Analyze and Optimize the Welding Parameters of the Process by Pulsed Tubular Wire (FCAW - Flux Cored Arc Welding) Based on the Geometry of the Weld Beads Resulting from each Test

Abstract

This study aimed to analyze and optimize deposition welding parameters using a pulsed tubular wire process (FCAW - Flux Cored Arc Welding), where the influence variables adopted were the average current, the pulsation frequency, the welding speed and the contact-tip-workpiece distance, with each variable being tested at three different levels. The geometric characteristics evaluated, that is, the response variables, are width, reinforcement, penetration, reinforcement area, penetration area and dilution. The geometric characteristics evaluated, that is, the response variables, are the width, the reinforcement, the penetration, the reinforcement area, the penetration area, the contact-tip-workpiece distance and the dilution. In order to achieve the proposed objective, statistical techniques were used as analysis tools, and, in the first phase, the robust design method (Taguchi) was used to establish which combinations of parameters would be performed in each test, providing us with an L9 matrix. In a second phase, analysis of variance tables (ANOVA) were constructed to select the most significant parameters.

Possibilities of Physical-Chemical Sensors’ Use for Optimizing the Processing of Metallurgical Melting Based on Computer Systems

“…The accuracy of determining the physico-chemical properties of the various metallic materials developed is of particular importance for their quality. Thus, according to [1], "Currently, coatings of materials with high quality and properties of hardness and resistance to wear, as is the case of martensitic steel, have been widely accepted both in the original manufacturing process of components subject to intense demands in relation to these properties, as well as in the process of sudden recovery or scheduled maintenance of these damaged components.…”