Due to its high hardness and wear resistance, cemented carbide is widely used as a material for various processing tools in industrial production, known as "industrial teeth". For example, cemented carbide drill bit is a common drilling engineering equipment, Zhuzhou Chuangrui Cemented Carbide Co., Ltd. will introduce to you the classification and advantages of cemented carbide drill bits.
As we all know, the correct selection of tungsten carbide drill bits is of great help to improve drilling productivity and reduce the cost per hole. There are four types of tungsten carbide drills that are common in life, they are solid carbide drills, carbide indexable insert bits, welded carbide drills and replaceable cutter bit carbide drills. Each type of drill has the benefit of being suitable for a specific machining premise, so what are the advantages of different cemented carbides?
Solid carbide drill bit, as a kind of drill bit with centering function, has a complete range of types, can be used for deep hole processing, has the advantages of high machining accuracy, can be re-grinding and reuse, and can generally be re-ground 7~10 times. In the process of processing, we can reduce our processing costs. The tungsten carbide indexable insert drill is a discarded insert without centering function, which has the advantages of low cost, wide range and rich variety. The drill bit with tungsten carbide indexable inserts can be machined with a wide range of hole diameters, and the processing depth scale is 2D~5D (D is the hole diameter), which can be applied to lathes and other torsion processing machine tools. The fly in the ointment is that the machining accuracy of this drill bit is relatively low.
Welded carbide drill bits are made by firmly welding a carbide crown on a steel drill body. The self-centering geometric cutting edge type is adopted, the cutting force is small, and the drill bit can be re-sharpened 3~4 times. Its main advantages are very good chip control, good surface finish, and good dimensional and positioning accuracy. It is mainly used in machining centers, CNC lathes or other high-rigidity, high-speed machine tools.
The replaceable cutter head type carbide has a centering function and has a complete variety, and the same tool holder can also be installed with a variety of diameters, which can be used for different processing materials. In addition, in terms of processing efficiency is also remarkable, the machining accuracy is also relatively high, in the processing of steel, the steel drill body can be changed at least 20~30 times, can effectively reduce the production cost.
In actual production, when performing high-speed drilling, it is necessary to have a drill bit with a self-centering function, which requires precision and efficiency. In addition to the centering function, the integral hard drill bit and the replaceable cutter bit carbide drill bit also have high precision, which can generally reach IT6-IT9 grade. Therefore, at this time, we will choose solid hard drill bits and replaceable cutter bit carbide drill bits. In between, the rigidity of the solid carbide drill is superior.
Post time: Jan-24-2024