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Twist drill with a cylindrical shank for drilling fiberglass printed circuit boards, as well as for processing other highly abrasive and hard materials (ceramics, glass, cast iron, hardened steel, etc.). Designed to work in high-speed CNC machines. It can be used in conventional drilling machines, but a collet is required to secure the drill. This requirement is due to the high brittleness of the drill material - VK6M alloy. It is also not recommended to use these drills in a hand drill, they will break quickly.
Reference Information:
Alloy VK6M is a fine-grained tungsten-cobalt alloy containing 94% tungsten carbide and 6% cobalt. It is made from a relatively coarse-grained tungsten powder obtained by reduction of tungsten anhydride in two stages, with the use of an elevated temperature at the first stage of recovery.The fine-grained structure of the VK6M alloy is obtained by intensive wet grinding of the mixture and subsequent sintering of the pressed products at a low temperature. This technology for the manufacture of VK6M alloy provides, as established by thorough research at VNIITS and production tests at machine-building plants, its high wear resistance with very low porosity and static strength equal to the strength of the medium-grained standard VK6 alloy. Abroad (Germany, Sweden, Austria, etc.), a fine-grained alloy of the VK6 type is produced under the HI brand. According to catalog data, this grade is intended for the processing of extremely hard materials, including bleached cast irons, stainless steels and a number of other highly abrasive materials.
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![Solid carbide drill VK6M 2.25mm spiral [shank 3mm]](/files/pic/sverlo/bk6m-2m-s.jpg)
![Solid carbide drill VK6M 2.25mm spiral [shank 3mm]](/files/pic/sverlo/bk6m-2m.jpg)
The data presented in the product description are for reference only and may differ from those indicated by the manufacturer.
