Automatic demagnetization machine for large workpieces into conveyor band and demagnetization demagnetization machine after machine is the workpiece after machining or magnetic particle inspection of workpiece remanent magnetization demagnetization equipment, the demagnetization equipment used away from the law. Ideal for demagnetization demands higher bulk larger users of the workpiece, the device is simple, use a wide, high efficiency, safe and reliable. Suitable for all kinds of metal materials (non-magnetic) bulk demagnetization, magnetic metallic material lose magnetism. High efficiency, demagnetization effect, small residual magnetism and so on, are widely used in machinery, bearings, hardware products, mold manufacturing, and other industries.