Machine Processing Method For Removing Burr From Powder Metallurgy

1, sandblasting to Burr
Sand blasting is powered by compressed air to form a high-speed jet beam. The spray material is sprayed at a high speed on the surface of the workpiece that needs to be treated. The impact and cutting of the abrasive on the surface of the workpiece is used to achieve a certain degree of cleanliness and different roughness of the workpiece surface. degree, To improve the mechanical properties of the workpiece surface. For example, the sandblasting treatment of the arc Bevel gear after quenching not only improves the surface finish, but also improves the surface fatigue resistance.
2, roll to remove burrs
The workpiece is rotated by a rotating brush, or the rotation of the brush and the workpiece is driven by a different motor. During the rolling process, the brush produces a load on the burr on the workpiece to make the burr fall off, thus achieving the purpose of removing the burr. The method has a wide range of applications, and reasonably selects the parameters such as the material and rotation speed of the brush, and can process workpieces with different accuracy. It is mainly used for simple structural rotating parts and thin plates, such as Gears, cycloidal rotors, side panels, etc.. Its key technology is to obtain the best effect at what load and what load direction.
3, heat to remove burrs
The principle is to place the workpiece that needs to be removed from the burr in a sealed container class with sufficient strength, and then send a certain proportion of pre-mixed flammable gas, which is ignited by the spark plug to produce an instant high temperature to remove the burr on the workpiece surface. The method has high efficiency and good effect in removing burrs, and does not affect the metallographic structure of parts. It has a wide range of applications, but the cost is relatively high. It is mainly used in parts with complex structures and high accuracy requirements.
4, light decorations to remove burrs
The most widely used lighting machine is the vibration lighting machine and roller lighting machine, which has been widely used in the powder metallurgy industry. Vibration and lighting machine as a source of vibration through the vibration motor, so that the work cylinder produces three-dimensional vibration, the workpiece and grinding stone or steel ball, grinding agent, etc. are closely and evenly mixed, with the machine's high frequency vibration, workpiece and grinding medium spiral vortex rolling, Cutting or polishing the surface of the work object by grinding. The abrasive selection depends on the material, hardness, shape and surface roughness of the part. The roller light trim machine adopts a horizontal return bucket. The barrel is divided into whether or not there is an inner lining, and the inner barrel is covered with PU glue. It can withstand acid and alkali, wear resistance, and prevent collision of workpieces. There is no lining inside the drum, which strengthens the cutting force and the grinding effect is more obvious. It is suitable for powder metallurgical quenching parts.
The above is about the mechanical processing method for the removal of burrs from powder metallurgy. At present, there are many methods for the removal of burrs in mechanical processing parts. When selecting, it should be combined with the actual production of the factory. It is necessary to consider the material of the parts, the size of burrs, and parts., It is also necessary to consider the principle and economy of the method of removing burrs.