3M™ 7010366000 Roto Peen Flap Assembly 9/16 in x 1-1/4 in TC 330 SPR 013958B

3M™ 7010366000 Roto Peen Flap Assembly 9/16 in x 1-1/4 in TC 330 SPR 013958B

Product Features:

• Especially effective for precision in-service rework, manufacturing, repair of small areas, and peening holes
• Flap/mandrel assembly is portable for added convenience
• Imparts a compressive residual stress that benefits the material by strengthening its durability
• Tungsten carbide shot is bonded to the flaps, providing a cleaner peening method than loose shot "blasting"

Peening, a cold working process for metal, applies repeated stress to the material's surface and strengthens it through compression. The peening method helps improve the material's ability to resist fracture, fatigue and stress corrosion cracking. In traditional shot peening methods, the work surface is sprayed with cast steel shot. While this method is also effective, it has a tendency to dirty the operator’s environment by releasing debris. Additionally, the tools required for this method limit the spaces where an operator can peen.

Flap/mandrel assemblies are especially effective for precision in-service rework, manufacturing, repair of small areas and peening holes. The 3M™ Roto Peen Flap Assembly comes in three sizes and allows for peening a variety of surfaces and radii area. Plus, the uniform TC-330 shot size contributes to consistent results. As the part is peened, a compressive residual stress is created. It’s a non-yielding layer that increases the material’s ability to fight fatigue, stress and fracturing.

Flap rotation speed is the most important factor affecting peening intensity. Increasing the speed of rotation increases the intensity. Conversely, decreasing the speed decreases the intensity. To insure uniform peening coverage, operators should use a circular or oscillating motion over the entire area.

3M™ is a trademark of the 3M Company