Burrs are an inevitable byproduct of the metalworking process. Regardless of the sophistication of the equipment used, burrs will form due to the plastic deformation of the material and the generation of excess metal filings at the edges, especially in materials with high ductility or toughness.
Burr types include flash burrs, sharp corner burrs, spatters, and other protruding metal residues that do not meet product design requirements. Currently, there is no effective way to eliminate burrs during production. Thus, engineers must remove them post-production. Here are the ten most commonly used deburring methods for seamless tubes.
Manual Deburring
Tools: Files, sandpaper, grinding heads.
Comment: Labor-intensive, relatively expensive, low efficiency, and challenging for complex cross holes. Suitable for small burrs and simple structures.
Die Deburring
Method: Uses production dies and punches.
Comment: Requires mold production (rough mold + fine mold) and sometimes a forming mold. More efficient and effective than manual deburring. Suitable for simpler parting surfaces.
Grinding and Deburring
Methods: Vibration, sandblasting, rollers.
Comment: May not completely remove burrs, requiring additional manual processing. Suitable for small, high-volume products.
Freeze Deburring
Method: Uses cooling to embrittle burrs, then removes them with projectiles.
Comment: Equipment costs around $200,000-$300,000. Suitable for small products with thin walls.
Hot Air Deburring (Thermal Deburring)
Method: Uses explosive gases in a furnace to dissolve and remove burrs.
Comment: Expensive equipment (millions of dollars), high technical requirements, low efficiency, and potential side effects (rust, deformation). Used for high-precision parts like automotive and aerospace components.
Deburring with Engraving Machine
Comment: Equipment is moderately priced (tens of thousands). Suitable for simple structures with straightforward deburring needs.
Chemical Deburring
Method: Uses electrochemical reactions to selectively remove burrs from metal parts.
Comment: Effective for internal burrs and small burrs (less than 7 wires thick). Suitable for products like pump and valve bodies.
Electrolytic Deburring
Method: Uses electrolysis to remove burrs.
Comment: Electrolyte can be corrosive, and electrolysis may affect surface luster and dimensional accuracy. Suitable for intersecting holes, complex shapes, gears, connecting rods, valve bodies, and crankshaft oil passages. High efficiency, with deburring times from seconds to minutes.
High-Pressure Water Jet Deburring
Method: Uses water's instantaneous impact force to remove burrs and clean the surface.
Comment: Expensive equipment. Mainly used in automotive and hydraulic control systems.
Ultrasonic Deburring
Method: Uses ultrasonic waves to generate high pressure to remove microscopic burrs.
Comment: Suitable for very small burrs, often requiring a microscope to observe.
United Steel Industry As the most important steel pipe manufacturer and exporter in China, in the past 20 years, we have completed more than 100 projects, with partners in more than 100 countries, and established relationships with oil and gas and EPC companies in many countries business relationship.
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