Paper Titles
Interaction of Metal and Slag in Continuous Casting Mold
p.161
Mathematical Modeling of Heat Losses in Steelmaking Ladles
p.166
Study of Heat Dissipation Generated in Tool Designed for Friction Stir Welding Process (FSW)
p.171
Development of Aluminum Anodizing Process by the Power Supply Using Pulse Width Rectifying Method
p.176
Thermal Response of Activated Charcoal Modified Investment Casting Moulds
p.181
A Study on Different Welding Processes of IN718 for Elevated Temperature Application
p.186
A Study on Post Weld Heat Treatment of Friction Stir Welded Al2195 Blank for Spin Forming
p.190
Mechanical Properties of Shielded Metal Arc Welded Low Carbon Steel: Effect of Butt Joint Type and Uncapping of Excess Weldment
p.195
Effects of Salinity on Nanosilica Applications in Altering Limestone Rock Wettability for Enhanced Oil Recovery
p.200

Thermal Response of Activated Charcoal Modified Investment Casting Moulds

Article Preview

Abstract:

Direct microwave dewaxing of investment casting moulds is possible at the expense of time and poor heat distribution. Modifying the back-up stucco of investment casting moulds may enhance microwave absorption; however, it may affect its thermal properties. In this study, the effects of adding activated charcoal in the back-up stucco of the investment casting mould were investigated. Samples prepared without and with 25% activated charcoal were tested for differential scanning calorimetry (DSC) and Thermogravimetric analysis (TGA). It was observed that the specific heat capacity is higher in the samples added with activated charcoal. The DSC curves exhibit a smooth trend with no indication of exothermic or endothermic peaks in both samples. The glass transition temperature was also increased from 515.29°C to 582.24°C after modifying the contents. However, the TGA results show no significant difference in mass lost between the two samples that are about 2%. The DSC and TGA curves for both samples show similar patterns indicating that there is very close similarity in their thermal behaviour. Due to that, it can be concluded that the addition of activated charcoal in the back-up stucco does not induce an unusual reaction or thermal behaviour in the moulds.

You might also be interested in these eBooks
Materials, Industrial, and Manufacturing Engineering Research Advances 2 View Preview

Info:

Periodical:

Advanced Materials Research (Volume 1125)

Pages:

181-185

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1125.181

Citation:

Cite this paper

Online since:

October 2015

Authors:

Bashir Yahaya, E.M. Nazim, Mohd Hasbullah Idris, M.S. Dambatta, Mahmood Anwar, Sudin Izman*

Keywords:

Activated Charcoal, DSC, Investment Casting, TGA, Thermal Stability

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

References

[1] A. S. Sabau, Numerical simulation of the investment casting process, AFS Transaction, Paper 05-160(2005), 1-11.

Google Scholar

[2] information on http: /www. microfond. it. lost wax casting process. Access on 12 September, (2014).

Google Scholar

[3] O. Beniblage, D. B. Karunakar, A study on the blended wax pattern investment casting process, Proceeding of the World Congress on Engineering, 1(2011), 1-7.

Google Scholar

[4] S. Jones, C. Yuan, Advances in shell molding for investment casting, Journal of Materials Processing Technology, 135(2003a), 258-265.

Google Scholar

[5] A. Cooper, M. A. Nutley, A. Wadood, Differential scanning micro calorimetry, S. E. Harding and B. Z. Chowdhry (Eds. ), Protein-Ligands interactions: hydrodynamic and calorimetry, Oxford University Press, New York, 2000, 287-318.

Google Scholar

[6] R. Vaish, K. B. R. Varma, The glass transition and crystallization kinetic studies on BaNaB9O15 glasses, Materials Research Centre, Indian Institute of Science, Bangalore, India, (2009).

Google Scholar

[7] M. Szafran, P. Wisniewski, G. Rokicki, Effect of glass transition temperature of polymeric binders on properties of ceramic materials, Journal of Thermal Analysis and Calorimetry, 77(2004), 319-327.

DOI: 10.1023/b:jtan.0000033216.99303.33

Google Scholar

[8] R. Alvarez, F. Guerrero, A. J. Batista, J. A. Perez, J. C. M'Peko, J. Bisquert, Thermal behavior of the KSbMoO6 ionic conductive ceramic, Materials Science and Engineering B, 63(1999), 234-237.

DOI: 10.1016/s0921-5107(99)00085-9

Google Scholar

[9] O. Yaghobizadeh, H. Baharvandi, A. Alizadeh, Investigation of effect of acrylate gel maker parameters on properties of WC preforms for the production of WZrC composite, Int. Journal of Refractory Metals and Hard Materials, 45(2014), 130-136.

DOI: 10.1016/j.ijrmhm.2014.04.007

Google Scholar

[10] A. Pietrzak, H. Piekarski, Molar heat capacities for (isomer of butanediol + methanol) as a function of mixture composition and temperature, J. Chem. Thermodynamics, 79(2014), 171-177.

DOI: 10.1016/j.jct.2014.07.023

Google Scholar

[11] F. Li, T. R. Wei, F. Kang, J. F. Li, thermal stability and oxidation resistance of BiCuSeO based thermoelectric ceramics, Journal of Alloys and Compounds, 614(2014), 394-400.

DOI: 10.1016/j.jallcom.2014.06.117

Google Scholar

[12] B. Yahaya, S. Izman, M. H. Idris, M. S. Dambatta, Effects of activated charcoal on dewaxing time in microwave hybrid heating, Procedia CIRP, 26(2015), 467-472.

DOI: 10.1016/j.procir.2014.07.039

Google Scholar

[13] Information on, www. eng. uc. edu/~beaucag/classes/Analysis/Chapter3. pdf. Access on 21st October, (2014).

Google Scholar