Browsing by Subject "Gas metal arc welding (GMAW)"

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    Investigation of the reduction of mouldboard ploughshare wear through hot stamping and hardfacing processes; [Sıcak presleme ve yüzey sertleştirme işlemleri ile kulaklı pulluk uç demirinin aşınmasının azaltılması üzerinde incelemeler]
    (Turkiye Klinikleri, 2011) Yazici A.
    The effects of the hot stamping process and different hardfacing techniques, such as shielded metal arc welding (SMAW) and gas metal arc welding (GMAW), on the abrasive wear of ploughshares were investigated under field operational conditions. The abrasive wear losses were determined by measuring the weight and dimension changes before and after tillage. The wear losses of hot-stamped and hardfaced ploughshares were less significant than those of the conventionally heat-treated ploughshare specimens used under field conditions. Conventional heat treatment and hard facing by the SMAW process decreased the wear weight losses by 46.31% and the dimensional losses by 86.77% in comparison to the performance of the conventionally heat-treated ploughshares. These values were 36.90% and 88.17%, respectively, for conventional heat treatment and hard facing by the GMAW process. There were no statistically significant differences between the SMAW and GMAW hard facing processes in terms of wear losses. Hot stamping and heat treatment applications on the ploughshare also decreased wear losses by 19.03% and dimension losses by 13.82% in comparison to the conventional heat treatment process. According to the results of the overall study, hot stamping and hard facing by SMAW and GMAW processes can be recommended as efficient solutions for decreasing the wear losses of ploughshares. © TÜBİTAK.
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    The effect of welding on reliability of mechanical properties of AISI 1020 and AISI 6150 steel materials
    (CSIC Consejo Superior de Investigaciones Cientificas, 2021) Civi C.; Iren E.
    Welding is one of the most important manufacturing and repair method of today s technology. Though it is known that it can reduced the mechanical properties of materials, it is a necessity in many areas and in some cases, it is preferred because of the efficient and fast manufacturing. The widespread use of welding has raised the problem of reliability of welded structure. It is important to carry on reliability analysis especially on critical welded constructions or some critical materials. In this study, two steel material (AISI 1020 and AISI 6150) which different weldability levels were selected. Gas metal arc welding (GMAW), Gas Tungsten arc welding (GTAW) and shielded metal arc welding (SMAW) were chosen as widespread industrial welding techniques. Welded and non-welded mechanical properties of these materials were examined taking into consideration the reliability, and effect of welding and welding methods were investigated. Reliability analyzes revealed that non-predictable mechanical properties and microstructures are main characteristic of welding process especially in some materials or methods. © 2021 CSIC Consejo Superior de Investigaciones Cientificas. All rights reserved.