Reconstructing a Five Mould Semi-Centrifugal Casting Machine for the Local Foundry Industry in Ghana
Keywords:Casting, Centrifugal Casting, Foundry, Gravity, Investment Casting, Machine.
AbstractMost cast objects produced by the Ghanaian local foundries are of low quality, and it is because they utilize the wrong method of casting (mould feeding). The local foundries were looked into to find out the casting techniques they employed, and centrifugal casting machines were investigated to be able to come up with a design that best suited the operations of the local foundries to improve their work- and a miniature of it was fabricated. Qualitative research design (descriptive, studio based, and experimental) was used to collect data from a sample size of 70 foundry men from an accessible population of 180 professional foundry men. It was found that the local foundries limit themselves to sand casting and cuttlefish bone casting, but most foundry workers are willing to learn and apply any new technique to improve their productivity. Also, gravitational mould feeding mostly produces casts with poor surface quality, and because mass production is done manually and hurriedly, the foundries end up discarding and reproducing most casts. It is recommended that the local foundries should employ centrifugal casting techniques as practiced in this research to improve their production and services. Also, centrifugal casting, which uses centrifugal force is an ideal way of mould feeding in the foundries and must be utilized in the foundries to improve product quality, and multiple mould-feeding centrifugal casting machines as fabricated in this study should be employed by the local foundries to improve the effectiveness of their mass productions. It is also recommended that the local foundries must form a more organized and structured association with delegated tasks and functions in order to get the attention of the government for aid, should the need be.
Allen D. (1979). Non-ferrous metals melting practice and their metallurgy theory. American Technical Society Journal Vol. 32 pp 69 – 72.
Akoma-trade Ghana Import & export product showcase, (n.d.). Retrieved from http://www.akoma-trade.com/index.php
Andrews, A., Gikunoo E., (2011) "Small Scale Foundries in Ghana: The Challenges" (Undergraduate Thesis, Kwame Nkrumah University of Science and Technology). Retrieved from http://lejpt.academicdirect.org.
Beck, B., Roger (1999). World history: Patterns of interaction. Evanston, Illinois: McDougal Littell.
Freeth, T., Bitsakis Y., Moussas, X., Seiradakis, J. (2006). "Decoding the ancient Greek astronomical calculator known as the antikythera mechanism [PDF]. Retrieved 26th November, 2016.
Joshi, M.A., (2015) Centrifugal Casting (Undergraduate Thesis, Indian Institute of Technology). Retrieved from http://www.metalwebnews.com/howto/casting/casting.pdf
Metal Casting. Rai Technology University. Retrieved 20th January, 2017.
Paz, E.B., Ceccarelli, M., Otero, J.E. (2010) A brief illustrated history of machine and mechanisms. Springer Dordrecht Heidelberg London New York
Petrie W.M.F., (1883). The pyramids and temples of Gizeh." London. Ye Leadenhalle Presse.
Romanoff, P. (1981). Art and science of centrifugal casting plastics. New York, TAB Books.
Turkeli, A. (2016) "History of Metal Casting" (PDF). Retrieved 26th November, 2016 from http://www.metalwebnews.com/howto/casting/casting.pdf
Wei, S. (2008). Casting. Handbook Volume 15, pp 667-673.
Web link: https://en.wikipedia.org/wiki/Centrifuge_casting.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).