Which two types of alloy drills are often used?

There are many kinds of drill bits, with various materials and types. Among them, alloy drill bits, as a kind of drill bits, are mainly made of alloy materials. Although they look small, they are indeed very useful. Generally, they can be used according to customized by the user. Often used are the following two categories:

(1) Integral alloy drill bit. This kind of drill is generally small in diameter, because the cemented carbide material is expensive, and the effective part of the drill accounts for more than half of the overall tool, and other parts cannot generate value. In order to reduce waste, the diameter of alloy drill bits is generally relatively small. The maximum diameter of our alloy drill bits is 20mm.

(2) Alloy drill indexable inserts Drills equipped with carbide indexable inserts can process a wide range of apertures and a processing depth range of 2D to 5D, which can be used in lathes and other torsion machining machines. This kind of drill bit has poor sharpenability and low machining accuracy, so this kind of drill bit is rarely used in our company.

The surface of the high-quality alloy drill bits we produce will be treated with coating, such as aluminum-chromium nitride (AlCrN) coating. Sex up to 1100 degrees Celsius. After coating, the color of the drill bit is blue-gray. After coating, the alloy drill bit can process low alloy steel and high strength steel.