International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The paper presents an informational measurement system for measuring electricity consumption from a three-phase grid during welding of AA6060-T66 aluminium alloy cylindrical workpieces using the TIG (Tungsten Inert Gas) method. In addition to electricity consumption, the developed system can also monitor other related electrical quantities that give an image of the load that the consumer exerts on the grid. The importance of knowing these quantities is reflected in the fact that it can provide us with information about the energy efficiency of the method, as well as the possibility to determine the economic benefits of the chosen process and technology with the knowledge of the welding input parameters. These electricity consumption values affect the sustainability and have an impact on the environment. Energy input also directly affects the quality of the welded joint, which is reflected in penetration, formed microstructure and mechanical properties. Also, knowing this information opens up opportunities to compare performance with other methods. The paper presents the development of such a system, which includes the necessary hardware components, communication and software through which data acquisition is performed.

This paper presents the application of an experimental method for determining the numerical values of the machinability factors of medium alloy carbon steel in the drilling process. Research conditions are defined, including tools, machine, and machining parameters. The experiment was performed according to a two-factor orthogonal experimental plan, and the values of cutting forces were monitored using a dynamometer through other elements of the information measuring system. Cutting forces were also considered in relation to the drilling depth.

This paper presents a method of economic analysis of welding tubes made of aluminum alloy AA6060 using MIG and TIG arc processes, as well as the non-conventional FSW process in relation to the length of the welded joint. The cost model includes fixed and variable costs, which are broken down into individual components, and their specifics for each of the selected processes are considered. The input values were defined and a calculation was made for obtaining a specific workpiece, that is, for welding a tube with an outer diameter of ∅150 mm, and a wall thickness of 5 mm, with a butt joint in real production conditions. The obtained results were analyzed and the price of welding was determined according to the production time and per meter of the welded joint.