Sandblasting: characteristic and how to use

The surface purification with sandblasting is called sandblasting. The principle of operation of this method of cleaning is the supply of sand to the surface with compressed air. Thus, it is cleaned and polished. We will consider further about the features of the use of sandblasting sand and equipment.

Table of contents:

1. Sand for sandblasting: Scope of use
2. Materials for working with sandblasting sand
3. Functional purpose and features of sandblasting cleaning
4. Sandblasting sand consumption and advantage of execution
5. Sandbrown processing with quartz sand: Technology of execution
6. Sand for sandblasting: use and features

Sand for sandblasting: Scope of use

The method of sandblasting surface processing is used if it must be prepared for processing by compositions of anti -corrosion or antiseptic effects. In addition, before applying decorative coatings, it is also recommended to process the surface with sandblasting equipment.

The use of this cleaning method allows you to get rid of rust or old paintwork. In addition, in this way it is possible to matting glass, apply inscription on its surface or create a decorative pattern. Also, sand for sandblasting allows you to create an additional surface texture, degrease it or give it a decorative appearance.

The use of sandblasting equipment in construction is determined primarily by the creation of rough surfaces. This technology allows you to clean the brickwork or make a wooden surface more worn. The use of sandblasting extends the duration of the operation of these materials several times.

The scope of the use of sandblasting is unlimited, this method is used in machine -building, decoration, metallurgy, reinforcing industries.

Materials for working with sandblasting sand

There are several options for equipment designed to perform sandblasting. They differ among themselves in the degree of complexity of the mechanism that performs this processing.

The most difficult device is the sandblasting camera. It is used if you need to clean too much product. There are two options for such cameras:

• inhabited type;
• uninhabited type.

The first option allows you to process large -sized elements in the industries of metallurgy and railway sphere. Inside such a camera, one of the employees may be, observing the process and controlling it. These cameras are also called container. They are of different sizes, in relation to the overall details that are processed.

Uninhabited sandblasting cameras have the appearance of boxes that have an opening of the hands and a window in it, with which the cleaning process is controlled. In this case, there is no way to hire additional personnel for staying in the cell. All work is carried out automatically. Sandbrown chambers resemble an injector, to ensure their performance, compressed air is necessary, which is previously cleaned of the content of oils.

Sandbrown pistol sand is equipment with which manual mode is cleaned with sand. The scope of its use is most often limited to the construction and automobile industry.

The sandblasting device consists of:

• source supplying compressed air;
• containers in which sand is located;
• the handles, which are based on high -strength material;
• The hose or tube that connect all the components into a single design.

In addition, the device has a nozzle, spraying sand. There are several options for the nozzle depending on their diameter. The choice of this or that nozzle is based on the purpose of sandblasting. The minimum nozzle diameter will help to engage in engraving, and the maximum will clean the surface of rust.

The principle of operation of the apparatus is that after its inclusion, compressed air is mixed together, while the excretion of sand under pressure is obtained. With the help of kinetic energy of sand, removal is removed from the surface of paints and rust.

There is another option to use open installations for sandblasting. With their help, large elements are cleaned, such as facades of houses. This device contains a sand capacity and a hose for its spraying.

Functional purpose and features of sandblasting cleaning

Sandbrown cleaning is the surface processing of sand, as a result of which it acquires a certain texture. There are several degrees of surface cleaning. If we consider steel products, we select the four stages of their cleaning using sandblasting equipment:

• acquisition of the effect of cleaning with a metal brush;
• standard cleaning when mirror shine is not present on the surface;
• average degree of cleaning;
• A complete gloss of the surface, as a result of its cleaning.

The degree of cleaning of the product depends on many factors, such as the preliminary coating of the product before cleaning, the diameter of the nozzle used in the process of work, the type of sand.

If necessary, sandblasting is also used in matting glass surfaces. In addition, with help. Pescocrubal cleaning is cleaned by plastic parts. Latations on concrete surfaces are easily removed with sand.

The processing process of sandblasting sands performs two functions. Firstly, it makes the surface more clean, and secondly-gives it the texture. This effect can be achieved due to the fact that abrasive particles not only fall on the surface, but also eaten into it. In relation to the type of abrasive sand and its size, the surface acquires a certain texture. After that, steel surfaces are characterized by high adhesion with any of the types of paintwork or primer.

That is, sandblasting steel surfaces allows you to increase the duration of their operation by more than 5 times. Since after processing the metal, its surface is very firmly adversely adopted with anti -corrosion compositions.

