It’s not a secret for anyone that it is unlikely that it will be possible to make a hole in reinforced concrete with an ordinary drill. When you try to do this, the product will slide on the concrete surface and become unusable.
In general, concrete is the most difficult and intractable material to process. To work with it, special drill bits are used, on which carbide plates are welded.
The material for the manufacture of products is an alloy of cobalt and tungsten carbide. And the metalware received the name “victory drill” from the word “victory”. Because the drills created in the last century were designed to defeat concrete or other material.
Winning drills require special operating conditions. In their device, a carbide plate is attached to the body by soldering. In the process, the active part of the tool is subject to strong heat, while soldering strength is reduced, which leads to the likelihood of tearing the plate.
To prevent this, the drill bits must be periodically cooled. Products of the latest generations receive a plate using
laser welding. This makes it possible to withstand heating up to 1200C degrees, and drilling can be carried out at a faster speed.
New developments allow you to significantly change the structure of the carbide plate. Today, along with tungsten carbide, nitrides and carbides of titanium, boron, and silicon are used. However, such combinations are difficult to drill concrete. Significantly accelerate this process allows the use of reciprocating (shock) motion simultaneously with rotational. Due to this, the concrete at the point of impact is cracked, and drilling gives the best result.
For processing concrete, drill bits must be used in special drills equipped with a percussion device. This will allow to achieve the optimum drilling and punching mode.
To speed up the process and extend the life of the product, after every 15 seconds of operation, you need to remove the drill from the hole, insert the same product that has served your purpose into the hole, and perform a couple of blows with a hammer on it.
To achieve success, asymmetric sharpening of the drill allows . This allows you to speed up the process of drilling concrete. It turns out that even a durable drill bit is not suitable for processing steel, and sometimes even soft material. Therefore, when faced with fittings, products can be damaged. Modern technological hardware has resistance to overheating and in the process of drilling are able to overcome any obstacles. In another case, the victorious product should be replaced with a step drill for working with metal.
To increase the speed of operation, carbide plates are used, equipped with teeth along the cutting edge. Thanks to special sharpening, such products can process any material (concrete, granite, steel, glass and even wood). Sometimes in the process of work they use sets of hardware, which includes a drill for tiles, metal, wood, etc.