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首页> 外文期刊>Welding in the World: Journal of the International Institute of Welding: Journal of the International Institute of Welding >Development of 200 mm-thick HT980 steel plate and its application study to penstock bifurcation
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Development of 200 mm-thick HT980 steel plate and its application study to penstock bifurcation

机译：200mm厚的HT980钢板的研制及其在压力管分叉中的应用研究

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摘要

In order to resolve technical and economical problems in manufacturing penstock bifurcations of hydro-electric power stations, HT980 steel of 200 mm thickness has been developed, which has the same construction performance with HT780 steel. Theproblems when the HT980 steel is used as reinforcement, i.e. the sickle plate of Escher-Wyss type bifurcation, are discussed in this paper. Experiments have been conducted, such as base metal performance test, welded joint property test, fracturetoughness tests including original thickness ESSO test and compact tension (CT) test and so on. It has been confirmed that the properties of the developed HT980 base metal and its welded joints satisfy the target values. Furthermore, it has also beenverified that the developed HT980 steel of 200 mm thickness has almost the same weldability with HT780 steel as that already employed as the sickle plate. The results show that the high strength of HT980 steel, contributes to the decrease in the pipethickness of the penstock and the simplification of the construction procedures. In addition, a case study demonstrates that the reduction of construction cost can be expected by utilizing HT980 steel.
机译：为了解决在制造水力发电厂的压力管道分叉中的技术和经济问题，已经开发了厚度为200mm的HT980钢，其结构性能与HT780钢相同。本文讨论了将HT980钢用作钢筋时的问题，即Escher-Wyss型分叉的镰刀板。进行了诸如母材性能测试，焊接接头性能测试，断裂韧性测试（包括原始厚度ESSO测试和紧密拉伸（CT）测试）等实验。已经证实，开发的HT980母材及其焊接接头的性能满足目标值。此外，还证实了所开发的厚度为200mm的HT980钢与HT780钢具有与已经用作镰刀板的焊接性几乎相同的焊接性。结果表明，HT980钢的高强度有助于降低压力管的管厚，简化施工程序。另外，一个案例研究表明，通过使用HT980钢可以预期降低建筑成本。

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