Improvement of Bending Strength of Resin Coated Sand

Jakkapan Jariyajirawatana; Napassavong Osothsilp

doi:10.4028/www.scientific.net/KEM.765.249

Paper Titles

Evaluation for Chaos in EDM Generated Surface Topography
p.227

Relationship between Compressive Residual Stress Relaxation and Microhardness Reduction after Cyclic Loads on Shotpeened ASTM A516 Grade 70 Steel
p.232

Calculation Method of Curvature Radius and Bending Deformation of Titanium Alloy under Multiple Laser Shocks
p.237

3-D FEM Simulation of Laser Peening Straightening for Shaft Straightness
p.243

Improvement of Bending Strength of Resin Coated Sand
p.249

Effects of Resin Coated Sand Mixture on Bending Strength and Cost
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Design of Alternating Current Abrasive Magnetic Fluid Jet Generator Based on Permanent Magnet
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Strength and Microstructural Properties of Mortar Containing Soluble Silica from Sugarcane Bagasse Ash
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Degree of Reaction and Alkali-Leaching of Geopolymer Containing Ca-Rich Source Material and Dipotassium Hydrogen Phosphate
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 765Improvement of Bending Strength of Resin Coated...

Improvement of Bending Strength of Resin Coated Sand

Abstract:

This research proposed a method to improve bending strength of RCS used in hollow core production by finding the optimal levels of factors in the mixing process. Process factors under study were temperature of sand, time to release phenolic resin, time to release hexamine solution, time to start air blowing, air blowing time duration, and time to release calcium stearate. Experiments with Central Composite Face-centered (CCF) design were performed to save the number of experimental runs. Then, backward elimination regression analysis was performed to find out the relationship equation of bending strength and significant process factors. Next, the optimization technique was applied to determine the optimal setting of those significant process factors. The comfirmatory result showed that bending strength was significantly improved.

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Periodical:

Key Engineering Materials (Volume 765)

Pages:

249-254

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.765.249

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Online since:

March 2018

Authors:

Jakkapan Jariyajirawatana*, Napassavong Osothsilp

Keywords:

Bending Strength, Mixing Process, Resin Coated Sand, Response Surface Methodology

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