Drill with a pobedit tip: structure, types and features of choice

Manufacturers of construction equipment supply trading platforms with a variety of tools for forming certain holes. Let's figure out what a concrete drill looks like and what you need to know about it to make the right choice. Let's get acquainted with the technology of drilling reinforced concrete structures and alternative attachments for making large-diameter holes. After reading the article, you will not have any difficulties in determining the right drill for concrete so that the result meets your expectations.

Variety of drills Source stroyday.ru

Application

Beginning builders sometimes find themselves in a difficult situation. The drills are new, of a good brand, the drill is in working order, but the resulting hole is not at all as planned, or does not work out at all. Often the reason for failure does not lie in poor work skills or a low-quality tool.

The first thing you should pay attention to is the materials from which the drill is made and the surface where the hole needs to be made. The basic rule is that the cutting tool must be harder than whatever it is going to cut. Proper sharpening of the tip is also important.

If you take a high-quality metal drill and try to make a hole, for example, in concrete, the product will quickly fail. It is not intended for such purposes. Drills with Pobedit tips are suitable for processing the hardest surfaces. Their cutting part is coated with an alloy called “win”, which has increased strength.

On the contrary, such products are often not suitable if processing is required , for example:

plastic;
steel;
tree.

The winner does not cut the material, but rather crumbles it , so the holes are shaggy, ugly and larger than necessary. In the case of plastic, the necessary chip rejection is not ensured. As a result, the hole quickly becomes clogged, which leads to undesirable consequences:

the load on the drill increases;
operating time increases and efficiency decreases.

Because of these features, many masters, especially the “old school” ones, advise using pobedit only in suitable cases. However, the classic pobedit drill gradually changed. Now on the shelves there are products with special soldering (inserts), which are used to work with various materials, including “inconvenient” ones. For example, you can find a pobedit metal drill.

How to drill concrete with an impact drill

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Each of us has repeatedly faced the need to mount various objects on the walls that add variety to the interior, create comfort, or simply remind us of the pleasant moments of life. Most often you have to attach lamps and sconces, paintings and photographs, mirrors and shelves to a concrete surface, install an air conditioner, or a TV.

If in the case of a small painting or photograph you can get by by driving a nail into the wall, then when the question is about more massive and heavy objects, the question of drilling holes arises.

To avoid misunderstandings when working with concrete, for example, drill breakage or dullness, it is worth properly preparing the partition, choosing a high-quality tool and selecting the correct drill.

Choosing a tool and working with it

When choosing a tool to drill a hole, you should understand that your work depends on it. A good drill accurately drills into a concrete wall or other required material, simplifying the drilling process, while a bad one will require a lot of time, may not cope with the task, or will complicate it. What you need to pay attention to when choosing a drill:

Is it possible to change the drilling speed? – this point is important, since correction of the speed mode will ensure accurate operation of the drill, helping it not to damage the surface.
Is it possible to hammer drill and adjust the depth? – impact drilling can be used on problem areas, softening them.
Is it possible to hold the drill with both hands? – a drill is not a light tool and therefore preference should be given to models that are equipped with handles.
Is the tool's power sufficient for your job?

Having decided on a drill, before starting work you need to get the hang of holding it. To do this, you should take the drill in one hand, like a pistol, and place the other hand on the handle of the tool (if it is not intended by the design, the hand is placed near the chuck).

It is necessary to hold the drill in your hands strictly horizontally, so that the hole does not turn out distorted or at the wrong angle. Wait until the drill reaches ambient temperature before turning on the drill. Sudden temperature changes can cause condensation.

If you decide to rest while working, unplug the tool.

Surface preparation

Before you start drilling, you need to make sure that there are no wiring, pipes, or electrical cables in the selected area of the ceiling. A metal detector will help you cope with this task, as it reacts to non-ferrous metals, iron and steel.

If you ignore this condition, you may stumble upon the fittings, damage the drill, or cables/pipes that were hidden in the ceiling.

If this area satisfies all the above requirements, then a point is marked on the wall, and then a small indentation is made in it at slow speed using a drill.

