All materials have a certain useful life, which can vary due to external factors. Climate, chemicals and temperature are some of the factors that affect materials, and the alteration of matter can end in its transformation or total damage. However, there are different tools that stop these processes, restore or serve to polish these surfaces. The emery It is a useful mineral for recovering, polishing and tarnishing various types of materials.
Over time, surfaces can warp, but proper grinding will remove the blemish. A good grinder is capable of stopping or limiting progressive deformation in any material. The emery It is a device in the shape of saucers, made up of elements that act abrasively until irregularities are eliminated.
This is the most popular and effective method for treating glass and metals. Neat finishes and long-lasting repairs are achieved. But grinding different types of surfaces implies knowledge about the process according to the material and what you want to achieve. If it is metals, they shine. The crystals tarnish and the irons, like the tools, are sharpened or given a new shape.
Grinding characteristics on any surface
According to the application to be carried out with the emery, different results can be obtained. However, its components and particularities act with the same effect on different surfaces.
The main function of emery is to remove deformed material or level uneven surfaces through its fixed abrasive particles and high speed of rotation. The frosted can be applied to soft and hard metals, glass, ceramics and silica, producing fine surface finishes on these. The margin of error of this technique is minimal, so with the grinding it aims to perfection.
The components of the grinding wheels They vary, but are commonly composed of aluminum oxide, silicon carbide, diamond, magnetite, and rutile. The union of these abrasive materials add properties of resistance, toughness and hardness to the grinding procedure. Each element is incorporated with each other to a certain extent in grains. The size of these grains defines the quality of the surface finish.
Grinding process on various surfaces
Grinding has two procedures: first, flat grinding, and second, fine grinding.
First of all, with the flat grinding deformations are restored and the entire surface is achieved with a similar finish. During this step, large irregularities are eliminated, and a suitable surface is left to carry out the fine grinding. To achieve this, cutting abrasive grains are used pressed by composite material discs that act hard and forcefully on the surface. These grains are generally large so that a great uniformity is achieved.
Second, the fine grinding It is the second part of the process carried out by experts. The grinder travels over the surface with such negligible deformation that it can be repaired with the polished. The procedure is performed with special component hard drives. These grains have sizes of 15, 9 and 6 µm. The effect that is produced is that of a very flat surface, after having removed all the uneven material.
How to grind crystals?
The objective of grind glass is to make them less translucent, to the point of not allowing it to be seen through the glass. With this, the luminosity that passes through them is not lost. The emery It is characterized by being hard, and when using the powder and mixing with other minerals, it becomes a abrasive capable of scratching glass.
Tools and methods for grinding glass
In industry, frosted on glass It is used to dull the glass and to decorate it. It is applied on glass doors and windows, and they are polished in an aesthetic way. To achieve this there are several modalities; one of the simplest and most manual requires the following:
- Emery powders.
- Tinplate sheets.
With this modality, the glass rests on a flat surface horizontally. Then sprinkle the emery and pour the water on the glass evenly. Thus a pasty material is formed on which the tin plate slides with circular movements. This procedure ends with washing the glass with soap and water.
However, in the industrial field there are more advanced techniques in which other tools. On the one hand, there are tarnishes that are obtained through a frosted film, specially created to provide the effect. This is a self-adhesive sheet that is applied to the surface and subsequently removed, leaving the glass frosted.
On the other hand, grinding is also applied to smooth glass surfaces that have some part of their material altered. For this they apply the flat grinding and fine grinding. Both professional processes are carried out in large industries.
Also, for smaller glass surfaces and decorative finishes, use hydrofluoric acid and plastic insoles with the motifs or motifs of the ornament. This modality is practiced to record very specific details on windows, doors and smaller objects, such as crystal glasses.
Step by step for decorative finishes
In a few steps and with great ease it is possible to decorate any object in the desired way. The procedure for decorating small glass objects is carried out as follows:
- Clean the glass surface with alcohol.
- Fix the template that you want to use in the area to be decorated.
- Spread the hydrofluoric acid with the help of a brush. Leave it to act for a few minutes (the time varies according to the manufacturer).
- Remove the template and wash the object to remove the product with water.
How to grind metal surfaces?
For grind metals a grinding machine. Depending on the finish to be obtained, various acids and abrasive materials are applied. Metals are generally polished after frosted, with the application of solvents and chemicals, so it is also required to take precautionary measures.
Grinding metal involves risks, because the impact of machine components with the surface generates high temperatures and sparks. Workers, who perform metal grinding with special apparatus, must wear special protective suits.
First of all, they are used protective gloves so as not to expose your hands directly to heat. Likewise, it is essential to use goggles and safety masks, to prevent eye and face contact with sparks or splashes of substances during the process.
On the other hand, the use of protective creams against exposure to chemical substances is recommended, as well as respiratory protection against emery powders or other strong products. Noises caused by tarnishing can also be a bit hazardous to your ears, so it is also suggested to equip yourself with hearing protectors.
Grinding different surfaces requires care and experience. The best results are achieved in the hands of experts. For use a grinder It is necessary to have prior knowledge and take the indicated measures to prevent accidents. In the industry are the tools suitable for perfect finishes.