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10.10: Summary

Last updated

Nov 26, 2020
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- 10.9: Other Methods of Casting
- 10.11: Questions

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There are 4 main ways of casting metals; sand casting, die casting, continuous casting and investment casting. Each has advantages and disadvantages, and is suited for producing different components or using different materials.
The Biot number predicts how a casting will solidify, and is equal to

$\frac{h}{K / L}$
where: h = heat transfer coefficient
L = length of the casting
K = thermal conductivity

Commonly 3 zones form as the casting solidifies;

Chill zone – small crystals form on mould wall.
Columnar zone – larger grains growing in optimum crystallographic orientations.
Equiaxed zone – small grains that solidified early but detached and moved back into the liquid.

Going further

Books

Manufacturing with Materials by Lyndon Edwards, Mark Endean Butterworth-Heinemann Limited, ISBN 0750627549 (0-7506-2754-9)
Chapter 2 is an excellent coverage of casting

Websites

Continuous Casting
This site contains more information about continuous casting, and a very advanced simulation of the process.

Prof. H.K.D.H. Bhadeshia's teaching pages

Going further

Books

Websites

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