It is also worth remembering that the surface of a concrete wall is looser than subsequent layers.

Drill selection

This point can rightfully be considered the main one, since the quality of work and the safety of the drill itself, as well as the accuracy of the work, depend on the correctly selected drill.

Today there is a huge variety of drills on the market: for working on wood, metal, concrete. The latter are distinguished by a triangular tip. For a concrete surface, it is best to use a carbide drill, such as a Pobedit one.

This type of drill crushes the material without tearing it, which is ideal for concrete floors.

If, when drilling a wall, the drill does not go forward when it encounters a dense area, it is recommended to use a punch. Having inserted the punch into the hole, hit it with a hammer until it begins to move forward and softens the problem area. After this you can continue drilling.

It should be noted that without a punch, a hammer drill can easily cope with this kind of difficulty, but it makes holes that exceed 13 mm in diameter. If you want to use universal drills when drilling, you need to remember that they require cooling, vibration is turned off and are only suitable for a regular drill.

A little about the structure of the drill and installation of the drill

A classic drill consists of a power cable, a button, a capacitor wire, a reverse, brushes and springs, an armature, a stator, a gearbox and a chuck, bearings, a key and mounting screws. A correctly inserted drill improves the quality of drilling and can make it safer.

The first thing you should check when starting to work with a drill is whether there is any contamination on the drill itself. A rag will be an excellent assistant in cleaning drills. If the drill is loosely secured, there is a risk that it will fly out and injure the technician. Accordingly, it is necessary to immerse the drill as much as possible into the chuck (all the way!).

Under no circumstances try to “extend” the drill by incompletely immersing it in the chuck!

It is important to ensure that the drill in the tool is secured strictly along the axis. If this rule is not followed, drilling in concrete will be performed poorly, the shape of the hole may be unpredictable, and the cause of all these misunderstandings will be the elementary effect of drill beating.

Selection of power for drills

The optimal power for working on concrete to drill a hole is considered to be at least 600 W and 2500 rpm, but this figure must be adjusted depending on the manufacturer’s recommendations so as not to damage the drill. As mentioned, the concrete "crumbs" when we drill, and this does not require too much rotation.

Errors when working with a drill

Clothes and gloves must fit properly.

Under no circumstances should you try to hold the rotating chuck with your hand - this is what the drill body is for. Otherwise, you may injure yourself. If you use gloves, do not take them “with reserve”. Gloves that do not fit properly may also become caught in the chuck and cause injury. Overalls should not dangle - they can be rolled up or pressed with sleeves.

You should not press as hard as you can on the turned-on drill - this will cause you to fall, as it will become more difficult for you to control your balance. In addition, you may break the drill. If a tool passes through a concrete wall, the injuries it can cause to a person can be more than serious.

Source: https://moy-instrument.ru/instrumenty/kak-sverlit-beton-udarnoj-drelyu.html

History will win

The alloy called “Pobedit” was created in the USSR in 1929. Intended primarily for the manufacture of cutting tools. The main goal of the developers was to select the optimal composition and obtain a material of exceptional strength. A solution has been found. The alloy, new at that time, included the following metals:

tungsten (90%);
cobalt (10%).

They began to make soldering for drills from pobedit and use it for other purposes. New technology has made it possible to significantly simplify and make more efficient the processing of materials that are particularly durable.

Since its creation, the composition of the alloy has changed many times: a different ratio of tungsten and cobalt was used, additives were added, etc. Now you can find solutions that:

have different proportions of components;
cheaper;
easier to manufacture;
more durable;
suitable for working with less hard materials (steel, aluminum, etc.).

Despite the fact that the compositions of such modern alloys differ markedly from the classical ones and from each other, they are still called Pobedit.

Features of carbide drills for metal: nuances of choice, types, features

Often, when processing metal workpieces, it is necessary to resort to special devices designed to work with particularly durable materials. This is exactly what a carbide drill can be considered. This part is most widely used in the processing of grooves. At the same time, it is used to carve metal products.

