Aluminum castings refer to devices in equipment made of aluminum alloy or pure aluminum using special processing methods of casting. The quality of aluminum castings directly affects the performance and functionality of mechanical products. For example, the wear resistance and dimensional stability of aluminum castings used on machine tools directly affect the accuracy and lifespan of the entire machine tool. For example, the size and profile standards of the impeller and housing of the pump, as well as the internal cavity and surface roughness of the hydraulic components, also directly affect the working efficiency between the hydraulic system and the pump, as well as the development of energy consumption and cavitation. In addition, some internal combustion engine cylinder blocks, cylinder liners, cylinder heads, piston rods, and exhaust pipes also have high requirements for strength and resistance to cold and heat, as they directly affect the service life of the entire engine during operation.
Because aluminum castings have a wide range of weight and size, with lighter ones weighing only a few grams and heavier ones weighing up to 400 tons, but thinner ones with a wall thickness of only 0.5 millimeters and thicker ones not exceeding one meter, and lengths ranging from a few millimeters to tens of meters, aluminum castings can meet the requirements of various industrial sectors. Strict inspection and control of the quality of aluminum castings must be carried out throughout the entire casting production process. We first need to start with the raw materials used in manufacturing, as well as the auxiliary materials, to achieve different control schemes and technical conditions for different products. During the casting process, each step must be strictly controlled according to the rules of the process and relevant technical conditions. After the manufacturing is completed, it is necessary to conduct corresponding quality inspections on the finished aluminum castings. So this requires a complete inspection plan and qualified testing personnel.