Aluminium is a soft metal with high thermal conductivity that tends to smear heavily during grinding. These properties make the grinding process more complex than with other metals and require special techniques and tools.

Flap discs, fibre discs and special sanding belts with a suitable coating that prevents the sanding discs from clogging are particularly suitable for sanding aluminium. Sanding papers in various grit sizes are also commonly used, depending on the desired surface finish.

Aluminium dust is highly flammable and can be explosive. Extraction systems and personal protective equipment, such as respirators, are therefore required to minimise risks. Attention should also be paid to the correct storage of sanding dust.

Sanding removes the natural oxidation layer of aluminium, which quickly forms again. This can have an impact on subsequent processes such as gluing or painting, which is why work should continue quickly after sanding.

Yes, aluminium can be polished to a high gloss after sanding. Coarse-grained abrasives are used first and then finer abrasive papers and special polishing pastes. Polishing is carried out in several steps to achieve the desired surface finish.

Compared to harder metals, aluminium requires less pressure and special abrasives to prevent the grinding wheels from sticking and overheating. The rapid formation of an oxidised layer and the high thermal conductivity are further challenges.

A contract service provider has the necessary expertise, equipment and experience to grind aluminium efficiently and safely. As a result, high-quality results can be achieved and all safety requirements can be met at the same time.

After grinding, deburring is often necessary to remove sharp edges. This can be done manually with files or by machine. In many cases, polishing also follows to achieve a smooth, shiny surface.

Special abrasives with suitable bonds are used to prevent the grinding discs from clogging. These prevent aluminium particles from clogging the disc, which increases the efficiency and service life of the grinding discs.

By using different abrasives and techniques, different surface qualities can be achieved, from a matt to a high-gloss surface. The degree of polishing and the selected grit of the abrasive determine the final result.