水下湿法焊接高强度低合金钢的可焊性：焊条疏水涂层的影响

Weldability of Underwater Wet-Welded HSLA Steel: Effects of Electrode Hydrophobic Coatings.

作者信息

Tomków Jacek

机构信息

Division of Welding Engineering, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.

出版信息

Materials (Basel). 2021 Mar 11;14(6):1364. doi: 10.3390/ma14061364.

DOI:10.3390/ma14061364

PMID:33799785

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7998638/

Abstract

The paper presents the effects of waterproof coatings use to cover electrodes on the weldability of high-strength, low-alloy (HSLA) steel in water. With the aim of improving the weldability of S460N HSLA steel in water, modifications of welding filler material were chosen. The surfaces of electrodes were covered by different hydrophobic substances. The aim of the controlled thermal severity (CTS) test was to check the influence of these substances on the HSLA steel weldability in the wet welding conditions. The visual test, metallographic tests, and hardness Vickers HV10 measurements were performed during investigations. The results proved that hydrophobic coatings can reduce the hardness of welded joints in the heat-affected zone by 40-50 HV10. Additionally, the number of cold cracks can be significantly reduced by application of waterproof coatings on the filler material. The obtained results showed that electrode hydrophobic coatings can be used to improve the weldability of HSLA steel in underwater conditions.

摘要

本文介绍了使用防水涂层覆盖电极对高强度低合金钢（HSLA）在水中可焊性的影响。为了提高S460N HSLA钢在水中的可焊性，选择了对焊接填充材料进行改性。电极表面覆盖了不同的疏水物质。控制热烈度（CTS）试验的目的是检查这些物质在湿法焊接条件下对HSLA钢可焊性的影响。在研究过程中进行了外观检测、金相检测和维氏硬度HV10测量。结果证明，疏水涂层可使热影响区焊接接头的硬度降低40 - 50 HV10。此外，在填充材料上应用防水涂层可显著减少冷裂纹的数量。所得结果表明，电极疏水涂层可用于改善HSLA钢在水下条件下的可焊性。