The production of modern coal mine is highly dependent on various mechanical equipment,so it is very important to ensure the safe operation of mechanical equipment,and it is necessary to detect various defects in mechanical equipment of coal mines.Nondestructive testing technology uses physical method to detect the internal defects of equipment efficiently,and has been widely used in the defect detection of mechanical equipment in coal mines.By analyzing some common nondestructive testing technology,such as ultrasonic detection,liquid penetration detection,magnetic particle detection and acoustic emission detection,the application of these techniques in defect detection of mechanical equipment in coal mines was discussed.It can provide some reference for the operation and maintenance of coal mine equipment.
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