Impact-free drilling of concrete. Drilling concrete

It is impossible to provide all the holes and niches in the walls during the construction of the room. Therefore, after erecting a monolith, you have to drill it.

The most common construction material is concrete. The technique for making holes in this material differs from processing wood, brick and metal.

Drilling concrete - pitfalls

Concrete produces a lot of dust when processed. It is harmful to the respiratory system In addition, abrasive particles become clogged in the ventilation holes of the tool. Cooling becomes difficult, and dust trapped inside contributes to accelerated wear. It is necessary to use devices to capture suspended matter. There are special attachments for vacuum cleaners, sometimes it’s enough just to replace the container.
The structure of concrete does not form chips, so removing material from a deep hole is difficult. In order not to overload the drill, it is necessary to periodically (every 3-5 cm of passes) clean the hole with a vacuum cleaner. When working in a hole clogged with sludge, you can break the drill.
The abrasive components of concrete contribute to strong heating from friction. The metal of the drill is “relaxed”, loses its hardness and quickly wears off. Therefore, it is advisable to provide liquid cooling, or at least take breaks during prolonged drilling.
Power tools for drilling concrete (drills, hammer drills) have considerable weight. It is difficult to control the horizontal level. Therefore, when performing such work, it is recommended to equip the tool body with a small bubble level.
Concrete is a heterogeneous material. There are hard stones in the thickness of the wall, steel reinforcement. When it hits such an obstacle, the drill tends to leave the trajectory. If you hit rebar- you should choose a different location for the hole or go through the area using a metal drill. Then continue working again with the same nozzle.
Walls are usually thicker. The drill bit may not be long enough. If you do through hole, you can go through it from both sides. If possible, make precise markings, or determine the drilling point on the other side using a magnet and a compass.

The renovation process in an apartment includes a lot of work related to creating holes in the walls: a tool can be used for this various designs and power. Many craftsmen and those who are planning to carry out repairs themselves want to know how to drill concrete wall with a regular drill and is it even possible? For such work, a hammer drill is usually used, but it is not always suitable for this; moreover, if you have to buy a tool, then its cost is much higher than that of a drill.

Features of choosing a tool

In most cases, it is better to use a hammer drill: it has increased power, is designed for punching hard surfaces, and allows you to make large-diameter holes. The use of the tool is inappropriate in the following cases:

the need to drill the wall to a depth of 10-12 mm;
working with, which crumbles when processed with a hammer drill;
the work requires making no more than 10-15 holes.

Before drilling a wall, it is important to choose the drill itself: it should not be impactless, since this type is ineffective when drilling concrete; the attachment and chuck almost immediately become unusable. The nozzles themselves must be victorious, designed for concrete works, tip - with carbide coating.

In some cases a good decision will purchase a hammer drill: the device is more expensive classic model, but has increased power, which can be adjusted.

Which attachments to choose?

Before drilling a hole in a concrete wall, you need to select a nozzle of the appropriate design. The following types are used for work:

Impact-type toothed bits designed for drilling. When working with concrete, it is recommended to use varieties made from individual soldering teeth, made from the most durable metal alloys. Many bits are equipped with SDS tails for installation in a drill with keyless chuck. Drills are well suited for concrete walls, however, they can begin to break down upon contact with metal, so before drilling reinforced concrete wall, you need to check that there is no reinforcement used for reinforcement at the place of work.
Diamond bits, which are designed for hammerless drilling of holes. Such nozzles are more modern; with their help, it is easier to make a hole in a concrete wall. The edge of the crowns has an abrasive structure and special cutouts; during production it is processed by spraying diamond chips or corundum. Before making a hole in the wall, you only need to select the desired length of the nozzle: in everyday life, varieties with a diameter of up to 100-120 mm are used, in professional work larger crowns are used. Distinctive feature is the ability to drill without the risk of damaging the fixture with fittings.
KS crowns that have cutting edge with crystalline diamond particles. Such nozzles are used for most solid walls, including drilling into concrete slabs, external walls and stone structures.

