On June 1, at the factory of Shandong Huali Motor Group Co., Ltd. in Rongcheng , workers were assembling electric motors for rail transit. In the quality inspection process, the quality inspectors are concentrating on torque calibration of the fasteners… The batch of motors in front of us will be installed on the CR400 Fuxing EMU to provide power for the converter cooling system.
After years of accumulation, Huali Electric has customized and developed a variety of special models for my country’s rail transit industry. With reliable product performance and quality, its market share in the domestic rail transit industry has gradually increased. The products are mainly used in Harmony and Fuxing EMUs The group traction cooling system, among which, the motors assembled by the high-speed trains of the Beijing-Zhangjiakou Line for the 2022 Beijing Winter Olympics are from Huali Motors.
“At present, there are only about 3 motor companies in China that have the production qualification of this type of motor. We are one of them. Nearly 3,000 EMU traction cooling system motors are ‘born’ in Huali Electric every year, contributing to China’s high-speed rail industry. ” said Yin Zhihua, Director of the Technology Center Office of Huali Motor Group and Director of the Quality Assurance Department.
The traction motor is the “heart” of the high-speed train. In the past, the motors used in domestic bullet trains mainly relied on imports, and part of Huali Electric’s business was to repair imported motors. ”As a Chinese company, we hope that one day we can reverse the situation of being controlled by others for a long time and use our own ‘Chinese heart’!” Yin Zhihua said. Having participated in the maintenance of imported motors for nearly 10 years, Huali Motors knows that it is necessary to realize the localization of motors as soon as possible. The EMU is assembled with a “Chinese heart”.
The operating locations of EMUs are changeable and the environmental conditions vary greatly, which puts forward extremely high requirements on the environmental adaptability and stability of supporting equipment. ”Motor design capability, technological level, manufacturing and quality control standards are very strict. The road to localization is not easy. The key is to crack down on the hard bone of the key technology, to overcome the temperature rise of motor windings and bearing temperature rise control, insulation System and bearing reliability assurance, lightweight design while ensuring structural strength and other issues.” Yin Zhihua said.
In order to do a good job in research and development, Huali Motor established a “motor development team” headed by Ju Dapeng, the deputy general manager. According to the requirements of the railway system supporting manufacturers, it focused on the problems of imported motors and optimized the design of the starting performance. During the two years, the R&D personnel devoted themselves to research and polishing in structural design, electromagnetic design, process design, type test and other links. After many repeated demonstrations and tests, they finally completed the “journey of tackling key problems” and achieved key indicators to achieve and outperform the technology. Request and import products. ”Our motor products are compact in structure, high in starting torque, low in starting current, long in service life, and low in failure rate. The cost is half that of imported products. We get rid of foreign technical restrictions and realize localization!” Yin Zhihua said.
As a well-established company, Huali Motor has always taken “creating a century-old Huali and building a world brand” as its goal. Huali Motor has long locked its sights on wind power, rail transit, automobile testing and other segmented fields and high-end markets, increased investment in research and development, and carried out product upgrades. The product customization rate has reached more than 90%, which is a single item in the manufacturing industry in Shandong Province. Champion enterprises and specialized new enterprises.
“Intelligent, digital and informatization transformation of the traditional manufacturing model is an inevitable choice for us to transform and seek sustainable development. The group began to implement the intelligent transformation project in 2017, and built multiple electric motor digital workshops for the whole process. At present, we The second phase of project construction is underway to build an electric motor intelligent factory, which is expected to be completed and put into operation in 2024.” Yin Zhihua said that after the project is put into production, the overall production efficiency will increase by 57%, the product development cycle will be shortened by 46%, and the digitalization rate of product design will reach 100%, and the numerical control rate of key processing procedures will reach 95.8%.
Speaking of the company’s future development ideas, Yin Zhihua said: “Our model is to ‘walk on two legs’. General-purpose products rely on automated equipment for production. While making the general-purpose market bigger and stronger, we must devote more energy to In the product research and development of the high-end market segment, the market segment should be refined and detailed.”
Post time: Jun-03-2023