If you are blasting aluminum surfaces the abrasive media most often used is glass beads sodium bicarbonate or walnut shells.
Bead blasted aluminum sheet.
Bead blasting is essentially like a pressure washer that uses abrasive media instead of water.
Bead blast is a non directional finish that is uniformly textured and low gloss.
Bead blast can also be used for wall panels coping and trim.
When a sufficiently hard abrasive particle strikes steel it deforms the surface into a valley and pushes up peaks.
Its lower reflectivity makes it suitable for roofing applications.
Steel shot or steel grit should be avoided.
Most shops say it s an art.
The distance between the top of the peak and the bottom of the valley is known as the depth profile.
The result is a matte non reflective finish.
Generally the basic material are 201 304 316l 430 441 443 and the surface would shown nice metal bright after finish.
Pick a media a pressure a distance from the part and then blast the surface.
You cannot use steel based blast medias with aluminum surfaces because steel media will impregnate the aluminum surface and create corrosion.
Any media can be used.
Beadblasting is a process of altering the finish of a metal surface by subjecting the surface to a stream of glass bead sand or aluminum oxide particles delivered via high pressure.
One of the greatest keys to successfully blasting aluminum surfaces is choosing a sandblast media that is appropriate.
Steel is harder than aluminum and can create a surface profile which leads to corrosion.
Key 1 for blasting aluminum blast media choice.
Decorative bead blasted black sheet in order to meet the international market demands we imported an automatic bead blasted production line which is applied to surface processing of stainless steel and aluminum sheets.
In the u s the depth profile is measured by mils thousandths of an inch in the metric system the micron one millionth of a meter is used.
In effect the surface is blasted by the particles.
Walnut shells sand and glass beads are common.
It can be found in applications ranging from anti slip surfaces industrial applications as a blasting media and as a raw material in refractories.
The consistency of the finish makes it excellent for panel to panel matching.
