What’s the surface finishing by vibration processes?
The surface treatments by vibration are used to obtain on the pieces that we are going to treat a polished finish, deburring, polishing…
The vibratory processes of surface treatment are inspired by the situations that occur continuously in nature, after man’s observation of the flow of rivers and the erosion that the water produced in the stones and seeing how the continuous movement of the sea turned the small rocks into perfectly polished pebbles, we looked for a way to find a process that could perform this work artificially.
In order to achieve the same effect, vibration polishing processes were developed, for which they are necessary:
– Special abrasives for vibration processes (ceramic chips, polyester chips, porcelain…)
– Specific chemical compounds or pastes to add to the process.
– Specific machinery to perform the vibration process, which will keep the chips and parts in motion imitating the erosion process that we observe in nature.
The result that we’ll obtain in the treated surface will depend on the composition and the size of the abrasive, the chemical compounds or pastes that we add to the process and the times of vibration we will use for the it. Also we need to choose the adjustments of speed and power and the cycles to realize.
The parts to be treated (polishing, deburring, polishing…) are added to the vibrator that we’re going to use in the process together with the chosen abrasive for that process and the chemical compounds required. At that moment we will start the vibration treatment.
How to choose the most suitable abrasive?
The choice of the abrasive is one of the most important parts in order both, the vibration process and the result, could get will be the right ones.
We choose the abrasive chips according to several essential parameters in order to reach the results we need.
What we want to achieve with the vibrating process(deburring, polishing …) and the material of any part, may define the chip abrasiveness we must look for (greater or smaller cut, higher or lower polished effect…); for example we’ll see that for pieces manufactured by harder materials such as hardened steel or zirconium, we will choose chips with more cut, meanwhile for materials such as brass or zamak we will choose chips with a lower cut.
The size and shape of the selected chips will be given by the size and shape of the pieces to vibrate.
The choice of equipment will also be determined by the result we want to obtain in the pieces to vibrate, the size of them and the amount of material to vibrate in each process. In the attached link you will find the range of vibrators that we commercialize.
Some tips for choosing the right abrasive are:
Choose the largest chip possible, allowing the chips to “touch” all areas to be treated. As larger was the chips, more powerful they’ll work; therefore, they will be more effective at removing some tough burrs and reducing cycle time.
Keep in mind that abrasives have a rate of wear due to their abrasiveness but also to the to the force we’ve been choosing on the vibrator.
How to choose the necessary chemical compound?
Many times we underestimate the role that chemicals have in the vibration process.
Some of their most obvious functions, although not the only ones, are to degrease surfaces or to protect them from corrosion. For example, by choosing the right chemicals or the right pastes, we can make the same parts glossy or matt.
The chemical compounds are chosen taking into account the following parameters:
– Results we want to achieve with the vibration process (deburring, polishing, polishing, degreasing, passivation …)
– From what material are the parts to be vibrated made?
– Type of vibrator we have and/or are going to use
– Water quality
The vast majority of chemical compounds are liquids, although they are also in powder or paste form.
Main industrial sectors for the application of vibratory processes:
Vibration processes allow us to degrease, deburr and polish cast iron parts, presses, machining of metallic and non-metallic automotive parts.
It’s the preferred option we can choose for degreasing, deburring and polishing cast iron parts, presses, machining of metallic and non-metallic parts for the Defence Industry.
Also widely used for degreasing, deburring, cleaning, drying and polishing bullets and cartridges.
Vibration processes are essential in the medical industry for degreasing, deburring, and polishing all types of materials and instruments intended for use by the medical profession.
Used especially in the aerospace industry for finishing and polishing parts before final assembly.
Given the delicate work that can be obtained with, for example, porcelain chips, are the ideal chips for polishing small pieces of jewellery.
Vibration processes are also used in all types of companies involved in the manufacture of handles, cutlery and costume jewellery.