Evaluation of Foundry Properties of Locally Available Molding Sand with Bentonite Clay Additions for Cost-Effective Aluminum Alloy Casting

Le résumé fourni par la source

This study addresses an existing gap by examining the foundry properties of Ravi River sands, a subject that has not been explored in earlier studies. Several mechanical and physical tests were used to assess the foundry qualities of sands from different areas. These local sands were used to make molds for Al alloy castings, and the parts' surface roughness (Ra) was assessed. The findings showed that the grain size of the sand varied by location, with the highest grain fineness number (GFN) being 106 and the lowest being 71. All samples exhibited a pH > 7, confirming their suitability for strong binder adhesion. The sand from Syed Wala Bridge had the highest grain fineness number (~106), whereas the sand from Sheraza Pattan Bridge had the lowest (~71). All sand samples showed a constant increase in mold strength when the binder (bentonite clay) percentage was raised from 5% to 25%. The study demonstrates the potential of Ravi River sands to eliminate reliance on imported materials and reduce costs.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.