BRM's Flexible Honing, Surface Finishing, and Deburring Blog Blog

BRM's Flexible Honing, Surface Finishing, and Deburring Blog

BRM's Flexible Honing, Surface Finishing, and Deburring Blog is the place for conversation and discussion about how to solve difficult finishing problems. For over 50 years, Brush Research Manufacturing (BRM) has helped customers use brushing technology to clean, rebuild, and resurface components ranging from engine cylinders to brake rotors to flywheels to firearms. BRM's Blog on CR4 provides real-world examples of how flex hones and wire brushes work. It also evaluates related technologies and invites questions from the community.

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Nylon Abrasive Brushes for Surface Finishing and Deburring

Posted October 29, 2013 3:27 PM by Brush Research

Nylon abrasive brushes remove burrs, blend edges, and improve surface condition while increasing part quality and reducing cycle times. Designed for use with semi-automatic and fully-automatic equipment, these high-performance power brushes are replacing labor-intensive manual operations in applications such as aerospace, automotive, and appliance manufacturing. By learning more about abrasive nylon brushes, manufacturers can better understand their benefits.

As the NamPower Resource Guide from Brush Research Manufacturing (BRM) explains, nylon abrasive brushes are made of flexible nylon abrasive filaments that promote maximum burr removal rates and optimum surface finish. Like flexible files, these metal finishing and deburring tools conform closely to part contours. By decreasing spindle speed with increased depth of interference, NamPower users can ensure that nylon filaments wipe across part surfaces rather than hitting the part and bouncing off.

Advantages of Nylon Abrasive Filaments

The "N" in NamPower brush tools stands for nylon, a tough synthetic polymer with good memory, excellent fatigue properties, and moisture and chemical resistance. Although the nylons in nylon abrasive materials (NAM) have varying degrees of heat resistance, NamPower technology uses a unique flow-through cooling system that promotes brush life. Unlike other coolant systems, NamPower brush tools allow fluid to flow from the brush center instead of supplying lubrication only from the outside.

NamPower nylon abrasive brushes are also unique in that that they use a special combination of ceramic and silicon carbide (SC) abrasive. Tough, sharp, and hard, these cost-effective abrasive grits are available on both NamPower abrasive disc brushes and NamPower composite hub wheels brushes. Grit selection is highly dependent on starting surface finish and the amount of material refinement required. Coarser grits are recommended for heavier burrs, or when a fine surface finish is not required.

Why Nylon Abrasive Brushing Is Better

Nylon abrasive brushing offers greater consistency than hand filing and increased flexibility over rigid tools used in robotic and automated workstations. As nylon abrasive filaments wear against the work surface, sharp new abrasive grains are continuously exposed. In addition to providing a consistent brushing action, NamPower brush tools can accommodate various part contours. Moreover, because dedicated production equipment isn't needed, these power brushes can be used on existing machinery.

Other surface finishing techniques lack these advantages. For example, dedicated machinery is needed for mass media finishing, abrasive flow and jet machining, thermal deburring, and electro-chemical deburring (ECD). Both abrasive flow machining and thermal deburring also require special tooling. Air blasting, another surface finishing technique, is suitable only for light burrs. Non-woven abrasives cannot reach recessed areas, and buffs and compounds require extensive cleanup.

Small Spaces and Sharp Edges

NamPower brushing tools also allow entry into small spaces and the smoothing of sharp edges. Dot-style abrasive disc brushes feature flexible nylon abrasive filaments that can enter small holes and spaces with ease. NamPower wheel brushes are ideal for removing sharp edges from metal parts and creating a desired edge radius. For both machine-based and offhand deburring, these radial wheel brushes feature indestructible cores with higher filament density and balanced construction.


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Previous in Blog: Flexible Honing for Cross-Drilled Holes and Radiused Ports   Next in Blog: Nylon Abrasive Wheel Brushes for Deburring, Edge Blending, and Surface Finishing