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首页> 外文会议>ASME international conference on ocean, offshore and arctic engineering >WET WELDING FIELD TRIALS IN SHALLOW WATERS FOR STRUCTURAL REPAIRS IN FLOATING OIL PRODUCTION UNITS
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WET WELDING FIELD TRIALS IN SHALLOW WATERS FOR STRUCTURAL REPAIRS IN FLOATING OIL PRODUCTION UNITS

机译：浮式采油厂结构修复用浅水湿式焊接现场试验

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摘要

Saving costs is a major attraction of wet welding application in structural repairs of offshore installations. Nevertheless, improve the quality of wet welding to get it as close as possible to plain structural steel quality and also qualify welding procedures in AWS D3.6 class 'A' have been challenges not consistently overcome. This paper describes wet welding trials in shallow waters (5m and 10m) with a rutile and an oxy-rutile type, both commercial electrodes. Two different base metal compositions were employed in the preparation of butt and fillet joints. The main objective is to amend new results of wet weds properties to those already published aiming the application of this welding technique under more reliable conditions and the qualification of welding procedures. The weldments were tested by Vickers hardness, Charpy V notch, tensile, shear strength, bending and fillet weld break tests, chemical and macrographic analysis. Some of these properties and diffusible hydrogen, obtained in laboratory with a mechanized gravity system, will also be presented in order to complement or explain the field testes results obtained. Both electrodes produced class AWS E 70XX weld metals and overall results according class "B" requirements of the AWS D3.6M:2010 code. Some good elongation results obtained encourage future trials to achieve class "A". Barriers to the class "A" qualification of welding procedures in shallow waters are also discussed.
机译：节省成本是湿式焊接应用在海上设施结构维修中的一个主要吸引力。尽管如此，提高湿焊质量以使其尽可能接近普通结构钢的质量，并且要使AWS D3.6 A级焊接程序合格仍是无法始终克服的挑战。本文介绍了在浅水区（5m和10m）使用金红石型和氧金红石型（均为商业焊条）进行的湿式焊接试验。在对接和圆角接缝的制备中使用了两种不同的贱金属成分。主要目的是将湿法焊接性能的新结果修改为已发布的结果，这些结果旨在在更可靠的条件和焊接程序的鉴定条件下应用该焊接技术。通过维氏硬度，夏比V缺口，拉伸，剪切强度，弯曲和倒角焊缝断裂测试，化学和宏观分析对焊件进行测试。为了补充或解释所获得的现场睾丸结果，还将介绍在实验室中通过机械重力系统获得的一些这些特性和可扩散的氢。两种焊条均按照AWS D3.6M：2010规范的“ B”级要求生产AWS E 70XX级焊缝金属，且整体结果。获得的一些良好的伸长率结果鼓励将来进行试验以达到“ A”级。还讨论了浅水焊接程序的“ A”类合格条件的障碍。

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