Tungsten Carbide Drill Bit Selecting
- Details
- Category: Tungsten Information
- Published on Friday, 07 November 2014 16:45
Tungsten carbide drill bit is a kind of cutting tool used in the drilling of through-holes and blind holes in solid materials, or the chambering of the existing holes. During tungsten carbide drill bit selecting, the factors as follows should be taken into consideration.
I. Machining stability
When selecting tungsten carbide drill bits, the stability of machine tools should be considered. And therefore, the principal axis, fixture of machining tools should be tested. In addition, the stability of drill bit itself should also be considered.
II. Generally speaking, the smaller the hole diameter is, the smaller the tolerance is. The solid tungsten carbide drill bit, with the highest machining precision, is the best choice for machining high precision holes, while the welded tungsten carbide drill bit is more suitable for the machining of holes of common precision requirement. Tungsten carbide indexable drill bit, with lower machining precision, is generally used in the machining of holes with low precision requirement.
III. Machining cost of each hole
The productivity and machining cost of each hole are the most important factors in drilling machining. In order to improve productivity, tungsten carbide drill bit manufacturers are dedicated to the studies on machining methods of many operation sequences and develop drilling tools with higher feeding rate and higher revolving speed.
IV. Chip removal and cooling fluid
Chip removal problem should be attached much more importance on the tungsten carbide drill bit selecting. In fact, the most commonly seen problem in drilling is chip removal difficulty. In addition, proper cooling fluid types, flow and pressure that match the drill bit diameter should be chosen.
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