The diploma thesis describes the sand blasting machine as a device for mechanical surface treatment of aluminium cast products manufactured in the foundry. Sand blasting increases the product’s resistance to the high temperatures generated in an internal combustion engine, thereby extending its service life. The core of the thesis explains different types of sand blasting and briefly describes various kinds of blasting machines. This is followed by a description of the machine design, including its main components, which play important roles in operation. Particular emphasis is placed on the control of turbines, where the speed and torque of the motors are linked to current control and changes in speed of rotation. In this way, the dosing of the blasting media is evenly distributed across the surface of the aluminium cast product. The thesis also examines the relationships between electrical quantities (current, power, speed of rotation) and mechanical parameters, which play important roles in the blasting process. Finally, in addition to the technical description, the safety aspects of machine use are highlighted. These include operational safety, filtration units, prevention of motor overloads, and considerations for maintenance work.
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