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Congratulations to Academician Li Dequn on winning the first "Hubei outstanding talent award"

Release time: 2021-11-30 Editor: Huang Juan Source: Number of visits:

eleven month thirty On the afternoon of June, the talent work conference of Hubei Provincial Committee was held in Han Dynasty. The meeting read out the decision of the CPC Hubei Provincial Committee and provincial people's Government on awarding the first "Hubei outstanding talent award". Li Dequn, a professor and academician of the Chinese Academy of engineering, was elected.

"Hubei outstanding talent award" is the highest talent Honor Award in Hubei Province. It is used to award all kinds of outstanding talents who have made outstanding contributions to the economic and social development of Hubei Province twenty In the name of Hubei provincial Party committee.

Award speech:

He took the lead in the research of plastic injection molding simulation in China, and initiated the "surface model" in the world, which is known as "an important milestone", and is still the mainstream technology of plastic forming simulation. The simulation industrial software developed by the director is widely used in automobile, electronics, national defense and other fields, and plays an important role in the localization process of large-scale and complex plastic mold in China.

Academician Li Dequn's acceptance speech:

I have been engaged in the work of material forming. Facing the huge gap between China and foreign developed countries decades ago, I have been in tatters and overcome difficulties. I have gone through the whole process from following up to leading, from digitization, networking to intellectualization. My personal role is limited. My achievements are the result of our joint efforts. I would like to thank my R & D team, the correct leadership of the party and our new era. Thank you!


Li Dequn: adding "brain" to plastic injection molding

Li Dequn, one thousand nine hundred and forty-five year eight Yue Sheng, born in Taizhou, Jiangsu Province, is a member of the Communist Party of China. He is an academician of Chinese Academy of engineering, expert in material forming, professor and doctoral supervisor of Huazhong University of science and technology. He has been engaged in the research and development of plastic injection molding simulation and intelligent plastic injection machine for a long time, and his innovative achievements have been used in the manufacture of high-end products such as national defense, automobile and electronics. The commercial software of 3D plastic injection molding process simulation was developed, which produced good social and economic benefits. one thousand nine hundred and eighty-six Year to one thousand nine hundred and eighty-seven He was a visiting scholar at Cornell University, two thousand and one Year to two thousand and six He was the dean of the school of materials science and engineering, Huazhong University of science and technology. three He won the second prize of the national science and technology progress award, one He won the second prize of National Natural Science Award, two thousand and ten He was awarded the national excellent scientific and technological worker in.

From the aerodynamic components of aircraft, the exquisite interior of automobile, the plastic shell of air conditioner imitating metal appearance, to the optical plastic lens in mobile phone, plastic products with different shapes have already entered ordinary people's homes and become the necessities of our daily life. This is inseparable from the digital and intelligent plastic injection molding.

Over the past 30 years, Li Dequn has been committed to the research and application of digital and intelligent plastic injection molding technology, leading the development of "intelligent manufacturing" in this field in China. From the proposal of surface model, to the development of simulation software, and then to the manufacture of intelligent equipment, Li Dequn has made outstanding contributions to the development of plastic forming processing discipline and industry in China.

Breaking ice

one thousand nine hundred and sixty-eight Li Dequn graduated from Tsinghua University and was assigned to work in Ningxia Lingwu farm repair factory, and then transferred to Hubei Qianjiang machinery factory for ten years. Ten years of grassroots experience has not depressed Li Dequn's will. He has also used what he has learned to help the factory improve its technological process, production equipment and production environment, making a lot of contributions to the transformation and upgrading of the enterprise.

"With that decade, through the ups and downs of my life, I learned how to overcome difficulties and setbacks." Li Dequn said that in the past ten years, he has improved in many aspects, such as spirit, physical strength, intelligence and technology, which makes him love his work and life even more.

one thousand nine hundred and seventy-eight Year, thirty-three Li Dequn, a year old, returned to the campus with a postgraduate admission notice from Huazhong Institute of Technology (now Huazhong University of science and Technology). He picked up his textbook again and started a new journey in his life. "Only after I joined the Chinese worker, could I really start academic research." Li Dequn said that he cherished this hard won opportunity for study and scientific research.

At that time, Professor Xiao Jingrong, Li Dequn's mentor, combined with the cutting-edge of the discipline and practical needs, determined the research direction of the combination of material forming and computer technology for Li Dequn, and he stepped into the simulation and mold of plastic injection molding from then on CAD/CAE/CAM The road of scientific research.