Machine tools for various purposes are often equipped with a similar element. If we consider the types of such drills offered on the market, the end types are considered the most popular.

When considering the products available for sale, it should be noted that they may have a different number of teeth and design options. Typically, these elements are created using special materials that are of high quality and demonstrate high wear resistance. These properties allow you to perform the necessary operations with minimal time.

What factors should be considered when choosing funds?

Among the devices available for drilling, several of the most common types can be distinguished:

cylindrical;
end;
keyed

It is possible to make the right decision in favor of the appropriate type only if the buyer has an idea of what he plans to use this device for. In addition to the drilling depth, you need to know about the material that will have to be processed.

At the stage of selecting carbide drills for metal, the following parameters deserve the greatest attention:

strength;
quality of execution;
brand and country of origin;
material used for manufacturing;
price;
reliability.

The best solution would be if the buyer chooses drills from trusted manufacturers. By acting in this way, we can guarantee that there will be no forced breaks during drilling, and low quality of finished products will also be eliminated.

Carbide drills: application, variety of models and differences

Carbide drilling products are widely used not only in production, but also in everyday life, the reason for which is their functional features and significant advantages. The proposed models can be classified into several types, based on such a parameter as their scope of application.

For example, if the task arises of creating large-diameter holes, then it is advisable to choose drills of the first type. Screw-type devices will help to effectively perform the operation if it is necessary to ensure a significant depth of the hole being created.

What types of carbide drills are there?

A characteristic feature of carbide drills for metal is a very durable titanium-tungsten base, the beneficial effect of which is to ensure high speed of work. In addition to this, the advantage of such products is their high resistance to external influences.

Types of drills

It is customary to distinguish the following types of carbide drills for metal:

solid;
welded;
equipped with plates.

If there is a need to purchase carbide drills, it is advisable to consider models from well-known companies. This gives confidence in the high quality and reliability of the purchased product.

Drill designs with replaceable carbide inserts

When creating drills for metal equipped with replaceable carbide inserts, the diameter must be maintained, the range of which can be 12–63 mm. They allow you to create holes up to 5 diameters. Moreover, they are able to work with surfaces made of various materials. At the heart of the metal drill there is a body that has precise seating surfaces for the inserts and directly carbide inserts, which are fixed in the body with screws.

The design features of the metal drill body are related to the external design and size of the grooves used to remove chips. They can have a straight or spiral design. It is worth noting that they may differ in terms of the helix angle. If the channel profiling was carried out in compliance with the technology, then this makes it possible to perform processing with high feed rates. Moreover, tangling of chips is eliminated here, and the quality of the processed surface remains quite high.

It is also necessary to pay attention to the design of the channels for supplying coolant. It is best when they are located close to the body area. This placement option makes it possible to reduce the core of the drill body to a minimum, which makes it possible to increase the grooves used to remove chips.

Design

The design of carbide inserts has its own characteristics, thanks to which it is possible to achieve high productivity and stability of the tool when processing various materials and operating the tool in any conditions. It is possible to ensure higher productivity and stability of the tool due to the geometry of the front surface of the insert, the grade of the carbide and the design of the insert itself.

The most widespread are carbide inserts for drills, having the shape of a three- and tetrahedron. Drilling using these devices allows the hole to be created to have an almost flat bottom. A feature of outdated modifications of drills is the presence of a square, triangular or “broken triangle” type plate. When using such devices, you can guarantee fairly good results in terms of performance, durability and quality. However, they still do not show as impressive results as drilling products equipped with specially profiled inserts.

The best results can be expected from a technology that is implemented in a design called step-by-step cutting. Here attention is paid to the cutting edge of the central tetrahedral plate, made in the form of a wave. Initially, with the help of such technology, it is possible to stabilize the drill and at the same time minimize the risk of its drift. In addition to this, a significant reduction in cutting force is observed.

Drills equipped with replaceable carbide inserts for metal are also distinguished by the fact that they allow you to create holes whose diameter exceeds the nominal value of the drill. This is achieved by moving the drill on a lathe relative to the axis of the element at a distance in the range of 0.8–3.5 mm. The exact value is determined directly by the diameter.

