Tungsten carbide end mill has many advantages, but since tungsten carbide itself is less ductile than high-speed steel, it is prone to chipping when the cutting process is not properly selected or the machine tool accuracy is poor. How to play to its strengths and avoid its weaknesses to fully play its advantages? There is a question of how to use it correctly.
    Tungsten carbide end mill is more sensitive to vibration and tensile stress during use, and if there is a large radial clearance or axial clearance, it is easy to cause damage, so the machine tool should operate in a good state, that is, the machine tool has high accuracy, the tool bar is rigid, the transmission is stable, the feed per revolution is constant, and the cooling is sufficient. The specific requirements are:
1、The precision of the end mill installed on the tool bar should generally meet: the radial clearance≤0.02mm, the axial clearance≤0.01mm
2、As long as it does not affect the drilling depth of the end mill, the handle of the end mill should be fully clamped on the tool bar as much as possible,the tool should be clamped to a length of40mmor so, because a too short clamping length will lead to insufficient clamping force of the tool handle, and a too long overhang will lead to excessive tool.
3、It is necessary to select a reasonable drilling linear speedVc and feed per tooth Sz, Vc linear speed65M/min, Sz can generally be determined at 0.1-0.2mm/ revolution, the specific value should be selected and determined by the user according to the drilling speed, the nature of the material to be milled, the outer diameter, length, number of edges, drilling depth and other factors of the end mill.

The following operations help to reduce or slow down the wear and breakage of the bit:

　　1. When drilling steel parts, please ensure sufficient cooling and use metal cutting fluid

　　2. A good handle steel and guide clearance can improve the accuracy of drilling and the life of the drill bit

　　3. Please ensure the flatness and cleanliness between the workpiece and the tooling

　　4. When drilling thin plates, secure the workpiece. When drilling large workpieces, ensure the workpiece is firmly held.

　　5. The feed should be reduced1/3at the beginning and end of drilling

6.Control of cutting toolRadial play (play amount≤0.02mm　)　

7. The tool should be clamped to a length of40mmor so

8. Change the drill bit in time, do not overuse the drill bit