Influence of sawdust on the properties of the ceramic shell used in investment casting process

  • Sarojrani Pattnaik


The quality of the investment casting (IC) ceramic shell was enhanced using sawdust as an inexpensive and naturally available additive in the ceramic slurries. The important shell properties such as thickness, porosity, permeability and flexural strength were determined. The ceramic shell accommodated a substantial amount of sawdust because of its low particle density and porous structure which resulted in higher green strength and thickness of the shell. The same shell upon firing led to increased shell porosity and permeability with good knockability characteristic. The addition of sawdust in the secondary layers did not affect the composition of the primary layer of the ceramic shell. The mechanical properties of the aluminium-silicon (Al-Si) alloy castings obtained from the sawdust-modified shells were found to be comparatively higher than those obtained from the conventional shells.


Ceramic Shell Casting Strength Porosity Permeability 


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  1. 1.
    Beeley PR, Smart RF (1995) Investment casting, first edn. The Institute of Materials, LondonGoogle Scholar
  2. 2.
    Pattnaik SR, Karunakar DB, Jha PK (2012) Developments in investment casting process—a review. J Mater Process Tech 212:2332–2348CrossRefGoogle Scholar
  3. 3.
    Kalpakjian S, Schmid S (2008). Manufacturing processes for engineering materials, fifth ed. Pearson Education IncorporationGoogle Scholar
  4. 4.
    Pattnaik SR, Karunakar DB, Jha PK (2014) (2014). Utility-fuzzy-Taguchi based hybrid approach in investment casting process. Int J Interact Des Manuf 8:77–89CrossRefGoogle Scholar
  5. 5.
    Pattnaik SR, Karunakar DB, Jha PK (2013) Parametric optimization of the investment casting process using utility concept and Taguchi method. P I Mech Eng L- J Mater Design Appl DOI. doi: 10.1177/1464420713487654
  6. 6.
    Pattnaik SR, Karunakar DB, Jha PK (2013) Modeling and parametric optimization of investment casting process by uniting desirability function approach and fuzzy logic. Journal of Intelligent and Fuzzy Systems - IOS Press. doi: 10.3233/IFS-130809
  7. 7.
    Pattnaik SR, Karunakar DB, Jha PK (2013) Multi-characteristic optimization of wax patterns in the investment casting process using grey–fuzzy logic. Int J Adv Manuf Technol 67:1577–1587CrossRefGoogle Scholar
  8. 8.
    Bonilla W, Masood SH, Iovenitti P (2001) An investigation of wax patterns for accuracy improvement in investment cast parts. Int J Adv Manuf Technol 18:348–356CrossRefGoogle Scholar
  9. 9.
    Wang D, He B, Liu S, Liu C, Fei L (2015) Dimensional shrinkage prediction based on displacement field in investment casting. Int J Adv Manuf Technol. doi: 10.1007/s00170-015-7836-1
  10. 10.
    Guerra M, Schiefelbein GW (1994) Review of shell components, shell characteristics and properties: refractory selection for primary shell coat. In: Proceedings of the Investment Casting Institute 42nd Annual Meeting, Atlanta, pp. 25–28Google Scholar
  11. 11.
    Ertuan Z, Fantao K, Yanfei C, Ruirun C, Yuyong C (2012) Characterization of zirconia-based slurries with different binders for titanium investment casting. Research & Development 9(2):125–130Google Scholar
  12. 12.
    Jafari H, Idris MH, Ourdjini A, Kadir MRA (2013) An investigation on interfacial reaction between in-situ melted AZ91D magnesium alloy and ceramic shell mold during investment casting process. Mater Chem Phys 138:672–681CrossRefGoogle Scholar
  13. 13.
    Liao D, Fan Z, Jiang W, Shen E, Liu D (2011) Study on the surface roughness of ceramic shells and castings in the ceramic shell casting process based on expandable pattern. J Mater Process Tech 211:1465–1470CrossRefGoogle Scholar
  14. 14.
    Moore JR, Maybaum S (1986) Processes for the application of refractory compositions to surfaces such as for the preparation of refractory shell molds and refractory compositions produced thereby. US Patent No. 4624898 AGoogle Scholar
  15. 15.
    Kline DM (2010) Controlling strength and permeability of silica investment casting molds. Missouri University of Science and Technology, ThesisGoogle Scholar
  16. 16.
