Aluminum parts have a wide range of applications. One of them is as automotive parts, which requires automotive aluminum parts to have excellent mechanical and physical properties in order to meet the needs of automotive parts. Secondly, automotive aluminum parts can have a variety of comprehensive properties of strength, hardness, and toughness, and they are better in wear resistance, high temperature resistance, and corrosion resistance.
From the current point of view, aluminum parts have a wide range of weights and sizes. The light weight is only a few grams and the weight can reach several hundred tons. The thickness of the casting is only 0.5 mm, and the thickness can exceed 1 meter. It ranges from a few millimeters to a dozen meters, so some are always suitable for automotive use.
For the appearance quality of automotive aluminum parts, the surface roughness can generally be judged by comparing samples; the fine cracks on the surface can be inspected by coloring method, magnetic particle method, etc. Of course, the internal quality of automotive aluminum parts cannot be ignored, and audio, ultrasonic, eddy current, x-ray and gamma rays can be used to check and judge.
The quality of automotive aluminum parts has a great impact on the performance of the car. For example, the impeller, casing and hydraulic parts of various types of pumps are made of aluminum parts, then the size of their internal cavity, the accuracy of the profile and the surface roughness directly affect the working efficiency of the pump and hydraulic system. Development of energy consumption and cavitation.
It is recommended to use sand casting for the casting of automotive aluminum parts. The main reasons are that sand casting has lower cost than other casting methods, and the production process is simple and the production cycle is short. And when the wet type can not meet the requirements, then consider using the clay sand surface dry sand type, dry sand type or other sand type.