The Q38 series overhead rail shot blasting machine is suitable for cleaning cast steel, cast iron, and metal structural parts used in small mining machinery. It mainly employs high-efficiency, high-power shot blasters to project high-speed streams of abrasive shots onto the surfaces and inner cavities of workpieces suspended on rotating hooks, removing adhered sand, oxide scale, rust layers, and other impurities, thereby achieving a clean surface with the required degree of roughness.