Transactions of the Indian Institute of Metals

, Volume 71, Issue 7, pp 1735–1745 | Cite as

Effect of Mould Coatings and Pouring Temperature on the Fluidity of Different Thin Cross-Sections of A206 Alloy by Sand Casting

  • Srinivasa Rao Pulivarti
  • Anil Kumar Birru
Technical Paper


Thin-wall castings of the A206 alloy can pose a manufacturing problem associated with mould filling which results in fluidity defect. The mould coating generates a smooth surface, and reduces the friction between the melt and mould contact, thus reducing the heat-transfer coefficient, which in turn leads to enhancement of fluidity and mechanical properties. The fluidity of A206 alloy was observed in various cross-sections of the thin channels at three altered pouring temperatures i.e. 700, 750 and 780 °C for uncoated and coated green sand moulds. The Graphite and Soapstone powder coatings were used as sand mould coatings in the present investigation. It was found that the fluidity of aforesaid alloy was significantly increased with the Soapstone powder mould coating at pouring temperature of 750 °C. The characterization of the coating materials was performed by the X-ray diffraction analysis and scanning electron microscope test with EDAX.


Sand casting A206 alloy Fluidity Pouring temperature Mould coatings Thin-wall castings 



Authors are glad to acknowledge the National Institute of Technology, Manipur for Financial Support to carry out the Experimental Research work of Mr. Srinivasa Rao Pulivarti, Full-time Research Scholar (Enrolment No: 15PME002) under the guidance of Dr. Anil Kumar Birru, Assistant professor and Head, in Mechanical Engineering Department-India-795004.


  1. 1.
    Sabatino M D, and Arnberg L, Metall Sci Technol 22 (2004), 9.Google Scholar
  2. 2.
    Ravi K R, Pillai R M, Amaranathan K R, Pai B C, and Chakraborty M, J Alloys Compd 456 (2008) 201–210.CrossRefGoogle Scholar
  3. 3.
    Colak M, Kayikci R, and Dispinar D, Trans Indian Inst Met (2014) 1.Google Scholar
  4. 4.
    Di Sabatino M, and Arnberg L, Trans Indian Inst Met 62 (2009), 321.CrossRefGoogle Scholar
  5. 5.
    Beeley P R, Foundry Technology, Butterworth Scientific (1972).Google Scholar
  6. 6.
    Sheshradri M R, and Ramachandran A, AFS Trans 73 (1965) 292.Google Scholar
  7. 7.
    Fleming M C, Conradn H F, and Taylor H F, AFS Trans Trans Indian Inst Met (1959) 496.Google Scholar
  8. 8.
    Kim J M, and Loper C R, AFS Trans (1985) 521.Google Scholar
  9. 9.
    Niyama E, Anzai K, Funakubo T, and Hiratsuka S, J Mater Process Technol 63 (1997) 779.CrossRefGoogle Scholar
  10. 10.
    Birru A K, Benny Karunakar D, and Mahapatra M M, Int J Mech Aerosp Ind Mechatron Manuf Eng 6 (2012), 128.Google Scholar
  11. 11.
    Birru A K, Benny Karunakar D, and Mahapatra MM, Trans Indian Inst Met 65 (2012) 97.CrossRefGoogle Scholar
  12. 12.
    Birru A K, Mahapatra M M, Karunakar D B, and Kumar P, 57 (2011), 38.Google Scholar
  13. 13.
    Perng Y-S, Wang I-C, Yang W-C, and Lai M-H, Taiwan J For Sci 23 (2008) 1.Google Scholar
  14. 14.
    Nwaogu U C, and Tiedje N S, Mater Sci Appl 2 (2011) 1143.CrossRefGoogle Scholar
  15. 15.
    Borouni M, Niroumand B, and Fathi M H, Mater Technol 48 (2014) 4, 473.Google Scholar
  16. 16.
    Pursall F W, and Straus K, Coatings for Moulds and Cores, (ed) Applied Science in the Casting of Metals, Pergamon Press, Oxford (1970).Google Scholar
  17. 17.
    Jang K W, Kwon W S, Yim M J, and Paik K, Microelectron Packag Soc 10 (2003), 1.Google Scholar
  18. 18.
    Jain P L, Principle of Foundry Technology, (ed) McGraw-Hill, New Delhi (2006).Google Scholar
  19. 19.
    Feng L, and Gencang Y, 290 (2001) 105.Google Scholar
  20. 20.
    Laurent V, Chatain D, and Eustathopoulos N, Mater Sci Eng A 135 (1991) 89.CrossRefGoogle Scholar
  21. 21.
    Prasad P N, Nanophotonics, John Wiley & Sons Inc. (2004).Google Scholar
  22. 22.
    Flemings M, Solidification Processing, McGraw-Hill, New York, USA (1974), p 73.Google Scholar
  23. 23.
    Bell J C, AFS Trans 56 (1948) 365.Google Scholar
  24. 24.
    Gencalp S, and Saklakoglu N, Arab J Sci Eng 37 (2012) 2255.CrossRefGoogle Scholar
  25. 25.
    Hu X, and Ai F, Acta Metall Sin (Engl Lett) 25 (2012) 272.Google Scholar
  26. 26.
    Qudong W, Yizhen L, Xiaoqin Z, Wenjiang D, Yanping Z, Qinghua L, and Jie L, Mater Sci Eng A 271 (1999) 109.CrossRefGoogle Scholar
  27. 27.
    Chandrashekar T, Muralidhara M K, Kashyap K T, and Rao P R, Int J Adv Manuf Technol 40 (2009) 234.CrossRefGoogle Scholar
  28. 28.
    Eisuke N, and Masayuki I, Fluidity of Metals in Extremely Thin Sections, (ed) Lakeland K D, Mckeown J, and Glennie P, Proceedings of 4th Asian Foundry Congress, Australian Foundry Institute, Australia (1996).Google Scholar

Copyright information

© The Indian Institute of Metals - IIM 2018

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentNational Institute of TechnologyManipurIndia

Personalised recommendations