Ten ways to remove burrs

It is common for burrs to appear on parts during the mold production process. What should we do when this phenomenon occurs? Now, we would like to share with you ten ways to remove burrs.

1. Manual deburring
It is a method commonly adopted by general enterprises, usually using some auxiliary tools such as files, sandpaper, grinding heads, etc.. Among them, files include manual files and pneumatic files.

--Brief comment:
The labor cost is expensive and the efficiency is not higher. Besides, it is difficult to remove complex cross holes. Therefore, it is suitable for products with small burrs and simple structures because the technical requirements for workers are not very high.

2. Deburring of punching die
Use punching die and punching machine to deburr.

--Brief comment:
It requires a certain amount of punching die production fee, and it may also be necessary to make a sizing die. Therefore, it is suitable for products with simple parting line. The efficiency and deburring effect are better than manual.

3. Remove burrs by grinding
This type of deburring includes vibration, sandblasting, roller and other methods, which are currently widely used by companies.

--Brief comment:
There is a problem that it is not easy to remove the burrs completely, and it may be necessary to manually handle the residual burrs or use other methods to remove the burrs. It is suitable for small products with large batches.

4. Remove burrs by freezing
Cooling the burrs to make it brittle quickly, and then remove the burrs by ejecting the pellet.

--Brief comment:
The equipment price is about 200,000 or 300,000 yuan. It is suitable for small products with smaller burr and wall thickness.

5. Remove burrs by thermal explosion
Some inflammable gas is introduced into a furnace of a device. And then under the action of certain media and conditions, the gas is to explode instantly. At last, the energy generated by the explosion is used to dissolve and remove burrs.

--Brief comment:
The equipment is expensive because its price is over a million yuan. It requires higher operation technology and its efficiency is lower. Besides, it also has some side effects such as rust and deformation. Therefore, it is mainly used in some high-precision parts fields, such as automobile, aerospace and so on.

6. Deburring with engraving machine
It is a method of deburring by using a engraving machine.

--Brief comment:
The equipment is not very expensive because its price is about tens of thousands. It is suitable for products with simple spatial structure and simple and regular deburring position.

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

--Brief comment:
It is suitable for the internal burrs of parts that are difficult to remove, such as the fine burrs of pump bodies, valve bodies and other products.

8. Electrolytic deburring
This is an electrolytic processing method that uses electrolysis to remove burrs from metal parts.

--Brief comment:
Electrolytic deburring is suitable for removing burrs from cross holes in hidden parts or parts with complex shapes, such as gears, connecting rods, valve bodies, crankshaft oilway openings, rounding of sharp corners, etc.. It has high production efficiency and the deburring time generally only takes a few seconds to tens of seconds. However, the electrolyte is corrosive to a certain extent. The area near the burrs of the part is also affected by electrolysis, which causes the part’s surface to lose its original gloss and even affect the dimensional accuracy. Therefore, the workpiece should be cleaned and rust-proofed after deburring.

9. High-pressure water jet deburring technology
With water as the medium, the water instantaneous impact force is used to remove the burrs and flash produced after processing, at the same time, the cleaning purpose can be achieved.

--Brief comment:

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

10. Ultrasonic deburring
Ultrasonic waves generate instantaneous high pressure to remove burrs.

--Brief comment:
It is mainly used for some microscopic burrs. Generally, if the burrs need to be observed under a microscope, it can try to remove them with ultrasonic waves.

In the process of removing burrs from parts, a combination of pre-control and post-processing should be adopted. Through the design of reasonable machining process in advance, the probability of burrs can be effectively controlled. In the meanwhile, taking appropriate treatment measures afterwards will play a more important role in improving the quality of machining. The reasonable combination of the two will play a positive role in improving the quality of parts processing.