Which process involves creating narrow flanges for seams and hems using rolls?

• A. Turning
• B. Burring
• C. Beading
• D. Crimping

Answer: (B)

The process that involves creating narrow flanges for seams and hems using rolls is beading. In metalworking and fabrication, beading is utilized to form a raised or rounded edge along the metal sheet, which can serve various purposes, including enhancing stiffness, providing a decorative edge, and facilitating the assembly of seams. This technique is particularly effective for creating consistent, narrow flanges because it precisely shapes the edges without requiring additional trimming or alterations afterward.

When beading, typically, the material is passed through rollers designed to create this defined edge. This offers a clean and stable surface that can be joined or stitched together, making it highly practical for forming hems and seams in sheet metal work, especially in aircraft structuring where precision and strength are crucial.

Understanding this process is essential in aircraft structural mechanics, as it plays a significant role in the integrity and assembly of components that are critical to safety and performance.