The application of hole-machining in the hardware manufacturing process is a very common one, and also an important link. The bore diameter often plays a role related to the precision of fixation. If the aperture does not meet the standard, the whole product will be directly judged as defective. So it is very important to choose the right twist drill bit. What kind of twist drill bit is used to process common metal products?
Processing common die steel, 45# steel and stainless steel, you can choose cobalt high speed steel bit and alloy drill bit for drilling. If you have a bench drill, drilling machine and other equipment, you can use cobalt high speed steel twist drill bit. If you have a machine tool and used alloy drill bit before, you can also consider using alloy drill bit.
Cobalt high speed steel twist drill bit and alloy drill bit are the two most suitable choices for processing steel parts. However, they are different from each other in terms of their characteristics. The high speed steel twist drill bit with cobalt is not easy to crack, but the hardness cannot be compared with alloy drill bit. Therefore, the wear resistance will be worse. But in general, as long as the drill point of grinding twist drill bit is used, the cost performance of cobalt containing high speed steel twist drill bit is very high.
The alloy bit is of high hardness, and the wear-resistant properties of the processed steel are good in all aspects, but the only drawback is that it is too brittle and easy to crack. People who don’t often use alloy drill bit must be hard to get used to it. Therefore, it is recommended to use cobalt high speed steel twist drill bit as the main tool. If the cobalt containing high-speed steel twist drill bit is not able to overcome, it can also use high quality alloy bit.
Post time: Mar-26-2022