A similar operation on a machining center is performed using eccentric bushings. Adjustable drill chucks can also be used instead. At the same time, using a drill with replaceable carbide inserts for metal, you can perform operations such as boring pre-created holes, as well as chamfering. This problem is solved using the peripheral drill plate.

When planning to use drills with replaceable inserts for metal, you must keep in mind that they can be used to process inclined and concave surfaces without resorting to surface preparation and drilling. To successfully cope with such a task, you only need to reduce the feed rate during plunge-in by 50–70%.

Increase in productivity

Among the advantages of metal drills equipped with replaceable carbide inserts, it should be noted that they can increase productivity, durability and achieve greater savings per part.

If you plan to create holes Ф25, and the surface used is made of steel, then when working with a high-quality drill for metal made of high-speed steel, it is best to use the following processing modes:

For the spindle, a rotation speed of 380 min-1 is selected;
feed per revolution is set at 0.4 mm/rev;
the minute feed rate will be 152 mm/min.

If a drill with replaceable carbide inserts is selected for processing a similar material, then the spindle speed should be set to 3700 rpm, the feed per revolution will be 0.09 mm/rev, and the optimal minute feed will be 333 mm/min .

A special feature of all inserts is the presence of four cutting edges. In addition to this, it should be remembered that carbide inserts have much greater durability than drilling products made on the basis of high-speed steel. If the choice was made on devices equipped with replaceable plates, then the user will not have to waste time and effort on such an operation as regrinding the tool. This advantage acquires particular relevance in situations where it is planned to create many holes.

Application of coolant

To achieve the best results when using a metal drill equipped with replaceable carbide inserts, internal coolant must be present. If you have to deal with holes whose depth does not exceed one diameter, then it is permissible to refuse to use coolant. When determining coolant flow, the diameter of the metal drill used should be taken into account.

If we consider the range of drills for metal equipped with replaceable carbide inserts, then it includes a fairly large number of modifications. Moreover, to obtain the best results when drilling, you should first of all take care of the correct selection and use of metal-cutting tools. For this reason, when deciding to use a new technology or make changes to an existing one, it is advisable to involve specialists in the implementation of this plan. They will not only help you suggest the most suitable solution for the problem at hand, but will also help you implement it most effectively.

Technical recommendations for drilling metals

To properly center a metal drill, you must use a centering pin. To do this, you should mark the hole, focusing on the markings. Then the pin is inserted into the recess and the magnet is turned on. Next, you should re-check that the pin is positioned correctly, since the tripod often moves when the magnet is working.

Decide on the optimal speed. This parameter is of great importance. Please note that if you select a higher speed than recommended, the drilling job will not be completed. It is imperative to ensure a rotation speed of at least 25% of the recommended one. When working with carbide drills, you should remember that they react sensitively to excessively low speeds. In this case, you may encounter phenomena such as increased vibration and chipping of teeth. If the speed is increased by more than 20%, then when using drills made of high-speed and powder steel, the latter will quickly become unusable.

You need to choose the right feed. At the beginning of work, it is necessary to set the flow at a level 2 times lower than the recommended one. It should be kept in mind that if there is too much pressure on the drill, the speed will remain the same. To achieve greater productivity, it is recommended to use equipment with increased rotation speed in combination with carbide drills. Sometimes you may need to apply more force while drilling. If this happens, then there is a high probability that you are working with a dull drill bit or are trying to create a hole in a material that is too hard.

Conclusion

Carbide drills are a rather specific product for processing surfaces made of particularly durable materials. For this reason, the choice of such devices should be made taking into account the specific product in which it is planned to create a hole. Using the first carbide drill you come across does not always allow you to effectively solve the problem that has arisen.

