Small Scale Foundries For Developing Countries

doi:10.3362/9781780444307

Small Scale Foundries For Developing Countries

A guide to process selection

This book aims to assist anyone about to start or to expand a small scale foundry to consider the various available processes, and to select the most appropriate for the circumstances. Technical aspects covered include pattern-making, moulding, coremaking, melting cast iron, steel castings, non-ferrous metal castings, cleaning castings, safety, planning and sources of foundry equipment and materials.

Published: 1981
Pages: 72

eBook: 9781780444307

Paperback: 9780903031783


Introduction 1
The role of the foundry
Object of this book
Foundry processes
Chapter 2 Pattern-making 3
Existing castings as patterns
Pattern design
Pattern materials
Pattern-making equipment
Pattern storage
Chapter 3 Moulding 7
Choice of moulding method
Running and feeding
Moulding boxes
Permanent moulding
Centrifugal casting
Clay-bonded sand moulds
Clay and moisture
Sand preparation
Types of sand
Hand moulding
Machine moulding
Mould drying
The CO2 process
Air set moulding
Other moulding processes
Mould assembly and pouring
Chapter 4 Coremaking 28
Core binders
Core making
Core assembly moulding
Chapter 5 Melting cast iron 32
Technical requirements
Raw materials
Cupola furnaces
Gas and oil furnaces
Electric melting
Refractory linings
Capacity of melting furnaces
Steel castings 41
Non-ferrous metal castings 42
Raw materials
Melting furnaces
Melting aluminium
Melting bronze
Pouring
Moulding and coremaking
Cleaning castings
Inspection
Safety
Foundry planning
Specification
Site and buildings
Layout
Sources of foundry
equipment and materials
Purpose built equipment
Locally made equipment
Imported raw materials
Local raw materials
Skills and training
Bibliography and References
Conversion factors
Glossary
Appendix: Assistance questionnaire