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Show drills for concrete walls. What and how is it better to drill concrete? Which nozzles to choose

The ability to drill holes in concrete is a fairly useful and convenient skill. With it, you can easily hang shelves, hang pictures, install lamps and do a lot more work around the house quickly and safely. The process of drilling concrete is quite simple, but with correct selection tools and understanding the principles of operation you will save yourself a huge amount of time.

Steps

Part 1

Buy or rent an impact drill. Drilling holes in concrete is easier impact drill or a hammer drill (in case major works). These tools will allow you to crush concrete with reciprocating blows of the drill and extract the resulting crumbs by rotating it. Doing this kind of work a regular drill will be slow and difficult since concrete does not drill as easily as wood or metal. For any job that will involve more than drilling a few holes in decorative (rather than structural) concrete surfaces, such as modern softer ones kitchen countertops made of stone chips, don’t skimp on paying a little more to rent a percussion instrument.

Learn the tool. Read the owner's manual and memorize the functions of all buttons and switches on the instrument. You should have a good understanding of how to handle the tool before moving on to the next step.

• Follow safety precautions. This includes wearing safety glasses to prevent concrete chips from getting into your eyes, using earplugs to protect your hearing, and thick work gloves to protect your hands from increased friction and hot drill bits. For long periods of work that generate a lot of dust, it is also recommended to wear a respirator.

1. Insert a high quality concrete drill bit into the tool. Carbide tipped concrete drill bits (or “percussion bits” as the packaging may indicate) are specifically designed for impact drills and can withstand the stress of impact drilling into strong concrete. The length of the fluted drill bit should be no less than the depth of the hole you are going to drill, as these flutes are important for removing generated dust from the hole.

   Adjust the drilling depth. Some drills have the ability to adjust the drilling depth or a special limiter. Read the tool's user manual to learn how to use it. If your machine does not have a drill depth stop, measure and mark with a pencil or masking tape the required hole depth on the drill itself. If you are unsure about the depth of holes you need, follow the guidelines below.

   Hold the drill correctly. Hold the drill with one hand like a pistol, resting index finger to the start button. If your drill has an extra handle, use your other hand to hold it for a more secure grip. Otherwise, simply grab the drill from below with your other hand, closer to the back of the body.

   Part 2

   Drilling concrete

   1. Mark the point for drilling the hole. Using a soft pencil, place a mark on the wall in the form of a dot or cross in the place where you want to drill a hole.

      Drill a pilot hole. Place the drill bit against the mark and briefly run it at slow speed (if your device has an adjustable speed) or make a few short presses on the start button (if there is no speed adjustment). You should be left with a 3-6mm indentation that will help you guide the drill correctly when drilling the main hole.

      Continue drilling, but with more force. Switch to impact mode (if your drill has one). Place the drill on the basting hole strictly perpendicular to the concrete surface. Start drilling again using firm, but not excessive, pressure on the drill until the drill bit begins to sink into the concrete. Gradually increase the rotation speed of the drill and the pressure on it if necessary, but remember that the drill must remain under your full control and in a stable position at all times. Concrete is quite heterogeneous and the drill can easily slip if it hits an air pocket or void.

Sooner or later, most people living in houses with concrete walls need to hang a cabinet, lamp, shelf or picture. At this point, the pressing question arises of how to drill concrete wall. It's no secret that everyone home handyman I have encountered this problem at least once in my life, but not everyone knows how to solve it. Many bravely torture the drill and own strength, but not achieving the required result, they give up everything until the next attempt to make a hole in the wall. But the drill eventually breaks, and the shelves remain standing somewhere in the corner of the room or collecting dust in the pantry. But there are still options - you just need to know them and be able to use them.

Concrete structures are quite strong and difficult to drill. In addition, quite often drills come across crushed stone included in the composition. concrete mixture, from which wall and ceiling slabs are formed.

Holes in concrete have to be made quite often, especially during the process:

• finishing works;
• furniture installation;
• air conditioner suspensions;
• additional electrical wiring device;
• installation of plumbing.

There are two ways to solve the problem of holes in a concrete wall:

• impact drill, and better with a hammer drill, with a pobedit drill;
• diamond drilling.

It is worth noting that ordinary drills It will not be possible to make a hole in a concrete wall, so before starting work you need to purchase drills with specially soldered plates made of high-strength pobedite alloy, which do an excellent job with concrete and brick. But for soft materials It is not recommended to use them, since pobedit drills do not cut them, but crumble them.

What will help the home handyman?

At home, when you need to make 2-3 holes in concrete, you can get by with a regular drill, without the impact function. To do this, it is necessary, as the Pobedit drill is immersed into the body of the wall, to break the concrete from time to time with a strong metal pin (punch) matching in size to the diameter of the hole. It is used when the drill begins to “stick” in the wall. At this moment, a steel punch is inserted into the hole and they begin to hit it with a hammer or sledgehammer, trying to crush areas that are too dense and punch the hole deeper. In this case, the pin is turned a little. Then the hammerless drill can start working again.

