus improve the morphology and distribution of graphite. In gray cast iron, the barium silicon inoculant can promote the formation of type A graphite and improve the strength of the cast iron.

2. Reduces the tendency to white-mouthed:

The carbon in white cast iron is mainly in the form of cementite (Fe₃C), which is hard and brittle, making it unsuitable as a structural material. Barium silica inoculants reduce cementite formation by promoting graphitization, which reduces whitening tendencies.

3. Refine the matrix organization:

Barium silicon-inoculant can also refine the matrix structure of cast iron, such as ferrite or pearlite, making the structure of cast iron more homogeneous, improving its mechanical properties and anti-recession ability.

4. Improve cutting performance:

By improving the microstructure of cast iron, barium silicon inoculants can also reduce the relative hardness of castings, thereby improving their machinability.

Barium silicon inoculant is widely used in metallurgy, machinery industry, especially as an additive in the casting process. It is mainly suitable for the preparation of gray cast iron and ductile iron, and can significantly improve the microstructure and properties of cast iron.

1. Granularity selection:

The particle size of the barium silicon inoculant should be selected according to the requirements of the casting process. For example, the particle size of 0.2~0.8mm is suitable for the incubation process, which can ensure that the inoculation amount is controlled more accurately.

2. Quantity control:

The amount of barium silica inoculant should be adjusted according to the material and process requirements of the cast iron to achieve the best inoculation effect.

3. Transportation & Storage:

Barium silica inoculant is a metallurgical material, which has certain requirements for transportation and storage conditions. Ensure that moisture, heat, and contamination are protected during transport and storage.

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