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首页> 外文会议>Proceedings of the ASME India oil and gas pipeline conference 2015 >ESTABLISHMENT OF COLD WIRE ADDITION TECHNOLOGY~® IN MULTIWIRE SUBMERGED ARC WELDING FOR LINE PIPE MANUFACTURING TO IMPROVE THE WELDMENT QUALITY
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ESTABLISHMENT OF COLD WIRE ADDITION TECHNOLOGY~® IN MULTIWIRE SUBMERGED ARC WELDING FOR LINE PIPE MANUFACTURING TO IMPROVE THE WELDMENT QUALITY

机译：在管线生产的多层埋弧焊中建立冷线附加技术〜®，以提高焊接质量

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摘要

For achieving high productivity multiple wire submerged arc welding such as tandem wire, three wires and five wires submerged arc welding was introduced in recent past years. Due to adding of additional wires in a pipe mill faced process difficulties such as controlling the current supply to each wire and further challenges for consumable design in order to give effective slag characteristics and bead shape control at these higher welding speeds and heat inputs. To gain maximum productivity, welding speed must be as fast as possible (in excess of 2 m/min) consistent with reliable high speed wire feeding and the characteristics of the SAW flux considering these factors in determining the balance of heat input, penetration, bead shape, dilution, weld metal chemistry and mechanical properties such as toughness. Steels containing high strength low alloying elements like Manganese, Molybdenum, Titanium and boron have favorable physical properties such as higher subzero toughness, resistance to improve the mechanical properties because of which there is substantial saving in the material. High strength low alloy steels materials are utilized in offshore and onshore at critical services. However, such benefits can be exploited provided these steels can be welded with appropriate development of welding process such as cold wire addition® in multi wires with process controller using WINCC programmer, Z5 version to give better weldments, which will not compromise the integrity, and operating condition. To obtain higher productivity and quality, it is necessary to develop a welding procedure for butt joint of line pipe steels. This paper describes the recent work carried out by Welspun, in this regard to establish the welding procedure using GMAW and submerged arc welding process and evaluation of mechanical properties. Macro and micro structural analysis were also made to characterize the weld metal properties.
机译：为了实现高生产率，近年来引入了多股埋弧焊，例如串联焊丝，三焊丝和五焊丝埋弧焊。由于在管轧机中增加了额外的焊丝，因此面临着工艺上的困难，例如控制对每根焊丝的电流供应，以及在这些较高的焊接速度和热量输入下，要提供有效的熔渣特性和焊道形状控制，易耗性设计面临的进一步挑战。为了获得最高的生产率，焊接速度必须尽可能快（超过2 m / min），并与可靠的高速送丝和SAW助焊剂的特性相一致，并考虑这些因素来确定热量输入，渗透，焊缝的平衡形状，稀释度，焊缝金属化学成分和韧性等机械性能。含有高强度低合金元素（如锰，钼，钛和硼）的钢具有良好的物理性能，例如较高的零下韧性，耐机械性能提高的特性，因此可节省大量材料。高强度低合金钢材料用于海上和陆上的关键服务。但是，只要可以通过适当开发焊接工艺来焊接这些钢，例如使用WINCC编程器使用Z5版本的工艺控制器在多焊丝中使用ColdWireadding®在多焊丝中进行焊接，就可以提供更好的焊接效果，而不会损害完整性。操作条件。为了获得更高的生产率和质量，有必要开发一种管线管钢对接焊工艺。本文介绍了Welspun最近所做的工作，在这方面，他们建立了使用GMAW和埋弧焊工艺的焊接程序，并评估了机械性能。还进行了宏观和微观结构分析以表征焊缝金属性能。

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