Welding is a key link in the manufacture of auto parts and bodywork, as well as a very wide range of applications. In the automobile manufacturing process, except for the body welding, the manufacturing processes of the six main assemblies of the engine , the transmission , the axle , the frame, the body, and the carriage are all inseparable from the welding technology. However, for a long time, advanced automotive welding technology and equipment have always been the soft underbelly of China's auto equipment industry, and equipment is also basically dependent on imports. Fortunately, this situation is expected to change in the next few years, China's domestic welding equipment manufacturing companies are pursuing chase, one by one to achieve a breakthrough. Self-propelled welding equipment company grows rapidly On March 23, 2016, Zhejiang Wanfeng Science & Technology Development Co., Ltd. successfully acquired a Paslin company, an international leading supplier of welding robot application systems. This American company established in 1937, the core business is the automation system concept, industrial design, construction and production assembly experience, for the global automotive industry and heavy industry production to provide automated system solutions. In the field of domestic automotive equipment manufacturing, Wanfeng Robotics is known for its expertise in automated casting, grinding, cleaning and picking. Wanfeng Technology stated that through this acquisition, Paslin will have a synergistic effect with Wanfeng Robots in the field of industrial automation, providing customers with automated solutions that integrate rough blanks into mechanical processing and component connections. This also means that China’s domestic companies have added a new force in the field of autonomous vehicle welding. At the beginning of this year, led by Professor Shao Xinyu of Huazhong University of Science and Technology, Huagong Laser Engineering Co., Ltd. (referred to as Huagong Laser), Shenlong Automobile, Shanghai General Motors, Jianghuai Automobile, Wuhan Falilai Welding System Engineering Co., Ltd., Shanghai GM, and Jiangling. The R&D team of more than a dozen companies such as Great Wall Motor Co., Ltd. jointly completed the “High-Quality and High-Efficiency Laser Welding, Cutting Key Processes and Complete Equipment†project in automotive manufacturing, and won the first prize of National Science and Technology Progress Award. “The valuable aspect of this project is not only that it has broken the monopoly of foreign high-end laser processing equipment market in China, but also has driven the level of laser processing technology in China's automobile manufacturing into the international forefront.†China Machinery Industry Science and Technology Ma Jingkun, Director of the Rewards Office, told reporters that before the results of this project came out, China’s auto welding and cutting fields have always been dominated by foreign capital. With the introduction of the results of this project, domestic auto companies have begun to extensively use high-end laser welding, cutting processes and complete sets of equipment developed and manufactured locally. He believes that the application of large-scale laser welding technology will play a very positive role in improving the quality of self-owned brands. According to report, so far, as a leading company in the field of laser welding in China, Huagong Laser's high-efficiency laser welding technology and equipment have been used in the production lines of Shenlong, Great Wall, Jianghuai, Shanghai GM, Jiangling and other companies. The research and development of nearly 100 key functional components and the design, manufacture and system integration of various complete sets of equipment; 10 invention patents, 24 utility model patents and 3 enterprise standards. From the perspective of the customer's feedback, some important indicators such as long-distance lap-fill welding, unequal thickness-cut welding integration, non-penetrating precision controlled thick cutting and other technical aspects are even better than foreign counterparts. Laser welding technology has a wide application space The automotive industry provides a broad market for laser welding and cutting technology applications. Not only in the field of body welding, laser welding and cutting technology is also widely used in the production of automotive parts. According to statistics, 70% of auto parts can be laser welded. The application of laser welding in automobiles can be divided into two categories: one is the laser welding of tailored panels; the other is the welding of various assemblies and body frame structures. Laser cutting can be used in the manufacture of thin parts in automobiles, such as laser trimming, preparation of slabs, and machining of various holes. In the automotive industry, laser technology is mainly used for body welding and parts welding, such as the welding of the canopy and side panels. The precise quantized welding production represented by laser welding promotes the progress of automotive welding technology with a new technical concept. In addition, some new connection methods are also taking the lead in automotive manufacturing applications. For example, variable polarity MIG/MAG welding methods, laser-arc hybrid welding methods, magnetic pulse welding methods, gluing and mechanical joining methods have been successfully applied in the manufacture of various new models. Welding technology automation, high-efficiency trend Due to the large number of automobile models, complex forming structures, specialized parts production, and standardization, as well as the comprehensive requirements for quality, efficiency, and cost of automobile manufacturing, it is determined that automotive welding processing