Ten simple deburring methods, there is always one for you!

Those who have struggled in the fastener industry must be familiar with burrs. In the process of fastener processing, it is ubiquitous. No matter how advanced and sophisticated equipment you use, it will be born with the product.

The so-called burr is mainly a kind of excess iron filings generated at the processing edge of the processed material due to the plastic deformation of the material, especially the material with good ductility or toughness, which is particularly prone to burrs, and the problem of burrs is One of the difficult problems in the fastener industry so far.

Ten simple ways to remove burrs

1. Manual deburring

This is also a method commonly used by general enterprises, using files, sandpaper, grinding heads, etc. as auxiliary tools. The file has manual file and pneumatic displacement.

The labor cost is more expensive, the efficiency is not very high, and it is difficult to remove the complicated cross holes.

The technical requirements for workers are not very high, and it is suitable for products with small burrs and simple product structure.

2. Die deburring

Deburring is carried out with a punching die and a punching machine.

A certain amount of die (rough die + fine die) production fee is required, and a shaping die may also be required. (Guide: The processing method and technology of grain)

It is suitable for products with simple parting surface, and the efficiency and deburring effect are better than manual.

3. Grinding and deburring

This type of deburring includes vibration, sand blasting, rollers and other methods, which are currently used by enterprises.

There is a problem that the removal is not very clean, and it may be necessary to manually process residual burrs or cooperate with other methods to deburr. Suitable for small products with larger batches.

4. Frozen deburring

Use cooling to make the burr brittle quickly, and then spray the projectile to remove the burr.

The price of the equipment is about two to three million yuan; it is suitable for products with small burr wall thickness and small products.

5. Thermal explosion deburring

Also called thermal deburring and explosion deburring. By passing some flammable gas into an equipment furnace, and then through the action of some media and conditions, the gas instantly explodes, and the energy generated by the explosion is used to dissolve and remove burrs.

The equipment is expensive (prices in the millions), high operating technology requirements, low efficiency, side effects (rust, deformation); it is mainly used in some high-precision parts and components, such as precision parts such as automotive and aerospace.

6. Deburring of engraving machine

The equipment price is not very expensive (tens of thousands), suitable for simple space structure, simple and regular deburring positions.

7. Chemical deburring

Using the principle of electrochemical reaction, the deburring operation of parts made of metal materials is automatically and selectively completed.

Suitable for internal burrs that are difficult to remove, suitable for small burrs (thickness less than 7 threads) on pump bodies, valve bodies and other products.

8. Electrolytic deburring

An electrolytic machining method that uses electrolysis to remove burrs on metal parts.

The electrolyte is corrosive, and the parts near the burrs are also subjected to electrolysis. The surface will lose its original luster and even affect the dimensional accuracy. After deburring, the workpiece should be cleaned and anti-rust treatment.

Electrolytic deburring is suitable for removing burrs from cross holes in hidden parts or parts with complex shapes. The production efficiency is high, and the deburring time generally only takes a few seconds to tens of seconds.

Suitable for deburring of gears, connecting rods, valve bodies and crankshaft oil passages, as well as rounding of sharp corners, etc.

9. High-pressure water jet deburring

Using water as the medium, use its instant impact to remove burrs and flashes generated after processing, and at the same time achieve the purpose of cleaning.

The equipment is expensive, mainly used in the heart of automobiles and hydraulic control systems of construction machinery.

10. Ultrasonic deburring

Ultrasonic generates instantaneous high pressure to remove burrs.

Mainly for some microscopic burrs, generally if the burrs need to be observed with a microscope, you can try to remove them by ultrasonic.