Mill scale is a type of iron oxide that is formed on the surface of the steel during the hot-rolling process. The very high surface temperature combined with high roller pressures result in a smooth, bluish grey surface.
If mill scale were a uniformly well-adhered covering to the steel section, then it would make an ideal protective barrier. Unfortunately, mill scale is not uniform, nor is it well-adhered. This latter item is of concern in that many projects have had high quality, expensive protective coatings applied directly over mill scale and inadequately prepared steel only to have the entire structure and coating system fail within a very short period of time.
All mill scale must be removed to present a uniform and clean surface.
Mill scale removal with the Bristle Blaster®
Easily and effectively remove corrosion, mill scale and coatings with the world’s leading hand-held surface preparation tool.
The Bristle Blaster® combines the ability to produce an abrasive blasted finish with the high mobility and flexibility of a portable hand-held tool.
This patented technology is the only feasible solution for maintenance in confined and hard-to-reach areas. It’s easy to operate and removes the need for enclosures, reprocessing or disposal of grit.
The Bristle Blaster® Pneumatic Tool is ATEX approved and can be safely used in Zone 1 (potentially explosive atmospheres) applications.
The Bristle Blaster® Electric Tool ensures excellent flexibility thanks to standard power supply ratings (230 V/120 V).