How To Clean Cast Aluminum Parts？

1. Casting shell cleaning: Generally speaking, aluminum castings can be further cleaned after being completely cooled. After aluminum castings are cast in the shell, the cooling time of the castings in the mold and the material of the aluminum castings and aluminum castings The shape and size of the parts are directly related to the production conditions. Generally, if the cleaning of aluminum alloy castings is done early, it will easily cause deformation and cracks of the aluminum castings. The cooling time of castings with larger size and more complicated process should be longer, and the cooling time of castings with smaller size and thin wall and simple process can be shorter.

2. Cutting the pouring riser: The main methods of cutting the pouring riser are: gas cutting, grinding wheel cutting, sawing machine, hydraulic cutting, anode cutting, etc.

3. Surface cleaning of aluminum castings: After the aluminum castings are shelled, there will always be iron oxide on the surface of the castings, especially the castings with complex inner cavities, deep grooves, and blind holes, which cannot be cleaned completely, and surface cleaning must be done .

4. Shot blasting treatment: If castings with special requirements can be shot blasted, shot blasting is to use the centrifugal force generated by the high-speed rotating shot blasting impeller to throw iron shots on the surface of the casting, so that the surface of the cast aluminum Sand, sticky sand or iron oxide scale is removed. Generally speaking, the surface of the casting after shot blasting is related to the size of the iron shot.

5. Repair welding: usually refers to castings that do not meet the acceptance technical conditions or the requirements of the order agreement, and have casting defects but can be repaired. First of all, we must clean up the repair welding parts, so that the surface of the aluminum casting is completely clean and exposed to the metallic luster. The size of the defects should be welded from small to large. For example, the area of repair welding is large and the defects should be annealed after welding in important parts of the casting.