Before drilling or partitioning, you need to make sure that wires or cables, if any, will not be touched during the work.

How to drill concrete with a drill?

Usually similar works are performed in the following cases:

rough finishing of premises;
installation of built-in furniture and appliances;
installation of wiring and plumbing when communications need to be concreted.

When using a Pobedit nozzle during work, it is necessary from time to time to use a metal punch, which is selected to match the size of the hole being formed. This tool allows the drill not to jam when the drill is deeply immersed: the punch is placed in the concrete and deepened with hammer blows to make a hole in the wall, destroying the seal.

This process is quite long; an alternative is to use diamond bits: a drill equipped with such attachments will not get stuck in concrete.

Algorithm of actions:

Before drilling a hole in the wall, you need to install the desired nozzle, after making sure that the tool is in good working order and the drill is intact.
Drilling concrete must be done carefully; when using low-power equipment, the duration of continuous operation of the drill should not be more than 10-12 minutes. If drilling takes a long time, you need to take breaks so that the device’s motor cools down.
Once it has become clear to drill a concrete wall, it is also worth considering that for each new hole it is necessary to process the nozzle. You can moisten the surface with water to facilitate the procedure and protect the metal from deformation.

The whole process of work can be seen in the video:

If you encounter a stuck drill, do not remove it by force: this will lead to the device breaking off, resulting in the tip remaining in the concrete. You need to disconnect the nozzle, select a crown of reduced diameter and use it to pull out the stuck element.

Before deciding what to drill into concrete walls and starting work, you should pay attention to the following recommendations:

if the hole diameter exceeds 12 mm and the depth is 10-11 cm, it is better to use a hammer drill or a hybrid device (drill-hammer);
if holes are made for plastic dowels, the depth should be 7-10 mm greater than the size of the fastening element, since concrete dust and small particles of stone remain inside;
It is recommended to start work at low speeds so that the nozzle does not move due to increased torque, and the impact mode is turned on when the drill passes 2-4 mm in depth;
dust that appears during the drilling process can be removed with a vacuum cleaner; it is advisable to do this during the process, periodically stopping the drill and cleaning the hole from concrete particles;
Be sure to follow safety precautions during work: you need to wear gloves to eliminate the risk of the handle slipping and safety glasses to prevent crumbs from getting into your eyes and damaging the mucous membranes.

In most cases, a concrete wall is drilled with a hammer drill, without a drill. If, as part of the repair, you need to make no more than 15-20 holes or the wall is made of foam concrete, using a drill is optimal choice which will save time and money.

Before punching a hole, you need to make sure that there is no wiring in this place, and check whether the attachment is suitable for such work (the duration and efficiency of the work depends on what kind of drill the drill is equipped with). When deciding how to drill a wall, you should pay attention to pobedite bits: with such a drill using a drill, you can easily make a hole up to 10-12 cm deep.

Almost all modern buildings are built from concrete slabs, so very often repairmen and home craftsmen are faced with the problem of drilling a concrete wall. Breaking through a wall made of this material, even with a Victory drill, is not an easy task, since its design includes reinforcement and stones.

Laser electric drill diagram: 1 – Vertical level, 2 – Angular level, 3 – Horizontal level, 4 – Electric drill.

To do this, you need to understand the tool used and have step by step instructions, which will greatly facilitate the process of drilling holes in concrete.
Tools for work

Concrete is excellent construction material, which has increased strength and durability, but the presence of such properties causes certain difficulties in working with it. Need for fastening suspended ceiling or installing an outlet in a room requires drilling into a concrete wall, which is fraught with certain difficulties. Before drilling a wall, you will need to decide on the size of the desired hole and only then begin to select a tool. The depth and diameter of the hole, as well as the presence of reinforcement in the concrete wall, determines the drilling method.

Cutting attachments

The shape of the attachment is designed to meet safety standards and allows for easy drilling in autoclaved concrete.

