How is titanium alloy processed?

Since the discovery of titanium in 1790, mankind has carried out a century of painstaking exploration in order to obtain the special properties of titanium. In 1910, titanium was first manufactured by humans, but the application of titanium alloy processing was difficult and long. It was not until 1951, 40 years later, that industrial production was finally realized.

The development and application of titanium alloys in my country began in the 1960s.

Titanium alloy has the characteristics of high specific strength, corrosion resistance, high-temperature resistance and fatigue resistance. Titanium alloy of the same size only accounts for 60% of steel, but its strength is higher than that of alloy steel. Titanium alloys are widely used in medical fields because of their good properties, such as artificial joints, bone fixation devices, dentures, etc.

Titanium alloys are widely used in aircraft structural parts and heat-resistant parts. It is one of the main structural materials for modern aircraft and engines, and is called "space metal".

But titanium alloy is like a strong horse. It must be tamed to reach the goal of thousands of miles a day. So how can we "tame" titanium alloy?

Titanium alloy has poor thermal conductivity, high hardness and easy rebound. The difference in thermal conductivity is reflected in the heat generated by friction during processing. If it is other metals, it will quickly spread to the whole, such as the pot we usually use.

However, due to the poor thermal conductivity of titanium alloys, heat will continue to accumulate, making the titanium alloy sticky, making the tool brittle, severely worn and even damaged, just like cutting chewing gum with a knife.

Titanium alloys have high hardness, and aluminum alloy materials for airplanes are easy to process: one meter of titanium alloy materials can process 25 meters of aluminum alloy materials, which is economical, but the strength of aluminum alloys is difficult to meet the requirements. Therefore, although the processing of titanium alloys is more difficult , But it is still necessary. In addition, titanium alloy springback seriously affects the machining accuracy of parts, especially thin-walled complex parts.

Powerful milling, shallow cutting high-speed milling, etc. make titanium alloy parts processing faster and more stable. In order to tame these horses, we developed the superplastic forming method of titanium alloy sheet processing, the compressed air stirring of chemical milling treatment and the rapid welding method of small current.

Titanium alloy can be used in aviation equipment manufacturing. I believe that with the continuous research and exploration of the majority of scientific and technological workers in the aviation industry, our understanding of titanium alloys will gradually deepen. For the domestication of titanium alloys, we will have more means to make greater contributions to my country's aviation industry!
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