Trends such as downsizing but also increasingly filigree components, for example in medical technology, the watch and food industry or in mechanical engineering, ensure that the market for micro drills is growing. Companies are responding to this with a steadily growing range of tools. The manufacturer Walter is now showing its latest additions: the Walter DB133 and DB131 Supreme solid carbide drills. The DB133 Supreme deep-hole drill enables exceptionally high surface quality, tool life and process reliability, especially in combination with the fully coated DB131 Supreme micro pilot drill. Chip breaking is optimized by special flute geometries and ensures that short chips are achieved which are easy to remove, providing universal applicability.
In addition to the geometry, another decisive factor for the performance of the two solid carbide drills is that the point angles and diameter tolerances (p7 / h7) of the two drills are matched to each other so that the pilot drill can give the deep hole drill the best results. New processes increase tool precision here, for example for rounding the main cutting edges. This is important in tool and mold making, for example, where fine tempering channels that run close to the surface often have to be inserted. Lateral "running" (much more common with HSS drills than with solid carbide drills) can lead to massive damage to the component here; they also drill around 6 times faster than a single-lip drill, for example.
Both the DB131 Supreme and the DB133 Supreme are reconditionable, the solid carbide drills are available from Ø ≥ 2 mm; Walter offers intermediate dimensions with a maximum delivery time of 3 weeks via Walter Xpress Service.