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    On October 23, 2024, the Science and Technology Department of Henan Province announced the “2024 Henan Provincial Science and Technology Prize Award Suggested Projects”, and the technical achievement of “Key Technology and Intelligent Equipments for Welding of Electrolytic Aluminum Large Sections” declared by Zhengzhou Jingwei Technology as the first unit of completion won the Third Prize of Henan Provincial Technical Invention Award.

    Because physical and chemical properties of steel and aluminum are very different, cracks are easy to occur when welding, resulting in brittle intermetallic compounds, etc., which will reduce the quality of welded joints. Therefore, the welding between steel and aluminum has been a global technical problem, which has plagued the progress and promotion of steel and aluminum dissimilar metal welding for a long time. Zhengzhou Jingwei Technology set up a research group in 2012 to conduct research on large-section metal welding technology, successfully developed direct welding technology, special flux and supporting equipment for steel and aluminum dissimilar metals, which overcome the worldwide problem that steel and aluminum must use explosive block transition connection, and realized the automation and intelligence of steel and aluminum direct welding and welding process. The technical achievements have been evaluated by the expert group headed by academician after listening to the report of the group and visiting the users on the spot, and the project is “the first invention of steel-aluminum direct welding process technology and complete sets of equipment, realizing industrialized application, which is a major technological breakthrough in the global aluminum electrolysis industry” and “the first realization of steel-aluminum direct welding for cathode and anode in aluminum electrolysis cells in the world”，which has significant effects of energy saving and consumption reduction, cost reduction and efficiency increase, and promotes the scientific and technological progress of the aluminum electrolysis industry. The overall technology of the project has reached international leading level.

    This technical achievements have been industrialized and applied in many electrolytic aluminum enterprises such as Chalco, Weiqiao Pioneering, Xinfa Group, Jinjiang Group, JISCO and other groups, with outstanding economic and social benefits, and it also has a clear demonstration and driving role in the national "double carbon" economic development.