What effects do different chip breakers have on the processing of carbide inserts? How to choose the

Introduction

Tungsten carbide blades are widely used in cutting tasks due to their excellent hardness, toughness, and wear resistance. However, the performance of tungsten carbide blades can be affected by the design and features of the chip groove. Different types of chip grooves can provide different benefits and drawbacks. Therefore, it is essential to understand the role of chip grooves in cutting and to choose the appropriate chip groove for the specific task. In this article, we will discuss the effects of different types of chip grooves on the processing of tungsten carbide blades and provide guidelines for selecting the proper chip groove.

Types of Chip Grooves

The chip groove is a channel on the surface of the tungsten carbide blade that guides the chips generated during the cutting process. There are several types of chip grooves, including straight, helical, and multiple flute grooves.

Straight Chip Grooves

Straight chip grooves consist of a single channel cut straight along the length of the tungsten carbide blade. This type of chip groove is the simplest and most common design. Straight chip grooves are suitable for cutting operations that produce long chips, such as turning and boring. The major advantage of straight chip grooves is the ease of chip evacuation. The straight channel allows the chips to flow out of the groove easily, preventing the chips from clogging the cutting edge, and reducing the risk of tool breakage. However, straight chip grooves may create vibration and noise during cutting due to the large contact area between the chip and the channel, leading to reduced surface quality.

Helical Chip Grooves

Helical chip grooves consist of a spiral channel cut into the tungsten carbide blade surface. This design is suitable for cutting operations that produce short chips, such as milling and drilling. The spiral channel guides the chips away from the cutting edge in a controlled manner, which reduces the cutting forces and heat generated during the process. This leads to improved tool life and surface finish quality. However, helical chip grooves may be more difficult to evacuate, as the spiral channel may trap the chips if the feed rate is too high.