"Line maintenance is equivalent to outpatient service, hangar (referring to aircraft overhaul) is equivalent to inpatient department, accessory maintenance is specialized hospital." Liu Mingde, who has been deeply involved in aircraft accessory maintenance for 36 years, regards himself as an "aircraft doctor". The right "patient" can't speak, no negligence is allowed when "prescribing the right medicine", and absolute safety must be ensured. Z1z
accessory repair covers electronic voltage, hydraulics, pneumatics, machinery and other fields, and repairs the parts of the aircraft that have failed. "The repaired parts must reach the extreme and perfection, and they must ensure reliability." Liu Mingde said with emotion that in their field, no matter how many years they have worked, there is a lot of pressure.
Liu Mingde is instructing workers to use the equipment. Photo courtesy of the respondent
Liu Mingde is the director and engineer of the accessory business center of Guangzhou Aircraft Maintenance Engineering Co., Ltd. Under his leadership, the team has obtained 112 national patents. As a technical leader, Liu Mingde won the title of "Southern Guangdong Craftsman" in Guangdong Province in 2018. He believes that patent achievements cannot represent everything, but are important indicators for testing a team's business capabilities and innovation level.
In an exclusive interview with The Paper (www.thepaper.cn) on the afternoon of December 3, Liu Mingde said that after decades of development, my country’s aircraft maintenance level has improved a lot, but compared with the world’s first-class level, it is still very much It takes a long time to catch up.
"The model is iterating very quickly. Maybe a model has not been figured out yet, and a new model has come in. Every new model is a new beginning for the maintainer." Liu Mingde emphasized that aircraft maintenance Practitioners in the country have to keep learning, “If you don’t study for a day, you may fall behind.”
On December 10-13, the first National Skills Competition will be held in Guangzhou, with 2565 players from 36 national teams participating. This is Since the founding of the People’s Republic of China, it has held the highest-level, most-project, and largest-scale national and comprehensive professional skills competition. Liu Mingde believes that such competitions can play a guiding role and encourage more young people to focus on improving their professional skills and feel that it is an honor to engage in related jobs.
Most auxiliary tools are produced independently.
At the accessory business center of Guangzhou Aircraft Maintenance Engineering Co., Ltd., Liu Mingde leads a team of more than 400 people, dedicated to the improvement of aircraft accessory maintenance technology, independent research and development and innovation of tooling equipment, improving maintenance quality and widening maintenance depth. Improve safety performance. Liu Mingde has no leadership, and many young colleagues call him "Uncle De".
Liu Mingde, 55, is from Guangzhou. In 1983, he entered the technical school organized by the former Civil Aviation Administration of China in Guangzhou. "In school, I mainly learn theoretical knowledge." Liu Mingde has been interested in aircraft since he was a child, and tried to apply for pilots. Because there are few pilots, he did not pass the exam. After graduation, he entered the field of aircraft maintenance. Z1z
aircraft maintenance is divided into several categories, such as line maintenance, hangar maintenance, and accessory maintenance. In the first few years, Liu Mingde worked in the field of parts manufacturing. In 1994, in order to develop workshop maintenance capabilities, the company invested 23 million U.S. dollars to form an accessory maintenance team, and Liu Mingde became one of them.
At present, Liu Mingde's team has achieved independent production of most of the auxiliary tools required for aircraft accessory maintenance.
Liu Mingde told The Paper that at the beginning, the domestic accessory repair foundation was very weak, and many parts need to be purchased from abroad; when buying parts, some auxiliary tools are also needed. These auxiliary tools seem simple, but the price is amazing. "More expensive than gold."
"Money needs to be spent on the blade." Liu Mingde introduced, such as dismantling a pin for parts, it cost one or two thousand dollars that year. "Everyone feels distressed. This is almost a person's salary for one year." As a result, the whole team wondered "Can you do it yourself". Liu Mingde has worked in parts manufacturing for several years. He has experience in machining. He knows how to design drawings and what materials are used to make them. This provides a basis for him to design and manufacture auxiliary tools.
