left corner left corner
    China Daily Website

    3-D printing adds wings to aviation

    Updated: 2013-08-13 07:45
    By Cheng Yingqi ( China Daily)

    The C919 will make its maiden test flight at the end of 2015, according to reports, and Zhang Yanzhong, a member of the Chinese Academy of Engineering and also an advisor to the C919 program, told the China News Service that the aircraft has already attracted 380 orders from overseas.

    In addition to its use on the C919, 3-D printing technology has been employed in the design of fighter jets, according to Sun Cong, the designer of the J15 fighter, who said the technique was used in the production of the plane's supporting structure.

    "In the field of aviation applications for 3-D printing, China is making synchronous progress with the developed countries," said Lu. "This technology will be widely used in aviation worldwide, and will be a sharp competitive edge in the field," he predicted.

    Wang Minghua, a professor at Beijing University of Aeronautics & Astronautics who specializes in material sciences, explained that Chinese research has already had a huge impact on the nascent technology.

    "Although scientists in other countries know how to print smaller parts from titanium alloys, we made the technological breakthrough for larger components that can be used in planes," he said.

    Wang and his team developed the methods and equipment that allow lasers to print 5-square-meter components made of titanium alloys, expensive materials whose high tensile strength and lightness make them perfect for use in the aviation industry.

    3-D printing adds wings to aviation

    Visitors examine a model of China's first domestically designed commercial aircraft, COMAC's C919, at an exhibition in Beijing. Scientists used 3-D printing technologies to design components for the plane, such as the example pictured below right. Da Wei / for China Daily

    Reduction of wastage

    "Production of aircraft parts faster and cheaper with 3-D printing," according to Wang.

    Traditionally, components are made by the process of injection molding, where liquid metal is forced into molds at high pressure and then left to cool. The drawback is that the molds have to be designed and made before the parts can be manufactured, which is costly and wastes materials. "For example, the production of a component might involve the use of three metric tons of steel, but after machining, the part may weigh just 144 kilograms," said Wang.

    Printing the parts is a more efficient method, because it avoids the time-consuming process of making and assembling the molds and then refining the cast components into the finished article.

    Traditionally, very large components have been made in piecemeal fashion. The parts are assembled and welded into the finished product at the post-production stage - an approach that can have ramifications in terms of strength and durability. "The strength of a welded part is surely not as good as an integral, one-formed printed component," commented Wang.

    However, he admitted that 3-D printing is not necessarily more efficient in every circumstance. "The larger and the more sophisticated the component, the more competitive advantages 3-D printing has," he said.

    The technique also has applications in a wide range of spheres. For example, military experts are pinning their hopes on a "revolution in logistical support" that may be brought about by 3-D printing.

    In the future, armies may be able to print medicines and other supplies, even basic foodstuffs, on the battlefield, instead of waiting for deliveries from their supply lines, according to a report authored by two military experts in the Science and Technology Daily.

    In addition to the military applications, the technology can also be widely used in high-end manufacturing, including the design of automobiles and home appliances, according to Lu.

    "This new 3-D printing is an efficient tool to help improve manufacturing levels and, as such, can play a major role in upgrading China's high-end industries," he said.

    Previous Page 1 2 Next Page

     
    8.03K
     
    中出人妻中文字幕无码 | 亚洲av无码成人黄网站在线观看| 国产午夜鲁丝无码拍拍| 日本一区二区三区中文字幕 | 无码人妻久久一区二区三区免费丨 | 亚洲中文字幕无码一区二区三区| 一区二区三区无码高清视频| 无码国产乱人伦偷精品视频 | 波多野结衣在线中文| 岛国av无码免费无禁网| 性无码专区无码片| 人妻无码人妻有码中文字幕| 天堂网在线最新版www中文网| 五十路熟妇高熟无码视频| 日韩亚洲AV无码一区二区不卡| 久久精品亚洲AV久久久无码| 久久久噜噜噜久久中文字幕色伊伊| 国偷自产短视频中文版| Aⅴ精品无码无卡在线观看| 日韩精品少妇无码受不了| 国产又爽又黄无码无遮挡在线观看| 天堂а√中文在线| 中文字幕免费高清视频| 欧美激情中文字幕| 亚洲VA中文字幕不卡无码| 亚洲熟妇无码八V在线播放| 西西4444www大胆无码| 日韩经典精品无码一区| 国产精品无码v在线观看| 国产亚洲精品a在线无码| 日韩精品无码一本二本三本| 人妻av无码一区二区三区| 无码囯产精品一区二区免费| 亚洲AV无码成人精品区蜜桃| 色综合久久无码中文字幕| 国精无码欧精品亚洲一区| 少妇人妻无码精品视频| YW尤物AV无码国产在线观看| 久久午夜无码鲁丝片午夜精品| 精品人妻无码专区中文字幕| 亚洲?V无码成人精品区日韩|