Mr. Lu Xun once said: "Since ancient times, we have had people who have buried their heads in hard work, and there have been people who have worked hard with all their might... They are the backbone of China! "Wang Ben, it is such a person. As a professor and doctoral supervisor of Shenyang University of Aeronautics and Astronautics, he has long been closely combined with the urgent need for high-quality, efficient and intelligent manufacturing technology for key complex parts of China's advanced aero engines and large aircraft, facing the scientific research and production of advanced aero engines and aircraft, and has long carried out research on the processing theory and new technologies of aviation difficult structural parts, solved major problems in the field of aviation manufacturing, and had far-reaching significance for the development of the aviation industry and national security.
First, overcome difficulties and create world-class quality
As we all know, the aviation industry is an important strategic guarantee for national security and the status of a big country, and has a huge driving role in the development of the national economy and science and technology. The increasingly fierce competition in the aviation field has put forward an urgent demand for the rapid development of China's aviation manufacturing technology. Driven by the demand for the integration of aviation components, the size of components is getting larger and larger and the design has a large number of complex local structural features. The manufacturing technology of aviation components directly affects its reliability, safety and other service performance, and the manufacturing batch and accuracy requirements of new advanced aircraft components are increasing, which puts forward extremely high requirements for aviation manufacturing technology. The contradiction between the particularity of the requirements of the aviation component manufacturing process and its high-precision and high-efficiency manufacturing has become one of the most urgent problems to be solved in the field of aviation manufacturing.
In view of a series of key issues restricting the improvement of the development capacity of new aviation components and the mass production capacity of aviation manufacturing enterprises, Wang Ben has presided over a number of national, provincial and ministerial related projects such as the National Natural Science Foundation of China and the National Natural Science Foundation Youth Science Fund, and carried out systematic research through the comprehensive use of scientific experiments, simulation and other research methods, taking high-temperature alloys, titanium alloys, composite materials and other typical aviation difficult-to-process materials as the object. It has achieved important breakthroughs in the application technology and basic theoretical research of CNC efficient processing of aviation structural parts, and has achieved a number of major scientific and technological achievements with independent intellectual property rights, and has been applied in a number of new key models.
Up to now, Wang Ben's research achievements have won 1 first prize for technological invention of the Chinese Society of Aeronautics and Astronautics, 1 second prize for scientific and technological progress in national defense, 1 second prize for scientific and technological progress in Liaoning Province, 1 first prize for scientific and technological progress of China Mechanical Engineering Society, 1 third prize for natural academic achievements in Shenyang, 1 first prize for dalian patents, and 1 industry-university-research cooperation innovation award (individual) in 2020. Among them, "advanced aviation structural parts CNC processing damage and deformation control methods and key technologies" was identified as: reaching the international advanced level in 2017. He has published more than 60 papers, including nearly 30 SCI/EI searches, and authorized 18 national invention patents, 1 national defense invention patent, 5 utility model patents, and 1 software copyright as the first person to complete it. The papers he has written have been selected as the top academic papers of China's fine scientific and technological journals in 2013 and 2017 (5000 front-runners).
Second, the backbone of society, step on the footprints of the extension of the string
If making new scientific breakthroughs in response to certain social phenomena is a small step in the development of the discipline, then applying the results of scientific research to social practice is a big step in the development of the discipline. In the process of applying a number of new key models of products to engineering practice, Wang Ben has always stepped on a series of continuously extending footprints with the strength of grasping iron and leaving marks on stepping stones.
(1) Low-deformation and efficient processing technology of low-pressure secondary superalloy receiver of aero engine.
The receiver is a key component of the aero engine and is critical to the structure and service performance of the engine. A certain type of aircraft engine low-pressure secondary receiver, the material is superalloy. Due to the thin wall thickness and large processing allowance of the casing structural parts, and the high-temperature alloy material is a typical difficult-to-machine material, the receiver is seriously deformed after processing and use. The deformation of the receiver parts makes it difficult to ensure the machining accuracy and assembly/installation dimensions, which seriously affects the manufacturing cycle and service performance of the engine. Under the existing technical conditions, the processing deformation is serious, so it is necessary to increase multiple processes such as heat treatment to reduce deformation.
In order to achieve the effective control of the machining deformation of the receiver, Wang Ben analyzed and optimized the key factors affecting the machining deformation, such as cutting parameters and tool path, on the basis of the residual stress test and analysis of the receiver. The proposed low-deformation and efficient machining methods, new processing tools for high-temperature alloy structural parts, high-reliability fixtures and other advanced technical means have been used to effectively predict and control the processing deformation of thin-walled casing parts of high-temperature alloys. After processing, the processed receiver greatly reduces the possibility of processing deformation of the part, meets the technical requirements of the application unit for the receiver, reduces the follow-up process, and shortens the product manufacturing cycle.
