China’s 3D Laser Direct Manufacturing technology beyond the U.S.

Discussion in 'China' started by zhlee, May 28, 2013.

  1. zhlee

    zhlee Regular Member

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    China’s 3D Laser Direct Manufacturing technology beyond the U.S. and Japan



    Recently emergent 3D printing technology is hot in world wide.In fact, 3D printing is one of 3D rapid shaping technologies, which can be broadly divided into seven categories, including 3D printing, laminated object manufacturing, selective laser sintering, selective laser melting, Electron beam melting, powder bed and inkjet head 3d printing and so on.
    The AVIC LASER is a subsidiary of AVIC Heavy Machinery as AVIC LASER’s 30% stake held by the AVIC Heavy Machinery. The AVIC laser production technology team was established as early as 2000 when it has been put into R&D in “3D Laser Direct Manufacturing technology”. At first its study just followed the United States. In 2005, the United States Company Aeromet, which engaged in the titanium alloy laser molding manufacturing, never been able to produce large-size complex titanium alloy components for the performance to meet the requirements on main load-bearing parts, then has to closed down.
    However the AVIC LASER team does not give up. Especially by the continued support of the Chinese military funds, and after several years of R&D, it finally independently breaks through several world class technical problems, such as “inert gas protection system”, “thermal stress discrete”, “defect control”, “metal lattice growth control” and produces a 4-meter size and complex structure product whose performance meets the main load-bearing structure requirements and has showed its great commercial value.
    In Japan mechanical show, Japanese KOIWAI displays its power generation equipment radiators which produced by the technology imported from Sweden “Acram”‘s “EBM” (Electron Beam Melting). Seen from the product picture, the radiator size in less than 1 meter. Besides, the generation radiator is not main load-bearing component and its structural strength and fatigue life performance is greatly backward from the AVIC LASER’s. Japan still has big technology gap in this area.
    AVIC LASER’s 3D molding technology, which estimated by the Ministry of Finance’s State-owned intellectual property valuation, worth more than 100 million yuan. The project is also expected to be the national technology invention award which represents the highest honor in the field of national technical achievements.

    After 10 years of theory and technology accumulation, AVIC LASER overcome the difficulty of large structural parts 3D Direct Manufacturing technology on high temperature metal, including titanium alloy, high-strength steel, high temperature & high strength steel. Compared with conventional processes, it saves 90% of the very expensive raw materials, and creates a myth of ultra-high 90% gross margin in manufacturing.
    Assuming processing 1 ton weight titanium alloy complex structural parts, a traditional process cost is about 25 million yuan, and Laser Direct Manufacturing costs only 1.3 million, only 5% of the traditional process.

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  3. Keshav Murali

    Keshav Murali Back to studies :( Senior Member

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    Link please

    If link is not provided, this thread shall be reported.
     
  4. zhlee

    zhlee Regular Member

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  5. Keshav Murali

    Keshav Murali Back to studies :( Senior Member

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  6. zhlee

    zhlee Regular Member

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  7. J20!

    J20! Senior Member Senior Member

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    I don't know about being ahead of the US and Japan, but this is a display of a large 3D printed titanium component of the J31's rear end, the largest structural 3D printed fighter jet piece:

    China shows off world largest 3D printed titanium fighter component[/SIZE]

    At the 16th China International High-tech Expo which took place during May 21-26, 2013 in Beijing, AVIC Laser, a subsidiary of AVIC Heavy Machinery, showed off the world's largest titanium aircraft critical component produced using 3D Laser Direct Manufacturing technology. AVIC Laser displayed, for the first time, a large 3D printed titanium part for J-20 or J-31 stealth fighter. According to AVIC Laser, their 3D Laser Direct Manufacturing technology has been used in producing 7 kinds of aircraft, including Y-20 Strategic Airlifter, J-15 carrier-borne fighter, C919 airliner and next generation stealth fighters. The J-15's chief designer confirmed in March that printable components are being used "in major load-bearing parts, including the [J-15's] front landing gear."

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    AVIC Laser was established in 2000. Funded by Chinese government, especially the military, the team has solved several technical difficulties during the first seven years' research and development of the technology, such as "inert gas protection system", "defect control", "metal lattice growth control" etc. On Jan.18, 2013 AVIC Laser won the national technology invention award in Beijing.

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    The 3D Laser Direct Manufacturing technology could lower the cost of titanium parts to only 5 percent of the original. It costs about 25 million yuan ($4m) to process one ton titanium alloy complex structural parts using traditional method, but with 3D Laser Direct Manufacturing it costs only 1.3 million ($212k).

    Currently AVIC Laser's 3D Laser Direct Manufacturing technology can be used to make large structural parts using titanium alloy, high-strength steel, high temperature & high strength steel. Compared with conventional processes, this technology could save up to 90% of materials and costs. And if the forged titanium parts on an American F-22 were made using the Chinese 3D printing technology, around 40 percent of the weight can be reduced.

    It's not only military planes that will benefit from this, the Northwestern Polytechnical University of China has also used the same technology to print out a five meter-long titanium wing beam for the C919 passenger plane which is expected to be put into commercial operation in 2016.

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