The iron has limited solubility in the aluminum, so once it goes into solution, it is like salt and water. They aren't easily separated. However, as the temperature decreases, the solubility goes down, so the iron may come out of solution. Usually, the aluminum will form cracks as the casting cools to ambient temperature. Silicon could also increase because it is present in the iron. It is typically added as ferrosilica as a deoxidizer.

The term wrought usually refers to metal that is hot rolled from a casting. The original cast grain structure is modified, i.e., reduced during the rolling process.

Al

In welding aluminum parts by CO2 welding method with carbon dioxide gas, aluminum welding wire is used, which is often supplied as a coil with very high purity. Aluminum welding wire is used in diameters higher than 0.8 mm and can be used in MIG, MAG welding and even as an aluminum welding wire. This method of welding with carbon dioxide gas requires high precision and skill, and finally creates an integrated weld with good quality without slag and the need for surface cleaning, unlike welding with electrodes. The capabilities of aluminum welding wire in surface tension increase the surface in front of the molten pool in the joints of aluminum parts, and this increases the capabilities of the final part against the applied stresses.

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