• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The tube & pipe journal >IMPROVING WELDED JOINT STRUCTURE, PROPERTIES IN OIL AND GAS PIPELINES
【24h】

IMPROVING WELDED JOINT STRUCTURE, PROPERTIES IN OIL AND GAS PIPELINES

机译：改善石油和天然气管道的焊接接头结构，性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

LARGE-DIAMETER pipes-1,420 mm in diameter with 16-mm wall thickness-made from X67 steel (the Russian equivalent is 10G2S steel) are used often in the oil and gas industry and are subjected to difficult service conditions such as alternating loads and low temperatures. Welding such steels with a steady arc leads to overheating the weld metal in the heat-affected zone (HAZ), causing pronounced grain coarsening. Welding with lower heat input and in a narrow heat range reduces this phenomenon. Requirements concerning the mechanical properties, reliability, and fatigue life of welded joints in oil and gas pipelines, as well as structures and tanks in chemical engineering, have become increasingly stringent in recent years. In a number of cases, minimum admissible indices of the mechanical properties are specified for such pipes and structures, primarily concerning the strength, impact toughness, and ductility. Properties of welded joints in structures usually are equivalent to those of the base metal.
机译：直径为1,420毫米，壁厚为16毫米的大直径管道由X67钢（俄罗斯等效为10G2S钢）制成，在石油和天然气行业中经常使用，并且会遇到艰难的服务条件，例如交变载荷和低载荷温度。用稳定的电弧焊接这种钢会导致热影响区（HAZ）中的焊接金属过热，从而引起明显的晶粒粗化。以较低的热量输入和在较窄的热量范围内进行焊接可减少这种现象。近年来，对油气管道以及化学工程中的结构和储罐的焊接接头的机械性能，可靠性和疲劳寿命的要求日益严格。在许多情况下，为此类管道和结构指定了机械性能的最小允许指标，主要涉及强度，冲击韧性和延展性。结构中焊接接头的性能通常与母材的性能相同。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号