At present, the receiver parts processed by the research results of the project have been successfully applied in a certain type of engine, which has effectively promoted the development of machine receiver processing technology such as high-temperature alloy of aircraft engines in China.
(2) Titanium alloy / carbon fiber composite material laminated structure high-quality long-life hole making tool development technology.
In recent years, the use of carbon fiber composite materials and titanium alloys on advanced aircraft has been increasing, and there is a large number of connection/assembly needs between carbon fiber composite components and titanium alloy components, so its processing quality has become one of the key factors affecting the service performance of aircraft. However, the high-quality processing technology of carbon fiber composite materials and titanium alloy laminated members has always been considered to be the biggest stumbling block restricting the development of connection/assembly and manufacturing technology in the aviation industry, and it is also one of the key technical problems that aerospace manufacturing enterprises urgently need to solve.
Wang Ben's research group found in the study that the long-life hole making tool of titanium alloy/carbon fiber composite laminated structure is one of the key factors that determine the quality of connecting hole processing. Therefore, in view of the technical problems that the composite materials are prone to processing damage in the process of hole making of carbon fiber composites and titanium alloy laminated structures, they studied and established an analytical model of tearing and delamination damage of carbon fiber composites in the process of hole making. Aiming at the technical problems of tool wear speed is too fast in the process of laminated structure hole making, and the processing quality after tool wear is difficult to guarantee, the optimized design method of efficient and long-life tool is proposed. The reaming and reaming composite tool with stepped structure was developed, and the laminated structure expansion, hinging and reaming composite hole making process was realized, which improved the efficiency and stability of hole making.
(3) Low pressure compressor titanium alloy bearing cover processing deformation control technology.
The titanium alloy bearing cover of a low-pressure compressor of a certain type of aircraft engine is very serious due to the cutting characteristics of the titanium alloy and the structural characteristics of the bearing cover, resulting in machining deformation and tool wear. In view of these problems, Wang Ben led the research group to develop the deformation control technology of the low-pressure compressor titanium alloy bearing cover processing, and through the optimization of the processing technology and fixtures, combined with the detection of the processing deformation, it was shown that the use of this research result can achieve effective control of the processing deformation, and the processing accuracy of each size meets the design requirements. At the same time, the application results of the titanium alloy bearing cover on a low-pressure compressor show that the titanium alloy bearing cover developed based on the research results of the project, the machining accuracy of the parts, the deformation control, the surface roughness and other technical indicators meet the requirements of use.
At present, the high-quality processing technology developed by Wang Ben's research group has been successfully applied in aviation manufacturing enterprises, which not only achieved significant economic benefits, but also promoted the effective weight reduction of aviation components, greatly improved the service performance of aviation components, effectively promoted the manufacturing level of structural parts of china's aviation difficult-to-process materials, improved the mass production capacity of related models of products, shortened the product development cycle, and will effectively promote the manufacturing technology level of complex components of difficult-to-process materials in many fields. It has made important contributions to the technological progress and national defense security in the field of aviation manufacturing in China.
In recent years, Wang Ben's research group has promoted the establishment of the "Thin-walled Parts Advanced Processing Technology" joint laboratory of Shenyang Aerospace University-China Aviation Development Shenyang Liming Aero Engine Co., Ltd. for the advanced technology of aviation difficult processing structural parts, and relied on the laboratory to lead and organize a series of enterprise technical problem research projects, some technologies fill the domestic gap, reach the international advanced level, greatly improve the service performance of aviation components, and shorten the manufacturing cycle.
Third, great Confucian feelings, with actions to create extraordinary
The Xunzi Confucianism divides Confucians into three categories: "Vulgar Confucianism", "Ya Confucianism" and "Great Confucianism". The Great Confucians praised by Xunzi can combine truth-seeking with practical application, and take into account long-term goals and current tasks in social practice. Wang Ben can be called a young "Big Ru", only 37 years old has been selected as Liaoning Province's millions of talents project thousands of levels of talent, was rated as Liaoning Province's outstanding master's degree thesis instructor, Shenyang City excellent graduate tutor, Shenyang City senior talent, is a senior member of the Chinese Mechanical Engineering Society, the National Natural Science Foundation of China letter evaluation expert, Liaoning Province innovation team "advanced aero engine structural parts digital processing technology" backbone members, etc., while theoretical innovation, he insists on putting the innovative results into practice, Remarkable achievements have been made.
Facing the future, Wang Ben knows that there are more problems to be solved in the aviation manufacturing industry, which makes him feel even more that "the world is changing, time is pressing... Ten thousand years is too long, only to fight for the day. "We are determined to achieve better results in the future scientific research journey."
(Author Zhang Xiaoxue)