Abrasive Nylon Wheel Brushes Provide Deburring for Extremely Hard Metal Parts
A Special Report
by Jeff Elliott
Here’s what you need to know about abrasive nylon wheel brushes and deburring extremely hard metal parts.
When an application calls for surface finishing, cleaning, polishing, deburring, edge blending or removal of paint, rust or other contamination, a wheel brush is often the ideal solution. Wheel brushes are motor-driven and may feature an arbor hole or keyway that supports their use with grinding equipment or CNC machinery.
When metal wire filaments are used, they are excellent tools for light deburring, edge blending and general surface finishing. The brushing action occurs at the edge or face of the tool on machined parts such as steel shafts, gears, turbine blades, or extrusion cut-offs. However, when harder materials are involved, wire filaments can break off, or deform – even if crimped.
Although knotted wire options are available for more aggressive deburring, for today’s hardened steels and alloys even this type of wheel brush is not sufficient. Alternatively, a recent aggressive deburring or surface finishing the solution is a wheel brush that utilizes abrasive nylon filaments made of silicon carbide. Taking it one step further, diamond grit can be used for the hardest metals and alloys in use today.
As an example, steps taken by JR Precision & Welding, a machine shop in Houston, Texas, was able to solve the issue of removing large burrs from machined holes in an extremely hard 4140 steel alloy part used as a muzzle brake for firearms which was proving a challenge.
Here’s how they fixed it.