Aluminum insulation roll

Aluminum coil

Aluminum coil is a kind of metal product for flying shear after calendering and bending.

Silicon has corrosive effect on cemented carbide. Although the aluminum alloy with more than 12% Si is generally called high silicon aluminum alloy, and diamond cutting tools are recommended, this is not absolute. The increasing silicon content gradually increases the destructive power of the cutting tools. Therefore, some manufacturers recommend using diamond tools when the silicon content exceeds 8%.

Aluminum alloy with silicon content between 8% and 12% is a transition zone. Both ordinary cemented carbide and diamond tools can be used. However, when using cemented carbide, tools with PVD (physical coating) method, no aluminum element and small film thickness should be used. Because the PVD method and small film thickness make it possible for the tool to maintain a sharp cutting edge (otherwise, in order to avoid the abnormal growth of the film at the edge, the edge needs to be passivated enough, and the cutting aluminum alloy will not be sharp enough), and the aluminum contained in the film material may cause the blade film to interact with the workpiece material and destroy the combination of the film and the tool matrix. Because the superhard coating is mostly a compound of aluminum, nitrogen and titanium, it may cause edge collapse due to a small amount of peeling off of cemented carbide matrix with the film.

It is recommended to use one of the following three types of tools:

1. Uncoated ultra-fine particle cemented carbide tools

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. Generally, it is recommended 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 it is only a general milling surface, you can use an indexable surface milling cutter with a main deflection angle of 45 ° and a blade specially used to process aluminum alloy, which should have a better effect.

Alumina was also made of aluminum by electrolysis in the laboratory in 1808, and was used as a building material on the spire of the Washington Monument in 1884; Aluminum alloy materials synthesized by adding various metal elements have been widely used in all links of the construction industry. Thickness of commonly used aluminum alloy plates: the thickness of advanced metal roof (and curtain wall) system is generally 0.8-1.2mm (while the traditional is generally ≥ 2.5mm)