To ensure high drilling performance, many factors must be taken into account, including the characteristics of the material being processed, the characteristics of the holes created, and the quality of the edge. In some cases, it may be necessary to purchase special drilling equipment, since conventional tools designed for using drills to create holes in workpieces of normal strength may not be suitable for this. In some situations, this can even lead to the fact that not only will it not be possible to effectively solve the problem of drilling holes, but also make the purchased carbide drill, the cost of which is usually quite high, unsuitable for further use.

Author: Nikolay Ivanovich Matveev
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Design features and operation

Unlike some other drills, Pobedit drills do not require sharpening. They initially have the required tip structure (angles) for proper operation.

The cutting part is represented by two “shoulders” of approximately the same width. Where they intersect is the future center of the hole . If their widths are different:

the diameter of the hole will determine the larger “shoulder”;
as the craftsmen put it, the drill will “break” the hole: it will turn out larger than necessary;
physical activity will increase;
the intensity of the drill will increase;
drills break more often.

If the tip becomes dull , it can be sharpened. In this case, you need to keep in mind:

The angle depends on the hardness of the material to be processed. The stronger the surface, the smaller it is.
Pobedit does not tolerate too much heat. At high values, the tip may crack or even separate from the drill. Therefore, you need to prevent overheating and cool it more often when sharpening. For example, plain water will do.
If overheating does occur, do not cool it suddenly. Otherwise, cracks will appear. It is best to allow it to cool naturally, that is, on its own.

If the diameter of the product is small, then it will most likely fail earlier. This rule applies even to experienced craftsmen. Therefore, it is better to stock up on a certain supply of drills to save time and nerves. Some masters argue that sometimes “courage” is also important. The work spirit can also be lost after going to the store. The extra ones will still come in handy later.

Main types

There are many types of drills made from Pobedite. They differ in manufacturer, quality, and price. Depending on the shape of the shank, there are:

hexagonal: regular or recessed for quick installation;
cylindrical - chambered for a standard drill;
SDS - can be fixed in most rotary hammers;
triangular - they are held especially securely and do not rotate.

The diameters are also different. Values start from 3 mm. Pobedit drills are:

for working with stone, brick, concrete;
for gas and foam concrete;
for ceramics, glass, tiles.

Drill bits for the hardest surfaces

Pobedit drills for stone, brick, and concrete are the most popular. Most of them can be used in shock mode. The sharpening angle is usually 130°. Some companies make the tip shape more complex:

the angle is greater;
the tip is centering.

If the hammer drill mode is selected, the tool crushes the surface like a chisel. The removed material is removed thanks to special grooves on the steel body of the drill. The usual number of these devices is from 2 to 4. They also have another purpose. The grooves prevent the drill from getting stuck while rotating.

Some manufacturers, on the contrary, prohibit the use of their products in shock mode. It depends on the characteristics of the alloy and the sharpening angle.

Typically, winning products in this category are considered disposable. At least that's what sellers do. However, craftsmen often sharpen them themselves and use them again. This requires an electric sharpener and a little practice.

Sometimes you need to get a large hole. If the diameter is from 65 to 120 mm, special crowns are used. Their design also includes a similar drill.

Drills for porous concrete

Today, building products made from porous concrete are very popular:

foam concrete;
aerated concrete;
silicate

If a small hole is required, a regular metal drill bit may work. Its disadvantage is that it is short-lived. It is better to choose a standard victorious one. In this case, you don’t have to worry about the plaster.

If a hole of 30−120 mm is required , Pobedit drills with special brazing are used for the following materials:

externally similar to feather drills for wood;
shank - up to 450 mm, piercing through a standard block;
the strength of the alloy is lower than for stone;
for waste disposal there is a spiral of 1-1.5 turns;
Any drill or hammer drill will do, the only condition is to use the non-impact mode.

Can be used for surfaces with external or internal finishing. The main thing is that there is plaster - without a reinforcing mesh of metal.

Drill bits for tiles, ceramics, glass

On sale you can find products designed for other types of material:

glass;
tiles;
ceramics.

They are distinguished by the following features:

the pobedit tip in such cases is made in the shape of a cone;
the shank is round, sometimes in the form of a hexagon;
used in shockless mode;
diameter: 3−12 mm.