"A pin can be processed by itself, and the cost may be less than 50 yuan." Liu Mingde said that once the technology is truly mastered, it is actually not that difficult. Sometimes the team has to draw 10-20 drawings of auxiliary tools a day. After more than 30 years of development, the team led by Liu Mingde can manufacture most auxiliary tools, and some parts and components group companies can also produce them. According to Liu Mingde's estimation, his team has manufactured tens of thousands of auxiliary tools. In addition, alsoWill continue to optimize and improve auxiliary tools according to the actual situation.
has obtained a total of 112 national patents. When
first formed the accessory maintenance team, the funds were limited and the entire team was less than 100 people. In 2002, the accessory business center was established. On the basis of accessory maintenance, it added marketing functions to help other airlines maintain aircraft parts. Currently, they have hundreds of domestic and foreign customers.
In the past ten years or so, the research and development achievements of the Liu Mingde team have exploded. While increasing the reliability of maintenance, it also attaches great importance to funding research and development of testing equipment. The "One-click Customs Clearance—Automatic Contract Module" developed by Liu Mingde’s team is a batch contract processing software that can independently write software programs and automatically process 103,000 contracts per year. Compared with the traditional manual operation mode, the efficiency is increased by more than 5 times, and the annual savings With 153 manpower (professionals for aviation materials), the system has been extended to more than 20 subsidiaries of China Southern Airlines across the country. The "small TV LCD/touch screen rapid testing equipment" developed by the
team is the first self-made rapid testing touch screen LCD equipment in China, which can realize batch testing and automatic recording, and the testing time has been shortened by nearly 80%. Recently, a system that can automatically monitor aircraft "flash screen" failures was granted a national utility model patent, which was formally applied to the maintenance of aircraft accessories in my country. Through automatic detection, it not only greatly improves the accuracy, but also allows maintenance personnel to observe with the naked eye. Has become history.
In 2016, "Mingde Liu Model Worker (High-skilled Talent) Innovation Studio" was established, and the head of the studio was Liu Mingde.
In 2016, China Southern Airlines "Mingde Liu Model Worker (High-skilled Talent) Innovation Studio" was established. The team leader is Liu Mingde. The team consists of technical experts, senior engineers, and senior engineers in the field of aircraft accessory maintenance machinery and electronics. A technological innovation workshop in the field of aircraft accessory maintenance.
At the beginning of this year, the new crown pneumonia swept the world. The heat exchanger is an important part of the aircraft air conditioning system. The air supply, circulation and temperature regulation in the cabin cannot be separated from it. It is like the breathing system of an aircraft. In order to protect the health and safety of passengers and on-board personnel, Liu Mingde convened a meeting with the members of the studio to study the improvement of the heat exchanger repair process in special times.
Finally, the solution they adopted was to increase the pre-process. When the maintenance personnel received the heat exchange gas removed from the aircraft, they sprayed disinfectant water on the surface of the parts as soon as possible, and then transferred it to a large special oven after standing for 15 minutes. Bake for 1.5 hours in an environment of degrees Celsius to ensure that viruses that may remain on the surface of the parts or even the inside of the core are killed. At the same time, after the repair of the parts is completed, the bleed pipe openings are blocked with a plug and a plastic film is used to wrap the heat exchanger as a whole. It is like putting a mask on the parts, which provides comprehensive protection to ensure that the repaired parts are clean and safe next time. To protect the health and safety of passengers.
The Paper learned that around 2010, Liu Mingde's team consciously began to apply for patents. Data shows that so far, the team has obtained 112 national patents, including 25 inventions, 83 utility models, and 4 software works. Liu Mingde believes that patent achievements cannot represent everything, but are important indicators to test the R&D and innovation capabilities of a team.
