Burr - People who have struggled in the metal industry must be familiar with it, in the process of metal products processing, it is everywhere, no matter how advanced precision equipment you use, it will be born with the product. The so-called burr is mainly the plastic deformation of the material and a kind of excess iron filings generated at the processing edge of the processed material, especially the malleability or toughness of the material, which is particularly prone to burrs, and the burr problem is one of the problems that the engineers in the metal processing industry have been unable to solve so far.

Here are 10 common deburring methods:

1. Manual deburring

This is also the way commonly used by general enterprises, using files, sandpaper, grinding and so on as auxiliary tools. Files have manual files and pneumatic displacements.

Brief review:

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

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

2. Deburring the die

The deburring was carried out by making a die and punching machine.

Brief review:

Requires a certain amount of die (rough die + fine die) production costs, may also need to produce plastic die.

Suitable for simple parting surface products, efficiency and deburring effect is better than manual.

3. Grind and deburr

This kind of deburring includes magnetic deburring, vibration, sandblasting, roller and other methods, which are currently used by enterprises.

Brief review:

There is a problem that the removal is not very clean, which may require subsequent manual treatment of residual burrs or other methods of deburring.

Suitable for large batch of small products.

4. Remove burrs by freezing

Cooling is used to rapidly embrittlement burrs, which are then removed by spraying projectiles. deburring

Brief review:

The price of the equipment is about two or three hundred thousand;

Suitable for products with smaller burr wall thickness and smaller product. Deburring machine

5, hot explosion to remove burrs

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

Brief review:

The equipment is expensive (millions of prices), the operation technology requires high, low efficiency, side effects (rust, deformation);

Mainly used in some high-precision parts, such as automotive aerospace and other precision parts.

6, engraving machine deburring

Brief review:

The equipment price is not very expensive (tens of thousands), suitable for simple spatial structure, the required deburring position is simple and regular.

7. Chemical deburring

On the principle of electrochemical reaction, the deburring of parts made of metal materials can be completed automatically and selectively.

Brief review:

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

8, electrolytic deburring

An electrolytic machining method for removing burrs from metal parts by electrolysis.

Brief review:

The electrolyte has a certain corrosiveness, the vicinity of the burr of the part is also subjected to electrolysis, the surface will lose the original luster, and even affect the dimensional accuracy, the workpiece should be cleaned and anti-rust treatment after deburring.

Electrolytic deburring is suitable for removing the burr of concealed parts or complicated parts, with high production efficiency, and the deburring time is generally only a few seconds to tens of seconds.

Suitable for deburring gear, connecting rod, valve body and crankshaft orifice, as well as chamfering of sharp corners.

9, high pressure water jet deburring

With water as the medium, the instantaneous impact force is used to remove the burrs and flash produced after processing, and the purpose of cleaning can be achieved.

Brief review:

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

10, ultrasonic deburring

Ultrasound produces instantaneous high pressure removal of burrs