Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is a rotary cutting tool, often multi-pointed. The bit is forced against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the work-piece, cutting off chips (swarf) from the hole as it is drilled.
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Method
Under normal usage, swarf is carried up and away from the tip of the drill bit by the fluting of the drill bit. The cutting edges produce more chips which continue the movement of the chips outwards from the hole. In order to support the drilling process a cutting fluid can be used to prolong the tool's life by cooling and lubricating the tip and chip flow. Coolant may be introduced via holes through the drill shank.
Drilling features
Benefits
- Excellent tolerances.
Drawbacks
- More expensive as compared to laser cut or plasma cut holes.
Recommendations
To be used when tolerances are a key question.
Our offer
SSAB can offer drilling services from our own centers globally and in addition we have a service partner network that can be utilized. Our offer includes:
- Holes 6-40 mm
- Threading M8-M30
In many of our service centers we have the possibility to combine drilling of parts with other metal processing methods, for example cutting, press brake bending and milling, to fulfil your complete requirements.
