The effect of hydrochloric acid (HCl) on the structure and wear resistance of aluminum slag in the making of grinding stones.

A grinder is a tool used in manufacturing processes such as finishing workpieces and smoothing cuts or welding products, and it can also be used to sharpen metal tools such as knives and chisels with an abrasive material. In this study, the wear rate of a self-manufactured grinding stone made from aluminum slag treated with HCl as the abrasive material was compared to grinding stones from previous studies and commercial grinding stones sold on the market using the ASTM D-3702 standard wear test. The self-manufactured grinding stone was made of liquid and powder phenolic resins, cast aluminum slag, water and HCl-treated meshes 12 and 40, and fiberglass mesh fibers. The mixture is then combined with a predetermined composition. The mixture is then placed in a mold and compacted for 5 minutes with a press machine with a force of 15 tons, allowed to stand at room temperature for at least 24 hours, and sintered at 140 degrees Celsius for 1 hour. The results showed that the average wear value of the grinding stone with HCl treatment is higher than the wear value of the grinding stone with water treatment, which is 0.0664 gram/minute and 0.0129 gram/minute, respectively. The commercial grinding stone had the lowest average wear value of 0.0031 gram/minute. Surprisingly, the wear value of commercial grinding stones is lower than the wear rate of self-designed grinding stones. [ABSTRACT FROM AUTHOR]