Experiment 3 Metallographic Observations
The edges of cylindrical metal specimens must first be beveled off to avoid damaging the polishing cloths. For Mg and Al and their alloys, use the aluminum polishing wheels. Stage Abrasive Lubricant Cloth Rough Grinding Silicon Carbide Tap Water Fine Grinding Grit 240 Grit 320 Grit 400 Grit 600