International Online Report (Reporter Li Meng): The interview of "Chinese Dream-Great Craftsman" was transferred from Benxi to Wafangdian on the 28th. The interviewee of this trip is Li Shugan, a maintenance electrician of Wafangdian Bearing Group Co., Ltd. (Wazhou). Why did you choose him? Because Li Shugan is the kind of person who has studied, carried forward and passed on the craftsman spirit for decades, he has solved many difficult problems in the field of bearing manufacturing heat treatment in China with his diligence and wisdom, and is known as "the worker inventor who dares to challenge the cutting-edge technology of the industry".
What are bearings for? What kind of enterprise is Wazhou? In Li Shugan’s words, running on the ground, flying in the sky and swimming in the water are all inseparable from rotation, and as long as there is rotation, there will be bearings. "We all know ‘ Liaoning ’ The aircraft carrier, when its carrier aircraft lands on the deck, will have a steel cable to hook it. The bearing used in this steel cable is made by us. " Wazhou Company, however, is the only super-large state-owned enterprise left in China bearing industry at present, and its history can be traced back to 1938. In addition, the reporter also saw that the military representative office of our Air Force, Navy and General Armament Department in Dalian is located in this company.
Li Shugan is a national model worker in 2015, a winner of the National May 1st Labor Medal, an expert enjoying special government allowance, the leader of the national Li Shugan Skills Master Studio, and the leader of the first "Li Shugan Demonstration Model Worker Innovation Studio" in Dalian … … Of course, there are many, many honors.
Li Shugan has been engaged in electrical debugging and maintenance of major precision imported production equipment for a long time. He is good at digesting and absorbing the high-end technology of imported equipment, and is good at quickly diagnosing and eliminating difficult faults of electrical equipment. His skill level is superior, and he is recognized as an electrical maintenance expert and praised by many colleagues at home and abroad.
Engaged in electrical maintenance for more than 40 years, he has solved more than 300 production equipment problems, reformed more than 150 sets of equipment, completed more than 270 technical innovations, and repaired several sets of equipment, which effectively guaranteed and improved the quality of bearings and created tens of millions of economic benefits for enterprises.
Give a specific example to illustrate. In the rapid development of China’s high-speed railway, Wazhou Group Company undertakes the heavy responsibility of R&D and manufacturing of railway speed-increasing bearings, and the heat treatment process once became a "bottleneck". Li Shugan and other technical experts of the company undertook the development task of quenching press. He took the initiative to undertake the research and development design of the new machine tool circuit, and innovated the static quenching of the machine tool into dynamic rotary quenching, which increased the hardness of the core of the railway speed-increasing bearing by 25%, reduced the deformation of the product by 30%, and achieved a leap in the heat treatment quality of the railway speed-increasing bearing.
Li Shugan proved that precision high-end bearings can not only be "made in China", but also be "created in China". This self-developed equipment can replace imported machine tools, saving 12 million yuan in purchase funds. This technical achievement won the "National Excellent Technical Achievement Award for Employees".
However, Li Shugan is far from satisfied with this. He said frankly, "In fact, there are no bearings on high-speed trains in our country at present. The relevant departments have set up a project team to study the independent manufacture of high-speed train bearings. Wazhou Group is one of the members of this project team, and Wazhou is working hard to this goal."
In 2010, a multifunctional carburizing electric furnace heating actuator imported from Germany in Wazhou Company was burnt out. German experts insisted on replacing the original parts, but it needed to be imported from abroad, and the production and market could not wait. Li Shugan relied on his own ability to absorb and digest the imported technology and boldly selected domestic parts to repair it, so that German experts had to give a thumbs up to China workers. Later, together with German experts, he optimized the operation program of electric furnace to a higher level, which prolonged the service life of heating actuators and saved 300,000 US dollars in foreign exchange.
The plaque of the representative room of the Chinese military hangs at the entrance of the office building of Wazhou Company, which shows the special importance of this company. Photo: Li Meng
Li Shugan has also made two outstanding contributions to technological innovation and invention. One is called "electric furnace running beat controller", which can automatically control the running beat of electric furnace according to the technological requirements of products, improve product quality, improve equipment efficiency by more than 65%, and automatically feed back information for equipment maintenance, effectively reduce the failure rate of electric furnace by more than 85%, and save production funds and maintenance costs for enterprises by 3.5 million yuan every year.
The other is called "heating control method of carburizing electric furnace". The traditional temperature control method often leads to the damage of electric furnace heater and short service life. The new invention has overcome this technical difficulty, improved the working efficiency of electric furnace, and saved 1.2 million yuan in electrical material cost for enterprises every year.
Li Shugan, born in 1955, has reached retirement age. As the leader of the national skill master studio, he has long insisted on teaching technology to young workers, and compiled his reading notes, maintenance experience and unique skills for more than 30 years into training materials, and taught them to young workers without reservation.
"The core task of this studio is training, because only through training can the technology be passed down like a baton." Nowadays, among Li Shugan’s more than 30 apprentices, there are both workers and college students, all of whom have become technical backbones of enterprises, and some have become highly skilled talents.
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