Per: Anibal Mendes (UFABC), Rocky Bruno Gomes Maschian (pPGCEM-UFABC), Karina Carbone Macieira (PPGCEM-UFABC), Cauã Pontes Brentan (ufabc), Erik Gustavo Del Conte (ufabc)
Abstract:
Using the TOPSIS and Radar methods, three scenarios with different prioritizations of requirements were analyzed for three alloys used in the manufacture of molds for tire vulcanization: aluminum alloys A356 and A319, and carbon steel 1020. In Scenario 1, the priorities were the lowest material cost, greater ease of maintenance (cleaning, weldability, and repair), and greater knowledge of in-service behavior, where carbon steel 1020 was found to be more suitable due to its lower cost and greater experience in working with this material. In Scenario 2, the priority was durability, classifying carbon steel 1020 as the solution closest to the ideal, reflecting the importance of mechanical and corrosion resistance. In Scenario 3, the priorities were energy performance and logistical ease (handling/shipping), where alloy A356 was the most suitable, standing out in density and thermal conductivity. Additionally, an analysis using the radar graphic method evaluated the ease of manufacture, considering casting, machining, and welding, where alloy A319 did not stand out. Alloys A356 and carbon steel 1020 are the most suitable options for the application, with the tie between the two depending on the criteria considered most relevant. The TOPSIS and Radar methods proved adequate for this application.