In fact, there are many kinds of aluminum coils. With the continuous improvement of processing technology, the processing technology of aluminum coil is also constantly enhanced and improved. Silicon corrodes cemented carbide. Although more than 12% of
aluminum alloy is generally called high silicon aluminum alloy, and diamond tools are recommended, this is not Jue right. The increasing silicon content gradually increases the destructive power of tools. Therefore, some manufacturers recommend the
use of diamond tools when the silicon content exceeds 8%.
Aluminum alloy with silicon content of 8-12% is a transition zone, which can use both ordinary cemented carbide and diamond tools. However, tools with PVD (physical coating) method, no aluminum element and small film thickness shall be used for the application
of cemented carbide. Due to the PVD method and small film thickness, it is possible for the tool to adhere to the sharp cutting edge (otherwise, in order to prevent the abnormal growth of the film at the edge, the edge needs to be passivated enough, and
the aluminum cutting alloy will not be sharp). The aluminum content in the film data may cause the affinity between the blade film and the workpiece material and destroy the combination between the film and the tool matrix. Because the superhard coating
is mostly composed of aluminum, nitrogen and titanium, a few of the cemented carbide matrix may fall off with the film, resulting in edge collapse.
It is recommended to use one of the following three types of tools:
1. Ultrafie particle cemented
carbide tools without coating
2. Cemented carbide tools with non aluminized coating (PVD) method, such as tin plating, tic plating, etc
3. Use diamond tools. The chip holding space of the tool should be large. It is generally advocated to
use 2 teeth, and the front angle and rear angle should be large (such as 12 ° - 14 °, including the rear angle of the end teeth). If only the general milling surface can be used, the indexable surface milling cutter with 45 ° main deflection angle and
the blade specially used to process aluminum alloy should have a better effect.
Alumina was electrolyzed in the laboratory in 1808 and became aluminum material. It was used as a building material on the steeple of the Washington Monument in 1884;
Aluminum alloy materials composed of various metal elements have been widely used in various links in the construction industry. Thickness of common aluminum alloy plates: the thickness of metal roof (and curtain wall) system is generally 0.8-1.2mm (while
the traditional is generally ≥ 2.5mm).