Fasteners such as bolts and rivets will drive the civil aviation market

Round head, flat head...In the eyes of ordinary people, the difference between bolts and nuts, which are standard aviation components, lies in their different shapes. In the eyes of Tang Niu, director of the Inspection Center of China Aviation Industry Standard Parts Manufacturing Co., Ltd. (Aviation Industry Navigation Marks Company), whether they can be loaded on an airplane is strictly determined by a series of small numerical changes behind the decimal point on the inspection instrument.

Four years ago, it was with this meticulous spirit and at this testing center that the rivets developed and produced by the Aviation Industry Navigation Marks Company passed the on-site inspection and audit of manufacturing compliance organized by the airworthiness authority, and obtained the first airworthiness of the domestic standard parts. Approve the label.

Airworthiness refers to the inherent quality of an aircraft and its components that can safely fly (including take-off and landing) in the expected environment and under restricted conditions, and is an important part of aviation safety. The airworthiness approval label is an "identity card" for the enterprise to obtain the production of aircraft parts.

"This is a historic breakthrough in the domestic standard parts industry in the field of domestically-made large passenger aircraft, and it also means that the quality of our products meets the requirements of airworthiness standards." Liu Yu, director of the Science and Technology Committee of the Aviation Industry Standards Corporation, then deputy general manager and chief engineer Still very excited in memory.

Founded in 1993, Aviation Industry Navigation Marks Company is the only specialized scientific research and production base of complete machines, full series of standard parts, high-strength fasteners and small parts in my country's aviation industry. Although he has been engaged in the manufacture of aviation standard parts, he has never entered the field of civil aircraft before 2007.

In January 2006, the "National Medium and Long-term Science and Technology Development Plan Outline (2006-2020)" was released, confirming that my country will independently design the second large-scale civil passenger aircraft and be included in one of 16 major special projects. This large passenger plane was named C919.

This news has "lived" the heart of the company. In August 2007, Zhang Xin, then chairman and general manager of Aviation Industry Navigation Marks Company, went to COMAC and Shanghai Aircraft Design & Research Institute together with Liu Yu to express their desire to participate in the development of new passenger aircraft standard parts.

"Aviation Industry Navigation Marks Company has done aviation standard parts for more than 40 years. We will definitely be able to produce our own civil aviation passenger aircraft standard parts for the country. What we are waiting for is an opportunity." Liu Yu said.

After that, the company set up a special airworthiness office, which gathered more than 200 employees from R&D, production and testing, and aimed directly at the airworthiness approval label for standard parts in the civil aviation market.

In 2010, with the support of Guizhou's industrial province strategy, Aviation Industry Navigation Marks Company and COMAC signed an agreement on the development and verification and technical agreement of domestically produced standard parts for the C919 large passenger aircraft. Within two years, it will complete the development of 34 standards and 103 products. . This allowed the aviation industry navigation mark company to successfully obtain the "test paper" for becoming a domestically-made large aircraft supplier.

"We have a history of military aviation standard parts production, but such experience does not have much effect in the development of civil aviation standard parts. In the final analysis, it is because the two types of standard parts require different systems." said Li Jian, general manager of Aviation Industry Navigation Marks Company. .

Everything starts from scratch. The workers started from the size of the notch of the rivets, the scientific researchers started from the simplest text, and the inspectors started from the most basic operation steps... and gradually established a strict quality assurance system in accordance with airworthiness standards.

"Such a "dead" is worth it! Liu Yu "explained" to reporters that aviation standard parts require that no quality problems occur for 30 years, and every slight deviation will produce unimaginable results.

With this enthusiasm, in March 2013, the Aviation Industry Aviation Standards Corporation obtained the first airworthiness approval label for the standard parts of the C919 aircraft. 3 standards and 5 specifications of domestic aluminum alloy solid rivets have obtained the C919 airworthiness label. In October of the same year, it again obtained two airworthiness approval labels containing 2 standards and 7 specifications of domestic high-temperature alloy bolts and 3 standards and 14 specifications of domestic washers. At the same time, it automatically obtained the right to match the ARJ21-700 regional airliner developed by COMAC.

At present, the Aviation Industry Aviation Standards Corporation has 8 standards and 52 specifications of aviation standard parts, which are approved to enter the "Qualified Material List" of the C919 aircraft, and are assembled on this first international mainstream mainline passenger aircraft independently developed by my country.

With 10 years of unremitting efforts, Aviation Industry Navigation Marks Company has become a qualified supplier of C919, while also actively integrating into the world aviation industry chain. It has successfully become a qualified supplier of General Motors Corporation of the United States and developed engine supporting standard parts for it.