Having a high-quality Cemented carbide drill is only half the battle. Correct use and maintenance are the keys to fully exerting its performance and extending its service life. Improper operation can quickly lead to chipping, wear and even breakage of the Cemented carbide drill. Master the following tips to make your investment worth more than its price.

1. Correct installation and clamping

Make sure the drill bit is firmly and correctly clamped in the jacket or the tool holder. Any slight jumping or loosening can lead to inaccurate drilling dimensions, rough hole walls, and easily cause premature damage to the drill bit. The best results can be achieved by using high-precision clamping systems (such as hydraulic tool holders or heat shrink tool holders).

2. Select appropriate cutting parameters

Rotational speed and feed rate: Cemented carbide drills are suitable for high-speed machining, but they must be matched with an appropriate feed rate. Slow feed will lead to an increase in frictional heat generation, causing the drill bit to "grind" the workpiece rather than cut it. If the feed is too fast, it may exceed the bearing capacity of the drill bit, resulting in chipping. Please refer to the parameter table provided by the tool supplier and make fine adjustments according to the actual situation.

Cooling and lubrication: Adequate cooling is of vital importance. Using high-quality cutting fluid can effectively lower the cutting temperature, reduce tool wear, and help remove chips. For some coated drill bits, although dry cutting can be performed, the assistance of coolant always leads to better results and a longer service life.

3. Pay attention to the shape of the chips

Chips are the "barometer" of the processing status. Ideally, the chips should be in a continuous, uniform spiral shape or a short "C" shape. If long and tangled chips appear, it indicates that the chip removal is not smooth or the feed rate may be too low. If the chips are in powder form or have darkened in color (blue-purple), it indicates that the cutting temperature is too high and the parameters or cooling method needs to be adjusted.

4. Timely wear inspection and regrinding

Regularly inspect the cutting edge of the Cemented carbide drill. When it is found that the drilling force has significantly increased, the quality of the hole wall has declined or burrs have appeared, it may indicate that the drill bit has become blunt. Never continue to use a completely worn drill bit, as this will damage the workpiece and increase the difficulty and cost of regrinding. Regrinding must be carried out by professional tool grinders and experienced operators to ensure the restoration of its original geometric accuracy.