Abrasive tool solutions developer, manufacturer and supplier PFERD offers a range of tungsten carbide burrs, specifically designed for the foundry and castings industry.

Tungsten carbide (TC) burrs are used in the foundry industry on a daily basis, mostly to clean, to shape, remove casting lines and remove excess or left-over material. The tools are frequently used in the tool and die, or pattern, department for the repair and manufacture of casting moulds.

TC burrs are preferred in many instances over traditional abrasive mounted points, also known as grinding stones, because of their improved stock removal, extended service life and ability to consistently maintain their tool geometry for a long period.

PFERD patented its first Rotary Milling File (TC burr) in 1942 and has since continued to develop and build on their range of TC burrs to ensure the most efficient solution for the various applications found within the industry.

They supply a range of material-specific TC burrs, which includes burrs to mill cast iron, stainless steel (INOX), and steel and non-ferrous materials including aluminium and titanium.

“These tools are available in various sizes and are used with pneumatic or electric straight or pencil grinders, making them highly versatile within the foundry industry. Considering the use and potential impact of these tools within the foundry environment, it is of utmost importance that the correct tool drive and consumable is combined to achieve the best economic efficiency and highest operator comfort and safety,” explains PFERD South Africa national sales manager Dennis Phillips.

This being the case, PFERD has designed and manufactured TC burrs dedicated to the foundry industry to meet its needs.

The CAST cut range of TC burrs features high stock removal rates on cast iron, owing to its innovative tooth profile. The burrs produce large chips and good chip removal, saving time and energy and, ultimately, improving efficiency.

“Field tests have indicated that the CAST cut burrs produce up to 100% higher stock removal rates when compared to conventional cross-cut burrs,” says Phillips.

Additionally, the CAST cut burrs improve operator safety and comfort thanks to the smoother milling action that reduces vibration and noise.

“PFERD developed the CAST cut TC burrs to withstand higher operational impact, consequently minimising the risk of breakage, extending the product’s overall service life and increasing the safety of the operator,” says Phillips.

HICOAT coating

Mechanical load, such as vibration, has a direct impact on the tool’s performance and service life, but heat generation during use also plays a huge role.

Phillips explains: “To minimise the heat that is generated during the milling process, PFERD offers TC burrs (including the CAST cut) with a specialised coating known as HICOAT”.

The HICOAT coating significantly reduces heat during the milling process and increases the tool’s service life. Additionally, this anti-wear coating enhances chip removal, owing to its improved anti-adhesion characteristics.