How can burrs be removed?

Question

What will be an ideal response?

Answer 1

Part features that have been produced by cutting processes are prone to have sharp edges and small bits of extraneous raw material attached to them. These bits of material are called burrs; and unless they are removed, they later become trapped between other parts, impairing the mating and function between the parts. Also, parts with sharp edges can cut its handlers, as well as damage surrounding parts. Unless there is a specific need to retain a sharpened edge, it should be removed for safety. For low-volume production, a skilled worker using a file and other handheld tools can remove burrs and edges. For medium- and high-level production volumes, burrs and edges can be removed through a process called tumbling. In this process, a part is surrounded in a bin filled with ceramic pellets. The bin is shaken or rotated, causing the part and pellets to rub against one another. Because the ceramic in the pellets is harder than the material of the part, this action abrasively removes part material most drastically at its sharpest external points. The longer the part is tumbled or the more abrasive the pellets, the more part material removed. The material from relatively flatter surfaces is removed very slowly, so they are left relatively unaltered while sharp edges and burrs are removed. Internal surfaces and edges of the part that are not in contact with the pellets, such as the inside of small holes and screw threads inside small holes, are unaffected by the process. Parts with smaller feature details require smaller pellets.