Regarding the achievements in the past, Liu Mingde said that on the one hand, this is related to the catch-up mentality of the entire team, "Why can't we do more with our own ability?" On the other hand, these achievements are far from his requirements and goals. It is still far away, "every patent is just a small breakthrough."
Up to now, Liu Mingde's team has obtained 112 patents. The Paper, journalist Chen Xuhou, photo by
, keep learning, continue to catch up with
. He has been deeply involved in aircraft accessory maintenance for 36 years. Liu Mingde has always had deep "technical anxiety" and always talked about technical issues.
Liu Mingde understands his work as an "airplane doctor". Facing a "patient" who cannot speak, he must communicate with the airplane through his professional knowledge and experience, so as to "prescribe the right medicine" and find a solution. The failures on the aircraft are sometimes intermittent. When they occur, they are recorded by the pilot. When they are sent for maintenance, they will not fail. This requires the maintenance personnel to find a way to simulate and restore them before troubleshooting. Once the
aircraft has a problem, the consequences will be disastrous, which puts forward higher requirements for maintenance. "The first place is alwaysSafety. "Liu Mingde said that the difference between aircraft maintenance and car maintenance, "is not almost usable", but to ensure its reliability, tolerant of negligence. In the daily accessory maintenance, they must pursue the ultimate and perfection, constantly Put pressure on yourself to further improve and perfect your ideas. The iteration of
aircraft models is very fast. Maybe a new model is put into use before one model is figured out. Every new model is put into use, for the maintainer "It's all a new start." Liu Mingde emphasized that aircraft maintenance work is very hard. The maintenance personnel cannot relax and need to master a lot of knowledge. New products and technologies are put into use every day, and they must be constantly learning. , It may be out of date." Z1z
"After decades of development, China’s aviation industry has shortened the gap with the international advanced technology through the efforts of one or two generations, but the gap is still large and it still needs a long time to catch up. "Liu Mingde said that as a practitioner, you must look up to the starry sky, keep your feet on the ground, and continue to work in their respective subdivisions. Only in this way can the gap be narrowed little by little. Liu Mingde also said that the technological blockade of advanced foreign countries is getting stricter. For domestic R&D teams, they are more demanding to focus on independent innovation and “cannot be completely controlled by others.” Z1z
The Paper noted that China Southern Airlines advocates “five small” innovations and encourages “small inventions, small creations, small innovations, small designs and small suggestions.” The Liu Mingde team also has a corresponding reward mechanism, which will evaluate innovation points and consider the improvement of its innovative value, and give certain bonuses according to the project. As the team leader, in addition to technology research and development, Liu Mingde also pays attention to team building. He has been promoting The system of "teacher and apprentice" and the concept of "lean management". In the traditional model of master and apprentice, we pass on experience in the work and establish an innovative training mechanism. Not only does it have professional training courses in-house, but also "sends out" engineers. Training ensures that the skills of engineers are developing in sync with the industry.
"Although the technical means are constantly changing, the craftsman spirit of pursuing the ultimate cannot be changed. This spirit is the premise and motivation for innovation. "Liu Mingde said that in order to make progress in aircraft maintenance, the spirit of craftsmanship must be exerted to the extreme. It requires continuous improvement from generation to generation and inheritance of valuable experience. As a practitioner, we must pursue the ultimate and always have to "do it next time." “Be better” mentality; not impetuous, but do one thing with your heart.
According to Liu Mingde, a group of students were recruited from colleges and universities such as Beihang University and China Southern Airlines in the 1990s. After years of precipitation, these people Now they have become technical backbones.
"Why do you have so much passion after more than 30 years? "A young colleague asked Liu Mingde this way, and his answer was: you need to adjust your mentality. If you feel that work is a burden, you will feel tired every day; but if you have a goal every day and try your best to solve it, you will have a sense of accomplishment and experience. The joy of achieving goals and solving problems.