You can pierce a concrete wall with special nozzles, which differ in shape, size of the working part and type of shank. Drills and drills are used to drill holes with small and medium diameters. The rod of such nozzles has a screw shape and a carbide tip. For impact drills, drill shanks have cylindrical shape With smooth surface. And in rotary hammers they can be made in accordance with the SDS standard. During use, the cutting tool requires sharpening. But it should be taken into account that Pobedit drills do not tolerate overheating well and very often break. Therefore, this process is always accompanied by cooling the drill with a special liquid.
To make a hole big size in concrete, crowns are used. This cutting tool is a hollow cylinder into which the cut material (core) is moved. Its working part can be equipped with carbide cutting segments or diamond cutting edges.

For impact drilling using a hammer drill, a crown with carbide teeth is used. The diamond-coated working part is primarily used for non-impact drilling with coolant. This tool is quite wear-resistant, but in any case it requires restoration after some time. If the integrity of the body is not compromised, then a carbide or diamond segment is soldered onto the working surface of the crown. If you need to drill a hole, it is relatively easy large diameter, the instrument can be held in the hands. But for drilling larger holes, a professional installation is attached to the wall with anchors.
Drilling tool

You can make a hole in concrete with an impact drill. But a hammer drill is best suited for such purposes. Such a tool will be effective when drilling holes with a diameter of about 100 mm. However, it must be taken into account that those encountered along the way cutting tool the reinforcing metal can jam it and break the teeth. Jagged crowns are especially susceptible to this. Therefore, before work, you will need to study the characteristics of the drilling tool and, in accordance with the properties of the material, select it. If it is not possible to work with a hammer drill, it can be replaced with an impact drill. It is, of course, less efficient and has some drilling features. But if there is a small amount of work to be done, then you can limit yourself to it.

To drill a hole in concrete of large diameter and with frequently occurring reinforcement, the diamond drilling method is used with a special non-impact power tool that has a water supply to the drilling area.

Drilling process

Drill or hammer drill

There are two ways to make a hole in a concrete wall: use a drill with an impact function or a hammer drill. The first is used when it is intended to drill a hole to a shallow depth. As for the hammer drill, it is a more powerful tool and its drilling speed is much higher. In this case, there is no need to use pressure during drilling. The methods of working with a drill and a hammer drill are similar.

It is necessary to drill a concrete wall in the following sequence:

First of all, you will need to determine the location of the electrical wiring. Without completing this condition, the master may receive an electric shock.

Mark drilling locations. In this case, the master must have a comfortable and stable position. The drilling process is accompanied by a large amount of dust, so when working, your eyes must be protected with special glasses.

Prepare the tool and make a mark on the wall with a drill having a standard sharpening. This nuance will help you make the right start.

Use a punch to break the stones. This is a drill that is not difficult to find in a construction kit and its price is significantly lower than for a cutting one.

The technician needs to monitor the temperature of the drill and cool it with water every 10 minutes.

During the drilling process, the tool may encounter reinforcement or stones. This can be understood by the characteristic whistle and ringing (fittings). In addition, the drilling speed may drop significantly (stone). A punch is used to break the stone. To cut reinforcing metal, you need to change the Pobedit drill to a regular one designed for cutting metal.

During operation, every 1.5 cm the drill must be pulled out a little from the hole without turning off the tool itself. This will allow the accumulated concrete chips to come out and gently approach the reinforcement.

To reduce dust formation, you can make a funnel out of transparent polyethylene film, which fits directly onto a drill or hammer drill.

Drill a large diameter hole in the wall for an outlet, distribution box, or make ventilation duct possible in several ways. The first is to make several small-diameter holes along the marked contour, after which the concrete is knocked out with a chisel. But work in in this case will be sloppy because the edges will not be even enough.

Therefore, punching a hole in concrete better with a crown, which must be selected according to the desired size. To extend its service life, you can first use the first method, and then walk along the hollowed out hole with a crown.

Diamond drilling

Diamond drilling has a serious advantage over other methods. High precision of execution, efficiency, low noise and vibration levels allow this technology to become quite popular.

