How can you determine if a grinding wheel is suitable for normal use?

To determine whether a grinding wheel is suitable for use, a comprehensive inspection must be conducted across three dimensions: visual inspection, acoustic testing, and information verification. Each step is essential. First, perform a visual inspection: carefully examine the wheel's surface to ensure no visible cracks, chips, deformation, or delamination. Check that edges show no chipping or missing corners, and verify that abrasive particles are evenly distributed without large-scale loss. Second, perform an acoustic test—a critical step for detecting hidden cracks. Gently suspend the grinding wheel and tap its side with a wooden or rubber mallet. A clear, resonant “clang” indicates an intact internal structure with no hidden damage. A dull, muffled sound, especially accompanied by abnormal noises, signals internal cracking. Such wheels must be immediately scrapped and never used. Finally, perform information verification. Examine the markings on the grinding wheel's surface to confirm its specifications and model match the equipment. Ensure the expiration date is clearly marked and not passed. Simultaneously verify details such as the manufacturer and applicable standards to avoid using counterfeit or uncertified products. Only after passing all three inspections may the grinding wheel be put into use.