Which components are commonly projection welded to a sheet metal part?

Which components are commonly projection welded to a sheet metal part?

• A. Bolts, Nuts, Pins, Brackets and Handles
• B. Wires and cables
• C. Screws only
• D. Rivets

Answer: (A)

Projection welding uses a small raised feature, a projection, to concentrate current and heat so a weld forms precisely at that spot. This makes it ideal for attaching hardware directly to sheet metal in automated, high-volume production. Components like bolts, nuts, pins, brackets, and handles are commonly designed with suitable projections that can weld to the sheet, allowing fast, reliable joints in a single or few spots. Wires and cables don’t provide the rigid, localized contact points needed for this process, so they aren’t typically projection welded. Screws are meant to be driven or threaded, not welded to a sheet in standard practice, and rivets are usually joined by riveting or deformation rather than projection welding. So, the hardware group with bolts, nuts, pins, brackets, and handles fits projection welding best.

Projection welding uses a small raised feature, a projection, to concentrate current and heat so a weld forms precisely at that spot. This makes it ideal for attaching hardware directly to sheet metal in automated, high-volume production. Components like bolts, nuts, pins, brackets, and handles are commonly designed with suitable projections that can weld to the sheet, allowing fast, reliable joints in a single or few spots. Wires and cables don’t provide the rigid, localized contact points needed for this process, so they aren’t typically projection welded. Screws are meant to be driven or threaded, not welded to a sheet in standard practice, and rivets are usually joined by riveting or deformation rather than projection welding. So, the hardware group with bolts, nuts, pins, brackets, and handles fits projection welding best.