Surface roughness study on ASTM36 iron with combination of sand blasting process parameters

Sandblasting is one of the techniques used to clean the iron surface from dirt, dust, or rust. Several factors need to be considered when using sandblasting on the surface of ASTM-36 iron, such as the distance, pressure, and type of sand used. The distance variation used in this study consisted of 100 mm, 150 mm, and 200 mm. The pressures used in this study consisted of 4.5 bar, 5 bar, and 5.5 bar. At the same time, the type of sand used in this study consists of Setokok sand, Nongsa sand, and Bahagia sand. There were nine samples tested in this study using a combination of variations. The investigation was done before and after the sandblasting process for all samples using a Surface Roughness Tester based on ISSO: 1997 and image analysis. The results showed that all samples experienced an increase in surface roughness after the sandblasting process. However, E sample showed the highest increase in surface roughness (pressure: 5 bars, distance: 150 mm, and sand type: Bahagia sand).