Shulou(Shulou.com)11/24 Report--

CTOnews.com October 19 news, According to Xi'an aviation base official news, Recently, Xi'an aviation base enterprise Xi'an Xinghang Aviation Technology Co., Ltd.(hereinafter referred to as "Xi'an Xinghang Airlines") Investment construction of the national production of large aircraft skin production line officially completed in Xi'an aviation base, Realize the low-cost production and manufacturing of large aircraft skin, Will effectively enhance the industrial competitiveness of the jurisdiction, Assist the commercial success of domestic large aircraft.

According to introduction, the production line of large aircraft skin meets the full-process skin production and manufacturing processes such as blanking, stretching (transverse stretching, longitudinal stretching), roll bending, heat treatment, numerical control milling, shot peening, fluorescent penetration, oxidation, painting, etc., realizing semi-automatic turnover and loading and unloading of skin. After being put into full production, it is estimated that more than 100 skin parts on the nose, front, middle and rear fuselage, cabin door and movable wing surface of domestic large aircraft can be produced annually, so as to solve the capacity bottleneck and cost reduction demand of customers in most sections of domestic large aircraft and promote the high-quality development of domestic large aircraft skin industry.

CTOnews.com learned that skin is the equivalent of the aircraft's "skin" and its main function is to protect the aircraft's internal structure and maintain the aircraft's shape and aerodynamic characteristics. However, because aircraft often face strong aerodynamic forces during flight, the strength, plasticity, corrosion resistance and technological level of skin materials are required to be relatively high. For a long time, the key equipment for skin manufacturing has only been mastered by a few developed countries, which restricts the development process of large domestic aircraft in China.

The newly-built large aircraft skin production line is all composed of domestic equipment, among which the 1200-ton large skin stretching machine is the first domestic equipment specially supported by the state 04; the 17-meter large skin panel numerical control shot peening machine is the first domestic equipment jointly developed and manufactured by Xi'an Xinghang Airlines, Kunshan Kaixin Precision Machinery Co., Ltd., Shanghai Aircraft Manufacturing Co., Ltd. and Northwest Polytechnic University; The five-axis equipment for skin sinking milling and contour milling, the core functional components of 30000 rpm high-speed electric spindle, AC double swing head, large size ultra-weak rigid skin transmission and turnover system, are designed, assembled, developed and produced by Xi'an Xinghang Aviation Technology Co., Ltd.

In addition, in order to solve the environmental pollution of skin milling, the equipment cost of mirror milling is high, the processing efficiency is low, the quality is unstable, and the current technology is stable.(Chemical milling, mirror milling, contour milling) Long product turnover route and other problems, Xi'an Xinghang Airlines organized a professional team to carry out a large number of technical research and engineering tests around the skin production process and equipment, innovate and optimize the current skin processing technology, and made major technological breakthroughs. It has applied for 4 invention patents and 6 utility model patents accumulatively, ensuring the smooth establishment of a large aircraft skin production line suitable for mass production at low cost. It consolidates Xi'an Xinghang Airlines' competitive advantage in the field of aircraft skin manufacturing.

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