The hole making process can be carried out in different directions: in horizontal, vertical planes, and also at an angle. The maximum drilling depth can reach up to 2 meters, and the hole diameter can be up to 500 mm. In this case, the drilling speed ranges from 1...6 cm/min.

Diamond drilling technology is carried out using special equipment using diamond ring bits. To do this, a diamond drilling unit located on a special frame is fixed to work surface anchor fastening system or vacuum plate. This installation method can significantly facilitate the drilling process and increase the accuracy of the cut holes.

The installation begins with unwinding annular crown at high speed, while water is supplied using a pump to work area. The liquid is necessary for cooling and removing drilling products from the cutting tool. At the end of the process, the hole is smooth, with neat edges.

I would also like to note that the cost of new equipment or its rental is quite high. But when professional use With a special diamond installation, the costs are recouped by the accuracy of the work performed, high speed and silence. In addition, the lack additional processing holes and exhausting room cleaning are a significant plus for its use.

Drilling in concrete is very difficult, as anyone who has had to deal with a similar problem will tell you. To adequately overcome the resistance of a resistant material, you need to know some of the features of concrete drilling, plus be able to apply knowledge in practice. So, let's find out how to get out of the situation without any problems.

Which drill to drill concrete

To drill a concrete wall, craftsmen use drills with a Pobedit tip.

A simple drill will not cope with such a task. If you need to make a small hole (less than 13 mm in diameter), then a drill is used, and in other cases, a hammer drill. It is significantly more productive than a drill due to the presence of a device with an impact function and a higher drilling speed. When a hammer drill is not at hand, then a regular drill with a drill made of hard alloy with asymmetric sharpening will do.

Before starting work, it is necessary to mark the drilling location with a core. It is also advisable to minimize the spread of dust throughout the room by attaching a simple device to the hammer drill chuck - a cap made of tin can. Most of the dust will settle there. In order for the plastic dowel to fit fully into the hole made, experts recommend making the recess a centimeter longer than the size of the fastening element itself.

During rotation in concrete, the drill heats up due to friction, which leads to a decrease in its working properties, so the drill is periodically moistened in machine oil or ordinary water.

For high-quality drilling, it is preferable to choose a tool equipped with building level. If such a thing is not provided in the hammer drill, it doesn’t matter; an ordinary small level secured to the body with electrical tape will do.

It happens that you need to drill through concrete, but the drill at hand is too short. Then with inside drilled blind hole along the entire length of the existing drill, and a magnet is placed in the resulting socket. WITH reverse side Using another magnet, the location of the first one is determined and drilled at the intended point.

If metal reinforcement interferes with drilling, then change the concrete drill to one that is designed for working with metal. After which they continue with the same drill.

Before drilling into a concrete wall, you should make sure that penetration into the material will not damage any communications.

Using a hammer drill to make holes is considered obsolete. However, for small volumes of work it is indispensable due to its affordability. It is used for drilling by impact or in the usual way. But this method has a significant drawback: during operation, vibrations that inevitably arise from the “slotting” of the tool lead to unwanted defects in the finish. And if, in addition, the hammer drill is very powerful, then the consequences of the actions for the structure are simply unpredictable. To reduce vibrations, new modifications of modern rotary hammers have been developed.

Nowadays, diamond drilling equipment is used more often, especially in large-scale construction - the holes in concrete are smooth and clear, while the drilling machine creates virtually no noise and produces almost no dust and debris. The non-impact method does not cause chips, and it is also possible to avoid the formation of cracks in concrete. And the main advantage of diamond drilling is that in addition to quickly drilling through concrete, it can easily cope with reinforcement.

For making holes in thin concrete partitions They use a punch: it is made from an 8-millimeter drill, the end of which is sharpened into a “swallow’s tail.” The drill needs to be turned and hit with a hammer.

When drilling in ceiling To prevent concrete crumbs from falling into your eyes, it is recommended to attach a protective funnel to the tool.

To secure the screw in concrete, a piece of nylon is driven into the hole. Then they lightly melt it with hot metal (nail), after which the screw is screwed in. The nylon hardens and holds the mount firmly.

