Patent

The basic principle of thermal deburring

2019-06-03

The workpiece is placed in a closed metal chamber filled with a mixture of combustion gases and oxygen. The gas mixture is ignited and the combustion of the gas causes the temperature in the chamber to rise to approximately 3,500 degrees Celsius within 20 milliseconds. This short, relatively small amount of heat does not have any effect on the metallurgical properties of the workpieces in the chamber. Thermal effects are generated where their surface area is greater than their mass and heat is rapidly conducted, such as burrs and shredding. As the gas burns, the temperature exceeds its ignition point, causing the burr to burn. Once the flame reaches the root of the burr, the residual heat is absorbed by the mass of the workpiece and the combustion process ends. This is the basic principle and process of deburring heat.




The thermal deburring has the characteristics of removing burrs and flashing edges without affecting and damaging the size or metallographic structure of the workpiece. The thermal method removes burrs from any part of the part, including parts that cannot be reached by hand, intersections of holes in the parts, and even burrs in blind holes. It is better than manual deburring is:




1. It is not necessary to check whether there are burrs that have not been removed or removed after processing, and the effect is reliable and high efficiency;




2, can handle a variety of materials: zinc, aluminum, copper, steel, stainless steel, cast iron, and hot melt plastic parts;




3, similar parts, even if the size is slightly different, can be put together to deal with; for different sizes of parts, only need to slightly adjust some processing parameters, even without changing the time can be processed;




4. The production cost is greatly reduced, and the quality and life of the parts are ensured. The functions, structural features and technical requirements of the friction pair materials and the shaft parts are selected. The blanks of the shaft parts and the common faults of the material are eliminated. The use of gears requires standard construction and composition of domestic and international gear precision standards and the current quality problems of quenching media for gear quenching.




Thermal deburring machine for the complete removal of loose, fixed-shaped burrs and attachments on the surface of the workpiece. The temporary heat generated by the detonation of the mixed gas surrounding the workpiece exceeds the burrs attached to the workpiece and the burning point of the dirt (metal or non-metal), causing it to oxidize or burn.


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