IJIRST (International Journal for Innovative Research in Science & Technology)ISSN (online) : 2349-6010

 International Journal for Innovative Research in Science & Technology

Optimization of Process Parameters of Wax Pattern in the Investment Casting Process by using Different Form of Waxes


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International Journal for Innovative Research in Science & Technology
Volume 3 Issue - 8
Year of Publication : 2016
Authors : Er. Keshav Kamboj

BibTeX:

@article{IJIRSTV3I8017,
     title={Optimization of Process Parameters of Wax Pattern in the Investment Casting Process by using Different Form of Waxes },
     author={Er. Keshav Kamboj},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={3},
     number={8},
     pages={10--14},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV3I8017.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}



Abstract:

Investment casting is one of the oldest manufacturing processes, dating back thousands of years, in which molten metal is poured into an expendable ceramic mold. The mold is formed by using a wax pattern - a disposable piece in the shape of the desired part. The pattern is surrounded, or "invested", into ceramic slurry that hardens into the mold. Investment casting is often referred to as "lost-wax casting" because the wax pattern is melted out of the mold after it has been formed. Investment casting requires the use of a metal die, wax, ceramic slurry, furnace, molten metal, and any machines needed for sand-blasting, cutting, or grinding. In the present study, an attempt has been made to produce a wax blend which could offer minimum linear and volumetric shrinkage and better surface finish. Experiments were conducted with different types of waxes namely Paraffin wax, Bees wax, Carnabua wax and Microcrystalline wax by varying their proportions. In each case, properties of wax pattern like surface finish, percentage linear and volumetric shrinkage were determined. An attempt was made to find out the set of input parameters, which could offer a set of ideal properties ofthe wax blend, using Taguchi method. The set of input parameters suggested by Taguchi method was experimentally verified and found to offer the set of desired optimal properties of the wax blend pattern.


Keywords:

Investment Casting, Linear Shrinkage, Surface Finish, Taguchi Method, Volumetric Shrinkage, Wax Blend


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