All the above steps are repeated one after another until the hole increases to the required depth. This method is quite labor-intensive and tedious, but quite acceptable for a couple of holes.

Alternatively, when drilling a hole in concrete, you can use universal diamond-coated drills. They are highly effective when working with metal, crushed stone and concrete. They can only be installed on a conventional electric drill, or on a tool with the vibration function disabled.

You need to work with the drill extremely carefully, otherwise it will fail too quickly. The advice that professionals give is that to avoid overheating of the drill, it should be moistened with cold water from time to time.

How to choose a tool?

For a larger volume of work, you need a hammer drill or drill with an impact function and drills with pobedite tips. The impact drill combines rotary and reciprocating motion, which helps it cope perfectly with lightweight concrete, and to the question of how to drill through a concrete wall, which is a load-bearing wall, there is a simple answer - the best assistant will be a hammer drill, the main purpose of which is to punch through concrete fences. There is one more difference:

• an impact drill is designed to drill holes no more than 12 mm in diameter;
• a hammer drill is capable of drilling holes large size.

Reinforcement found in the body of a concrete wall should be drilled using metal drills.

What do you use to drill large holes?

Professionals who are constantly faced with the problem of drilling holes in concrete use special equipment, which includes:

• powerful electric motor;
• drilling drive;
• diamond core drills of different diameters;
• a guide post fixed to the base.

Diamond drilling allows you to make holes large diameter– up to 40 cm. The process occurs quite quickly, efficiently, without unnecessary dust and noise. Water is automatically supplied to the drilling site, which simultaneously cools the diamond bit and washes away dust.

In modern buildings, as a rule, the walls and ceilings are concrete. Sooner or later, the need may arise, for example, to hang a lamp shelf or, during renovation, to sheathe the walls with plasterboard, then the problem arises of how to drill through a concrete wall with a drill.

Difficulty in drilling can arise due to a number of reasons. Firstly, the structure of concrete panels is heterogeneous and they contain iron reinforcement, cement-sand mortars and crushed stone, which makes drilling difficult. Secondly, concrete has high strength and is very difficult to process.

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How are concrete walls drilled?

Before starting work, it is important to decide which drilling device is best to do the job. The choice, of course, is small, since there are two types of wall drilling:

• drill;
• hammer drill.

A hammer drill will do this job better, since its function is precisely to punch holes in concrete or stone surfaces. Using this tool you can make holes large section, but even the highest quality impact drill is not capable of more than 12 cm.

But when you need to drill foam concrete walls, a drill will be optimal, since a hammer drill will simply crumble the surface.

When working with concrete walls, you absolutely cannot use a hammerless drill, because it will be pointless, and you can ruin the tool.

When you only have to make a few holes and you don’t have a hammer drill, you shouldn’t buy one because of this; you can get by with a drill. If there is a lot of work to be done, then purchasing a hammer drill is inevitable.

In the case when you still need to work with a drill, it is important not to forget that you need to use a Pobedit drill for concrete and specifically with a tip coated with a carbide compound.

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Diamond drills and other devices

On store shelves you can sometimes find a model of ring drills with a diamond tip. Such products are intended for drilling huge holes with a cross-section of up to 25 cm. It is important to note that such devices are expensive, and therefore they should not be purchased for home use.

If there is a need to make a hole for a socket or switch, you can use crowns designed for drilling concrete. The cutting part around the circumference has universal solderings made of carbide metals.

Such elements have a cross-section from 35 to 120 mm, but products with a cross-section of 68 mm are in great demand, since this is what sockets and switches have. If you are drilling with a crown, it is important not to forget to turn off the hammer drill’s impact function. This device drills holes with a maximum depth of 15 cm. If greater depth is required, it is recommended to use an extension nozzle.

Similar bits are also sold for electric drills. They differ from the previous ones in that instead of soldering they are equipped with a tungsten carbide alloy coating. The advantages of such a device are that if concrete walls are lined with tiles, then there is no point in replacing the nozzle, since it works well on concrete surfaces. But we must not forget that such devices can be used for drills with a power above 1000 W.

Most often, drills are used to work with a rotary hammer, the cross-section of which ranges from 4 to 80 mm. Many people are faced with the problem of choosing the correct drill diameter. But the smartest thing to do when purchasing a hammer drill is to also purchase a set of concrete drills. But a high-quality kit costs a lot of money, and therefore it is necessary to select the same cross-section as that of the dowel intended for this model.

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Everyone knows that a concrete wall and that's it similar designs have durable qualities and are difficult to drill, since most often when working you can stumble upon crushed stone included in the concrete composition from which wall and ceiling structures. Holes in concrete slabs ah during construction are carried out quite often:

• during finishing works;
• when installing built-in furniture;
• when installing air conditioners;
• when installing electrical wiring;
• when installing plumbing fixtures.

During the minor household repairs You can get by with a simple electric drill that is not equipped with an impact function.