    Shaw RD, Duffey DJ (2004) Investment casting, US Patent No. 6769475 B2Google Scholar
  17. 17.
    Doles RS, Viers DS (2009) Filler component for investment casting slurries. US Patent No. 7588633 B2 (September 15)Google Scholar
  18. 18.
    Yuan C, Compton D, Cheng X, Green N, Withey P (2012) The influence of polymer content and sintering temperature on yttria face-coat moulds for TiAl casting. J Eur Ceram Soc 32:4041–4049CrossRefGoogle Scholar
  19. 19.
    Yahaya B, Izman S, Idris MH, Dambatta MS (2016) Effect of activated charcoal on physical and mechanical properties of microwave dewaxes investment casting moulds. CIRP J Manuf Sci Tech 13:97–103CrossRefGoogle Scholar
  20. 20.
    Harun Z, Kamarudin NH, Ibrahim M, Idris MI, Ahmad S (2015) Reinforced green ceramic shell mould for investment casting process. Adv Mater Res 1087:415–419CrossRefGoogle Scholar
  21. 21.
    Youmoue M, Téné Fongang RT, Sofack JC, Kamseu E, Chinje Melo U, Tonle IK, Leonelli C, Rossignol S (2017) Design of ceramic filters using clay/sawdust composites: effect of pore network on the hydraulic permeability. Ceram Int 43(5):4496–4507CrossRefGoogle Scholar
  22. 22.
    Sales A, Rodrigues de Souza F, Almeid FDCR (2011) Mechanical properties of concrete produced with a composite of water treatment sludge and sawdust. Constr Build Mater 25:2793–2798CrossRefGoogle Scholar
  23. 23.
    Islam MN, Islam MS (2011) Mechanical properties of chemically treated sawdust-reinforced recycled polyethylene composites. Industrial Engg Chem Research 50:11124–11129CrossRefGoogle Scholar
  24. 24.
    Duan P, Yan C, Zhou W, Luo W (2016) Fresh properties, mechanical strength and microstructure of fly ash geopolymer paste reinforced with sawdust. Constr Build Mater 111:600–610CrossRefGoogle Scholar
  25. 25.
    Pattnaik SR, Karunakar DB, Jha PK (2012) Influence of injection process parameters on dimensional stability of wax patterns made by the lost wax process using Taguchi approach. P I Mech Eng L- J Mater Design Appl 227(1):52–60Google Scholar
  26. 26.
    Sidhu BS, Kumar P, Mishra BK (2008) Effect of slurry composition on plate weight in ceramic shell investment casting. J Mater Engg Performance 17:489–498CrossRefGoogle Scholar
  27. 27.
    Azzam A, Li W (2014) An experimental investigation on the three-point bending behavior of composite laminate. IOP Conf Series: Materials Science and Engineering 62 (2014) 012016 doi: 10.1088/1757-899X/62/1/012016.
  28. 28.
    Berger MB (2010). The importance and testing of density/porosity/permeability/pore size for refractories. In: Proceedings of the Southern African Institute of Mining and Metallurgy Refractories Conference, pp. 101–116Google Scholar
  29. 29.
    Amira S, Dube D, Tremblay R (2011) Method to determine hot permeability and strength of ceramic shell moulds. J Mater Process Tech 211:1336–1340CrossRefGoogle Scholar
  30. 30.
    Francois Batllo Viers DS, Mosher JS (2009) Method of improving the removal of investment casting shells. US Patent, US7503379 B2.Google Scholar
  31. 31.
    Pattnaik SR, Jha PK, Karunakar DB (2015) A novel method of increasing ceramic shell permeability and optimizing casting shrinkage and tensile strength of the investment cast parts. P I Mech Eng B- J Engineering Manufacture DOI. doi: 10.1177/0954405415606386
  32. 32.
    Kumar S, Kumar P, Shan H.S. (2008). Effect of process parameters on impact strength of Al-7% Si alloy castings produced by VAEPC process. Int J Adv Manuf Technol 38, 586–593, DOI:  10.1007/s00170-007-1197-3.
  33. 33.
    Wilding MA (1995) Introduction: the structure of fibres. Chapter, Chemistry of the textiles industry, Page 6, DOI:  10.1007/978-94-011-0595-8_1, Springer Netherlands
  34. 34.
    Batllo Francois (2003) Method of improving the removal of investment casting shells. US Patent, WO2004062835 A2Google Scholar
  35. 35.
    Lilholt H, Lawther JM (2000). Natural organic fibers. Chapter 1.10, Comprehensive composite materials, Elsevier Publisher 1: (ISBN: 0–080437192); 303–325.Google Scholar

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© Springer-Verlag London 2017

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentVeer Surendra Sai University of TechnologyBurlaIndia

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