Sometimes the design of this type of drill is strengthened:

pobedite plates - two;
cutting edges - four;

This results in smoother edges and increased accuracy. It is usually recommended to use a rotation speed of about 400-800 rpm during operation. Products with a diameter of 10 mm are most often in demand.

There are other nuances when working:

If you need a hole of 20-94 mm, “ballerinas” are used - circular drills. With their help you can change the diameter of the hole. Consist of two pobedit plates. Sometimes a mesh is included to protect against splinters.
If small holes are required, then drills of this type are quite suitable for concrete. Moreover, there may be plaster on it.

Many manufacturers recommend using water cooling during operation. This will help:

extend service life;
increase efficiency.

Advantages and disadvantages

The distinctive properties of the pobedit tool made it indispensable when carrying out a variety of construction and repair work.

Among the obvious advantages of Pobedit drills, it is important to note the following properties:

These drills can successfully process even hard materials such as brick, concrete, ceramic tiles, marble and granite. Regular tool steel drills will not be able to handle this.
Thanks to its thoughtful design, a Pobedit drill will not be much more expensive than a regular drill without an additional tip.
The tool does not require preliminary sharpening and is immediately ready for use.
A large number of types of Pobedit drills are produced. Therefore, finding a tool with a shank for the required type of chuck is not difficult.
Pobedit takes shock loads well, so it works successfully on a hammer drill in shock mode.
Some high-quality drills are capable of processing reinforced concrete by drilling through reinforcement.
Pobedit is not afraid of abrasive inclusions, which are found everywhere in concrete.

The disadvantages of this tool include the following:

Since the drill crumbles the material being processed, it is almost impossible to get high-quality holes in metal or wood. To process them, it is better to use a different type of tool.
The cost of a Pobedit drill will be slightly higher than usual, but this is justified by their uniqueness, durability and performance.
When working with particularly durable materials, Pobedit concrete drills require periodic cooling.
When using a cheap tool, pobedite deposits often burst or become unsoldered from the drill.

Selecting a Victory Drill

The stores now have a large selection of drills made from Pobedit. You can always choose something suitable for a specific case, given working conditions and material. They are sold individually or in sets.

Product prices may vary greatly. It depends:

from the manufacturer, brand recognition;
from the country of manufacture;
from the seller.

As a rule, popular European brands are more expensive . They are usually worth it, as they are distinguished by:

good quality, including sharpening;
mandatory guarantee;
The tips are difficult to distinguish against the general background, since the soldering is very neat.

There are mid-level products. The cheapest products include products from unknown companies. Their common disadvantages include:

strength - low;
do not always correspond to the stated characteristics.

Drills from Bosch

Bosch products are well known to everyone. The company also produces drills with pobedit tips. Their diameter ranges from 3 to 25 mm.

Blue Granite series products are designed for stone processing. They are distinguished by:

reliability;
quality;
They drill concrete better than ordinary pobedit ones;
U-shaped groove for good waste removal;
used with impact drills.

You can also highlight:

Silver Percussion - also for stone and concrete of special strength.
Impact - for processing natural and artificial stone.
Karat - designed for drilling any surface except concrete and artificial stone. The cutting part is sharpened in a special way and sharper, so the edges of holes in various materials are smooth.
Black Quartz - for roof tiles and tiles. Can withstand heavy loads.

DeWalt drills

Among the manufacturers, DeWalt stands out . The products of the Extreme SDS-Plus series are especially famous. Its features include:

diameters - from 4 to 16 mm;
shank - round or hexagonal;
the cutting part is serrated, even takes concrete with reinforcement;
the groove is in the shape of a jug, it removes debris well;
the tip is attached to the drill using a special technology; special solder with copper is used;
due to the design, such products can better withstand overheating;
the holes are very smooth.

When choosing pobedit drills from any manufacturer, it is better to give preference to those that are designed for a specific material. If the tool is used infrequently, you can get by with “wide-spectrum” products. In any case, it is important to feel the characteristics of each type in work and practice.