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3D printing technology gradually shows its advantages, and many parties join hands to realize the space dream!

3D printing technology gradually shows its advantages, and many parties join hands to realize the space dream!

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3D printing technology gradually shows its advantages, and many parties join hands to realize the space dream!

In recent years, the global 3D printing industry has basically formed a development trend dominated by developed countries and regions such as the United States and Europe, while Asian countries and regions are catching up. China launched the research on 3D printing technology in the late 1980s. After years of development, the pace of industrialization has been significantly accelerated.

At present, China's 3D printing industry has entered a period of rapid development with great potential for development. According to the "analysis report on market demand and investment potential of China's 3D printing industry in 2018-2023" released by forward-looking industrial research institute, the scale of China's 3D printing industry has been expanding continuously since 2014, and reached 1.67 billion us dollars in 2017.

With the continuous breakthrough of 3D printing technology, the technology is gradually accelerating the landing in many fields, including biomedicine, aerospace, mechanical equipment and so on. Among them, the application of 3D printing technology in the aerospace field has brought about many new changes in the aerospace field.

Among various 3D printing technologies applied in aerospace, laser metal 3D printing technology is widely recognized by insiders. Laser metal 3D printing is known as "the pearl in the crown of 3D printing". It is one of the most cutting-edge technologies with the highest threshold, the best prospect and the best prospect. In 2015-2016, global sales of laser metal 3D printers have maintained double-digit growth, which is a "miracle flower" in the field of industrial 3D printing. Because laser metal 3D printing can quickly produce products that meet the requirements and are light in weight, it has a great opportunity in the field of aerospace.

For example, in September 2016, GE spent $1.4 billion to buy two metal 3D printing giants, Arcam of Sweden and SLMSolutions of Germany, to accelerate the layout of 3D printing aeroengine parts business, which is extremely beneficial to reduce energy consumption and shorten the production time of parts.

On the one hand, due to the large demand for large-size precision components in the aerospace field, 3D printing technology can be used to determine the size of parts more accurately. A 3D printed aero-engine hollow blade with a total height of 933mm was displayed by a company in xi 'an at the 2016 zhuhai air show. Under the same conditions, it may be difficult to realize the production and manufacturing of this hollow blade by using general technology, while the required products can be quickly and accurately printed by using 3D printing technology.

On the other hand, 3D printing technology can realize the micron and nano level of corresponding products. With the same strength and hardness, 3D printing technology can greatly reduce the volume and weight of products. Researchers at Harvard University and the university of Illinois have 3d-printed nano-sized lithium batteries smaller than a grain of sand to prove the point, and the "petite" lithium battery can provide no less energy than an ordinary cell phone battery.

In order to standardize the application of 3D printing technology and other cutting-edge technologies in the aerospace field, the industry has also taken actions.

Recently, the international association of automotive engineers aerospace materials additive manufacturing committee issued the first set of industry additive manufacturing materials and process standards. This standard includes four specific elements, mainly involving powder bed based laser melting (LPBF) additive manufacturing technology. According to industry analysis, the standards released this time can support the certification of key components of aerospace equipment, and ensure the integrity and traceability of material property data within the supply chain.

The standard has sparked a heated debate in the industry about why 3D printing technology can play a significant role in aerospace.

First, 3D printing technology can improve the utilization rate of materials, save scarce strategic materials and reduce manufacturing costs. Generally speaking, the aerospace manufacturing field mostly USES expensive strategic materials, such as titanium alloy, nickel-based superalloy and other metal materials. Using traditional manufacturing methods, the utilization rate of materials is very low, generally no more than 10%, and the adoption of 3D printing technology can improve the utilization rate of materials and reduce production costs.

Second, 3D printing technology can optimize the structure of parts, reduce weight and increase the service life of parts. For aerospace weapons and equipment, weight loss is a very important topic. After weight reduction, the flight equipment has higher flexibility during flight. At the same time, 3D printing technology can save fuel and reduce flight costs.

Third, 3D printing technology can shorten the research and development cycle of new aerospace equipment and promote the early launch of new aerospace equipment. 3D printing technology has greatly shortened the manufacturing process of high-performance metal parts, especially high-performance large-structure parts. In addition, the product development and manufacturing cycle will be shortened.

At present, compared with foreign countries, China still has some gaps in the field of aerospace technology research and development, weapons and equipment manufacturing and other aspects. Only by working together can we realize the great space dream. I believe that in the near future, a number of new and high technologies, including 3D printing, will continue to mature, and China's aerospace industry will achieve a great leap forward!