Hydraulic manifold ‘burrs’ are generated when the hydraulic valve block is cut out of the feed during the drilling process. The shape and size of the burr is related to spindle speed, drilling feed, workpiece material, tool clamping rigidity, coolant, drill geometry and other factors. ‘If not thoroughly cleaned and removed, the burr will have unpredictable effects and consequences on the hydraulic system. There are various ways to remove ‘burrs’, and there is always one for you.
Deburring by manual method
Workers manually use files, sandpaper, grinding head and other tools to polish the workpiece to remove the burr process. This method does not require high levels of worker skill, and it applies to small burrs and products with simple structures. Generally, enterprises use this deburring method. File is divided into manual file and pneumatic file two kinds. The cost of manual filing is more expensive, the deburring efficiency is not very high, and it is difficult to remove the complex cross-holes, and it requires workers to be serious and careful.
Deburring by punch and die method
Deburring is carried out by means of a die making process with a press. The die method of deburring requires rough and fine punching dies, and some also need to make shaping dies. It is suitable for products with simple parting surface, and the efficiency and effect of deburring is better than manual method.
Deburring by abrasive flow
Abrasive flow method deburring is through the hydraulic system, extrusion of soft abrasive, after entering the soft abrasive hydraulic valve hole flow from other sources, continue to grind, so as to achieve deburring, polishing effect.
Freezing method of deburring
Freezing method of deburring is the use of a sudden drop in temperature to make the burr quickly embrittled, and then spray polymer projectiles to remove the burr method. The freezing method of deburring is suitable for workpieces with small burr wall thickness and small products. The entire set of equipment is complex and has a higher cost.
Deburring by Thermal Explosion
Thermal explosion method of deburring is a method of removing burrs by burning the burrs into oxidised metal powder through the release of energy from methane combustion. The equipment required for this method is expensive and requires a high level of operating skill. Deburring efficiency is low, but also cause rust, deformation and other side effects. Hot blast deburring mainly targets high-precision parts, such as those used in the automotive and aerospace industries.
Engraving machine method deburring
The engraving machine method removes burrs on workpieces. This set of equipment is of moderate cost. It is suitable for removing burrs from workpieces with simple spatial structures, simple locations, and regularity.
Chemical deburring
The chemical deburring method uses chemical reactions between components and chemical agents to transfer burrs on the surface of metal parts into the solution in the form of ions. It is suitable for those difficult to remove the internal burr, especially suitable for removing the pump body, valve body and other products on the fine burr.
Electrolytic deburring
Electrolytic deburring is a method of removing burrs from metal parts using electrolysis. This method brings certain side effects. The electrolyte is corrosive, so the burrs nearby will also undergo electrolysis. As a result, the surface will lose its luster and may even affect dimensional accuracy. Therefore, the workpiece should be cleaned and rust-proofed after electrolytic deburring. This method is suitable for removing burrs from cross holes in hidden parts of the parts or parts with complex shapes, with high production efficiency. It is suitable for deburring gears, connecting rods, valve bodies and crankshaft oil line orifices, as well as chamfering sharp corners.
High-pressure water jet deburring
High-pressure water jetting deburring is a method of removing burrs and flying edges using the instantaneous impact of water. At the same time, it can also achieve the purpose of cleaning. This set of equipment is more expensive. It mainly serves the heart of the car and the hydraulic control systems of construction machinery.
Ultrasonic deburring
The ultrasonic method of deburring uses the propagation of ultrasound waves to generate instantaneous high pressures, which remove burrs from parts. This method removes microscopic burrs that only a microscope can observe with high accuracy.
Hydraulic manifolds have various types of burrs. Completely removing these burrs is not an easy task. One needs to continue accumulating experience. Using a variety of methods in conjunction can achieve better results with less effort. This approach helps successfully address the problem.
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