EDGE ROUNDING

What is edge rounding?

The edge rounding is the process of grinding metal edges and holes to remove sharp corners burrs. Smooth edges can improve paint adhesion and prevent rust. Usually, these raised burrs are the result of stamping, milling or cutting operations such as lasers and plasma. In order to improve the rate of finished product yield of the next process, deburring and edge rounding are indispensable steps


Edge Rounding with Rotary Brushes/Rounding Blocks


  1. Rotary brushes are equipped with abrasive lamellas. By the rotation of the brushes, the abrasive filaments are pulled across the sheet metal edges and thus achieve their powerful impact on the part edges. 

  2. While the parts on a conveyor belt are moved under the rotor, the rotary brushes make contact with the part from above. An additional carousel is particularly effective - the so-called rotor - that holds several rotary brushes, which allows for the parts to be uniformly processed from all directions. 

  3. That is why of all rounding processes, rotary brushes achieve the best and also the most consistent edge rounding results.


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Edge rounding machines at ADV Grinding


In the past, we used manual chamfering tools, sandpaper, and files to round the edges, but the consistency of the product could not be guaranteed, and sharp edges and burrs may injure your employees. With our 508 series deburring equipment, sharp edges will be smoothed, removed and rounded. Even edge rounding with a radius of up to 2mm can be achieved. The following are some deburring machine series that can round



ADV 508-M300

The best solution for manual deburring for grinding, deburring, edge rounding and polishing of metal surfaces.


ADV 508-RW

Deburring, edge rounding and finishing of internal and external contours, suitable for laser cutting, water cutting, and punching parts

ADV 508-RY

Disc brushes with different abrasives can quickly remove heavy or light burrs and edge rounding. suitable for automotive parts and precision parts

ADV 508-RS

The high-speed rotating sand block makes the inner and outer edges of the workpiece smooth and rounded, creating rounded corners

Frequently Asked Questions

WHY IS EDGE ROUNDING IMPORTANT?

Edge rounding can make the coating and paint cover and not easy to fall off.

Rounding the edges on metal parts, also known as edge rounding or edge radiusing, is an important metal processing step. This step safeguards handling of parts with no injuries, durability and overall final product quality. Sharp edges usually occur after a thermal cutting process such as laser, flame or plasma cutting as well as during punching and machining. Having rounded edges on metal parts also greatly increases the paint-adhesion to the parts and thus not leading to any rust on final products. Key reasons to round metal edges are:

  1. Better coating & paint adhesion

  2. Improved safety for handling

  3. Enhanced durability & performance

  4. High product quality

  5. Improved fit and function during assembly

  6. Compliance with industry standards


Why is edge rounding of sheet metal and heavy plate important?

  1. Protect workers,Prevent assemblers from being cut by sharp edges during manual processing

  2. Edge rounding is an important process step for sheet metal and heavy plate. Based on the history of expertise from ADV, having a rounded edge improves safety, coating performance, and long-term durability. 

  3. After laser cutting, flame cutting, plasma cutting, punching, the edges often remain sharp or uneven. 

  4. Proper edge rounding ensures smoother, safer, and more reliable parts for efficient downstream processes without any rework or having to scrap parts.

How is edge rounding performed in modern manufacturing?
Edge rounding can be achieved using mechanical machines like the Edge 508 W/Y/S series from ADV or do it manual by hand via grinding wheels . Conducting edge rounding via hand is a dangerous task and cannot safeguard consistent edge rounding results. Therefore, using the Edge Rounding 508 series from ADV uses either block brushes that are comprised of sandpaper with scotch-brite, disc brushes or rotary brushes to conduct edge rounding. Selection of which edge rounding method depends on material type and thickness.
Can edge rounding of laser cut, punch parts as well as flame and plasma cut parts be combined with otherprocesses?

Yes, edge rounding can be efficiently combined with other processes to streamline production, reduce handling, and improve overall part quality. Modern edge rounding machines can be combined with machines for deburring, metal surface finishing, as well as leveling and material handling.

When assembling mating parts, products with sharp edges and burrs removed are easy to assemble

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