To do this, in the process of introducing a pobedit drill into concrete surface Periodically, you need to crush the concrete with a metal punch, which must correspond to the cross-section of the hole. It is used when, while drilling, an electric drill starts to get stuck in concrete. Then they place the punch in the hole and hit it, using a hammer or sledgehammer, which helps to crush compacted areas and penetrate deeper. But you need to turn the punch slightly, and then you can start working with a hammerless drill again.

These manipulations should be continued until the holes reach the desired depth. This method is very time-consuming, but suitable for several holes.

Of course, you can also use universal drills with diamond tips. They will do an excellent job with metal, crushed stone, as well as concrete structures. But it is important to note that they are only suitable for an ordinary drill or a device with the vibration mode turned off. When using diamond drills, you should remember that they require cooling during operation.

But good effect Drilling can be achieved using a hammer drill. Its advantages include combining the functions of rotational motion with reciprocating motion. When drilling with such a drill, the tip of the drill is able to break the concrete composition, and the drilling process will be the least labor-intensive.

Each of us at least once in our lives has been faced with the task of hanging a shelf, picture or other object in our apartment, and since the walls of the domestic housing stock are predominantly concrete, this task requires some skill and the necessary tool at hand.

Sometimes this procedure takes on a non-trivial character, because walls can have a heterogeneous structure, including iron reinforcement or crushed stone, and ordinary concrete is quite durable, so today we will tell the reader how to make a hole in a concrete wall and what you will need for this .

First of all, we need to decide on the tool with which we will drill the wall - the choice is between a drill and a hammer drill. If you have only one of these tools at your disposal, then the agony of choice disappears by itself, but for those who plan to rent equipment, let us remind you that a hammer drill is a device designed specifically for this type of work, and therefore in most cases fits better. And the available range of output section sizes is much larger than that of a drill.

But a drill also has its advantages, for example, when it comes to foam concrete structures, a hammer drill will simply crumble such a base. Remember that the drill must be an impact drill; an unimpacted one will not produce results and will most likely be damaged. Therefore, if you are wondering whether it is possible to drill through a concrete wall with a drill, then know that the answer depends on the type of drill and the material of the wall itself.

Drill

An impact drill differs from the more common hammerless drill in that the movement of the drill in it is carried out using special ratchets with teeth. It is very simple to use; you just need to switch the tool to impact rotation mode and get down to business. An even more important component for success are suitable attachments for our task - drills; read their list in one of the paragraphs below.

Beyond choice the right tool and consumables for it, let’s note a couple more features of drilling concrete walls with a drill. If you nevertheless decide to work with a hammerless drill, then stop while drilling and help with your hands, driving the pointed drill with a hammer, then continue using the drill. If the drill is low-powered, then let it rest often to avoid overheating.

In general, nothing is impossible, and with desire and diligence, you will certainly be able to cope with a wall, having in your arsenal tools that are not entirely suitable for this, but remember that if the surface does not give in, it is better to postpone the idea if you do not want to say goodbye to your drill.

Hammer

With this tool everything is simple:

1. First, we check its serviceability and clean the barrel shaft of debris.
2. Insert the drill until it clicks
3. We bring the tool perpendicular to the wall and begin to drill, applying a little pressure. If the process takes a long time, we moisten the drill with plain water from time to time so that it does not overheat.
4. If the drill gets stuck, then we simply take it out of the hammer drill, insert a tool of a smaller diameter and try to use it to free the stuck object by widening the hole.

What drills are suitable?

As promised, we are considering drills suitable for our venture. The following will suit us:

1. Drills for concrete with a pobedit tip - cope well with the material due to the cutting edge made of teeth based on carbide alloys. The safety margin is enough even for drilling metal, but the impact mode quickly renders them unusable. If you need to make a hole between the reinforcement, this is the best option.
2. The diamond bit for impactless drilling is a modern attachment that opens material of any strength due to diamond sputtering.
3. Crown KS - in them on cutting edge diamond crystals have settled, making them something of a cross between the two previous types.

Almost everything 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 – Angle 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 building 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 nozzle is designed taking into account safety standards and provides easy drilling autoclaved concrete.

You can break through a concrete wall 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 large hole 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 rotary hammer, a bit 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 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 of a relatively small diameter, the tool can be held in your hands. But for drilling holes large sizes professional installation 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 method is used diamond drilling 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:

1. First of all, you will need to determine the location of the electrical wiring. Failure to comply with this condition may result in an electric shock.
2. Mark drilling locations. In this case, the master must have a comfortable and stable position. The drilling process is accompanied a large number dust, so when working, eyes must be protected with special glasses.
3. 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.
4. 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.
5. The technician needs to monitor the temperature of the drill and cool it with water every 10 minutes.
6. During the drilling process, the tool may encounter reinforcement or stones. This can be understood by the characteristic whistle and ringing (reinforcement). In addition, 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.
7. 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.
8. 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 the work in this case will be sloppy, since the edges will not be even enough.

Therefore, it is better to punch a hole in concrete with a crown, which must be selected in accordance with 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 process of making holes 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 special diamond installation the costs are paid off 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.