The ageing of aluminium alloy by removing the piece into the oven at 540. when you reach the temperature set, remove from stove and cool down in the water. After that, Polishing to the sandpaper belt to the smooth surface . And leave at room temperature for a period, and then bring the test measuring the hardness. Why leave it at room temperature at any time, in order to compare the strengths of each time leave. Thereafter, the parts that are left at room temperature for a period equal to kiln per 1 minute, 1 hour, 2 hour and 4 hour at 170 degrees, in order to make a comparison of the strength to the curing time. By the benefits that result from the ageing precipitation is a piece of work will have the strength and speed. Do not take a long time.