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Conditions and stability of titanium alloy parts processing

by:QY Precision      2020-03-15
Titanium alloy parts have the characteristics of low density and good corrosion resistance, so they have also become ideal structural materials for aerospace engineering. However, there are also many factors that affect its processability at the same time, because the metallurgical properties and material properties of titanium alloy may have a serious impact on the cutting effect and the material itself. Processing conditions for titanium alloy parts processing 1. Compared with most other metal materials processing, titanium alloy parts processing is not only more demanding, but also more limited. However, if the appropriate tool is selected and used correctly, and the machine tool and configuration are optimized to the optimal state according to the processing requirements of titanium alloy parts, these requirements can be fully met, and get satisfactory high performance and perfect results. Many problems encountered in the processing of traditional titanium alloy parts are not inevitable. As long as the influence of titanium properties on the processing process is overcome, success can be achieved. 2. Titanium alloy has excellent strength- Weight ratio, its density is usually only 60% of steel. The elastic coefficient of titanium is lower than that of steel, so the texture is harder and the deflection is better. Titanium is also better resistant to corrosion than stainless steel and has low thermal conductivity. These attributes mean that titanium alloy parts produce higher and more concentrated cutting forces during processing. It is prone to vibration and causes tremor during cutting; Moreover, it is easy to react with the cutting tool material during cutting, thereby aggravating the wear of the Crescent. In addition, its thermal conductivity is poor. Since the heat is mainly concentrated in the cutting area, the tool for processing titanium metal parts must have high heat hardness. About the stability of titanium alloy parts processing 1. Some machining workshops find that titanium metal is difficult to process effectively, but this view does not represent the development trend of modern machining methods and tools. The reason why it is difficult is partly because titanium metal processing is a new technology and lacks experience to learn from. In addition, difficulties are usually related to expectations and operator experience, especially some people have become accustomed to the processing of materials such as cast iron or low alloy steel, and the processing requirements of these materials are generally very low. In contrast, it seems more difficult to process titanium metal because the same cutter and the same rate cannot be used during processing, and the cutter life is also different. 2. Even compared with some stainless steel, titanium metal processing is still difficult. Of course, we can say that different cutting speeds, feed rates and certain preventive measures must be taken to process titanium metals. In fact, compared with most materials, titanium metal is also a material that can be directly processed. As long as the titanium workpiece is stable, the clamping is firm, the machine tool is selected correctly, the power is appropriate, the working condition is good, and the ISO 50 spindle with short tool suspension is equipped, all problems will be solved--As long as the cutting tool is correct. 3. However, in actual milling, the conditions required for titanium alloy parts processing are not easy to meet, because ideal stability conditions are not always available. In addition, many titanium parts are complex in shape and may contain many fine or deep cavities, thin walls, inclined surfaces and thin brackets. If you want to successfully process such parts, you need to use large suspension and small diameter tools, which will affect the stability of the tools. When processing titanium metals, potential stability problems are often more likely to occur. The above is about the conditions and stability of titanium alloy parts processing. In future work, we can synthesize the above-mentioned key points and carry out reasonable parts processing.
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