CNC high-speed milling of titanium alloy parts

High-speed CNC machining of titanium alloy parts

In milling, an important characteristic of titanium alloys is extremely poor thermal conductivity. Due to the high strength and low thermal conductivity of titanium alloy materials, extremely high cutting heat (up to 1200°C if not controlled) is generated during processing. The heat is not discharged with the chips or absorbed by the workpiece, but is concentrated on the CNC cutting edge. Such high heat will greatly shorten tool life.

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Titanium alloy implant parts

How to choose the tool material for CNC machining of titanium?

CNC machining of titanium alloys should start from two aspects: reducing cutting temperature and reducing adhesion. Select tool materials with high thermal hardness, high bending strength, good thermal conductivity, and poor affinity with titanium alloys. YG cemented carbide is more suitable. Due to the poor heat resistance of high-speed steel, tools made of cemented carbide should be used as much as possible. Commonly used cemented carbide tool materials include YG8, YG3, YG6X, YG6A, 813, 643, YS2T and YD15.

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CNC turning of precision stainless steel parts

Set tool parameters for CNC machining titanium

Set the geometric parameters of turning and milling titanium tools to improve the product quality of titanium alloy parts. Products are delivered quickly and on time.
(1) The rake angle of the tool γ0: The contact length between titanium alloy chips and the rake face is short. When the rake angle is small, the contact area of the chip can be increased, so that the cutting heat and cutting force are not excessively concentrated near the cutting edge. Improve the heat dissipation conditions, and can strengthen the cutting edge and reduce the possibility of chipping. Turning titanium generally takes γ0=5°~15°.

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Precautions for machining titanium

Pay attention to the problem of machining titanium alloy

In the process of CNC turning and milling titanium alloy, the matters that should be paid attention to are:
(1) Due to the small modulus of elasticity of titanium alloy, the clamping deformation and force deformation of the workpiece during machining are large, which will reduce the processing accuracy of the workpiece; The clamping force should not be too large when the workpiece is installed, and auxiliary support can be added when necessary.

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