Construction and mining equipment,oriented on the creation of holes and wells, is equipped with special nozzles. Depending on the nature of the operation, it can be a small drill, and a massive crown. The most complex, responsible and large-scale measures allow to perform a drilling bit, which can have different parameters. The advantages of such equipment include a high degree of performance, mechanical reliability and versatility. Although, of course, for each type of work a drill with certain properties is used.
Assignment of drill bits
Most often, the largest representatives of thisclass baits are used in the mining industry. High degree of wear resistance and destructive impact, supported by the power capabilities of the main equipment, allow the tool to cope with the drilling of solid rock. But the construction area does not do without this type of equipment. In particular, the drill bit is included in the assembly of some types of perforators and even multi-function screwdrivers with impact function. Another thing is that in this case both the dimensions and the operational capabilities of the crown are less high than in models designed to work with rocks.
It is important to note the ability of the crowns to work withspecific materials. The same perforators in powerful designs cope with concrete and some stone rocks. Usually, the drill bit for such tasks is included in the composition of machine perforating machines, which can be used to create large-format holes in the walls.
Varieties
Crowns are divided into several principles, includingnumber by designation and construction device. With regard to designation, conventional conditional separation into concrete equipment, diamond elements and solid metal-based drilling rigs is usually used. The structural assembly of carbide elements also divides into three groups. The first is a segment of ribbed crowns that are characterized as non-abrasive or finely abrasive. As a rule, drilling equipment with such equipment is used in working with clay, limestone, peat, marl and other soil compositions. The second category is the incisor crowns, which are considered monolithic and slightly abrasive. Such a tool is used in the processing of clay and sand shale, limestone and dolomites. And the third group represents self-sharpening crowns with a monolithic and abrasive surface. Such a drill is treated with siltstones, diorites and conglomerates.
Features of diamond crowns
The use of diamond segments in drills andcrowns is considered the most promising direction in mining, and in the construction industry. Firstly, this is due to the increased resistance of the material itself, which has practically no limitations in terms of processing. Secondly, the durability and low wear rate of cutting segments of this origin makes the use of diamond structure economically viable. Today, diamond drill bits are used in all areas where formation of wells of one kind or another is required. The advantages of such equipment also include flexibility in terms of operating conditions. For example, drilling technologies allow the use of a crown for underwater work while maintaining a sufficiently high degree of productivity.
Specifications
One of the main parameters of the crown iscorrespondence to this or that shank. In particular, distinguish models that interact with cylindrical, hexagonal and types of liners SDS-max. It is important to note that a certain size is suitable for each type of cartridge. For example, with the universal system SDS-max, the diameters of the drill bits are combined from 20 mm. The total range for this value varies from 8 to 150 mm. A significant characteristic is the method of cooling. Usually nozzles are divided by the ability to implement one of the drilling methods - wet or dry. The use of the first method involves the supply of water during the operation - thus cooling the element and removing the slag from the dust. Refusal of the system of third-party cooling with dry drilling simplifies the organizational process of performing the operation, but reduces the technical resource of the crown.
Crowns manufacturers
High quality multi-purpose crownsmanufactured under the brands Dewalt, Bosch, Makita, etc. These manufacturers are firmly occupied positions in the construction market, giving them their products with advanced technological advantages. The professional segment is represented by Elitech, Kraftool and MATRIX. In the lines of these brands can be found large-format nozzles, which, in particular, complement the drilling equipment in the mining industry. Not bad in terms of characteristics, domestic enterprises also produce crowns, among which are Interskol, Zubr, Enkor, and others.
The nuances of the operation of crowns
The success of high-quality drillingformed at the stage of preparation. The user must check the working equipment, select the appropriate crown for the planned operation and stock up on necessary supplies. Directly the workflow is desirable to implement using the wet method. For example, carbide drill bits perform their task more efficiently with a rich supply of water. But especially zealous with the Gulf of fluid also does not follow, otherwise there will be a risk of slowing down the rotation of the element.
How to choose a suitable crown?
Pay attention to the materialmanufacturing, technical parameters and, in particular, size, as well as on structural features. As for the material, standard carbide tooling is suitable for the simplest operations, and it is desirable to work with concrete or brick with diamond segments. The diameter is chosen strictly in accordance with the requirements for the result. It is not recommended to give preference to cheap equipment. As a rule, the price of a high quality drill bit costs about 1-1.5 thousand rubles. And this is not much more than the cost of cheap products from little-known manufacturers, which can be 700-800 rubles. A high-quality, high-strength crown will justify this overpayment due to the longer operational life and the effectiveness of the abrasive-destructive effect.
Conclusion
Drilling and drilling of solidsmaterials are required not only in specialized professional areas. Even the household punch in many versions supports the combination with such nozzles. Another thing is that this is more likely to be a drill bit of small diameter. In the household, the availability of such a tool may be required in case of repair of utility systems. For example, if you plan to lay plumbing or heating channels through the wall. Small-sized crowns are also useful for creating small holes in the same concrete in order to organize the electrical infrastructure.
