Burr is a metal part of the metal casting, milling or electroplating process, metal surface residual or extremely fine microscopic metal particles.
The appearance of burrs will greatly reduce the quality standard of metal workpieces, so it should be prevented or managed to remove burrs.
The easiest way for deburring including the following 10 listed methods:
The operator USES a file, sandpaper and a first-class tool to polish the workpiece and removes the burr.
This method requires not very high for workers’ technical skills. It is suitable for products with small burrs and simple product structure.
Therefore, it is also widely used in general enterprises to remove burrs.
The file is divided into two types: artificial file and pneumatic file.
The cost of the manual file is more expensive, the deburring efficiency is not very high, and it is difficult to remove the complex cross hole.
Deburring with punch
The removal of burrs is carried out with the method of making punch mold worked on the punching machine.
The punching die needs a certain amount of rough and fine blanking die, and it may be necessary to make the sizing die.
Suitable for the simple product, the efficiency and effect of deburring are better than the manual method.
Deburring by grinding
The method of removing burrs by vibration, sandblasting and roller, and is widely used by enterprises.
The problem with deburring by grinding is that sometimes the removal is not very clean and may require subsequent manual processing or other means of deburring.
This method is suitable for bulk small products.
Deburring by freezing
This is a method to use the temperature drop to quickly embrittle the burrs and then spray the pellets to remove the burrs.
Frozen deburring is suitable for products with smaller burr wall thickness and the smaller workpiece.
The price of the whole equipment is a little high, around 30,000-40,000usd.
Deburring by thermal explosion
The method is also called the thermal deburring, or explosion deburring.
This is to pass some of the gas into a furnace, and then through some medium and conditions, the gas will explode instantly, using the energy produced by the explosion to dissolve the burr.
The equipment required for this approach is expensive, usually over 150,000USD. And the requirements for operating technology are very high.
Removal of burrs is inefficient and can cause side effects such as rust and deformation.
Thermal explosion deburring mainly used in some high precision parts, such as automotive aerospace and other precision parts.
Deburring by engraving machine
Use an engraving machine to remove burrs from the workpiece.
The equipment is not very expensive and usually costs several thousands of dollars.
It is suitable for removing the burr with simple space structure and simple position.
The method of chemical deburring is to use the electrochemical reaction principle to automatically and selectively remove the burrs from the parts made of metal materials.
It is suitable for internal burrs that are difficult to remove, especially for small burrs on products such as pump body and valve body.
The method of removing the burr of metal parts by electrolysis.
This method can have certain side effects, because the electrolyte is corrosive, and near the burr is also affected by electrolysis, the surface will lose luster, and even affect dimensional accuracy.
As a result, the workpiece should be cleaned and rusted after electrolysis deburring.
This method is suitable for removing the burr of the cross hole at the concealed part of the workpiece and the complex parts. The production efficiency is high, and the operation usually takes only a few seconds to tens of seconds.
It is applied to the hole mouth of the oil line of gear, connecting rod, valve body and crankshaft as well as sharp corners rounding.
High-pressure water jet deburring
This is the method of using the instantaneous impact of water to remove burrs and flying edges and can achieve the purpose of cleaning.
This equipment is very expensive, mainly used in the heart of the car and the hydraulic control system of engineering machinery.
The propagation of ultrasound can also produce instantaneous pressure, which can be used to remove burrs from parts.
This method is of high precision and is mainly used to remove microscopic burrs that can only be observed through a microscope.