Mill scale is a flaky surface that forms on hot rolled steel while the metals are being treated in rolling mills. Mill scale consists of iron oxides and is a combination of black and blue in color. Mill scale is initially useful in protecting the meta beneath it from environmental corrosion, however it has unwanted effects after time once the metal is being processed. If paint has been applied over it, this paint will eventually fall off as the mill scale breaks and falls off as well. For this reason, it is often preferred to remove mill scale immediately after processing of the metals, with the most popular methods of mill scale removal being pickling, flame cleaning, or abrasive blasting.
Mill scale removal can be a tedious process, and larger operations such as shipyard often leave metals alone for a long time to allow for most of the scales to fall off naturally with environmental corrosion. However, this long waiting time is not possible for most smaller operations which is when an efficient and cost-effective mill scale removal process needs to take place. Abrasive blasting has become a popular solution of removing scales, with harder and tougher abrasives being the most effective. Brown fused aluminum oxide is one of the hardest and toughest abrasive medias on the market, and therefore, is a favored and effective choice for the mill scale removal process.
Great Lakes Minerals LLC (GLM), an American owned company, is a producer of refined/sized Brown Fused Alumina, also known as Brown Fused Aluminum Oxide, and other alumina based industrial mineral products used as raw materials in the refractory and abrasive industries, with one main application being mill scale removal. GLM has the capability to crush, size, package and warehouse Brown Fused Aluminum Oxide and other industrial minerals in order to fulfill all mill scale removal needs.
Our state-of-the-art facility is centrally located in Wurtland, Kentucky, strategically positioned on the Ohio River and is one of the most efficient processors of Brown Fused Alumina in the industry. All production processes are controlled via a state-of-the-art PLC system and every pallet of finished product is bar coded upon packaging which provides permanent QC traceability. The GLM facility also uses some of the most advanced dust collection technology available, resulting in much greater visibility within blast cabinets or blast rooms. Our difference in quality is immediately apparent to clients when compared to competitor products. Upon shipment, product certifications are automatically emailed to customers. GLM’s core management team are some of the most qualified and experienced professionals in the industry, most of which have been in place since inception over 20 years ago.
We produce abrasive grains specifically for mill scale removal applications – in sufficient quantities for the full range of grit sizes (6 – 240). Our fused aluminum oxide abrasive grains are made for maximum toughness and hardness to deliver superior performance in your mill scale removal applications.
Brown Fused Alumina is one of the best abrasives available for mill scale removal, in terms of cleaning potential, low dusting properties and reusability. It is an extremely aggressive media and, due to its’ composition of 95% pure aluminum oxide, it will not promote rust or ferric contamination on the surfaces it is being applied to. It is commonly used in blast cabinets, blast rooms and any production environment where spent abrasive can be reclaimed. The advantage of Brown Fused Alumina for mill scale removal is it can be reused up to 7 times for most applications, unlike other blasting media options, such as garnet or coal slag which generally have a one- or two-time use.
Customers of Great Lakes Minerals employ Brown Fused Alumina for a variety of purposes, including:
- Rust removal
- Surface preparation for automotive components
- Precision aviation blasting
- Surface preparation for thermal spray coatings
- Cleaning and preparing aerospace components such as turbine blades
- Cleaning of investment casting surfaces
- Steam turbine scale removal
- Mill scale removal
- Heat treat scale removal
- Glass etching or frosting
- Precision finishing of medical devices and precision parts
- Monument lettering
We produce Brown Fused Alumina abrasive grains specifically for blasting applications, including mill scale removal – in sufficient quantities for the full range of grit sizes (6 – 240). Our brown fused aluminum oxide abrasive grains are made for maximum toughness and hardness to deliver superior performance in your mill scale removal abrasive applications and comply with all major industry standards including American National Standards Institute (ANSI) B74.12 Table 3, MIL A21380 B, CID-AA-59316, CSS12 and General Electric Aircraft Engine Group D50tF5-S8 Class D. GLM is an approved Pratt & Whitney supplier.
Contact us at 606.833.8383 or visit us on the web at www.greatlakesminerals.com. We look forward to working with you for your mill scale removal and other abrasive related needs.