Thermal Deburring and Deflashing
The thermal deburring process is ideal for removing burrs in difficult to reach areas, such as those in machined and die cast parts. Thermal deburring is conducive for all types of metal, with the exception of magnesium.
In thermal deburring, heat is used to deburr or deflash parts. Parts are sealed in a closed chamber which is then filled with a mixture of oxygen and natural gas, which is ignited to generate combustion as an energy source for processing. During the combustion process, the short burst of intense heat that is created affects all surfaces inside the chamber. Though this blast of heat only lasts roughly 20 milliseconds, temperatures can reach upwards of 3000°C (5430°F).
Because they have a relatively large surface area in relation to their mass, burrs are quickly heated above the combustion point and burn off, combining with excess oxygen to create an oxide powder that is easily cleaned away after processing. The remainder of the part, having considerably greater mass, is unaffected by the brief burst of heat. The part′s dimensions and metallurgy remain unchanged.
Thermal deburring is a highly effective process that can be applied to parts of all shapes and sizes. It not only removes burrs from external part surfaces, but also internal burrs and burrs in difficult or impossible-to-access areas, such as inside tapped holes or other cavities. Thermal deburring delivers fast, reliable results.
Below are samples of parts that have been processed via thermal deburring by Arrow Cryogenics.