However, the duration of the operation of steel products increases only if their sandblasting processing was technologically correctly performed. Steel details should be completely cleaned of dirt, corrosion, rolling scale, paints and other paints and varnishes.

Sandblasting sand consumption and advantage of execution

We offer to familiarize yourself with the main advantages of sandblasting with metal or concrete products. Using this technology, it is possible to quickly and efficiently resume steel products or facades of buildings before staining them. There are several degrees of cleaning products, the choice of one or another is justified by the desired end result and further actions in relation to the object that is subjected to sandblasting.

Using sandblasting, it is possible not only to clean the surface, but also to degrease them. Removing oil spots from facade surfaces allows for their high -quality staining.

Among the advantages of sandblasting, we select:

• an increase in the life of elements subject to cleaning with sandblasting;
• ease of work;
• accessibility of materials;
• speed of cleaning;
• The ability to use on various surfaces: wood, concrete, metal, glass;
• The cost of equipment for sandblasting is quite affordable;
• The possibility of additional surface decoration, for example, creating matte glass, engraving.

At the same time, the variety of sandblasting devices allows you to perform work on various kinds of areas. There are different equipment with which cleaning is performed. With the help of sandblasting, even cleaning of the car discs is performed and an additional shine is given to them. In this case, a special camera is used to perform work. Next, work is carried out on additional cleaning of discs from the primer and varnish or paint.

Sandbrown processing with quartz sand: Technology of execution

Before starting work, a person who will perform sandblasting the device should study the technological map. It indicates all the technological characteristics of the device and the level of its possible processing. We offer to get acquainted with the example of the technological map for the facade - instructions of sand from sandblasting devices:

• When performing the facade cleaning using sandblasting equipment, a dry abrasive mixture is used, the supply of which is carried out using special equipment of the open type;
• Sand for sandblasting in the bags should differ in moderate humidity, no more than two percent, while the size of the holes for the passage of sand should not exceed one millimeter;
• Air supply from the compressor is carried out through a special hose, in a special tank it is connected to sand;
• Keep in mind that the working pressure indicator should not be more than four atmospheres, since there is a risk of damage to the facade surface;
• When cleansing the facades of multi-storey buildings, on the first three floors, a pressure of about 3 atmospheres is used;
• Consider that when sandblasting, the nozzle deformation occurs, therefore, the sand flow rate increases, monitor these characteristics;
• If you do not replace the damaged nozzle, then the pressure is reduced, and, accordingly, a decrease in performance;
• In order to remove dust and sand remaining on the facade, compressed air is used, which is supplied through that very installation.

Sand for sandblasting: use and features

If it is planned to clean the facade using sandblast, then to perform work will need to purchase a special unit or make it yourself. In principle, in the presence of a compressor, it is not difficult to build such an installation. It will also require a hose, nozzle and a cylindrical barrel to mix sand with compressed air.

When buying sandblasting pistols, we recommend that you dwell on German -made products. Although their cost is quite high, it pays off, in the process of work. If it is planned to perform a large amount of work, then a pneumatic machine for facades will be required. Its purchase is relevant if you plan to clean the facades in the future.

With the help of such installations, it is possible to clear not only even, but also relief options for facades. In addition, the device has a slight weight and optimal sizes. Therefore, one, two people are enough for its transportation.

There are many materials used in the process of abrasive cleaning. In addition to ordinary and quartz sand, nuts and other materials that differ in small size are also used. The consumption of air, abrasive substance and water, if available, is controlled directly by a person who performs work individually, depending on the site on which he works.

To increase the work process, work is carried out with the addition of water, which is supplied under a certain pressure. In order to ensure this process, you should bring a regular hose. The maximum value of water consumption in 60 minutes is 125 liters. Thus, it is possible to avoid accumulation of dust in the process of cleaning.

There are such types of surfaces for which more than one abrasive substance is required. In this case, there is a special suction valve, which is installed in one or in another abrasive. However, for better cleaning, it is recommended, if necessary, work again.

Consider that re -use of the material is unacceptable, since the quality of cleaning will be at a low level. Sand consumption for cleaning with sandblasting is from 40 to 250 kg per hour.

Among the structural elements of the standard setting of sandblasting, the presence should be distinguished:

• a gun that has an air nozzle;
• jet nozzles;
• suction valve;
• hose, about five meters long;
• The reservoir in which the device will be stored.

When choosing a device to perform sandblasting cleaning, make sure that it meets all fire safety standards and has such functions with which you can quickly stop its work.

Sanding of sand from treatment and sandblasting devices should be disposed of, since their further use is prohibited. In addition, quartz sand is not recommended for cleaning at all due to a high risk of danger with it.