Cemented carbide drill can improve the service life and cutting speed of the tool. It is used to process brittle hard materials such as cast iron, insulation materials and glass, and can significantly improve the cutting efficiency. Especially for high manganese steel and other difficult materials, hard alloy drill bit must be selected for processing. However, when drilling ordinary steel, the application of cemented carbide drill is greatly limited due to the vibration and instability in the drilling process, which requires further research and exploration.

At present, Cemented carbide drills are mainly made of Mosaic blades, which are flat carbide blades welded to the slotted body. The most common percussion drill bit in daily life is this structure. Blade commonly used YG8, knife body with 9SiCr, after handling hardness of 50-56HRC.

Compared to the tool steel twist drill, the main structural features of the cemented carbide drill are:

1) The tool body has thick core, d=(0.25-0.3)D; To improve the stiffness and strength of drill bit, reduce drilling and strength, reduce drilling vibration, prevent blade cracking.

2) Add tolerance chip groove, so that the drill core does not reduce the amount of chip removal.

3) The amount of inverted cone increases. The blade length is 0.01-1.08mm to reduce friction between the edge and the hole when drilling at high speed.

4) Generally made into double helix Angle. Hard alloy blade front Angle is small, helix Angle is small w=6-38; In order to improve the chip removal conditions, the orientation part w-1520.

Changzhou Haode Tool Co., Ltd. is a professional engaged in carbide cutter milling cutter, drill, non-standard cutter design, research and development, production, sales of enterprises. Products are widely used in automobile parts, wind power transmission, mold, IT and other advanced machining fields. With excellent technology, advanced equipment and rich experience in tool manufacturing, the company has accumulated a good reputation in the industry. At present, it is supporting many famous 500 companies at home and abroad, such as FAW-Volkswagen, Bosch Auto parts, Shanghai GM, etc. The company has all kinds of imported German tool grinding machine nearly 20 sets, the use of imported alloy rod material from Europe, Switzerland Balchas coating, monthly production of 100,000 tools. Localization of high quality imported tools, established a perfect tool manufacturing management system to ensure the stability of tool quality.