The headlights and frames of the C919 passenger aircraft that has just been installed off the assembly line are 3D printed. The antenna bracket of the "Pujiang 1" satellite that was successfully launched in September this year is also printed in 3D... The 17th China International Industry Fair is being held in Shanghai. , shows that China's 3D printing technology has made significant progress.
In the technology exhibition area of ​​the China Industry Fair, Beijing National University of Aeronautics and Astronautics National Engineering Laboratory for Additive Manufacturing of Large-scale Metallic Components demonstrated a number of products printed using 3D technology, including the window frame of the main windshield of the large-size passenger aircraft C919 developed by China. The streamlined, silver-gray streamlined, beautiful and thick line uses the "coaxial powder feeding" technique to print with titanium alloy 3D.
According to Jiao Zongge, an exhibitor from Beijing University of Aeronautics and Astronautics, Beihang has produced more than 50 specifications and hundreds of large-scale key components using laser additive (ie, 3D printing) technology, including more than 10 aircraft, spacecraft, gas turbines, and steam turbines. Type equipment engineering has been practically applied. The demonstration also featured an overall titanium frame of the aircraft fuselage, with a 3D printed area of ​​5.02 square meters.
After nearly 20 years of research and application, Beijing University of Aeronautics and Astronautics has taken the lead in breaking through the key technologies of large-scale metal additive manufacturing such as “deformation cracking” prevention and “quality and performance” control, and has independently established a complete and complete technical standard system, which has enabled China’s aviation industry at one stroke. Become a country that masters the additive manufacturing technology of large-scale key metal parts and has successfully applied it.
China Aerospace Science and Technology Corporation's Shanghai Aerospace Technology Research Institute also exhibited a variety of models of 3D printed aerospace components, such as high-performance carbon fiber joints aluminum alloy, aluminum alloy space transposition capture rods, radiators and so on. In September of this year, the "Pujiang-1" satellite, which was designed by the Shanghai Academy of Aerospace Technology, was successfully launched. It has applied 3D printing products for the first time on domestic satellites. The antenna bracket uses a 3D printed molding product made of titanium alloy.
According to Wang Lianfeng, an expert from the Shanghai Aerospace Equipment Manufacturing Plant and president of the Shanghai Additive Manufacturing Association, the use of 3D-printed aerospace components is not meant to “get in style”, but is due to the rapid development of satellites and the need to reduce costs. The original production of a satellite rack required a 4 month production cycle, and 3D printing took only 3 days. One-day printing was completed and performance testing was conducted in two days. Currently, "Pujiang No. 1" has been on-orbit operation and normal work, which shows that the performance indicators of the 3D printing stand are equivalent to those of traditional machine-manufactured stands, which fully meets the requirements of the equipment.

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The registered trademark name, Hastelloy, is applied as the prefix name to more than twenty different highly corrosion resistant metal alloys produced by Haynes International, Inc. Thesesuperalloys, or high performance alloys, developed by Haynes International, are nickel-based steel alloys that exhibit traits that include high resistance to uniform attack, localized corrosion/oxidation resistance, stress corrosion cracking resistance and ease of welding and fabrication.

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High resistance to uniform attack
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In what Applications are Hastelloy alloys used ?

Chemical Processing Industry
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Oil and gas production
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Superalloys, also known as high performance alloys, have become the steel of choice for corrosion resistance and versatility.

*Hastelloy® is a registered trademark of Haynes International, Inc.

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