A36钢热输入变化下FCAW与GMAW焊接维氏硬度试验及宏观组织对比分析

H. Pratikno, Nugraha Adhi Pahlawan, W. Dhanista
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引用次数: 2

摘要

在海上建筑施工中,需要对A36钢进行精密焊接,A36钢是海上建筑制造过程中的主要材料之一。本研究对A36钢在不同热输入条件下的焊接GMAW和FCAW结果进行了硬度试验,并对其进行了宏观组织试验,并根据力学试验结果选择了最合适的方法进行了分析。使用的热量输入变化是熔化极气体保护焊- 1.50 kJ /毫米和2.03 kJ /毫米而FCAW 1.90 kJ /毫米和2.30 kJ /毫米。这项研究的结果是最好的硬度测试结果FCAW焊接热输入的方法2.30 kJ / mm HVN 149.06平均极限强度,在宏观的测试结果表明,热量越大,更广泛的热影响区区域,这是焊接热输入FCAW所示2.30 kJ /毫米,热影响区宽度面积20毫米。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparative Analysis of FCAW, and GMAW Welding With Heat Input Variations on A36 Steel Against Vickers Hardness Test and Macrostructure
In offshore building construction, a precise welding method is needed on A36 steel, where A36 steel is one of the main materials in the fabrication process of offshore buildings. In this study a comparison of the results of the welding GMAW and FCAW with variations of the heat input on the A36 steel to the Hardness test, and the macrostructure test and the selection of the most appropriate method based on the results of the mechanical test analysis. The heat input variations used are GMAW 1.50 kJ / mm and 2.03 kJ / mm while for FCAW 1.90 kJ / mm and 2.30 kJ / mm. The results of this study are the best hardness test results are the FCAW welding method with a heat input of 2.30 kJ / mm with an average ultimate strength of 149.06 HVN, in the macro test the results show that the greater the heat input, the wider the HAZ area, this is shown by welding FCAW heat input 2.30 kj / mm which has a HAZ width area of 20 mm.
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