how to improve Cutting Efficiency in Titanium Alloy Machining
Titanium alloy machining characteristics:
Titanium alloys are difficult to machine materials. When the hardness of the titanium alloy exceeds HB350, machining becomes particularly challenging. Below HB300, the material is prone to adhesion, making it difficult to machine. However, the hardness of the titanium alloy is just one aspect that makes it difficult to machine. The poor thermal conductivity and high specific heat capacity of the material are the main reasons why the heat generated during machining is not easily dissipated. Most of the heat is transmitted to the cutting edge of the tool, leading to the formation of built-up edge on the tool edge. During the machining process, the tool experiences high thermal and mechanical loads, and the workpiece may deform and then spring back, affecting the machining accuracy of the workpiece.
To address these characteristics, we propose the following methods to improve Cutting Efficiency :
1. Improve the high-temperature and wear resistance of cemented carbide tools, which also enhances the efficiency of machining titanium alloys. This is achieved by using fine-grained cemented carbide materials and specialized composite coatings.
2. Adopt a reasonable tool blade and tool structure to effectively machine titanium alloys. Specifically, using shear-type blade designs with strong chip processing capabilities, excellent chip evacuation, and the ability to disperse and reduce cutting resistance, effectively suppressing vibration and allowing for greater feed rates.
3. Utilize high-pressure cooling to enhance the machining efficiency of titanium alloys. Specifically, using a high-pressure internal cooling structure to supply high-pressure cooling oil/fluid to the cutting zone, effectively removing cutting heat and assisting in chip breaking.