3M 61986510354 TC330 Roto Pein Flap Disc - 14 X 31mm

Features

Our 3M™ Roto peen flap assembly, made with a flap and mandrel, was designed using captive shot flap technology

To create this unique and portable assembly, we adhered tungsten carbide shot to flexible flaps using high strength resin

Two flaps are bonded together with a special adhesive for easy placement in a flap mandrel

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

Our 3M™ Roto peen flap assembly does not require a sandblaster or the accompanying abrasive materials, as the tungsten carbide shots are already adhered to the flap

The benefits of this unique construction are twofold

First, peening is cleaner because debris is not released as the flaps abrade the surface

The captive shot flaps provide a more precise method than loose shot "blasting"

Second, the assembly is portable, making it more convenient for operators to use

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

Flap/mandrel assembly is portable for added convenience

Tungsten carbide shot is bonded to the flaps, providing a cleaner peening method than loose shot "blasting"

Available in three flap sizes for both small and large surface areas

Especially effective for precision in-service rework, manufacturing, repair of small areas, and peening holes

Our 3M™ Roto Peen flap assembly effectively peens a variety of metals

Applications

• For precision in-service rework, manufacturing, repair of small areas
  and peening holes

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