is a multi-disciplinary, cross-domain, and technological integration. The production process. In particular, in view of the current development goals of “lighter, safer, better performance, and lower cost†for automotive products, people in the industry believe that the current automotive welding technology is rapidly expanding and expanding on the basis of traditional concepts and methods of material connection. And to the advanced "precision welding manufacturing" direction. With the application of new automotive materials and technologies, the requirements for automotive welding technology are also increasing. People in the industry believe that in the future, it is necessary to vigorously develop energy-efficient welding technologies, new materials, new processes, and new equipment, and use robotics, smart devices, computers, and information technology to meet the needs of the automotive industry. At present, laser welding technology has become the mainstream technology that meets the demand for efficient, safe and flexible production of automobiles. Because laser welding technology has good spatial controllability and time control, and can quickly adapt to a variety of materials, shapes and sizes, it can reduce the volume of the body structure itself, reduce body weight, reduce vehicle fuel consumption, can reduce the station It has played a very important role in the loss of production materials and increased production efficiency. Although it has higher input costs in the early stage, it is also widely favored by vehicle manufacturers. “In recent years, laser welding and automated welding and welding lines have become the standard equipment for many independent brands of vehicle companies. The reporter learned from the interview that domestic auto brands such as FAW, Dongfeng, Jianghuai and other domestic brands have realized this. In the past few years, in the technological transformation of enterprises and the construction of new factories, the automatic welding production line has been strengthened,†an industry source told reporters. According to Li Bin, deputy general manager of Huagong Laser and general manager of Wuhan Falilai Welding System Engineering Co., Ltd., there are many difficulties in the welding technology field in China, such as the localization of components such as robots, lasers, and high-end sensors, and the upgrade of manufacturing processes. , the establishment of quality standards system. “Although China has made some breakthroughs in the field of self-separation welding equipment, it will take a long time to improve the overall competitiveness.†Li Bin believes that in spite of the rapid growth of independent welding equipment companies in China in the past two years, both in terms of technological R&D capabilities In terms of robot technology and brand power, there is still a big gap compared with foreign investment. Postscript: If a worker wants to do good, he must first sharpen his tools. The development of the automobile industry and the progress of manufacturing equipment are complementary. The improvement of the level of manufacturing equipment is a strong support for the sustainable development of the automotive industry. The advanced nature of equipment can not only promote the improvement of the quality and production capacity of automobiles, but also determine the competitiveness of the automobile industry to a large extent. In the course of interviews and reports on this series of topics, the reporters felt more and more that the road to self-propelled vehicles in our country has been long and difficult. As a global automotive manufacturing and consumption country, China's auto manufacturing equipment and technology levels are simply not sufficient to support the healthy development of China's auto industry. In the four process equipments for automobile stamping, welding, painting and assembly, foreign brands can be seen everywhere, especially in the field of painting and laser welding. They are also monopolized by foreign capital for a long time, and equipment mainly depends on imports. In the past decade or so, China’s automobile industry has become the main consumer of machine tools, consuming about 40% of the whole society. According to relevant information, more than half of the investment in China's auto industry has been used to purchase machine tools, but most of this money has entered the pockets of foreign auto-equipment manufacturers. For decades, the development of the autonomous equipment manufacturing industry in China still lags far behind the development of the automotive industry. In this regard, we can not help but think deeply, what is the cause of the problems plaguing China's autonomous vehicle manufacturing equipment? From the reporter's point of view, it is our lack of sufficient attention to the importance of developing autonomous manufacturing equipment for a long time. This has led us to still have not established a relatively sound autonomous innovation system for manufacturing technology in this area. We have also invested in human and financial resources in research and development. Fortunately, in the fields of stamping and welding, some companies in China have already begun to make breakthroughs in technology, and some even have the strength to compete with international counterparts on the same stage. Today, as the country vigorously advocates the development of independent manufacturing equipment, it is expected that more excellent domestic automotive high-end manufacturing equipment enterprises will emerge and become a solid support for the development of China's automobile industry. 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China's independent welding equipment industry brewing breakout
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