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Process of vacuum heat treatment in aerospace industry

Vacuum heat treatment is a metal processing process that uses a vacuum environment to process metal materials. This treatment has many advantages, including the ability to increase material purity, reduce oxidation and contamination, and improve material performance. Vacuum heat treatment has wide applications in many fields, including aviation, automobiles, semiconductors and medical devices.

The role of vacuum heat treatment in the aerospace field is mainly reflected in the following aspects:
1. Prevent oxidation and decarburization of parts: During the heat treatment process of high-temperature alloys, oxidation and decarburization occur easily due to metal contact with elements such as oxygen and carbon at high temperatures, resulting in reduced performance of parts. Vacuum heat treatment controls the gas composition in the environment to prevent parts from coming into contact with oxygen, carbon and other elements during the heating process, thereby avoiding oxidation and decarburization of parts.
2. Keep the surface of the part bright: Vacuum heat treatment can keep the surface of the part bright. This is because there is no oxygen and other impurities in the vacuum environment, which avoids oxidation and contamination of the surface of the part.
3. Achieve precision shape and size control: Vacuum heat treatment has the characteristics of high precision and high efficiency, and can achieve precision shape and size control, thereby meeting the requirements for part accuracy and performance in the aerospace field.
4. Improve the quality and life of parts: Vacuum heat treatment can deeply tap the potential of key components, ensure and improve the quality and life of key components, and maximize the potential of materials, thereby meeting the requirements of long life, high performance, and structural weight reduction of key components. technical requirements.
In short, the role of vacuum heat treatment in the aerospace field is mainly reflected in preventing oxidation and decarburization of parts, keeping the surface of parts bright, achieving precise shape and size control, and improving the quality and life of parts.

In the aerospace field, vacuum heat treatment is widely used in the manufacturing of aircraft and spacecraft because it can improve the performance and purity of materials. For example, turbine blades in aircraft engines need to have high strength and high temperature resistance, and vacuum heat treatment can give them better mechanical properties and higher oxidation resistance. In addition, vacuum heat treatment can also be used to manufacture solar panels for spacecraft, making them have higher photoelectric conversion efficiency.
1. Prepare materials: Select metal materials suitable for the aerospace field, and perform surface treatment, such as cleaning and preheating.
2. Place the material into the vacuum chamber: Place the material into the vacuum chamber and close the vacuum chamber door.
3. Heating and cooling: The temperature in the vacuum chamber is raised to the required heat treatment temperature through the heating device and maintained for a certain period of time. The temperature is then reduced to room temperature by a cooling device.
4. Detect and record data: Detect and record material properties during processing, such as hardness, tensile strength and microstructure, etc.
5. Analysis results: Analyze according to the test results to determine whether the expected heat treatment effect is achieved.
6. Adjust parameters: Adjust heat treatment parameters, such as temperature, time and cooling rate, according to the analysis results.
7. Repeat the operation: If multiple heat treatments are required, repeat the above steps.
8. Deliver finished products: Deliver the processed materials to customers or for subsequent processing.
In short, vacuum heat treatment is an advanced metal processing technology, which has broad application prospects in the aerospace field. By using this process, the performance and quality of materials can be significantly improved to meet the stringent requirements of aircraft and spacecraft.