There are many classifications of aluminum alloys during casting, including aluminum copper alloys, aluminum zinc alloys, etc. Why distinguish it chemically? Because the performance of the product is closely related to its chemical composition. Aluminum silicon alloy has excellent casting performance due to its properties. Aluminum silicon alloy also has some compatibility with gray cast iron. Aluminum copper alloy has poor casting performance and a limited solidification range because it does not contain eutectic components. In fact, in general production, the solidification range of aluminum silicon alloy is relatively small, so the efficiency of its riser shrinkage naturally increases. And it is easy to obtain castings with good density. Other alloys are the opposite. Because alloys are easily oxidized and absorbed, we should ensure a smooth flow of aluminum liquid during casting. The time for degreasing will be determined based on the actual situation of the workpiece. The time cannot be too long, otherwise the oil removal will not be thorough, but it cannot be too short, otherwise the surface of the workpiece will become dark. Due to the need to frequently salvage the residue and debris inside, the editor suggests changing the tank fluid every 4 months.
The degreasing time of aluminum castings should be considered as a casting process
2025 06/30