Welding Productivity Indicators: A critical analysis.
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 5
Abstract
Welding is one of the main activities of the construction of process plants and one observes the use of several indicators in the monitoring of its productivity. In this article, the behavior of the welding productivity of ASTM A-36 steel are evaluated with the Cored Wire (FCAW) process using the E71T-1C/M electrode and two shielding gases: ArC-25 (75% Argon and 25% CO2) and ArC-40 (60% Argon and 40% CO2). The specimens were welded with procedures that met the requirements of AWS D1.1 [37] and the welding consumables used were approved in the qualification tests of AWS A5.36M / A5.36 (2012). In this evaluation, the following indicators were employed: Melt-off Rate, Deposition Rate, Operating Factor, Deposition Efficiency and Welding Productivity. In view of the productivity being a random process, the Monte Carlo Method was used with the software @RISK 7.5, for evaluation of its behavior. The results obtained evidenced that when the Melt-off Rate, Deposition Rate and Deposition Efficiency indicators are used, the welds produced with the gas ArC-25 present a higher productivity. However, when the Operating Factor and the Welding Productivity is used, the joints welded with gas ArC-40 present better results.
Authors and Affiliations
Miguel Luiz Ribeiro Ferreira, Marcos Müller Lobato, Cássia Andréa Ruotolo Morano
Keywords
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- EP ID EP438504
- DOI 10.9790/1684-1505012232.
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