Reinforced green ceramic shell mould for investment casting process
Basically in the investment casting process development of thin ceramic shell mould is very crucial as this mould inherent brittle property and highly exposed to the cracking mechanism. The slurry composition produces green(unfired) ceramic shell mould which low in strength and easily crack or fail...
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| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/5900/ http://eprints.uthm.edu.my/5900/4/Reinforced_Green_Ceramic_Shell_Mould_x.pdf |
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| Summary: | Basically in the investment casting process development of thin ceramic shell mould is very crucial as this mould inherent brittle property and highly exposed to the cracking
mechanism. The slurry composition produces green(unfired) ceramic shell mould which low in strength and easily crack or fail during wax removal or handling processing. By strengthening of this brittle ceramic shell mould via
reinforcement technique can enhance the strength of green shell mould body. In this work, the presence of the treated rice husk fibre toughened the green shell mould by creating mechanical interlocking bonding in shell matrix which contributes to higher modulus rupture value. In fact, through SEM observations showed that the addition of fibers to the ceramic body to form a composite shell mould prevent the crack propagation mechanism due to the existence of the matrix-fibre bridging which create the resistance of fiber to pull-out. This directly will increase the strength of
green shell mould body. |
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