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August 12, 2017 18:05

How to choose the gun drills for concrete - tips and rules

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First of all, it is necessary to clarify that concrete structures are not drilled, namely the Buryats.Sometimes applied and impact drills, which are inserted into a drill for concrete, but a work called "drilling" can only partly.And in this case, the hole can be made small diameter and also a small depth.

So the conversation will be about it drills in concrete for the gun, not the drills.Their main difference - in the shank.We drill it is cylindrical and smooth, while the drill is made according to SDS standard and applies only to work with the hammer.

Boer

Drills for drilling small and medium size in appearance resemble the drill.Their rod has a screw shape and a cutting edge tip made of carbide material.She was given a more rounded shape, which increases the reliability of the instrument, experiencing high impact loads.It should be understood that unlike drills, drills are not cooled, and quenched not sharpened.This "material" disposable not be repaired.That is why they are sold, as a rule, the packages (10 pcs.).




For drilling larger holes (for example, under the switches, sockets) special bits are used.The generated material remains inside them.They are divided into diamond and "dry" drilling.The edge may be coated or diamond, or with teeth of hard metal."Gear" products are mainly used for impact "pass", and powder-coated - for non-impact drilling with simultaneous water cooling.

Boers - for - punch

How to choose a drill on concrete

steeper spiral, the higher the penetration rate and more depth.This configuration provides better removal of produced material (concrete crumbs).

When drilling at shallow depth is advisable to use the product with a flat spiral.Such drills stronger, so - more durable.

should buy borax only "branded".The fact that the product «maid in someone unknown," the size of the recesses and grooves of the shank can not overlap with the punch holder.This is, firstly, difficult job, and secondly, the cartridge eventually break.Subsequently will lead to a quick break to be inserted in his other Boers.The tool of known manufacturers such as Bosch, Makita, Sturm! Differ affordable price and excellent quality, so that too is not worth saving.

Some tips for drilling concrete

  • when drilling is necessary to use the high-speed mode, which is recommended by the manufacturer;
  • uptime should be small.Every 10 seconds, you need to remove the drill from the hole to avoid overheating;
  • installation tool holder shank is necessary to drop a drop of oil (for example, lithologic).This reduces friction and thus impede the rapid heating;
  • necessary to maintain the drilling axis.Deviations from it lead to damage to the drill;
  • commercially available adapters, allowing attachment of heavy hammers mounted on devices of the "middle" class.So manufacturers are trying to unify the tool.Professionals do not recommend and advise to follow the principle of "to each his own";
  • if the plate in place of drilling or shtrobleniya many fittings, use a drill with a diamond-coated or special, Drilling is reinforced concrete."Just" a drill may break, and pull out a piece of sometimes becomes a big problem.

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