Kayson Green Talks: Aluminium Grinding

Aluminium’s high strength compared to its lightweight, softness, and superior corrosion resistance make it a popular material for metal fabrication. However, working with aluminium offers several challenges due to its low melting point. Heat and friction caused by aluminium grinding can melt and stick to the abrasive and prevent it from working properly.

When working with aluminium, issues can occur. Porosity contamination from the abrasive weakens the structural integrity of the aluminium weld and oxide inclusions. This can compromise the strength and fatigue resistance from the weld where the aluminium oxide layer is not fully removed. So, what is the best way to achieve effective aluminium grinding without undermining the weld?

Tools for Grinding Aluminium

Although lubricants such as grease can improve the grinding process, they have downsides in terms of cost, quality, and safety. The best way to ensure your aluminium weld turns out perfectly is by choosing the right grinding wheels.

The best types of wheels to use for grinding aluminium feature grain blends that offer consistency and a contaminant-free bond. Resin fibre-bonded grinding discs with a flat and firm rubber backing pad are the best options for working with aluminium. The discs should have a lubricant coating as well to counteract any build-up of heat. This helps prevent the aluminium from melting and ensures the abrasive product lasts longer.

Another option for aluminium grinding is with top-coated flap discs in medium to coarse grit sizes. These discs can grind aluminium in less time than resin discs but are much more pliable and need an excellent skill set to get the best result.

Kayson Green

For many years, we at Kayson Green have supplied abrasive products for a wide range of metals.

We have over 45 years of industry expertise providing high-quality abrasive solutions such as grinding wheels, polishing belts, and sanding pads. Our superfinishing grinding cup wheels are an ideal choice for both flat and concave/convex workpieces, producing an accurate and fine surface finish every time. We also have aluminium oxide and silicon carbide cup wheels with sulphur and wax impregnation and a grit size up to FEPA 2000.

Look through our assortment of grinding cups and contact us to find out more.

View Products Call +44 (0)1206 751500 Email sales@kaysongreen.co.uk