The technology roadmap of energy saving and new energy vehicle puts forward higher requirements on the connection technology from the aspects of vehicle body manufacture, such as better quality, high efficiency, flexibility, low cost, safety, energy saving and environmental protection. In view of this new situation, the application and development trend of new aluminum alloy materials, new technology and new equipment in China's automobile industry are briefly analyzed and prospected.
Thanks to sustained economic growth and the improvement of people's living standards, China ranked first in automobile production and sales in the world for nine consecutive years from 2009 to 2017.
With the development of Industry 4.0, China's automobile industry and the world automobile industry have gone through four stages. With the acceleration of mode transformation and structural adjustment, the development of energy-saving new energy vehicles is an important way to solve energy and environmental problems, and it is the only way for China to move from a great power to a great power.
The transformation of automobile products is "lightweight, electrical and intelligent", the transformation of production and manufacturing mode, and the rapid development of "mass customization". The characteristics of new energy, new materials, information technology, digitalization, modularization, automation, flexibility, intelligence and green automobile manufacturing are becoming more and more obvious.
Automobile aluminum alloy welding process: resistance spot welding
Resistance spot welding has been widely used in aluminum alloy door panel, instrument panel, engine hood, rear panel and box cover.
In order to meet the large number of aluminum alloy in the automotive application, the traditional spot welding system can not apply accurate electrode pressure, only the use of weak specification welding, resulting in a series of problems, such as large welding spatter, shorten equipment life and increase energy consumption.
In recent years, servo welding gun driven by servo motor and intermediate frequency inverter DC MFDC resistance spot welding equipment have the characteristics of accurate electrode pressure, stable welding current and fast response speed, and have been gradually popularized and applied. For example, inverter DC resistance welding has the advantages of fast feedback control response speed, good output stability, high thermal efficiency, short welding time, small power loss, obvious energy-saving effect, small equipment volume and so on. The electrode life can be increased by more than one time, the welding effect of aluminum and high thermal conductivity aluminum alloy is remarkable, the quality is more stable and reliable.
Online customer service