With the development of industry and science and technology , welding technology progress. Each chapter of this manual is only one of the more mature person to be introduced. But times are rapidly running wheels , manual impossible timely amendment added to reflect the forefront of welding technology situation , to fill this deficiency This section describes special welding technology trends.1 . Improve welding productivity is to promote the development Aluminium Welding Electrodes  technology an important driving force(2) Improve preparation workshop mechanization and automation level is currently the world focus on the development direction of the advanced industrial countries3 welding process automation and intelligent is to improve the quality of welding stability , resolve an important direction for harsh working conditions4 continue to promote the development of new industries welding technology advances5 heat welding process research and development is to promote the development of the fundamental driving force6 energy-saving technology is a common concern