Cutting of Titanium Alloy
Titanium alloy is an important structural material, with the characteristics of high specific strength and good corrosion resistance. Due to the very limited machinability of titanium alloy, its cutting process includes milling, turning and electric spark methods. Among them, milling is the main machining method, which has great adaptability, high machining accuracy, and relatively small machining load. In titanium alloy cutting, milling is the main cutting process. Therefore, when cutting titanium alloy, we need to pay attention to the appropriate cutting parameters, cutting tools and cutting fluids.
Cutting parameters
The cutting parameters in titanium alloy milling are related to cutting depth and feed speed. When the cutting depth is small, the abrasive particles on the cutting edge of the tool have little direct effect on the machined surface, which can reduce the force applied to the cutting edge of the tool and reduce its wear. Therefore, the cutting depth should be small. At the same time, the speed of the feed should also be small. The cutting force on the cutting edge of the cutting tool is proportional to the feed speed of the workpiece, so the feed speed should be low.
Cutting Tool
When milling a titanium alloy, we should choose a cutting tool with higher hardness and wear-resistant. Carbide alloy cutting tool has high hardness, wear resistance and excellent thermal conductivity. In order to reduce the loading force on the cutting edge of the tool, the tool should have a positive rake angle. Therefore, the cutting blade should have a positive rake angle of around 15°-25°.
Cutting Oil
When machining titanium alloy chips, the cutting oil used to cool and lubricate the cutting edge is of great importance. Cutting oil has the functions of cooling and lubricating the machined surface, improving the surface finish and preventing the adhesion of chips. Therefore, when cutting titanium alloy, a cutting oil with low viscosity should be used to lubricate the cutting tool.
Conclusion
The cutting of a titanium alloy involves the selection and control of certain cutting parameters, such as cutting depth and feed speed, cutting tools, as well as the choice of cutting oil for cooling and lubrication. When selecting the cutting parameters, it is necessary to pay attention to selecting the conditions suitable for the titanium alloy and meeting the requirements for machining accuracy. At the same time, the correct selection and sharpening of the cutting tool are the key factors for safe and efficient machining of the workpiece.
