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Powder Topics

4.3 Melting rate controll

It can be seen that the melting rate of powder changes depending on the specific heat, latent heat, and thermal conductivity of the powder. In addition to these physical property values, in the powder for continuous casting, the melting rate is adjusted by adding carbon powder. The higher the amount of carbon powder added, the slower the melting rate. In addition, the smaller the particle size of the carbon powder, the greater the effect of suppressing the melting rate. Carbon powder also has an anti-sintering effect and a heat source, so while making a compromise with those conditions, Adjust the type and amount of carbon powder.
In addition, the melting rate changes depending on the components that generate gas and the bulk density. For example, when carbonate is added, the melting rate is increased by stirring with the decomposition gas. Also, the higher the bulk density, the slower the melting rate.

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