Aluminum alloys are light and corrosion-resistant materials, which is why they are widely used in structures in many industrial fields (construction, automotive, electric cables). The article deals with the aluminum busduct structure. Therefore, the mechanical and especially electrical properties of busduct welds are the basic criteria for assessing the quality of welds. The aim of the work was to present the advantages of a process combining metal inert gas welding with immediate microjet cooling (MJC). The parameters of aluminum welding using the micro-jet method were estimated in order to obtain products with the desired strength, mechanical and electrical parameters. Information regarding the influence of various microjet parameters on the metallographic structure was also recorded. Then, the metallographic properties and some physical properties of the welding structures (mechanical resistance, electrical conductivity) were examined. In addition, computer simulations of the welding process with micro-jet cooling were performed. The heat affected zone in the welded material was determined. The proposed numerical method will allow the assessment of the parameters of the welding process with micro-jet cooling depending on the parameters of the materials undergoing the welding process. The numerical approach will significantly reduce costly and time-consuming in situ work. Planning the welding of large structures (such as busducts) will be more economical using the results of computer simulations.

铝合金是轻质且耐腐蚀的材料，这就是为什么它们被广泛用于许多工业领域（建筑、汽车、电缆）的结构中。本文介绍了铝制母线槽结构。因此，母线槽焊缝的机械性能，尤其是电气性能是评估焊缝质量的基本标准。这项工作的目的是展示将金属惰性气体焊接与即时微射流冷却 （MJC） 相结合的工艺的优势。使用微喷射法估计铝焊接的参数，以获得具有所需强度、机械和电气参数的产品。还记录了有关各种微射流参数对金相组织影响的信息。然后，检查了焊接结构的金相性能和一些物理性质（机械阻力、导电性）。此外，还对使用微喷射冷却的焊接过程进行了计算机模拟。确定了焊接材料中的热影响区。所提出的数值方法将允许根据正在进行焊接过程的材料参数，使用微射流冷却评估焊接过程的参数。数值方法将显著减少昂贵且耗时的原位工作。使用计算机模拟的结果规划大型结构（例如母线槽）的焊接将更加经济。