In the traditional plastic injection molding industry, the middle plane model of plastic injection is used as the theoretical basis to simulate the plastic forming. However, the mid plane model is too dependent on the operation level of the software, and it is difficult to simulate the plastic products with complex structure and asymmetric inside and outside. "To simulate plastic forming with the middle plane model of plastic injection requires not only the technicians to be familiar with the relevant professional knowledge, but also to carry out a lot of graphic processing." Li Dequn said that the work of extracting the middle plane even takes up the whole plastic forming simulation workload 80%

In view of the defects of midplane model, Li Dequn put forward the concept of surface model, developed simulation software based on surface model, and first published relevant papers in the world. International professional magazine Modern Plastics Then, a full page of the research results is reported.

This achievement of Li Dequn soon became the international research hotspot. From the United States, Britain, Germany, Japan, etc fifty Several international research groups cited its surface model paper, Georgia Institute of technology, USA Cardozo The concept of surface model is an important milestone in the history of plastic injection molding simulation

guide

one thousand nine hundred and eighty-six Li Dequn was invited to become a visiting scholar at Cornell University. During this period, Li Dequn not only devoted himself to the research of computer simulation technology of plastic injection molding process, but also for the United States AC-Tech The company has developed commercial two-dimensional cooling system software. After more than one year's trip to the United States, Li Dequn recognized the development direction of digital and intelligent plastic injection molding.

Due to the great gap between China and western advanced industrial countries, China has been short of simulation software for injection molding with independent intellectual property rights for a long time, and a large number of plastic molds need to be imported. Li Dequn, who came back from the United States, realized that this was an industry problem to be solved.

"At that time, the domestic plastic injection molding technology was just starting, and it was unable to produce high-precision and advanced structure forming molds. The plastic products produced not only cost materials, but also had a high rate of defective products. To solve this problem, we must develop our own plastic injection molding simulation software." twenty century ninety At the beginning of the s, Li Dequn and his team took the lead in developing a domestic plastic injection molding simulation software and realized its engineering application.

With the continuous efforts of Li Dequn and his digital forming team, the integrated simulation software of plastic injection molding -- HuaSu CAE It was born. The software has become an important achievement in the field of plastic injection molding simulation in China. Together with metal casting simulation and sheet metal forming simulation software, it has become a well-known brand in the field of material forming simulation in China one thousand It has been applied by many units, covering leading enterprises in the fields of home appliances, automobiles, aviation, aerospace, etc., and has produced remarkable social and economic benefits.

"With the simulation software of plastic injection molding, a series of complex processes of plastic products from process, mold to forming can be completed more conveniently. It innovates the time-consuming and money-consuming way of domestic plastic product industry relying on production trial and error for a long time, improves the design and manufacturing level of plastic injection molding tools, and enables China to produce more precise and economic plastic products. ”Li Dequn said.

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twenty-one At the beginning of the century, the number of plastic injection machines in China reached one hundred The traditional technology is generally outdated, which can not realize the energy supply and optimization control on demand, and the consistency of product quality is difficult to guarantee. Therefore, Li Dequn set his eyes on Intelligent Manufacturing of forming equipment.

"In the traditional production process of plastic products, it is necessary to simulate the plastic injection molding on the computer first, and then input the relevant parameters into the plastic injection machine manually, which often requires the operators of the plastic injection molding machine to have high technical proficiency. How to integrate the plastic molding simulation software with the plastic injection molding machine, and get rid of the dependence of the plastic product production process on the labor force, so as to achieve the goal Automation and intelligent production is what I want to do. " Li Dequn said.

Led by Li Dequn, intelligent technologies such as automatic setting of process parameters and adaptive injection were applied to the injection molding machine on the basis of forming simulation. Methods such as smooth optimization of injection speed by online inversion and two-stage closed-loop control of process curve were put forward, and intelligent injection machine was successfully developed.

According to the test of the national authority, the energy consumption of the intelligent injection machine developed by Li Dequn is lower than the highest energy consumption standard in China and Europe, and the key indicators such as response time and position accuracy have reached the international advanced level, which significantly improves the repeated precision and production automation of injection molding products. At present, intelligent injection machines are not only widely used in China, but also exported to overseas. As early as industrial technology four Li Dequn and his team have been at the forefront of the discipline and industry before intelligent manufacturing has become a hot topic in the whole society.

"In the future, we will continue to seek commercial cooperation to make the production of plastic products more intelligent and pleasant." Li Dequn said that he and his digital forming team will continue to deepen the research and development of intelligent material forming, and promote China's innovative achievements to the world.


Source: life of Party members


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