Thermal deburring uses high heat to remove imperfections on parts left over from the machining process. Deburring works on the microscopic level, destroying every possible burr on the surface of a metal part. JAYCO Cleaning Technologies explains the four types of burrs that form on metal parts after going through machining operations.
A rollover burr is the most common type of burr you see on metal or thermoplastic workpieces that need thermal deburring. Rollover burrs happen when a partially formed chip bends in the same direction as the cut itself. The burr stays attached at the end of the workpiece after it rolls over to another surface at the end of the cut. Visualize pushing a screwdriver blade horizontally and forward along the surface of a piece of plastic. Material gathers in front of the blade and then stays attached to the main plastic piece as it flops over to the vertical edge of the plastic after your screwdriver reaches the edge. The material hanging on the vertical edge is called a rollover burr.
A poisson (pronounced “pwahs-soh”) or compression burr forms when a material bulges outward due to downward pressure. See what happens when you flatten a bead of glue between two small pieces of wood. A poisson burr would form when excess glue sticks out from the sides of the workpiece. Thermal deburring would make that edge completely clean, even after the adhesive dries.
A tear or breakout burr happens when material ruptures at the end of a cut, such as when a drill bit or awl penetrates through a workpiece. The material pushed through by the drill remains stubbornly attached to the surface. Thermal deburring makes the edges of the drilled hole completely smooth down to the microscopic level.
A cut-off burr is the rarest type of burr because it’s the easiest to prevent. Cut-off burrs occur when a portion of the material falls off the primary workpiece. The burr comes from the material left behind by the tear, often a small flake. Manufacturers can prevent this type of burr by completely supporting a workpiece until the part is finished. Thermal deburring gets rid of these burrs, too.
JAYCO Cleaning Technologies offers state-of-the-art thermal deburring machines that clean metal and plastic parts. We also work with parts cleaning equipment, rotary basket washers, and ultrasonic cleaning equipment for all of your industrial cleaning needs. Contact us online or give us a call at (513) 737-9600 so we can talk about your specific situation.