A piece of copper or aluminum tube can serve as a substitute for a dowel. It is crimped to the required size, inserted into the hole and screwed.

Sometimes when doing finishing works there is a need to make a hole in the wall, for example, to secure metal profile when installing drywall. If the wall is concrete, then this procedure can cause certain difficulties, since this material has high strength, has a heterogeneous structure and contains metal fittings. Next we will look at how this problem can be solved.

Necessary tool

Due to the nature of concrete, drilling it will require special tool :

(impact drill) – provides rotational and translational movement of the drill.
Concrete drills For impact drill, made of hard alloys. Their shank and screw part are made of tool steel, and the cutting working area is a plate of carbide metal sharpened at 60 degrees, which is sealed into the groove of the cutting part of the tool.
(needed when drilling with a conventional drill).

It must be said that it is possible to cope with the task with a tool without a striking function. Below we will take a closer look at how to drill through a concrete wall with a drill.

Drilling procedure with a hammer drill

The procedure for drilling a wall using a hammer drill and a special drill is quite simple:

The concrete drill should be switched to hammer drilling mode and the operation should begin. The drill should be positioned strictly at an angle of 90 degrees with respect to the wall, unless drilling is specifically performed at a certain angle.

After some time, the drill needs to be moistened in cold water and continue working.
If the tool rests on something hard and stops going deeper, you will have to try to drill the wall in another place.
Once the desired immersion depth has been reached, you should pull out the drill without turning off the drill. To clean the hole from dust, you need to deepen and pull out the drill several more times.

This completes the procedure.

Advice!
A hammer drill can be used for more than just drilling hard materials.
There are special attachments that turn this tool into a mixer.
Thanks to them, a drill-mixer for concrete does an excellent job of stirring the solution.

Drilling

Many home craftsmen doubt whether it is possible to drill concrete with a drill? Of course, this procedure will take much longer than when working with a hammer drill, however, it is quite possible to make a hole.

To perform this operation you will need a special punch. This tool is a rod with a pointed hard end. It is used to break up the surface in the drilling area.

Instructions for performing this work are as follows:

First of all, you need to place a punch at the place where the future hole will be located and hit it several times with a hammer.
Then, a drill is inserted into the resulting funnel and a hole is drilled. As when working with a hammer drill, you need to ensure that the tool does not overheat.
If the drill stops going deep, you need to use the punch again - insert it into the hole and hit it hard with a hammer several times.
Drilling is carried out in this way until the desired hole depth is reached.

Advice!
Often there is a need to cut concrete, in which case a grinder is used.
However, it should be borne in mind that reinforced concrete is cut with diamond wheels.

As a result, although a conventional drill is not suitable for concrete, in the absence of a hammer drill, it can also be used to drill a reinforced concrete wall.

In the photo - working with a punch

Advice!
A drill can be used not only to make holes, but also used for several other purposes.
For example, on our portal you can learn how to make a vibrator for concrete with your own hands from a drill.

This technology involves the use of special equipment, which is a set of the following elements:

Electric motor;
A stand that is fixed to the base;
Core drills.

With this design, water is supplied directly to the drill to cool the tool. Therefore there is no need to interrupt the process. In addition, water washes away dust, so it does not have time to get into the surrounding space. Often, such an installation includes a water vacuum cleaner, which allows you to remove a mixture of water and dust from the surface.

Of course, it makes sense to use diamond drilling of holes in concrete only for industrial purposes, where it is necessary to perform a large number of holes, especially large diameter ones. The equipment is unlikely to be useful for domestic purposes.

In addition, the price of the kit, like any other professional tool, quite high. Therefore, if you need, for example, to fix a shelf on the wall, it is more advisable to use a hammer drill. (See also article.)

Conclusion

With a reasonable approach, making a hole in concrete will not be difficult. The most important thing is to use the right equipment for this and follow a certain order actions. In addition, of course, it is necessary to follow safety precautions so that the work does not end in injury.

From the video in this article you can glean Additional information on this topic.