Drilling holes with crowns on concrete

When carrying out major repairs in apartments or houses with concrete walls, in most cases, they try to completely change the electrical wiring, in which case it is necessary to do without such an important component as the crown for concrete.

It is clear that the new wiring involves the installation and new outlets with switches that require holes of certain sizes for installation.

As you know, concrete is distinguished by its incredible strength, and it is quite difficult to work with it, especially if necessary to make any technological holes.

In order to facilitate the work of the master and speed up the process, if necessary, make technological holes in concrete for various purposes, and a crown for concrete is designed.

This cutting tool works with a drill or perforator. Drilling can be done both in reinforced concrete and in brick.

Drilling is carried out necessarily in compliance with safety regulations and allows you to get even holes for the size of the receptacle.

Currently, you can buy crowns for concrete in almost any specialized store without any problems.

Crown fixing

As you know, concrete has good strength characteristics that make this material popular enough in the construction of residential buildings.

Meanwhile, the high strength of concrete makes it very difficult to work with it.

If necessary, to make technological holes for junkets, the master faces a rather serious problem and the need to use a special tool.

If drilling with a perforator or a drill with a nozzle in the form of an ordinary drill, then you can take a long time and as a result, do nothing.

In this case, you can not do without a special crown for concrete, which has diamond spraying.

In appearance, this cutting tool is a small piece of pipe, the edges of which on one side have cutting segments made entirely of hard-alloy material.

At the time of drilling podrozetnikov these segments and penetrate into the base of concrete.

At the other end of the crown is a special flange, by means of which the crown is fastened to the cylinder of the drill or perforator.

The tool used to drill concrete using a crown must have high power and a sufficiently large diameter of the head itself.

Typically, for drilling holes in concrete, a tool is used, either pneumatically or electrically.

In addition, in addition to the crown for concrete, a special centering drill can be used, which is fixed in the general assembly of the tool and avoids the incorrect course of the main cutting tool.

If the crown will additionally have diamond spraying along the edges of the edge, its durability and cutting ability will increase several times.

For more efficient and quick work, it is necessary to select the crown according to the concrete, proceeding from its type.

Also attention should be paid to the choice of the tool, which must have sufficient power and high reliability.

Types and types of crowns

The drill bit for working with concrete, designed for holes in the juniper, has some design features.

Currently, there are several different types of crowns that have some differences. The most common drill bit is made only from solid-alloy alloy.

Such an alloy on the crown can be observed in the form of a special solder, which determines its strength and durability.

It should be noted that if drilling is performed on reinforced concrete and the crown at some point falls on the armature, such a tap is likely to simply fly out.

In addition to various technical differences, these crowns differ in their cost. It is easiest to work with concrete if you use a tool with diamond coating.

The drill bit, which has a special diamond coating, allows you to quickly and easily make the necessary holes for the juniper with minimal physical effort.

Its distinctive feature is its high cost, but this cutting tool, if necessary, allows cutting through the reinforced sections of the wall.

A more affordable and affordable option is a drilling carbide-tungsten crown.

This cutting tool can be used both for working with concrete bases, and for working with bricks and even ceramic tiles.

The property of such crowns is to drill a variety of types of bases - it allows you to make the necessary work without changing attachments, which is not only convenient, but also economically profitable, since there is no need to purchase an additional tool.

This drill bit has a special design and due to a special hexagonal tail located on its rear side, the required drilling can be carried out with a drill whose power should be at least eight hundred watts.

Compared with diamond, this type of crown is not designed to work with a reinforced concrete base, and if its cutting segments get on the armature, it will simply fail and become useless for further use.

Dimensions of crowns and preparing them for work

Before you go to the store for the crown for the juniper, you need to determine exactly their size and diameter.

If the crown is not purchased correctly, the technical hole made in the concrete wall may be either too large or too small.

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The most common size, which is considered to be a standard, has a diameter of sixty-eight millimeters.

It is under it that most switches and outlets are produced.

However, on sale it is possible to find outlets and switches and with other diameters, and therefore even at the preliminary stage of repair it is necessary to determine exactly what materials will be used and, on this basis, to purchase everything necessary.

Special care must also be taken to prepare the cutting tool for operation.

The crown must be assembled in accordance with the instructions, otherwise serious injuries can occur during operation.

Before starting work, it is recommended that you carefully read the instructions that come with the crown. Assembling the crown begins with the preparation of the winning drill.

It must be inserted into the socket and secured securely with the appropriate bolts. Next, you must strengthen the bowl under the drill bit by thread.

All crown elements should sit tight and do not hang out.

If the assembly is not complete or not quality, then during the work you can break the individual elements of the crown or cause yourself a serious injury.

Drilling process

When the drill bit is fully assembled and tested, you can proceed to the concrete work itself.

Do the main job best with a perforator, and in its absence, you can use a powerful impact drill.

It is not recommended to use an ordinary drill, since in this case the work will be ineffective and it will take a huge amount of time.

To begin with, on a concrete foundation, you need to make certain marks in the specified places, after which the centering bit will be exposed.

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After this, you can proceed to the very drilling of the crown of the base of the wall of concrete. To do this, place the drill on the previously made mark and start drilling.

The tool should be kept as tight and level as possible.

It is mandatory to carry out the work in a respirator and special construction glasses, as many harmful dusts are formed during drilling in space.

At the end of the work with concrete, the cutting tool must be correctly reset.

To start, the nozzle should be given time to ensure that it has completely cooled down, otherwise, when it is dismantled, its cutting solder may simply fall off.

For this, the cutting nozzle is removed from the punch, all cement dust and dirt is removed from it.

Also, pull out its middle part and do it most easily with an ordinary metal chisel or hammer.

Thus, the cutting tip will be prepared for future use.

When choosing a cutting nozzle for working with concrete, it is not worth buying cheap options, for example, in Chinese production.
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Despite its affordable price, in most cases they fail even after drilling the first technological holes in the wall.

Also, when working with a cutting tool, it is mandatory to adhere to the safety requirements.

In spite of the fact that concrete is a sufficiently strong material, it is possible to make necessary technological holes in it with a properly selected special cutting tool without any special efforts in the shortest possible time.