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Development of Plaster Mold Casting

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Bibliographic Details
Main Author: Mohd Nor Iskandar Shah, A. Hamid
Other Authors: Wan Abd. Rahman As-Syahid Wan Ibrahim
Format: Learning Object
Language:English
Published: Universiti Malaysia Perlis 2012
Subjects:
Plaster mold
Mold halves
Plaster mold casting
Rubber plaster molding (RPM)
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/22600
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spelling my.unimap-226002012-12-20T02:13:57Z Development of Plaster Mold Casting Mohd Nor Iskandar Shah, A. Hamid Wan Abd. Rahman As-Syahid Wan Ibrahim Plaster mold Mold halves Plaster mold casting Rubber plaster molding (RPM) Access is limited to UniMAP community. Plaster Mold Casting has been used to produce a high quality of product with a good surface finish. To get the final products, a plaster mold is fabricated by pouring liquid metal into plaster (mixed of gypsum, talc, asbestos and sodium silicate) molds. This plaster in a form of slurry is sprayed on the polished surfaces of the pattern halves (usually brass). The slurry sets in less than 15 minutes to form the mold. The mold halves are extracted carefully from the pattern, and then dried in an oven to remove the moisture that can affect the final product. The mold halves are carefully assembled, along with the cores. The molten metal is poured in the molds. After the metals cools down, the plaster is broken and the cores washed out. Parts cast are usually small to medium size, ranging in weight from 30 g (1 oz) to 7 kg (15 lb). The section thickness can be as small as 0.6 mm (0.025 in) and tolerances are 0.2 % linear. The draft allowance is 0.5-1.0 degree. The surface finish is 1.25 µm to 3 µm (50 µin to 125 µin) rms. Low temperature melting materials such as aluminum, copper, magnesium and zinc can be cast using this process. This project involves design the products that suit to be produced through Plaster Mold Casting process. Next stage is to fabricate and prepare the plaster mold using appropriate technique. 2012-12-20T02:13:57Z 2012-12-20T02:13:57Z 2009-05 Learning Object http://hdl.handle.net/123456789/22600 en Universiti Malaysia Perlis School of Manufacturing Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Plaster mold
Mold halves
Plaster mold casting
Rubber plaster molding (RPM)
spellingShingle Plaster mold
Mold halves
Plaster mold casting
Rubber plaster molding (RPM)
Mohd Nor Iskandar Shah, A. Hamid
Development of Plaster Mold Casting
description Access is limited to UniMAP community.
author2 Wan Abd. Rahman As-Syahid Wan Ibrahim
author_facet Wan Abd. Rahman As-Syahid Wan Ibrahim
Mohd Nor Iskandar Shah, A. Hamid
format Learning Object
author Mohd Nor Iskandar Shah, A. Hamid
author_sort Mohd Nor Iskandar Shah, A. Hamid
title Development of Plaster Mold Casting
title_short Development of Plaster Mold Casting
title_full Development of Plaster Mold Casting
title_fullStr Development of Plaster Mold Casting
title_full_unstemmed Development of Plaster Mold Casting
title_sort development of plaster mold casting
publisher Universiti Malaysia Perlis
publishDate 2012
url http://dspace.unimap.edu.my/xmlui/handle/123456789/22600
_version_ 1643790521707003904
score 13.222552

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