Deburrer job

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Aluminum is very easy to machine, but it’s abrasive, so cutting tools will tend to wear quickly. The best drill bits for aluminum are solid carbide because solid carbide is very hard and stays sharp much longer than other materials, providing extended tool life. If you’re only poking a few holes, high speed steel (HSS) is fine. Using a cobalt drill bit isn’t worth the extra cost because on aluminum, its performance level is about the same as that of high speed steel. Skip the coatings on these drills —there’s no need to increase the already high cost. Especially avoid any coating with “Al” in the ingredients (AlTiN, TiAlN, etc.). A drill bit with a  bright finish is ideal.

Round brushes are used for deburring workpiece edges and contours. They are guided over the cut edge or contour. The rotation of the brush removes the burr from the workpiece.

Deburor deburr

Check out our latest video, and learn how to select the right drill bit to use for the job. Take the guesswork out of drilling holes in metal, as Kurt Repsher walks you through our recommendations for drilling hardened or stainless steels, mild or carbon steels, and aluminum. Subscribe to our channel to see more exclusive how to videos and tips from the pros.

Bur vs burr

Cobalt drill bits are best suited for use on hard to machine metals, including hardened or stainless steel. Cobalt is blended in with High Speed Steel to make the drill bits harder and more wear resistant. As each cobalt drill bit consists of High Speed Steel with a small percentage of cobalt, the higher the percentage of cobalt, the more heat-resistant and durable the drill bit is.

Topics: Aluminum, Video, Metalworking and Machining, Holemaking, Drilling, Rushmore USA, TTC, Viking, Precision Twist Drill, Carbon Steel, Stainless Steel

While steel, sintered metal, or aluminum are primarily deburred with abrasive fill material such as ceramic, silicon carbide, or aluminum oxide, a corrugated steel wire or stainless steel wire is used for cast iron and non-ferrous metals. The abrasive trim material virtually "grinds off" the burr. When using wire bristles, on the other hand, the burr is (mechanically) struck off. As the size of the burr increases, the wire diameter of the brush is correspondingly larger.

Demure

When drilling hardened or stainless steel, select a drill point of at least 135° or higher. This spreads the workload out over a larger cutting surface. Since hardened steel and stainless steel are both quite difficult to drill into, using a drill press or a milling machine should provide the best results.

In addition to many other deburring processes such as barrel finishing or thermal or chemical deburring, the use of technical brushes has proven successful for removing burrs. Brushing is a mechanical process.

Deburring Tool

The biggest challenge in deburring is to remove all sharp residues from edges and contours while maintaining the shape, size, and fit of the component. Other challenges are:

Particularly on edges and contours, undesirable deformations can occur during the manufacturing process of components due to material displacement. These burrs must be removed to eliminate the risk of injury and to ensure an accurate fit of the components.

DeNure

Try to avoid the cheapest drill bits, or you could likely end up spending more in the long run. Always use cutting oil or coolant for any drilling operation.

A good quality High Speed Steel (HSS) drill bit is suitable for use on mild steels, but if you need to get a lot of use from them, go with M35 cobalt drills, or even the aforementioned M42 cobalt drills.

Your challenge. Our solution. Osborn offers the best solutions for your mechanical surface treatment challenges. Our experts are highly trained to serve you with the optimum off-the-shelf or customized tools, when and where you need them. Unlike others, we help you optimize your process, meet the highest quality and safety requirements and reduce your costs.

Deburrmachine

The process of deburring edges and contours removes sharp edges from the material's surface. Deburring can be done either manually or by using a machine tool. The process is essential because it improves the quality of the material and makes it more functional. Removing burrs is crucial because they can cause damage to components and operators during assembly, shipping, or use of the product.

Stainless steel can actually ‘work harden’ as it heats up—so keep your cool, take your time, and make sure the tool and work area stay well lubricated.

Need additional assistance selecting the right drill bit for your workpiece material or application? Contact our tech team!