Is the Color of the Drill Bit Related to the Quality?
Drilling holes on different materials is the commonly used steps in industry and DIY in daily life. Hss drill bits are made of HSS4241, HSS4341, HSS6542(M2), M35, M42, but the drill bits also have different colors, such as gold, white, and black, etc., so what is the difference between drill bits of different colors for drilling? Is there a direct relationship between the quality of the color of drill bits?
First, let me explain the difference between the quality and color of the drill bits.
In most cases, the color has nothing representative with the quality of the drill bit, and they cannot be equated. Sometimes the color is just a surface treatment, sometimes the color is because of the difference in processing technology. If you want to differentiate the quality of the drill bit from the surface finish, then you can only use it as a reference. After all, even if the drill bit is of poor quality, it is coated with a white or yellowish-brown coating. On the surface, there is no difference.
About the surface finish of the drill bit
According to the production process, drill bits are divided into rolled and fully ground drill bits. The quality of fully ground drill bits is better than that of rolling. According to the material, the drill bit is made of high-speed steel, generally divided into HSS4241, HSS4341, HSS6542(M2), M35, M42, among which the quality of HSS4241 is the most general and the quality of M42 is the best. Generally, the drill bits are white ones, and the quality is not bad. The black drill bit is processed in ammonia and water vapor to improve the durability of the drill bit. However, some businesses only do surface treatment to make it black. Their quality can be said to be very poor. The drill bit is very easy to wear and is not durable at all. As for the yellow-brown (Amber) cobalt-containing drill bits, they are generally very good quality drill bits. The material is generally M35, which is wear-resistant and durable.
So in summary, color cannot be used as the only criterion for judging the quality of drill bits.
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Post time: Apr-22-2024
