Therefore, it is best to sharpen these bits at the appropriate time. If you use blunt bits, the broken part can damage your fingers, eyes and face. When you sharpen coated drill bits, their coat will remove, and it will act like normal cobalt drill bits.
But if your cobalt drill bit has been coated with TiN, TiCN or TiAlN, do not try to re-sharpen it. When you see, the chip size is less than 2mm, it is time to resharpen the cobalt drill bit. In addition, the lifespan of a bit depends on the type of bit used and the drilling technique used. A high level of melting point helps to do the long-period drilling process. Therefore, it can be sharpened when it becomes blunt. And during the production process of cobalt drill bits from HSS drill bits, there has no outer surface painting process.
These coatings are applied on the drill bit in order t o improve the service life, and thermal resistance and reduce the friction between the drill bit and the cutting surface. TiAlN – Titanium aluminum nitride (Violate color coating).TiCN – Titanium carbon nitride (Grey color coating).TiN – Titanium nitride coating (Golden color coating).Titanium, Aluminum, Nitrogen, and Carbon are used as the mixed compound layer on the drill bit. Normally, coated cobalt drill bits are different in color. Coated Cobalt Drill BitsĬobalt drill bits are coated with titanium compounds in order to improve their physical characteristics. That ability is due to the mixing of cobalt. Of course, cobalt drill bits have more attractive features. If something is going to take a long time to drill, these drill bits can be used to get it done in a short amount of time without a lubricant in between. Suitable for use in high-temperature conditions due to high boiling and melting points. The melting point of Cobalt is 1495☌, and its boiling point is 2927☌. This is because they have a tendency to break higher than M35 drill bits. M35 drill bits can be mounted to handheld devices without fear, but M42 drill bits cannot be used as such.
M35 Cobalt drill bits contain approximately 5% cobalt alloy, and M42 cobalt drill bits contain approximately 8% cobalt alloy. Among those types of drills, M35 and M42 are the most common Cobalt drill bits. This composition helps to give a high resistance.īased on the percentage of cobalt in the drill bit, can be identified the different cobalt drill bits. Cobalt was mixed typically between 5 – 8%. Cobalt drill bits are a combination of steel or another alloy mixed with a small percentage of cobalt. The tip has 135 degrees angle.Ĭobalt Drill Bit M35 and M42 Cobalt Drill BitsĬobalt drill bits are not made from pure cobalt. Hence you can identify it even wet environment easily.Ĭobalt drill bits are harder than the regular HSS (high-speed steel) drill bits and can be sharpened relatively easily with cutting fluid while retaining their strength and durability. As well as, cobalt drill bits do not rust. Cobalt drill bits are not bright golden colors like titanium-coated drill bits. Cobalt drill bits can be identifiedby their dull golden color.
#Cobalt drill bits quotes how to
So let’s keep reading on! How to Identify the Cobalt Drill Bits?ĭrill bits can be identified by their color and shape. In this guide, you can find all in detail about cobalt drill bits. More than that we should know how to use cobalt drill bits, sharpening, durability, identification including material, and many more. These bits are used to drill the hardest materials, such as cast iron. 5% cobalt include in M35, and 8% is included in M42 cobalt drill bits. Cobalt has mixed between 5-8% percentages. Cobalt drill bits are made with a combination of steel or another alloy mixed with a small percentage of cobalt.
0 kommentar(er)
